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Average Weather in Jatiroto Indonesia

In Jatiroto, the wet season is overcast, the dry season is partly cloudy, and it is hot and oppressive year round. Over the course of the year, the temperature typically varies from 71°F to 93°F and is rarely below 68°F or above 97°F.

Average High and Low Temperature

Average High and Low Temperature in JatirotoJanFebMarAprMayJunJulAugSepOctNovDec0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°FAug 1087°FAug 1087°FOct 2993°FOct 2993°F71°F71°F76°F76°FJun 1688°FJun 1688°F76°F76°F74°F74°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 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

Average Hourly Temperature in JatirotoJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcomfortablehotwarm
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Clouds

In Jatiroto, 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 Jatiroto begins around May 1 and lasts for 5.6 months, ending around October 21. On August 2, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 46% of the time, and overcast or mostly cloudy 54% of the time.

The cloudier part of the year begins around October 21 and lasts for 6.4 months, ending around May 1. On February 3, the cloudiest day of the year, the sky is overcast or mostly cloudy 91% of the time, and clear, mostly clear, or partly cloudy 9% of the time.

Cloud Cover Categories

Cloud Cover Categories in JatirotoclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 246%Aug 246%Feb 39%Feb 39%May 127%May 127%Oct 2127%Oct 2127%mostly clearpartly cloudyclearovercastmostly cloudy
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

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

The wetter season lasts 5.2 months, from November 18 to April 24, with a greater than 36% chance of a given day being a wet day. The chance of a wet day peaks at 65% on February 1.

The drier season lasts 6.8 months, from April 24 to November 18. The smallest chance of a wet day is 5% on August 20.

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 throughout the year is rain alone, with a peak probability of 65% on February 1.

Daily Chance of Precipitation

Daily Chance of Precipitation in JatirotowetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Feb 165%Feb 165%Aug 205%Aug 205%Jan 160%Jan 160%Nov 1836%Nov 1836%Apr 2436%Apr 2436%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 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. Jatiroto experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Jatiroto. The most rain falls during the 31 days centered around January 29, with an average total accumulation of 10.5 inches.

The least rain falls around August 22, with an average total accumulation of 0.6 inches.

Average Monthly Rainfall

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 liquid-equivalent snowfall.

Sun

The length of the day in Jatiroto does not vary substantially over the course of the year, staying within 36 minutes of 12 hours throughout. In 2017, the shortest day is June 21, with 11 hours, 39 minutes of daylight; the longest day is December 21, with 12 hours, 36 minutes of daylight.

Hours of Daylight and Twilight

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 is at 4:56 AM on November 15, and the latest sunrise is 45 minutes later at 5:41 AM on July 15. The earliest sunset is at 5:14 PM on May 26, and the latest sunset is 39 minutes later at 5:53 PM on January 29.

Daylight saving time (DST) is not observed in Jatiroto during 2017.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in JatirotoJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PMNov 154:56 AMNov 154:56 AM5:53 PMJan 295:53 PMJan 29May 265:14 PMMay 265:14 PM5:41 AMJul 155:41 AMJul 15daynightnight
The solar day over the course of the year 2017. 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.

Humidity

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.

Jatiroto experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 9.9 months, from October 7 to August 5, during which time the comfort level is muggy, oppressive, or miserable at least 92% of the time. The muggiest day of the year is February 24, with muggy conditions 100% of the time.

The least muggy day of the year is August 29, with muggy conditions 89% of the time.

Humidity Comfort Levels

Humidity Comfort Levels in JatirotomuggymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Aug 2989%Aug 2989%100%Feb 24100%Feb 24Oct 792%Oct 792%oppressiveoppressivehumidhumidmuggymuggymiserablemiserable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

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 Jatiroto experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.1 months, from June 1 to November 4, with average wind speeds of more than 3.8 miles per hour. The windiest day of the year is August 25, with an average hourly wind speed of 5.0 miles per hour.

The calmer time of year lasts for 6.9 months, from November 4 to June 1. The calmest day of the year is March 25, with an average hourly wind speed of 2.6 miles per hour.

Average Wind Speed

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

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

The wind is most often from the south for 6.0 days, from March 15 to March 21 and for 5.9 months, from June 30 to December 26, with a peak percentage of 80% on October 5. The wind is most often from the east for 3.3 months, from March 21 to June 30, with a peak percentage of 66% on May 10. The wind is most often from the west for 2.6 months, from December 26 to March 15, with a peak percentage of 47% on January 1.

Wind Direction

Wind Direction in JatirotoWESJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%southeastwestnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Jatiroto 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 some seasonal variation over the course of the year.

The time of year with warmer water lasts for 6.4 months, from November 14 to May 26, with an average temperature above 83°F. The day of the year with the warmest water is April 3, with an average temperature of 84°F.

The time of year with cooler water lasts for 2.4 months, from July 18 to September 30, with an average temperature below 80°F. The day of the year with the coolest water is August 25, with an average temperature of 79°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 2.4 months, from August 17 to October 29, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest day of the year is September 28, with an average of 7.0 kWh.

The darker period of the year lasts for 4.3 months, from December 4 to April 12, with an average daily incident shortwave energy per square meter below 4.9 kWh. The darkest day of the year is February 13, with an average of 4.4 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in JatirotobrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWhSep 287.0 kWhSep 287.0 kWhFeb 134.4 kWhFeb 134.4 kWhAug 176.4 kWhAug 176.4 kWhDec 44.9 kWhDec 44.9 kWhApr 124.9 kWhApr 124.9 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.

Topography

For the purposes of this report, the geographical coordinates of Jatiroto are -8.122 deg latitude, 113.364 deg longitude, and 115 ft elevation.

The topography within 2 miles of Jatiroto contains only modest variations in elevation, with a maximum elevation change of 200 feet and an average elevation above sea level of 126 feet. Within 10 miles contains only modest variations in elevation (5,259 feet). Within 50 miles also contains extreme variations in elevation (12,064 feet).

The area within 2 miles of Jatiroto is covered by cropland (38%), trees (31%), shrubs (19%), and grassland (13%), within 10 miles by trees (45%) and cropland (33%), and within 50 miles by water (44%) and trees (28%).

Data Sources

This report illustrates the typical weather in Jatiroto, 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 Jatiroto.

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

The stations contributing to this reconstruction are: Juanda International Airport (51%, 104 kilometers, northwest) and Surabaya (49%, 108 kilometers, north).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , 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 aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.