Average Weather in Fort Portal Uganda

1. World
2. Uganda
3. Western Region
4. Kabarole District
5. Fort Portal

The climate in Fort Portal is warm and overcast. Over the course of the year, the temperature typically varies from 58°F to 81°F and is rarely below 56°F or above 87°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.

In Fort Portal, 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 Fort Portal begins around June 15 and lasts for 3.3 months, ending around September 23. On August 15, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 47% of the time, and overcast or mostly cloudy 53% of the time.

The cloudier part of the year begins around September 23 and lasts for 8.7 months, ending around June 15. On April 19, the cloudiest day of the year, the sky is overcast or mostly cloudy 84% of the time, and clear, mostly clear, or partly cloudy 16% of the time.

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

The wetter season lasts 8.8 months, from March 15 to December 10, with a greater than 52% chance of a given day being a wet day. The chance of a wet day peaks at 81% on November 5.

The drier season lasts 3.2 months, from December 10 to March 15. The smallest chance of a wet day is 24% on January 21.

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 81% on November 5.

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. Fort Portal experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Fort Portal. The most rain falls during the 31 days centered around November 2, with an average total accumulation of 5.8 inches.

The least rain falls around January 29, with an average total accumulation of 1.5 inches.

The length of the day in Fort Portal does not vary substantially over the course of the year, staying within 9 minutes of 12 hours throughout. In 2017, the shortest day is December 21, with 12 hours, 5 minutes of daylight; the longest day is June 21, with 12 hours, 10 minutes of daylight.

The earliest sunrise is at 6:39 AM on November 2, and the latest sunrise is 31 minutes later at 7:10 AM on February 10. The earliest sunset is at 6:45 PM on November 3, and the latest sunset is 31 minutes later at 7:15 PM on February 12.

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

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.

Fort Portal experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.5 months, from October 17 to June 1, during which time the comfort level is muggy, oppressive, or miserable at least 3% of the time. The muggiest day of the year is April 25, with muggy conditions 13% of the time.

The least muggy day of the year is July 21, when muggy conditions are essentially unheard of.

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 predominant average hourly wind direction in Fort Portal varies throughout the year.

The wind is most often from the west for 2.1 months, from January 15 to March 19 and for 3.9 weeks, from September 15 to October 12, with a peak percentage of 38% on October 8. The wind is most often from the east for 2.4 weeks, from March 19 to April 5; for 1.1 months, from August 13 to September 15; and for 2.4 months, from October 12 to December 23, with a peak percentage of 45% on November 20. The wind is most often from the south for 4.3 months, from April 5 to August 13, with a peak percentage of 50% on May 18.

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 1.8 months, from January 18 to March 11, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest day of the year is February 11, with an average of 6.2 kWh.

The darker period of the year lasts for 1.4 months, from October 7 to November 19, with an average daily incident shortwave energy per square meter below 5.1 kWh. The darkest day of the year is October 25, with an average of 4.8 kWh.

For the purposes of this report, the geographical coordinates of Fort Portal are 0.662 deg latitude, 30.275 deg longitude, and 5,036 ft elevation.

The topography within 2 miles of Fort Portal contains only modest variations in elevation, with a maximum elevation change of 364 feet and an average elevation above sea level of 5,012 feet. Within 10 miles contains only modest variations in elevation (6,211 feet). Within 50 miles also contains extreme variations in elevation (14,636 feet).

The area within 2 miles of Fort Portal is covered by cropland (86%), within 10 miles by cropland (72%) and trees (13%), and within 50 miles by trees (44%) and cropland (29%).

This report illustrates the typical weather in Fort Portal, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Fort Portal is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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.

The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Fort Portal, according to the International Standard Atmosphere .

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.

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.