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Mwanza weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Mwanza?
For a warm holiday, the best week has been 2–8 June (Weather Index 99). Favourable start dates for a 7-day trip run from 11 May to 11 August. February, March and June are warmest (27°C), July is driest and July has the most sun.
- Warmest
- February, March and June 27°C
- Coolest
- November and December 25°C
- Driest
- July 7% rain-day chance
- Wettest
- November 83% rain-day chance
- Sunniest
- July 12 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Mwanza
Mwanza historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 25.6 | 21.6 | 60.3 | 18.7 | 126.3 | 11.1 |
| February | 26.7 | 22.2 | 45.4 | 12.7 | 87.9 | 11.4 |
| March | 26.6 | 21.9 | 60.0 | 18.6 | 149.4 | 10.9 |
| April | 25.9 | 21.5 | 70.0 | 21.0 | 214.5 | 10.1 |
| May | 26.4 | 21.5 | 31.6 | 9.8 | 60.0 | 11.0 |
| June | 26.5 | 21.0 | 11.0 | 3.3 | 15.9 | 11.4 |
| July | 26.2 | 20.5 | 6.8 | 2.1 | 14.8 | 11.6 |
| August | 26.1 | 21.0 | 28.1 | 8.7 | 54.5 | 11.4 |
| September | 26.0 | 21.4 | 54.7 | 16.4 | 118.5 | 11.0 |
| October | 25.7 | 21.6 | 71.3 | 22.1 | 189.0 | 10.5 |
| November | 25.3 | 21.3 | 83.0 | 24.9 | 253.8 | 10.1 |
| December | 25.3 | 21.4 | 81.3 | 25.2 | 205.7 | 10.7 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.