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Climate and Average Weather Year Round in Okaya Japan

In Okaya, the summers are warm, humid, wet, and mostly cloudy and the winters are freezing, snowy, and mostly clear. Over the course of the year, the temperature typically varies from 19°F to 82°F and is rarely below 12°F or above 88°F.

Based on the tourism score, the best time of year to visit Okaya for warm-weather activities is from mid July to early September.

Climate in Okaya

very coldcoldcoolcomfortablewarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow72%72%27%27%overcastclearprecipitation: 6.3 inprecipitation: 6.3 in1.2 in1.2 inmuggy: 50%muggy: 50%0%0%drydrytourism score: 6.4tourism score: 6.40.00.0
Okaya weather by month. Click on each chart for more information.

The warm season lasts for 3.0 months, from June 16 to September 18, with an average daily high temperature above 72°F. The hottest month of the year in Okaya is August, with an average high of 80°F and low of 65°F.

The cold season lasts for 3.2 months, from December 4 to March 12, with an average daily high temperature below 44°F. The coldest month of the year in Okaya is January, with an average low of 20°F and high of 35°F.

Average High and Low Temperature in Okaya

Average High and Low Temperature in OkayawarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 2635°FJan 2635°FAug 682°FAug 682°F19°F19°F66°F66°FJun 1672°FJun 1672°FSep 1872°FSep 1872°FDec 444°FDec 444°FMar 1244°FMar 1244°F58°F58°F57°F57°F29°F29°F27°F27°FNowNow
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 35°F37°F46°F58°F67°F72°F78°F80°F73°F62°F51°F41°F
Temp. 27°F28°F36°F48°F57°F64°F71°F73°F65°F53°F42°F32°F
Low 20°F21°F29°F39°F49°F57°F64°F65°F57°F46°F35°F26°F

The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in Okaya

Average Hourly Temperature in OkayaJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowfreezingfreezingvery coldvery coldcoldcoldcoolcoolcomfortablewarmfreezingfreezing
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Middleton, Massachusetts, United States (6,709 miles away) is the far-away foreign place with temperatures most similar to Okaya (view comparison).

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Compare Okaya to another city:

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In Okaya, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Okaya begins around October 5 and lasts for 6.5 months, ending around April 19.

The clearest month of the year in Okaya is December, during which on average the sky is clear, mostly clear, or partly cloudy 71% of the time.

The cloudier part of the year begins around April 19 and lasts for 5.5 months, ending around October 5.

The cloudiest month of the year in Okaya is June, during which on average the sky is overcast or mostly cloudy 68% of the time.

Cloud Cover Categories in Okaya

Cloud Cover Categories in OkayaclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Dec 1672%Dec 1672%Jul 127%Jul 127%Oct 550%Oct 550%Apr 1950%Apr 1950%NowNowclearmostly clearpartly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 34%40%45%50%56%68%67%56%54%45%36%29%
Clearer 66%60%55%50%44%32%33%44%46%55%64%71%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Okaya varies significantly throughout the year.

The wetter season lasts 4.0 months, from June 2 to October 1, with a greater than 33% chance of a given day being a wet day. The month with the most wet days in Okaya is July, with an average of 15.1 days with at least 0.04 inches of precipitation.

The drier season lasts 8.0 months, from October 1 to June 2. The month with the fewest wet days in Okaya is December, with an average of 4.1 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Okaya changes throughout the year.

Rain alone is the most common for 11 months, from January 24 to January 2. The month with the most days of rain alone in Okaya is July, with an average of 15.1 days.

Mixed snow and rain is the most common for 3.1 weeks, from January 2 to January 24. The month with the most days of mixed snow and rain in Okaya is February, with an average of 1.8 days.

Daily Chance of Precipitation in Okaya

Daily Chance of Precipitation in OkayarainJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 354%Jul 354%Dec 2811%Dec 2811%Jan 212%Jan 212%Jun 233%Jun 233%Oct 133%Oct 133%NowNowrainmixedsnow
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 1.4d2.8d6.5d8.5d9.2d13.1d15.1d13.1d11.6d8.1d5.7d2.7d
Mixed 1.5d1.8d1.6d0.2d0.0d0.0d0.0d0.0d0.0d0.0d0.2d0.9d
Snow 1.3d0.9d0.3d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.1d0.6d
Any 4.3d5.5d8.4d8.7d9.2d13.1d15.1d13.1d11.6d8.1d6.0d4.1d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Okaya experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Okaya. The month with the most rain in Okaya is September, with an average rainfall of 6.2 inches.

