Climate in Lake Victoria

Average daytime and nighttime temperatures

All climate diagrams on this site result from the collected data from two measuring weather stations in Lake Victoria.
Weather stations at an altitude above 1500m have not been included.
All data correspond to the average monthly values of the last 20 years.

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Lake Victoria is one of the coldest regions in Tanzania with an average daily high temperature of only 28 degrees. It is warm or hot yearlong.
Overview: Climate in Tanzania
Daylengths and sun positions in Tanzania
Compare climate with other regions or countries
Sunshine hours per day
The number of hours of sunshine refers to the time when the sun is actually visible. That is, without any obstruction of visibility by clouds, fog or mountains. With 9 hours per day, June is the sunniest month in the greater region of Lake Victoria. In December, the sun shines the least.
Rain days per month
A rain day is a day on which at least 0.1 mm precipitation (=0.1 liter) per square meter falls. This can be rain, snow, hail or even dew. So it does not have to rain the whole day. With 14 rain days, November offers the most rain days, while July has the fewest.
Precipitation amount in mm/day
The amount of precipitation is measured in millimeters per square meter. Thus, at two mm/day, two liters of water fall on one square meter within 24 hours. With only 0.2 mm, the least amount of rain falls in July. April, on the other hand, has the most rain.
Relative humidity in %
Warm air can absorb more moisture than cold air. The relative humidity indicates how much moisture can be physically contained in the air. At high humidity, a person feels uncomfortable and perceives this as oppressive. In general, a relative humidity of 40-60% feels pleasant. With humidity averaging 77%, April is the most uncomfortable. In July, on the other hand, it is easier to endure.
Absolute humidity in g/m³
In warm months, there is also a higher absolute humidity almost everywhere. At a temperature of 25°C, air can absorb up to 23 grams of water per cubic meter. At 20°C, it is only 17.3 grams. A relative humidity of 40% at 25°C thus corresponds to an absolute humidity of 9.2 grams of water. From a proportion of approx. 13.5 grams, humans perceive the air as muggy. This limit is reached for 10 months in Lake Victoria, although these are average values, and a month is rarely completely or not at all humid.
The "Humidex" (humidity index) is an index of well-being in warmer areas, calculated from the air temperature, relative humidity and dew point. The index corresponds approximately to the temperature felt. At high temperatures, the body transports heat away by sweating. At high humidity, the ambient air can only absorb a small amount of sweat and thus one feels uncomfortable. An index of 20-29 is considered comfortable. Up to 39, people perceive the air as slightly uncomfortable, and above 40, as very uncomfortable. Values above 45 are dangerous in the long run and often lead to heat stroke.
Map of Lake Victoria

Most important cities in the greater region »Lake Victoria«

The greater region has a west-east extension of about 470 km and over 310 km from north to south.

It consists of the six regions Geita, Kagera, Mara, Mwanza, Shinyanga and Simiyu.

CityPopulationGeo position
Mwanza706,4532° 31' 0"S32° 53' 60"E
Musoma121,1191° 30' 0"S33° 47' 60"E
Shinyanga107,3623° 39' 50"S33° 25' 16"E
Ushirombo95,0523° 29' 31"S31° 57' 50"E
Bukoba70,6281° 19' 54"S31° 48' 44"E
Uyovu60,8493° 16' 60"S31° 31' 33"E
Buseresere52,8703° 1' 25"S31° 52' 29"E
Bunda50,9442° 2' 60"S33° 52' 0"E
Katoro49,6913° 1' 13"S31° 53' 45"E
Geita40,0002° 52' 0"S32° 10' 0"E
Kahama36,0143° 49' 60"S32° 36' 0"E
Misungwi35,5302° 51' 0"S33° 4' 60"E
Masumbwe34,7803° 37' 60"S32° 10' 60"E
Biharamulo34,0382° 37' 55"S31° 18' 32"E
Somanda33,9323° 22' 0"S33° 57' 0"E
Bariadi33,8652° 47' 60"S33° 58' 60"E
Tarime33,0941° 21' 0"S34° 22' 0"E
Bugarama32,4942° 52' 14"S30° 31' 41"E
Kisesa29,8043° 4' 60"S34° 8' 60"E
Chato27,7762° 38' 16"S31° 46' 1"E
Kasamwa27,6812° 51' 0"S32° 25' 60"E
Nyalikungu24,6483° 10' 60"S33° 46' 60"E
Sirari24,3171° 15' 13"S34° 28' 33"E
Old Shinyanga23,7473° 32' 60"S33° 23' 60"E
Songwa23,6183° 31' 0"S33° 31' 0"E
Mwadui23,2963° 32' 60"S33° 36' 0"E
Ngudu22,6582° 58' 0"S33° 19' 60"E
Lalago22,5513° 27' 0"S33° 57' 0"E
Tinde22,0823° 52' 60"S33° 12' 0"E
Rulenge22,0692° 43' 3"S30° 37' 57"E

Data basis: German Weather Service, individual values averaged and supplemented by own elements. Data on cities and inhabitants:, United Nations Statistics Division and own research.
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