1. WeatherSpark.com
  2. Indonesia
  3. West Kalimantan
  4. Ketapang

Summer Weather in Ketapang Indonesia

Daily high temperatures are around 86°F, rarely falling below 83°F or exceeding 89°F. The lowest daily average high temperature is 86°F on January 5.

Daily low temperatures are around 77°F, rarely falling below 75°F or exceeding 79°F. The highest daily average low temperature is 77°F on January 16.

For reference, on May 17, the hottest day of the year, temperatures in Ketapang typically range from 77°F to 89°F, while on August 8, the coldest day of the year, they range from 76°F to 88°F.

Average High and Low Temperature in the Summer in Ketapang

Average High and Low Temperature in the Summer in KetapangDecJanFeb75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°FSpringFallJan 386°FJan 386°F77°F77°FDec 186°FDec 186°F77°F77°FFeb 2887°FFeb 2887°F77°F77°FFeb 186°FFeb 186°F77°F77°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.

The figure below shows you a compact characterization of the hourly average summer 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 Summer in Ketapang

Average Hourly Temperature in the Summer in KetapangDecJanFeb12 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 AMSpringFallNowNowwarmhothot
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.

Barranquilla, Colombia (11,739 miles away); Vigia, Pará, Brazil (10,926 miles); and Fortaleza, Ceará, Brazil (10,241 miles) are the far-away foreign places with temperatures most similar to Ketapang (view comparison).

Map
Marker
© OpenStreetMap contributors

Compare Ketapang to another city:

Map

The summer in Ketapang experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 88% to 83%. The highest chance of overcast or mostly cloudy conditions is 89% on December 12.

The clearest day of the summer is February 28, with clear, mostly clear, or partly cloudy conditions 17% of the time.

For reference, on December 11, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 89%, while on June 25, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 37%.

Cloud Cover Categories in the Summer in Ketapang

Cloud Cover Categories in the Summer in KetapangDecJanFeb0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SpringFallJun 2537%Jun 2537%Dec 112%Dec 112%Feb 2817%Feb 2817%Jan 112%Jan 112%Feb 112%Feb 112%NowNowpartly cloudymostly cloudyovercastmostly clear
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 Ketapang, the chance of a wet day over the course of the summer is very rapidly decreasing, starting the season at 74% and ending it at 47%.

For reference, the year's highest daily chance of a wet day is 76% on November 22, and its lowest chance is 24% on August 10.

Probability of Precipitation in the Summer in Ketapang

Probability of Precipitation in the Summer in KetapangDecJanFeb0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%SpringFallFeb 2445%Feb 2445%Dec 174%Dec 174%Jan 160%Jan 160%Feb 148%Feb 148%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).

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 summer in Ketapang is very rapidly decreasing, starting the season at 12.8 inches, when it rarely exceeds 18.2 inches or falls below 8.0 inches, and ending the season at 6.8 inches, when it rarely exceeds 11.6 inches or falls below 2.1 inches.

The lowest average 31-day accumulation is 6.8 inches on February 26.

Average Monthly Rainfall in the Summer in Ketapang

Average Monthly Rainfall in the Summer in KetapangDecJanFeb0 in0 in5 in5 in10 in10 in15 in15 in20 in20 inSpringFallFeb 256.8 inFeb 256.8 inDec 112.8 inDec 112.8 inJan 110.0 inJan 110.0 inFeb 17.7 inFeb 17.7 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.

Over the course of the summer in Ketapang, the length of the day is essentially constant. The shortest day of the summer is February 28, with 12 hours, 9 minutes of daylight and the longest day is December 21, with 12 hours, 14 minutes of daylight.

Hours of Daylight and Twilight in the Summer in Ketapang

Hours of Daylight and Twilight in the Summer in KetapangDecJanFeb0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSpringFallDec 2112 hr, 14 minDec 2112 hr, 14 mindaydaydaydaynightFeb 2812 hr, 9 minFeb 2812 hr, 9 minFeb 112 hr, 12 minFeb 112 hr, 12 minNowNow
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 earliest sunrise of the summer in Ketapang is 5:22 AM on December 1 and the latest sunrise is 27 minutes later at 5:49 AM on February 15.

The earliest sunset is 5:35 PM on December 1 and the latest sunset is 24 minutes later at 5:59 PM on February 7.

Daylight saving time is not observed in Ketapang during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:31 AM and sets 12 hours, 14 minutes later, at 5:45 PM, while on June 20, the shortest day of the year, it rises at 5:41 AM and sets 12 hours, 1 minute later, at 5:42 PM.

Sunrise & Sunset with Twilight in the Summer in Ketapang

Sunrise & Sunset with Twilight in the Summer in KetapangDecJanFeb12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMSpringFall5:22 AM5:22 AMDec 15:35 PMDec 15:35 PM5:48 AM5:48 AMFeb 75:59 PMFeb 75:59 PM5:48 AM5:48 AMFeb 285:56 PMFeb 285:56 PM5:36 AM5:36 AMJan 15:50 PMJan 15:50 PMSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day in the summer. 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 Summer in Ketapang

Solar Elevation and Azimuth in the Summer in KetapangDecJanFeb12 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 AMSpringFall0010202030304050506060708000101020303040405060607070NowNow
northeastsouthwest
Solar elevation and azimuth in the the summer 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 summer 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 Summer in Ketapang

