Average Weather in Mempawah Indonesia
The climate in Mempawah is hot, oppressive, and overcast. Over the course of the year, the temperature typically varies from 76°F to 90°F and is rarely below 75°F or above 93°F.
Average High and Low Temperature
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 Mempawah, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.
The clearer part of the year in Mempawah begins around May 15 and lasts for 3.7 months, ending around September 7. On June 29, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 28% of the time, and overcast or mostly cloudy 72% of the time.
The cloudier part of the year begins around September 7 and lasts for 8.3 months, ending around May 15. On December 1, the cloudiest day of the year, the sky is overcast or mostly cloudy 89% of the time, and clear, mostly clear, or partly cloudy 11% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Mempawah varies significantly throughout the year.
The wetter season lasts 7.1 months, from September 30 to May 2, with a greater than 55% chance of a given day being a wet day. The chance of a wet day peaks at 74% on November 15.
The drier season lasts 4.9 months, from May 2 to September 30. The smallest chance of a wet day is 36% on June 26.
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 74% on November 15.
Daily Chance of Precipitation
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. Mempawah experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in Mempawah. The most rain falls during the 31 days centered around December 26, with an average total accumulation of 12.2 inches.
The least rain falls around August 12, with an average total accumulation of 5.4 inches.
Average Monthly Rainfall
The length of the day in Mempawah does not vary substantially over the course of the year, staying within 8 minutes of 12 hours throughout. In 2017, the shortest day is December 21, with 12 hours, 6 minutes of daylight; the longest day is June 21, with 12 hours, 9 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:24 AM on November 2, and the latest sunrise is 31 minutes later at 5:55 AM on February 11. The earliest sunset is at 5:30 PM on November 3, and the latest sunset is 31 minutes later at 6:01 PM on February 11.
Daylight saving time (DST) is not observed in Mempawah during 2017.
Sunrise & Sunset with 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 perceived humidity level in Mempawah, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 100% throughout.
Humidity Comfort Levels
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 Mempawah experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 3.4 months, from November 25 to March 7, with average wind speeds of more than 3.0 miles per hour. The windiest day of the year is January 27, with an average hourly wind speed of 3.9 miles per hour.
The calmer time of year lasts for 8.6 months, from March 7 to November 25. The calmest day of the year is April 21, with an average hourly wind speed of 2.1 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Mempawah varies throughout the year.
The wind is most often from the west for 1.1 months, from March 26 to April 29 and for 1.9 months, from October 15 to December 13, with a peak percentage of 56% on November 11. The wind is most often from the south for 5.5 months, from April 29 to October 15, with a peak percentage of 83% on August 12. The wind is most often from the north for 3.4 months, from December 13 to March 26, with a peak percentage of 65% on January 1.
Mempawah 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 2.9 months, from April 18 to July 16, with an average temperature above 85°F. The day of the year with the warmest water is May 19, with an average temperature of 86°F.
The time of year with cooler water lasts for 1.8 months, from January 8 to March 2, with an average temperature below 83°F. The day of the year with the coolest water is February 2, with an average temperature of 82°F.
Average Water Temperature
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 per square meter does not vary significantly over the course of the year, remaining within 0.4 kilowatt-hours of 4.4 kilowatt-hours throughout.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Mempawah are 0.371 deg latitude, 108.970 deg longitude, and 16 ft elevation.
The topography within 2 miles of Mempawah is essentially flat, with a maximum elevation change of 72 feet and an average elevation above sea level of 20 feet. Within 10 miles is essentially flat (456 feet). Within 50 miles contains only modest variations in elevation (4,715 feet).
The area within 2 miles of Mempawah is covered by trees (46%) and cropland (45%), within 10 miles by water (51%) and trees (32%), and within 50 miles by water (59%) and trees (23%).
This report illustrates the typical weather in Mempawah, 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, Supadio Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Mempawah.
At a distance of 76 kilometers from Mempawah, 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 Mempawah 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.
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.