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Spring Weather in Kopen Indonesia

Daily high temperatures are around 88°F, rarely falling below 84°F or exceeding 94°F. The highest daily average high temperature is 90°F on November 1.

Daily low temperatures are around 72°F, rarely falling below 67°F or exceeding 76°F.

For reference, on October 29, the hottest day of the year, temperatures in Kopen typically range from 73°F to 90°F, while on August 10, the coldest day of the year, they range from 70°F to 85°F.

Average High and Low Temperature in the Spring in Kopen

Average High and Low Temperature in the Spring in KopenSepOctNov65°F65°F70°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°FWinterSummerOct 2990°FOct 2990°F73°F73°FSep 186°FSep 186°F70°F70°FNov 3088°FNov 3088°F74°F74°FOct 189°FOct 189°F71°F71°F
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.

The figure below shows you a compact characterization of the hourly average spring temperatures. The horizontal axis is the day, 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 the Spring in Kopen

Average Hourly Temperature in the Spring in KopenSepOctNov12 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 AMWinterSummercomfortablecomfortablewarmwarmhot
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.

Guatire, Venezuela (12,293 miles away) is the far-away foreign place with temperatures most similar to Kopen (view comparison).

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The spring in Kopen experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 57% to 86%.

The clearest day of the spring is September 2, with clear, mostly clear, or partly cloudy conditions 43% of the time.

For reference, on January 23, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 90%, while on July 31, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 48%.

Cloud Cover Categories in the Spring in Kopen

Cloud Cover Categories in the Spring in KopenSepOctNov0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%WinterSummerSep 143%Sep 143%Nov 3014%Nov 3014%Oct 135%Oct 135%Nov 124%Nov 124%clearmostly clearpartly cloudymostly 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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Kopen, the chance of a wet day over the course of the spring is very rapidly increasing, starting the season at 8% and ending it at 49%.

For reference, the year's highest daily chance of a wet day is 66% on January 20, and its lowest chance is 7% on August 19.

Probability of Precipitation in the Spring in Kopen

Probability of Precipitation in the Spring in KopenSepOctNov0%0%10%10%20%20%30%30%40%40%50%50%60%60%WinterSummerSep 18%Sep 18%Nov 3049%Nov 3049%Oct 113%Oct 113%Nov 123%Nov 123%rain
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).

Rainfall

To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during the spring in Kopen is very rapidly increasing, starting the season at 0.9 inches, when it rarely exceeds 2.5 inches, and ending the season at 5.9 inches, when it rarely exceeds 9.6 inches or falls below 2.5 inches.

Average Monthly Rainfall in the Spring in Kopen

Average Monthly Rainfall in the Spring in KopenSepOctNov0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inWinterSummerSep 10.9 inSep 10.9 inNov 305.9 inNov 305.9 inOct 11.4 inOct 11.4 inNov 12.5 inNov 12.5 in
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.

Over the course of the spring in Kopen, the length of the day is increasing. From the start to the end of the season, the length of the day increases by 37 minutes, implying an average daily increase of 25 seconds, and weekly increase of 2 minutes, 53 seconds.

The shortest day of the spring is September 1, with 11 hours, 57 minutes of daylight and the longest day is November 30, with 12 hours, 34 minutes of daylight.

Hours of Daylight and Twilight in the Spring in Kopen

Hours of Daylight and Twilight in the Spring in KopenSepOctNov0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrWinterSummerSep 2212 hr, 6 minSep 2212 hr, 6 mindaydaydaydaynightNov 3012 hr, 34 minNov 3012 hr, 34 minNov 112 hr, 24 minNov 112 hr, 24 min
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.

The latest sunrise of the spring in Kopen is 5:24 AM on September 1 and the earliest sunrise is 32 minutes earlier at 4:53 AM on November 15.

The earliest sunset is 5:17 PM on October 13 and the latest sunset is 12 minutes later at 5:29 PM on November 30.

Daylight saving time is not observed in Kopen during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:03 AM and sets 12 hours, 37 minutes later, at 5:39 PM, while on June 20, the shortest day of the year, it rises at 5:35 AM and sets 11 hours, 38 minutes later, at 5:14 PM.

Sunrise & Sunset with Twilight in the Spring in Kopen

Sunrise & Sunset with Twilight in the Spring in KopenSepOctNov12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMWinterSummer4:53 AM4:53 AMNov 155:22 PMNov 155:22 PM5:01 AM5:01 AMOct 135:17 PMOct 135:17 PM5:24 AM5:24 AMSep 15:21 PMSep 15:21 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day in the spring. 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 the Spring in Kopen

Solar Elevation and Azimuth in the Spring in KopenSepOctNov12 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 AMWinterSummer00102020303040505060607000101020303040405060607080
northeastsouthwest
Solar elevation and azimuth in the the spring of 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 the spring of 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in the Spring in Kopen

