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Average Weather in Bwizibwera Uganda

The climate in Bwizibwera is warm and overcast. Over the course of the year, the temperature typically varies from 59°F to 82°F and is rarely below 56°F or above 88°F.

Based on the tourism score, the best time of year to visit Bwizibwera for warm-weather activities is from early June to mid September.

Climate Summary

warmJanFebMarAprMayJunJulAugSepOctNovDec55%55%19%19%overcastclearprecipitation: 4.1 inprecipitation: 4.1 in0.7 in0.7 inmuggy: 18%muggy: 18%0%0%drydrytourism score: 7.1tourism score: 7.15.15.1
Click on each chart for more information.

Temperature

The temperature in Bwizibwera varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.

Average High and Low Temperature

Average High and Low Temperature in BwizibweraJanFebMarAprMayJunJulAugSepOctNovDec0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°FSep 2080°FSep 2080°FFeb 1382°FFeb 1382°F59°F59°F60°F60°FDec 1278°FDec 1278°F60°F60°F59°F59°F59°F59°FLowHigh
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in BwizibweraJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcoolcomfortablecomfortablewarmcool
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Granada, Colombia (7,276 miles away) and Ejido, Venezuela (7,043 miles) are the far-away foreign places with temperatures most similar to Bwizibwera (view comparison).

Clouds

In Bwizibwera, 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 Bwizibwera begins around June 9 and lasts for 3.4 months, ending around September 23. On August 15, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 55% of the time, and overcast or mostly cloudy 45% of the time.

The cloudier part of the year begins around September 23 and lasts for 8.6 months, ending around June 9. On April 11, the cloudiest day of the year, the sky is overcast or mostly cloudy 81% of the time, and clear, mostly clear, or partly cloudy 19% of the time.

Cloud Cover Categories

Cloud Cover Categories in BwizibweraclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 1555%Aug 1555%Apr 1119%Apr 1119%Jun 937%Jun 937%Sep 2337%Sep 2337%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

Precipitation

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

The wetter season lasts 8.6 months, from September 5 to May 24, with a greater than 38% chance of a given day being a wet day. The chance of a wet day peaks at 66% on April 26.

The drier season lasts 3.4 months, from May 24 to September 5. The smallest chance of a wet day is 10% on July 4.

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 66% on April 26.

Daily Chance of Precipitation

Daily Chance of Precipitation in BwizibwerawetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Apr 2666%Apr 2666%Jul 410%Jul 410%Jan 136%Jan 136%Sep 538%Sep 538%May 2438%May 2438%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

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. Bwizibwera experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year in Bwizibwera. The most rain falls during the 31 days centered around April 16, with an average total accumulation of 4.1 inches.

The least rain falls around July 1, with an average total accumulation of 0.7 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Bwizibwera does not vary substantially over the course of the year, staying within 9 minutes of 12 hours throughout. In 2018, the shortest day is June 21, with 12 hours, 5 minutes of daylight; the longest day is December 22, with 12 hours, 10 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 6:36 AM on November 5, and the latest sunrise is 31 minutes later at 7:07 AM on February 13. The earliest sunset is at 6:45 PM on November 2, and the latest sunset is 31 minutes later at 7:15 PM on February 8.

Daylight saving time (DST) is not observed in Bwizibwera during 2018.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in BwizibweraJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMNov 56:36 AMNov 56:36 AM7:15 PMFeb 87:15 PMFeb 8Nov 26:45 PMNov 26:45 PM7:07 AMFeb 137:07 AMFeb 13daynightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

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.

Bwizibwera experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 7.8 months, from October 8 to June 3, during which time the comfort level is muggy, oppressive, or miserable at least 5% of the time. The muggiest day of the year is April 25, with muggy conditions 18% of the time.

The least muggy day of the year is July 28, when muggy conditions are essentially unheard of.

