Average Weather in Butaleja Uganda

1. World
2. Uganda
3. Eastern Region
4. Butaleja District
5. Butaleja

The climate in Butaleja is warm and overcast. Over the course of the year, the temperature typically varies from 62°F to 91°F and is rarely below 60°F or above 97°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 Butaleja, 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 Butaleja begins around June 7 and lasts for 4.0 months, ending around October 8. On September 1, 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 8 and lasts for 8.0 months, ending around June 7. On April 17, 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 Butaleja varies very significantly throughout the year.

The wetter season lasts 8.0 months, from March 22 to November 22, with a greater than 46% chance of a given day being a wet day. The chance of a wet day peaks at 75% on May 6.

The drier season lasts 4.0 months, from November 22 to March 22. The smallest chance of a wet day is 17% on January 23.

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 75% on May 6.

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. Butaleja experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Butaleja. The most rain falls during the 31 days centered around April 26, with an average total accumulation of 7.4 inches.

The least rain falls around February 2, with an average total accumulation of 1.3 inches.

The length of the day in Butaleja does not vary substantially over the course of the year, staying within 10 minutes of 12 hours throughout. In 2017, the shortest day is December 21, with 12 hours, 4 minutes of daylight; the longest day is June 21, with 12 hours, 11 minutes of daylight.

The earliest sunrise is at 6:25 AM on November 1, and the latest sunrise is 31 minutes later at 6:55 AM on February 10. The earliest sunset is at 6:30 PM on November 3, and the latest sunset is 31 minutes later at 7:00 PM on February 13.

Daylight saving time (DST) is not observed in Butaleja 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.

Butaleja experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 8.1 months, from March 9 to November 12, during which time the comfort level is muggy, oppressive, or miserable at least 25% of the time. The muggiest day of the year is May 4, with muggy conditions 66% of the time.

The least muggy day of the year is January 1, with muggy conditions 12% 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 Butaleja experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.1 months, from November 28 to April 1, with average wind speeds of more than 2.4 miles per hour. The windiest day of the year is February 10, with an average hourly wind speed of 3.0 miles per hour.

The calmer time of year lasts for 7.9 months, from April 1 to November 28. The calmest day of the year is May 23, with an average hourly wind speed of 1.9 miles per hour.

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

The wind is most often from the south for 4.3 months, from April 2 to August 11 and for 3.4 weeks, from September 19 to October 13, with a peak percentage of 44% on July 2. The wind is most often from the west for 1.3 months, from August 11 to September 19, with a peak percentage of 32% on August 21. The wind is most often from the east for 5.6 months, from October 13 to April 2, with a peak percentage of 62% on January 1.

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 2.5 months, from January 9 to March 23, with an average daily incident shortwave energy per square meter above 6.6 kWh. The brightest day of the year is March 2, with an average of 7.0 kWh.

The darker period of the year lasts for 4.1 months, from April 23 to August 25, with an average daily incident shortwave energy per square meter below 5.5 kWh. The darkest day of the year is May 11, with an average of 5.1 kWh.

For the purposes of this report, the geographical coordinates of Butaleja are 0.912 deg latitude, 33.951 deg longitude, and 3,510 ft elevation.

The topography within 2 miles of Butaleja contains only modest variations in elevation, with a maximum elevation change of 197 feet and an average elevation above sea level of 3,527 feet. Within 10 miles also contains only modest variations in elevation (387 feet). Within 50 miles contains only modest variations in elevation (10,814 feet).

The area within 2 miles of Butaleja is covered by cropland (46%), herbaceous vegetation (33%), and trees (19%), within 10 miles by cropland (53%) and herbaceous vegetation (18%), and within 50 miles by cropland (47%) and trees (18%).

This report illustrates the typical weather in Butaleja, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Butaleja.

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

The stations contributing to this reconstruction are: Kitale Airport (37%, 112 kilometers, east); Kakamega Airport (42%, 117 kilometers, southeast); and Entebbe Airport (22%, 194 kilometers, southwest).

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.