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Climate and Average Weather Year Round in Jamanis Indonesia

The climate in Jamanis is warm, oppressive, and overcast. Over the course of the year, the temperature typically varies from 67°F to 85°F and is rarely below 63°F or above 88°F.

Based on the tourism score, the best time of year to visit Jamanis for warm-weather activities is from early June to late September.

Climate in Jamanis

warmhotwarmJanFebMarAprMayJunJulAugSepOctNovDecNowNow38%38%10%10%overcastprecipitation: 10.7 inprecipitation: 10.7 in1.6 in1.6 inmuggy: 100%muggy: 100%90%90%tourism score: 6.5tourism score: 6.54.04.0
Jamanis weather by month. Click on each chart for more information.

The temperature in Jamanis varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

Average High and Low Temperature in Jamanis

Average High and Low Temperature in JamanisJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FAug 1082°FAug 1082°FMar 185°FMar 185°F67°F67°F69°F69°FNov 3084°FNov 3084°FApr 2084°FApr 2084°FJun 1882°FJun 1882°F69°F69°F69°F69°F68°F68°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 85°F85°F85°F84°F84°F82°F81°F82°F83°F84°F84°F85°F
Temp. 75°F75°F76°F76°F76°F74°F73°F73°F74°F75°F76°F76°F
Low 69°F68°F69°F69°F69°F68°F67°F67°F68°F69°F69°F69°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 Jamanis

Average Hourly Temperature in JamanisJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowcomfortablecomfortablewarm
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.

Sucre, Ecuador (11,616 miles away); Gigante, Colombia (12,030 miles); and Lékoni, Gabon (6,481 miles) are the far-away foreign places with temperatures most similar to Jamanis (view comparison).

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In Jamanis, 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 Jamanis begins around May 23 and lasts for 4.5 months, ending around October 9.

The clearest month of the year in Jamanis is August, during which on average the sky is clear, mostly clear, or partly cloudy 36% of the time.

The cloudier part of the year begins around October 9 and lasts for 7.5 months, ending around May 23.

The cloudiest month of the year in Jamanis is January, during which on average the sky is overcast or mostly cloudy 90% of the time.

Cloud Cover Categories in Jamanis

Cloud Cover Categories in JamanisclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 438%Aug 438%Feb 310%Feb 310%May 2324%May 2324%Oct 924%Oct 924%NowNowmostly clearpartly cloudymostly cloudyovercastclear
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 90%89%86%84%77%68%65%64%69%79%87%88%
Clearer 10%11%14%16%23%32%35%36%31%21%13%12%

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

The wetter season lasts 7.0 months, from October 16 to May 14, with a greater than 44% chance of a given day being a wet day. The month with the most wet days in Jamanis is January, with an average of 22.4 days with at least 0.04 inches of precipitation.

The drier season lasts 5.0 months, from May 14 to October 16. The month with the fewest wet days in Jamanis is August, with an average of 5.2 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. The month with the most days of rain alone in Jamanis is January, with an average of 22.4 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 74% on January 26.

Daily Chance of Precipitation in Jamanis

Daily Chance of Precipitation in JamaniswetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 2674%Jan 2674%Aug 915%Aug 915%Oct 1644%Oct 1644%May 1444%May 1444%NowNowrain
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 22.4d20.8d21.2d18.3d13.5d8.7d6.6d5.2d7.8d13.9d20.6d22.4d

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. Jamanis experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Jamanis. The month with the most rain in Jamanis is December, with an average rainfall of 10.6 inches.

The month with the least rain in Jamanis is August, with an average rainfall of 1.6 inches.

Average Monthly Rainfall in Jamanis

Average Monthly Rainfall in JamanisJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 inDec 1010.7 inDec 1010.7 inAug 111.6 inAug 111.6 inJan 2810.4 inJan 2810.4 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 10.3″10.1″9.7″8.0″5.1″3.2″2.1″1.6″2.8″5.7″9.8″10.6″

The length of the day in Jamanis does not vary substantially over the course of the year, staying within 32 minutes of 12 hours throughout. In 2024, the shortest day is June 21, with 11 hours, 42 minutes of daylight; the longest day is December 21, with 12 hours, 33 minutes of daylight.

Hours of Daylight and Twilight in Jamanis

Hours of Daylight and Twilight in JamanisJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 6 minSep 2212 hr, 6 minSep 2212 hr, 33 minDec 2112 hr, 33 minDec 2112 hr, 7 minMar 2012 hr, 7 minMar 2011 hr, 42 minJun 2111 hr, 42 minJun 21daydaynightNowNow
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 12.5h12.3h12.1h11.9h11.8h11.7h11.7h11.9h12.1h12.3h12.4h12.5h

The earliest sunrise is at 5:18 AM on November 14, and the latest sunrise is 42 minutes later at 6:01 AM on July 16. The earliest sunset is at 5:36 PM on May 25, and the latest sunset is 37 minutes later at 6:13 PM on January 31.

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

Sunrise & Sunset with Twilight in Jamanis

Sunrise & Sunset with Twilight in JamanisJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMNov 145:18 AMNov 145:18 AM6:13 PMJan 316:13 PMJan 31May 255:36 PMMay 255:36 PM6:01 AMJul 166:01 AMJul 16daynightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Jamanis

Solar Elevation and Azimuth in JamanisJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0000101010102020202030303030404040405050505060606060707070800000101010102020202030303030404040405050505060606070708059NowNow
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 Jamanis

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.