Moon Rise, Set & Phases in the Spring in KopenSepOctNov12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMWinterSummerAug 46:14 PMAug 46:14 PMAug 201:26 AMAug 201:26 AMSep 38:56 AMSep 38:56 AMSep 189:35 AMSep 189:35 AMOct 31:50 AMOct 31:50 AMOct 176:27 PMOct 176:27 PMNov 17:48 PMNov 17:48 PMNov 164:29 AMNov 164:29 AMDec 11:22 PMDec 11:22 PMDec 154:02 PMDec 154:02 PMDec 315:28 AMDec 315:28 AM5:23 AM5:23 AM5:02 PM5:02 PM5:49 AM5:49 AM5:26 AM5:26 AM5:35 PM5:35 PM4:39 PM4:39 PM5:12 AM5:12 AM5:14 AM5:14 AM5:41 PM5:41 PM5:09 PM5:09 PM5:21 AM5:21 AM4:28 AM4:28 AM5:08 PM5:08 PM4:48 PM4:48 PM4:50 AM4:50 AM4:35 AM4:35 AM5:35 PM5:35 PM5:39 PM5:39 PM5:33 AM5:33 AM5:09 AM5:09 AM
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.

The chance that a given day will be muggy in Kopen is increasing during the spring, rising from 94% to 100% over the course of the season.

For reference, on January 1, the muggiest day of the year, there are muggy conditions 100% of the time, while on August 28, the least muggy day of the year, there are muggy conditions 94% of the time.

Humidity Comfort Levels in the Spring in Kopen

Humidity Comfort Levels in the Spring in KopenSepOctNov0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%WinterSummerSep 194%Sep 194%Nov 30100%Nov 30100%Oct 197%Oct 197%Nov 199%Nov 199%miserablemiserableoppressiveoppressivemuggymuggyhumidhumid
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.

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 Kopen is rapidly decreasing during the spring, decreasing from 7.1 miles per hour to 4.8 miles per hour over the course of the season.

For reference, on August 9, the windiest day of the year, the daily average wind speed is 7.3 miles per hour, while on March 24, the calmest day of the year, the daily average wind speed is 4.1 miles per hour.

Average Wind Speed in the Spring in Kopen

Average Wind Speed in the Spring in KopenSepOctNov0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mphWinterSummerSep 17.1 mphSep 17.1 mphNov 304.8 mphNov 304.8 mphOct 16.9 mphOct 16.9 mphNov 15.8 mphNov 15.8 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Kopen throughout the spring is predominantly from the south, with a peak proportion of 79% on October 4.

Wind Direction in the Spring in Kopen

Wind Direction in the Spring in KopenSWSepOctNov0%100%20%80%40%60%60%40%80%20%100%0%WinterSummerwestsoutheastnorth
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).

Kopen 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 surface water temperature in Kopen is increasing during the spring, rising by 4°F, from 79°F to 84°F, over the course of the season.

Average Water Temperature in the Spring in Kopen

Average Water Temperature in the Spring in KopenSepOctNov77°F77°F78°F78°F79°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°FWinterSummerSep 179°FSep 179°FNov 3084°FNov 3084°FOct 180°FOct 180°FNov 183°FNov 183°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 Kopen 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 the Spring in Kopen

Time Spent in Various Temperature Bands and the Growing Season in the Spring in KopenSepOctNov0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%WinterSummer100%Oct 16100%Oct 16comfortablewarmhot
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.

The average accumulated growing degree days in Kopen are very rapidly increasing during the spring, increasing by 2,612°F, from 1,654°F to 4,266°F, over the course of the season.

Growing Degree Days in the Spring in Kopen

Growing Degree Days in the Spring in KopenSepOctNov2,000°F2,000°F2,500°F2,500°F3,000°F3,000°F3,500°F3,500°F4,000°F4,000°FWinterSummerSep 11,654°FSep 11,654°FNov 304,266°FNov 304,266°FOct 12,489°FOct 12,489°FNov 13,402°FNov 13,402°F
The average growing degree days accumulated over the course of the spring, 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 in Kopen is rapidly decreasing during the spring, falling by 1.6 kWh, from 6.7 kWh to 5.1 kWh, over the course of the season.

The highest average daily incident shortwave solar energy during the spring is 6.9 kWh on September 27.

Average Daily Incident Shortwave Solar Energy in the Spring in Kopen

Average Daily Incident Shortwave Solar Energy in the Spring in KopenSepOctNov0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhWinterSummerSep 276.9 kWhSep 276.9 kWhSep 16.7 kWhSep 16.7 kWhNov 305.1 kWhNov 305.1 kWhNov 16.4 kWhNov 16.4 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Kopen are -8.309 deg latitude, 114.174 deg longitude, and 804 ft elevation.

The topography within 2 miles of Kopen contains only modest variations in elevation, with a maximum elevation change of 476 feet and an average elevation above sea level of 800 feet. Within 10 miles contains only modest variations in elevation (3,566 feet). Within 50 miles also contains extreme variations in elevation (10,735 feet).

The area within 2 miles of Kopen is covered by trees (44%), shrubs (29%), and cropland (21%), within 10 miles by trees (43%) and cropland (30%), and within 50 miles by water (50%) and trees (26%).

This report illustrates the typical weather in Kopen, 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 Kopen.

For each station, the records are corrected for the elevation difference between that station and Kopen 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 Kopen is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Kopen 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 Kopen 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.

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