The month with the least rain in Okaya is January, with an average rainfall of 0.7 inches.

Average Monthly Rainfall in Okaya

Average Monthly Rainfall in OkayaJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inJul 26.3 inJul 26.3 inJan 130.7 inJan 130.7 inSep 116.3 inSep 116.3 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 0.7″1.2″2.4″3.1″3.5″5.2″5.7″5.0″6.2″3.9″2.1″1.1″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Okaya experiences significant seasonal variation in monthly snowfall.

The snowy period of the year lasts for 4.1 months, from December 4 to April 8, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Okaya is January, with an average snowfall of 6.1 inches.

The snowless period of the year lasts for 7.9 months, from April 8 to December 4. The least snow falls around July 27, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Okaya

The average snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average rainfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 6.1″5.5″3.1″0.6″0.0″0.0″0.0″0.0″0.0″0.0″0.4″2.0″

The length of the day in Okaya varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 42 minutes of daylight; the longest day is June 21, with 14 hours, 37 minutes of daylight.

Hours of Daylight and Twilight in Okaya

Hours of Daylight and Twilight in OkayaJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 8 minMar 2012 hr, 8 minMar 2014 hr, 37 minJun 2114 hr, 37 minJun 2112 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 42 minDec 219 hr, 42 minDec 21nightnightdayNowNow
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 10.0h10.9h12.0h13.1h14.1h14.6h14.3h13.5h12.4h11.3h10.3h9.8h

The earliest sunrise is at 4:30 AM on June 13, and the latest sunrise is 2 hours, 29 minutes later at 6:59 AM on January 7. The earliest sunset is at 4:33 PM on December 5, and the latest sunset is 2 hours, 36 minutes later at 7:08 PM on June 28.

Daylight saving time (DST) is not observed in Okaya during 2024.

Sunrise & Sunset with Twilight in Okaya

Sunrise & Sunset with Twilight in OkayaJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 134:30 AMJun 134:30 AM7:08 PMJun 287:08 PMJun 28Dec 54:33 PMDec 54:33 PM6:59 AMJan 76:59 AMJan 7daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day over the course of the year 2024. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in Okaya

Solar Elevation and Azimuth in OkayaJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AM000010101010202020203030303040404050505060607000001010101020202020303030304040405050607077NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases.

Moon Rise, Set & Phases in Okaya

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Okaya experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.6 months, from June 26 to September 12, during which time the comfort level is muggy, oppressive, or miserable at least 13% of the time. The month with the most muggy days in Okaya is August, with 13.5 days that are muggy or worse.

The least muggy day of the year is February 23, when muggy conditions are essentially unheard of.

Humidity Comfort Levels in Okaya

Humidity Comfort Levels in OkayamuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 230%Feb 230%Aug 750%Aug 750%Jun 2613%Jun 2613%Sep 1213%Sep 1213%NowNowmuggymuggyhumidhumiddrydrycomfortablecomfortableoppressiveoppressive
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d1.7d10.7d13.5d3.4d0.1d0.0d0.0d

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Okaya experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.0 months, from November 11 to May 12, with average wind speeds of more than 6.6 miles per hour. The windiest month of the year in Okaya is February, with an average hourly wind speed of 8.4 miles per hour.

The calmer time of year lasts for 6.0 months, from May 12 to November 11. The calmest month of the year in Okaya is August, with an average hourly wind speed of 4.8 miles per hour.

Average Wind Speed in Okaya

Average Wind Speed in OkayawindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphFeb 78.5 mphFeb 78.5 mphAug 34.7 mphAug 34.7 mphNov 116.6 mphNov 116.6 mphMay 126.6 mphMay 126.6 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 8.38.48.17.56.35.35.34.85.15.76.88.0

The predominant average hourly wind direction in Okaya varies throughout the year.

