Summer Weather in Fort Portal Uganda

Daily high temperatures are around 77°F, rarely falling below 72°F or exceeding 82°F. The highest daily average high temperature is 78°F on July 22.

Daily low temperatures are around 59°F, rarely falling below 56°F or exceeding 61°F. The lowest daily average low temperature is 58°F on July 7.

For reference, on February 17, the hottest day of the year, temperatures in Fort Portal typically range from 61°F to 81°F, while on July 6, the coldest day of the year, they range from 58°F to 77°F.

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.

Córdoba, Colombia (7,322 miles away) is the far-away foreign place with temperatures most similar to Fort Portal (view comparison).

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The summer in Fort Portal experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 73% to 55%. The lowest chance of overcast or mostly cloudy conditions is 53% on August 14.

The clearest day of the summer is August 14, with clear, mostly clear, or partly cloudy conditions 47% of the time.

For reference, on April 18, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 84%, while on August 14, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 47%.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Fort Portal, the chance of a wet day over the course of the summer is very rapidly increasing, starting the season at 41% and ending it at 57%.

For reference, the year's highest daily chance of a wet day is 81% on November 4, and its lowest chance is 24% on January 21.

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 Fort Portal is rapidly increasing, starting the season at 2.6 inches, when it rarely exceeds 5.3 inches or falls below 0.9 inches, and ending the season at 3.9 inches, when it rarely exceeds 6.3 inches or falls below 1.6 inches.

The lowest average 31-day accumulation is 1.7 inches on July 3.

Over the course of the summer in Fort Portal, the length of the day is essentially constant. The shortest day of the summer is August 31, with 12 hours, 7 minutes of daylight and the longest day is June 21, with 12 hours, 10 minutes of daylight.

The earliest sunrise of the summer in Fort Portal is 6:52 AM on June 1 and the latest sunrise is 9 minutes later at 7:01 AM on July 28.

The earliest sunset is 7:01 PM on June 1 and the latest sunset is 8 minutes later at 7:09 PM on July 23.

Daylight saving time is not observed in Fort Portal during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 6:55 AM and sets 12 hours, 10 minutes later, at 7:05 PM, while on December 21, the shortest day of the year, it rises at 6:54 AM and sets 12 hours, 5 minutes later, at 6:59 PM.

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.

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.

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 Fort Portal is gradually decreasing during the summer, falling from 3% to 1% over the course of the season.

The lowest chance of a muggy day during the summer is 0% on July 20.

For reference, on April 24, the muggiest day of the year, there are muggy conditions 13% of the time, while on July 19, the least muggy day of the year, there are muggy conditions 0% of the time.

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 Fort Portal is essentially constant during the summer, remaining within 0.3 miles per hour of 4.2 miles per hour throughout.

For reference, on February 2, the windiest day of the year, the daily average wind speed is 4.6 miles per hour, while on October 10, the calmest day of the year, the daily average wind speed is 3.5 miles per hour.

The highest daily average wind speed during the summer is 4.5 miles per hour on July 4.

The wind direction in Fort Portal during the summer is predominantly out of the south from June 1 to August 13 and the east from August 13 to August 31.

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 Fort Portal 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.

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 Fort Portal are very rapidly increasing during the summer, increasing by 1,553°F, from 2,831°F to 4,385°F, over the course of the season.

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 Fort Portal is essentially constant during the summer, remaining within 0.2 kWh of 5.4 kWh throughout.

The highest average daily incident shortwave solar energy during the summer is 5.6 kWh on August 27.

For the purposes of this report, the geographical coordinates of Fort Portal are 0.662 deg latitude, 30.275 deg longitude, and 4,980 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%).