Climate and Average Weather Year Round in Yumbe Uganda

In Yumbe, the summers are short, sweltering, and overcast and the winters are long, comfortable, muggy, wet, and mostly cloudy. Over the course of the year, the temperature typically varies from 65°F to 97°F and is rarely below 62°F or above 102°F.

Based on the beach/pool score, the best times of year to visit Yumbe for hot-weather activities are from mid August to late September and from mid November to late February.

The hot season lasts for 2.2 months, from January 20 to March 28, with an average daily high temperature above 93°F. The hottest month of the year in Yumbe is March, with an average high of 95°F and low of 71°F.

The cool season lasts for 6.0 months, from May 12 to November 14, with an average daily high temperature below 84°F. The coldest month of the year in Yumbe is July, with an average low of 65°F and high of 81°F.

In Yumbe, 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 Yumbe begins around June 25 and lasts for 3.3 months, ending around October 2.

The clearest month of the year in Yumbe is August, during which on average the sky is clear, mostly clear, or partly cloudy 44% of the time.

The cloudier part of the year begins around October 2 and lasts for 8.7 months, ending around June 25.

The cloudiest month of the year in Yumbe is April, during which on average the sky is overcast or mostly cloudy 82% 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 Yumbe varies very significantly throughout the year.

The wetter season lasts 7.8 months, from March 25 to November 20, with a greater than 36% chance of a given day being a wet day. The month with the most wet days in Yumbe is August, with an average of 20.1 days with at least 0.04 inches of precipitation.

The drier season lasts 4.2 months, from November 20 to March 25. The month with the fewest wet days in Yumbe is January, with an average of 1.8 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The month with the most days of rain alone in Yumbe is August, with an average of 20.1 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 67% on August 3.

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. Yumbe experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Yumbe. The month with the most rain in Yumbe is August, with an average rainfall of 5.8 inches.

The month with the least rain in Yumbe is January, with an average rainfall of 0.4 inches.

The length of the day in Yumbe does not vary substantially over the course of the year, staying within 19 minutes of 12 hours throughout. In 2024, the shortest day is December 21, with 11 hours, 55 minutes of daylight; the longest day is June 20, with 12 hours, 19 minutes of daylight.

The earliest sunrise is at 6:38 AM on October 27, and the latest sunrise is 31 minutes later at 7:09 AM on February 6. The earliest sunset is at 6:38 PM on November 8, and the latest sunset is 32 minutes later at 7:10 PM on July 20.

Daylight saving time (DST) is not observed in Yumbe during 2024.

The figure below presents a compact representation of key lunar data for 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.

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.

Yumbe experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 8.8 months, from March 19 to December 12, during which time the comfort level is muggy, oppressive, or miserable at least 21% of the time. The month with the most muggy days in Yumbe is May, with 23.5 days that are muggy or worse.

The month with the fewest muggy days in Yumbe is January, with 1.0 days that are muggy or worse.

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 Yumbe experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 4.1 months, from December 4 to April 9, with average wind speeds of more than 6.1 miles per hour. The windiest month of the year in Yumbe is February, with an average hourly wind speed of 7.9 miles per hour.

The calmer time of year lasts for 7.9 months, from April 9 to December 4. The calmest month of the year in Yumbe is July, with an average hourly wind speed of 4.4 miles per hour.

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

The wind is most often from the east for 1.7 months, from February 26 to April 16 and for 1.2 months, from October 30 to December 4, with a peak percentage of 43% on November 27. The wind is most often from the west for 4.0 months, from June 13 to October 13, with a peak percentage of 46% on September 16. The wind is most often from the north for 2.4 weeks, from October 13 to October 30 and for 2.8 months, from December 4 to February 26, with a peak percentage of 34% on October 29.

To characterize how pleasant the weather is in Yumbe throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Yumbe for general outdoor tourist activities is from late June to late September, with a peak score in the last week of August.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best times of year to visit Yumbe for hot-weather activities are from mid August to late September and from mid November to late February, with a peak score in the last week of December.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

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 Yumbe 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.

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 2.1 months, from January 17 to March 19, with an average daily incident shortwave energy per square meter above 6.2 kWh. The brightest month of the year in Yumbe is February, with an average of 6.4 kWh.

The darker period of the year lasts for 3.1 months, from May 1 to August 5, with an average daily incident shortwave energy per square meter below 5.3 kWh. The darkest month of the year in Yumbe is June, with an average of 5.0 kWh.

For the purposes of this report, the geographical coordinates of Yumbe are 3.465 deg latitude, 31.247 deg longitude, and 3,222 ft elevation.

The topography within 2 miles of Yumbe contains only modest variations in elevation, with a maximum elevation change of 253 feet and an average elevation above sea level of 3,180 feet. Within 10 miles contains only modest variations in elevation (1,339 feet). Within 50 miles contains very significant variations in elevation (3,560 feet).

The area within 2 miles of Yumbe is covered by cropland (100%), within 10 miles by cropland (55%) and trees (39%), and within 50 miles by shrubs (34%) and cropland (33%).