The wind is most often from the south for 3.9 weeks, from September 2 to September 29, with a peak percentage of 33% on September 4. The wind is most often from the west for 11 months, from September 29 to September 2, with a peak percentage of 69% on January 1.

Wind Direction in Okaya

Wind Direction in OkayaWSWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Okaya is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.5 months, from July 16 to October 1, with an average temperature above 74°F. The month of the year in Okaya with the warmest water is August, with an average temperature of 80°F.

The time of year with cooler water lasts for 3.9 months, from January 7 to May 3, with an average temperature below 56°F. The month of the year in Okaya with the coolest water is March, with an average temperature of 50°F.

Average Water Temperature in Okaya

Average Water Temperature in OkayawarmcoolJanFebMarAprMayJunJulAugSepOctNovDec45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°F80°F80°F85°F85°FAug 1880°FAug 1880°F50°FMar 1550°FMar 15Jul 1674°FJul 1674°FOct 174°FOct 174°FJan 756°FJan 756°FMay 356°FMay 356°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 55°F51°F50°F52°F59°F67°F74°F80°F77°F71°F65°F59°F

To characterize how pleasant the weather is in Okaya throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Okaya for general outdoor tourist activities is from mid July to early September, with a peak score in the second week of August.

Tourism Score in Okaya

Tourism Score in Okayabest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.46.40.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Okaya for hot-weather activities is from late July to mid August, with a peak score in the first week of August.

Beach/Pool Score in Okaya

Beach/Pool Score in OkayaJanFebMarAprMayJunJulAugSepOctNovDec002244668810104.14.10.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Okaya typically lasts for 6.6 months (201 days), from around April 18 to around November 5, rarely starting before March 31 or after May 5, and rarely ending before October 19 or after November 22.

Time Spent in Various Temperature Bands and the Growing Season in Okaya

Time Spent in Various Temperature Bands and the Growing Season in Okayagrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 1850%Apr 1850%Nov 550%Nov 590%May 590%May 590%Oct 1990%Oct 1910%Mar 3110%Mar 3110%Nov 2210%Nov 220%Feb 40%Feb 4Jul 28100%Jul 28100%freezingvery coldcoldcoolcomfortablewarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Okaya should appear around April 27, only rarely appearing before April 20 or after May 6.

Growing Degree Days in Okaya

Growing Degree Days in OkayaJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°FApr 2790°FApr 2790°FJul 6900°FJul 6900°FAug 171,800°FAug 171,800°FDec 312,756°FDec 312,756°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences significant seasonal variation over the course of the year.

The brighter period of the year lasts for 4.3 months, from April 9 to August 19, with an average daily incident shortwave energy per square meter above 5.7 kWh. The brightest month of the year in Okaya is May, with an average of 6.4 kWh.

The darker period of the year lasts for 3.0 months, from November 5 to February 5, with an average daily incident shortwave energy per square meter below 3.3 kWh. The darkest month of the year in Okaya is December, with an average of 2.6 kWh.

Average Daily Incident Shortwave Solar Energy in Okaya

Average Daily Incident Shortwave Solar Energy in OkayabrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhMay 226.5 kWhMay 226.5 kWhDec 252.6 kWhDec 252.6 kWhApr 95.7 kWhApr 95.7 kWhAug 195.7 kWhAug 195.7 kWhNov 53.3 kWhNov 53.3 kWhFeb 53.3 kWhFeb 53.3 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 2.83.74.95.96.46.16.05.84.83.93.12.6

For the purposes of this report, the geographical coordinates of Okaya are 36.057 deg latitude, 138.045 deg longitude, and 2,536 ft elevation.

The topography within 2 miles of Okaya contains very significant variations in elevation, with a maximum elevation change of 1,165 feet and an average elevation above sea level of 2,793 feet. Within 10 miles contains very significant variations in elevation (4,311 feet). Within 50 miles also contains extreme variations in elevation (9,980 feet).

The area within 2 miles of Okaya is covered by trees (46%), cropland (20%), and water (20%), within 10 miles by trees (75%) and cropland (18%), and within 50 miles by trees (81%) and cropland (14%).

This report illustrates the typical weather in Okaya, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Okaya.

For each station, the records are corrected for the elevation difference between that station and Okaya according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Okaya is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Okaya and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Okaya and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.