Moon Rise, Set & Phases in the Summer in KetapangDecJanFeb12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSpringFallNov 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 AMJan 145:28 AMJan 145:28 AMJan 297:37 PMJan 297:37 PMFeb 128:54 PMFeb 128:54 PMFeb 287:45 AMFeb 287:45 AMMar 141:55 PMMar 141:55 PMMar 295:58 PMMar 295:58 PM4:52 AM4:52 AM4:56 PM4:56 PM5:19 AM5:19 AM5:05 AM5:05 AM5:38 PM5:38 PM5:42 PM5:42 PM6:05 AM6:05 AM5:41 AM5:41 AM5:28 PM5:28 PM5:49 AM5:49 AM5:22 AM5:22 AM5:56 PM5:56 PM5:54 PM5:54 PM6:13 AM6:13 AM5:49 AM5:49 AM6:17 PM6:17 PM5:56 PM5:56 PM6:16 AM6:16 AMNowNow
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 Ketapang is essentially constant during the summer, remaining around 100% throughout.

For reference, on January 1, the muggiest day of the year, there are muggy conditions 100% of the time, while on August 3, the least muggy day of the year, there are muggy conditions 100% of the time.

Humidity Comfort Levels in the Summer in Ketapang

Humidity Comfort Levels in the Summer in KetapangDecJanFeb0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SpringFallJan 15100%Jan 15100%Dec 1100%Dec 1100%Feb 28100%Feb 28100%Jan 1100%Jan 1100%Feb 1100%Feb 1100%NowNowmiserablemiserableoppressiveoppressive
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 Ketapang is essentially constant during the summer, remaining within 0.4 miles per hour of 5.2 miles per hour throughout.

For reference, on August 10, the windiest day of the year, the daily average wind speed is 6.1 miles per hour, while on April 25, the calmest day of the year, the daily average wind speed is 3.7 miles per hour.

The highest daily average wind speed during the summer is 5.6 miles per hour on January 4.

Average Wind Speed in the Summer in Ketapang

Average Wind Speed in the Summer in KetapangDecJanFeb0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mphSpringFallJan 45.6 mphJan 45.6 mphDec 15.0 mphDec 15.0 mphFeb 284.8 mphFeb 284.8 mphFeb 15.4 mphFeb 15.4 mphNowNow
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 Ketapang throughout the summer is predominantly from the west, with a peak proportion of 74% on December 17.

Wind Direction in the Summer in Ketapang

Wind Direction in the Summer in KetapangDecJanFeb0%100%20%80%40%60%60%40%80%20%100%0%SpringFallNowNowwestnorthsoutheast
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).

Ketapang 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 Ketapang is essentially constant during the summer, remaining within 1°F of 84°F throughout.

The lowest average surface water temperature during the summer is 83°F on January 28.

Average Water Temperature in the Summer in Ketapang

Average Water Temperature in the Summer in KetapangDecJanFeb82°F82°F83°F83°F84°F84°F85°F85°F86°F86°F87°F87°FSpringFallJan 2883°FJan 2883°FDec 185°FDec 185°FFeb 2884°FFeb 2884°FJan 184°FJan 184°FNowNow
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 Ketapang 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 Summer in Ketapang

Time Spent in Various Temperature Bands and the Growing Season in the Summer in KetapangDecJanFeb0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SpringFall100%Jan 15100%Jan 15NowNowwarmhot
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 Ketapang are very rapidly increasing during the summer, increasing by 2,743°F, from 4,687°F to 7,430°F, over the course of the season.

Growing Degree Days in the Summer in Ketapang

Growing Degree Days in the Summer in KetapangDecJanFeb5,000°F5,000°F5,500°F5,500°F6,000°F6,000°F6,500°F6,500°F7,000°F7,000°F7,500°F7,500°FSpringFallDec 14,687°FDec 14,687°FFeb 287,430°FFeb 287,430°FJan 15,638°FJan 15,638°FNowNow
The average growing degree days accumulated over the course of the summer, 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 Ketapang is gradually increasing during the summer, rising by 0.6 kWh, from 4.1 kWh to 4.7 kWh, over the course of the season.

Average Daily Incident Shortwave Solar Energy in the Summer in Ketapang

Average Daily Incident Shortwave Solar Energy in the Summer in KetapangDecJanFeb0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWhSpringFallDec 14.1 kWhDec 14.1 kWhFeb 284.7 kWhFeb 284.7 kWhJan 14.2 kWhJan 14.2 kWhFeb 14.5 kWhFeb 14.5 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.

For the purposes of this report, the geographical coordinates of Ketapang are -1.839 deg latitude, 109.977 deg longitude, and 13 ft elevation.

The topography within 2 miles of Ketapang is essentially flat, with a maximum elevation change of 62 feet and an average elevation above sea level of 17 feet. Within 10 miles is essentially flat (121 feet). Within 50 miles contains only modest variations in elevation (3,757 feet).

The area within 2 miles of Ketapang is covered by cropland (43%), trees (26%), grassland (13%), and shrubs (12%), within 10 miles by water (60%) and trees (23%), and within 50 miles by water (63%) and trees (24%).

This report illustrates the typical weather in Ketapang, 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, Ketapang / Rahadi Usmaman, in our network suitable to be used as a proxy for the historical temperature and dew point records of Ketapang.

At a distance of 3 kilometers from Ketapang, 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 Ketapang 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.