Climate averages 1991–2020
Mwanza weather
in December.
A warm, very wet month: the 11th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Mwanza: daytime highs average 24.5°C and nights cool to about 20.6°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 224 mm of rain on roughly 26 days, which makes December a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 16 min on an average December day.
The nearest other city in this atlas is Sengerema (32 km away). In December its highs average 25.2°C, 0.7°C warmer than Mwanza, with 167 mm of rain.
Among the 43 cities listed in Tanzania, Mwanza ranks 36th of 43 for the warmest December highs and joint 35th of 43 for the driest December (rainfall, lowest first). The mean December high of those 43 cities is 27.1°C; Mwanza is 2.6°C cooler than that mean.
From December to January, average highs rise by 0.5°C to 25.0°C, and monthly rainfall falls from 224 mm to 159 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Mwanza climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.0°C20.9°C | 20.9°C | 159 | 22.3 | 12.212 h |
| February | 25.9°C21.4°C | 21.4°C | 116 | 15.8 | 12.212 h |
| March | 25.9°C21.4°C | 21.4°C | 181 | 19.2 | 12.112 h |
| April | 25.4°C21.0°C | 21.0°C | 195 | 20.0 | 12.112 h |
| May | 25.7°C21.0°C | 21.0°C | 88 | 12.6 | 12.012 h |
| June | 25.7°C20.5°C | 20.5°C | 33 | 6.2 | 12.012 h |
| July | 25.5°C19.9°C | 19.9°C | 12 | 2.7 | 12.012 h |
| August | 25.5°C20.3°C | 20.3°C | 53 | 8.3 | 12.012 h |
| September | 25.7°C20.9°C | 20.9°C | 104 | 15.4 | 12.112 h |
| October | 25.1°C20.8°C | 20.8°C | 211 | 24.4 | 12.212 h |
| November | 24.4°C20.7°C | 20.7°C | 266 | 26.0 | 12.212 h |
| December, selected | 24.5°C20.6°C | 20.6°C | 224 | 25.7 | 12.312 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Sengerema in DecemberTanzania · 32 kmHigh 25.2°C · Low 17.4°C · 167 mm rain
- Geita in DecemberTanzania · 84 kmHigh 25.6°C · Low 17.3°C · 191 mm rain
- Katoro in DecemberTanzania · 120 kmHigh 25.4°C · Low 17.3°C · 201 mm rain
- Bunda in DecemberTanzania · 121 kmHigh 26.2°C · Low 17.9°C · 164 mm rain
- Bariadi in DecemberTanzania · 124 kmHigh 27.2°C · Low 18.1°C · 148 mm rain
- Shinyanga in DecemberTanzania · 140 kmHigh 28.0°C · Low 19.1°C · 113 mm rain
- Kahama in DecemberTanzania · 150 kmHigh 26.6°C · Low 17.7°C · 129 mm rain
- Ushirombo in DecemberTanzania · 150 kmHigh 26.5°C · Low 17.3°C · 151 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Mwanza) is explained once on the Mwanza year overview and on the Sources, method and limits page.