Jamanis experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 11 months, from August 31 to July 30, during which time the comfort level is muggy, oppressive, or miserable at least 92% of the time. The month with the most muggy days in Jamanis is March, with 30.9 days that are muggy or worse.

The month with the fewest muggy days in Jamanis is August, with 28.1 days that are muggy or worse.

Humidity Comfort Levels in Jamanis

Humidity Comfort Levels in JamanismuggymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Aug 1190%Aug 1190%100%Apr 18100%Apr 18NowNowoppressiveoppressivemuggymuggyhumidhumidmiserablemiserable
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 30.9d28.9d30.9d30.0d30.8d29.2d29.1d28.1d28.8d30.7d29.9d30.9d

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 Jamanis experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.6 months, from June 14 to November 1, with average wind speeds of more than 5.6 miles per hour. The windiest month of the year in Jamanis is September, with an average hourly wind speed of 7.1 miles per hour.

The calmer time of year lasts for 7.4 months, from November 1 to June 14. The calmest month of the year in Jamanis is March, with an average hourly wind speed of 4.1 miles per hour.

Average Wind Speed in Jamanis

Average Wind Speed in JamaniswindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mphAug 247.2 mphAug 247.2 mphMar 234.0 mphMar 234.0 mphJun 145.6 mphJun 145.6 mphNov 15.6 mphNov 15.6 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) 4.84.84.14.35.15.76.57.17.16.35.14.6

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

The wind is most often from the east for 4.0 months, from March 18 to July 18, with a peak percentage of 62% on May 17. The wind is most often from the south for 5.0 months, from July 18 to December 18, with a peak percentage of 67% on September 26. The wind is most often from the west for 3.0 months, from December 18 to March 18, with a peak percentage of 51% on January 1.

Wind Direction in Jamanis

Wind Direction in JamanisWESWJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
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).

Jamanis 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 does not vary significantly over the course of the year, remaining within 2°F of 83°F throughout.

Average Water Temperature in Jamanis

Average Water Temperature in JamanisJanFebMarAprMayJunJulAugSepOctNovDec79°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°F87°F87°FApr 1685°FApr 1685°F81°FAug 2581°FAug 25Jun 784°FJun 784°FJul 2582°FJul 2582°FOct 382°FOct 382°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 84°F83°F84°F85°F85°F84°F82°F81°F82°F83°F84°F84°F

To characterize how pleasant the weather is in Jamanis 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 Jamanis for general outdoor tourist activities is from early June to late September, with a peak score in the first week of August.

Tourism Score in Jamanis

Tourism Score in Jamanisbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.56.54.04.0NowNowtemperaturetemperature 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 Jamanis for hot-weather activities is from late April to mid October, with a peak score in the second week of June.

Beach/Pool Score in Jamanis

Beach/Pool Score in Jamanisbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.15.13.53.54.94.93.73.7NowNowtemperaturetemperature 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).

Temperatures in Jamanis are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

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

Time Spent in Various Temperature Bands and the Growing Season in JamanisJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 2100%Jul 2NowNowcomfortablewarmhotcool
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.

Growing Degree Days in Jamanis

Growing Degree Days in JamanisJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F1,000°F1,000°F2,000°F2,000°F3,000°F3,000°F4,000°F4,000°F5,000°F5,000°F6,000°F6,000°F7,000°F7,000°F8,000°F8,000°F9,000°F9,000°FJul 590°FJul 590°FAug 9900°FAug 9900°FSep 161,800°FSep 161,800°FJun 309,072°FJun 309,072°FNowNow
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 some seasonal variation over the course of the year.

The brighter period of the year lasts for 1.9 months, from August 16 to October 13, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest month of the year in Jamanis is September, with an average of 6.4 kWh.

The darker period of the year lasts for 6.8 months, from November 23 to June 17, with an average daily incident shortwave energy per square meter below 4.9 kWh. The darkest month of the year in Jamanis is April, with an average of 4.5 kWh.

Average Daily Incident Shortwave Solar Energy in Jamanis

Average Daily Incident Shortwave Solar Energy in JamanisbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhSep 156.5 kWhSep 156.5 kWhApr 94.5 kWhApr 94.5 kWhNov 234.9 kWhNov 234.9 kWhJun 174.9 kWhJun 174.9 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) 4.64.64.74.54.84.95.46.16.45.95.14.7

For the purposes of this report, the geographical coordinates of Jamanis are -7.189 deg latitude, 108.184 deg longitude, and 1,575 ft elevation.

The topography within 2 miles of Jamanis contains very significant variations in elevation, with a maximum elevation change of 1,050 feet and an average elevation above sea level of 1,649 feet. Within 10 miles contains very significant variations in elevation (6,266 feet). Within 50 miles also contains extreme variations in elevation (10,030 feet).

The area within 2 miles of Jamanis is covered by cropland (32%), trees (30%), shrubs (27%), and grassland (11%), within 10 miles by trees (63%) and cropland (18%), and within 50 miles by trees (46%) and cropland (27%).

This report illustrates the typical weather in Jamanis, 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 is only a single weather station, Tunggul Wulung Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Jamanis.

At a distance of 110 kilometers from Jamanis, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.

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

Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.

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.