Climate averages 1991–2020
Sumbawanga weather
in September.
A warm, very dry month: the 2nd warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Sumbawanga: daytime highs average 25.4°C and nights cool to about 14.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 8.2 mm of rain on roughly 1 day, which makes September a very dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 03 min on an average September day.
The nearest other city in this atlas is Mpanda (190 km away). In September its highs average 31.9°C, 6.5°C warmer than Sumbawanga, with 2.2 mm of rain.
Among the 43 cities listed in Tanzania, Sumbawanga ranks 36th of 43 for the warmest September highs and 18th of 43 for the driest September (rainfall, lowest first). The mean September high of those 43 cities is 28.0°C; Sumbawanga is 2.6°C cooler than that mean.
From September to October, average highs rise by 0.5°C to 25.9°C, and monthly rainfall rises from 8.2 mm to 39 mm.
The annual picture
September 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
Sumbawanga climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 22.4°C15.1°C | 15.1°C | 304 | 28.4 | 12.513 h |
| February | 22.8°C15.1°C | 15.1°C | 241 | 23.8 | 12.412 h |
| March | 22.7°C15.2°C | 15.2°C | 279 | 26.0 | 12.212 h |
| April | 22.3°C14.8°C | 14.8°C | 160 | 18.8 | 11.912 h |
| May | 22.7°C13.5°C | 13.5°C | 30 | 5.1 | 11.812 h |
| June | 22.6°C11.7°C | 11.7°C | 1.8 | 0.2 | 11.712 h |
| July | 22.5°C11.1°C | 11.1°C | 0.9 | 0.2 | 11.712 h |
| August | 23.9°C12.5°C | 12.5°C | 2.1 | 0.4 | 11.912 h |
| September, selected | 25.4°C14.2°C | 14.2°C | 8.2 | 1.1 | 12.112 h |
| October | 25.9°C15.9°C | 15.9°C | 39 | 5.7 | 12.312 h |
| November | 24.5°C15.9°C | 15.9°C | 148 | 15.6 | 12.512 h |
| December | 22.7°C15.3°C | 15.3°C | 282 | 26.4 | 12.613 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
September in nearby cities
- Mpanda in SeptemberTanzania · 190 kmHigh 31.9°C · Low 18.8°C · 2.2 mm rain
- Vwawa in SeptemberTanzania · 193 kmHigh 27.6°C · Low 14.3°C · 2.7 mm rain
- Tunduma in SeptemberTanzania · 195 kmHigh 26.5°C · Low 13.1°C · 2.6 mm rain
- Nakonde in SeptemberZambia · 197 kmHigh 27.4°C · Low 13.9°C · 2.6 mm rain
- Baudhuinville in SeptemberDemocratic Republic of the Congo · 229 kmHigh 28.9°C · Low 18.6°C · 12 mm rain
- Kasama in SeptemberZambia · 254 kmHigh 29.4°C · Low 15.1°C · 2.1 mm rain
- Katumba in SeptemberTanzania · 261 kmHigh 25.1°C · Low 14.1°C · 11 mm rain
- Kalemie in SeptemberDemocratic Republic of the Congo · 349 kmHigh 29.8°C · Low 21.9°C · 11 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 Sumbawanga) is explained once on the Sumbawanga year overview and on the Sources, method and limits page.