Humidity Comfort Levels

Humidity Comfort Levels in BwizibweramuggymuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 280%Jul 280%Apr 2518%Apr 2518%Oct 85%Oct 85%Jun 35%Jun 35%muggymuggyhumidhumidcomfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

Wind

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 Bwizibwera experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 4.1 months, from May 5 to September 8, with average wind speeds of more than 5.9 miles per hour. The windiest day of the year is July 5, with an average hourly wind speed of 7.1 miles per hour.

The calmer time of year lasts for 7.9 months, from September 8 to May 5. The calmest day of the year is November 17, with an average hourly wind speed of 4.7 miles per hour.

Average Wind Speed

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

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

The wind is most often from the north for 2.4 weeks, from January 2 to January 19, with a peak percentage of 35% on January 3. The wind is most often from the east for 3.3 months, from January 19 to April 29 and for 5.0 months, from August 2 to January 2, with a peak percentage of 45% on April 22. The wind is most often from the south for 3.1 months, from April 29 to August 2, with a peak percentage of 53% on July 3.

Wind Direction

Wind Direction in BwizibweraNESEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsoutheastnorth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Best Time of Year to Visit

To characterize how pleasant the weather is in Bwizibwera 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 Bwizibwera for general outdoor tourist activities is from early June to mid September, with a peak score in the third week of July.

Tourism Score

Tourism Score in Bwizibwerabest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.17.15.15.15.45.4 precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Bwizibwera for hot-weather activities is from mid June to early September, with a peak score in the last week of July.

Beach/Pool Score

Beach/Pool Score in Bwizibwerabest timeJanFebMarAprMayJunJulAugSepOctNovDec02468105.15.13.33.35.15.13.43.4 precipitationprecipitationtemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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.

Growing Season

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 Bwizibwera 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.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in BwizibweraJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 3100%Jul 3coolcomfortablewarmhot
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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.

Growing Degree Days

Growing Degree Days in BwizibweraJanFebMarAprMayJunJulAugSepOctNovDec0°F1,000°F2,000°F3,000°F4,000°F5,000°F6,000°F7,000°FJul 690°FJul 690°FAug 17900°FAug 17900°FOct 41,800°FOct 41,800°FJun 306,775°FJun 306,775°F
The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 1.7 months, from January 19 to March 11, with an average daily incident shortwave energy per square meter above 5.8 kWh. The brightest day of the year is February 10, with an average of 6.1 kWh.

The darker period of the year lasts for 1.1 months, from April 12 to May 15, with an average daily incident shortwave energy per square meter below 5.1 kWh. The darkest day of the year is May 1, with an average of 4.9 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in BwizibwerabrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWhFeb 106.1 kWhFeb 106.1 kWhMay 14.9 kWhMay 14.9 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Bwizibwera are -0.592 deg latitude, 30.629 deg longitude, and 4,629 ft elevation.

The topography within 2 miles of Bwizibwera contains only modest variations in elevation, with a maximum elevation change of 459 feet and an average elevation above sea level of 4,680 feet. Within 10 miles contains only modest variations in elevation (1,644 feet). Within 50 miles contains very significant variations in elevation (4,203 feet).

The area within 2 miles of Bwizibwera is covered by grassland (55%), cropland (27%), and artificial surfaces (10%), within 10 miles by grassland (48%) and cropland (31%), and within 50 miles by cropland (33%) and grassland (30%).

Data Sources

This report illustrates the typical weather in Bwizibwera, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Bwizibwera.

For each station, the records are corrected for the elevation difference between that station and Bwizibwera 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 Bwizibwera is computed as the weighted average of the individual contributions from each station, in addition to a contribution from the MERRA-2 reconstruction, corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Bwizibwera.

The station weigths are proportional to the inverse of the distance between Bwizibwera and a given station.

The weight assigned to the MERRA-2 value depends on the distance from Bwizibwera to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 11%.

The stations contributing to this reconstruction are: Bukoba Airport (46%, 156 kilometers, southeast) and Kigali International Airport (44%, 163 kilometers, south).

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.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.