Climate averages 1991–2020
Kasulu weather
in September.
A hot, fairly dry month: the warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a hot month in Kasulu: daytime highs average 30.0°C and nights cool to about 17.8°C. By daytime temperature it is the warmest month of the year.
Expect about 36 mm of rain on roughly 6 days, which makes September a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 05 min on an average September day.
The nearest other city in this atlas is Kigoma (62 km away). In September its highs average 27.9°C, 2.0°C cooler than Kasulu, with 24 mm of rain.
Among the 43 cities listed in Tanzania, Kasulu ranks 10th of 43 for the warmest September highs and 33rd of 43 for the driest September (rainfall, lowest first). The mean September high of those 43 cities is 28.0°C; Kasulu is 2.0°C warmer than that mean.
From September to October, average highs fall by 1.6°C to 28.4°C, and monthly rainfall rises from 36 mm to 136 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
Kasulu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 25.5°C17.2°C | 17.2°C | 235 | 28.2 | 12.412 h |
| February | 26.1°C17.5°C | 17.5°C | 191 | 24.5 | 12.312 h |
| March | 26.0°C17.6°C | 17.6°C | 214 | 27.3 | 12.112 h |
| April | 25.5°C17.5°C | 17.5°C | 172 | 23.7 | 12.012 h |
| May | 26.0°C17.3°C | 17.3°C | 68 | 11.0 | 11.912 h |
| June | 26.8°C16.1°C | 16.1°C | 14 | 3.0 | 11.912 h |
| July | 27.6°C15.6°C | 15.6°C | 2.8 | 0.8 | 11.912 h |
| August | 28.9°C16.6°C | 16.6°C | 10 | 1.8 | 12.012 h |
| September, selected | 30.0°C17.8°C | 17.8°C | 36 | 6.2 | 12.112 h |
| October | 28.4°C18.1°C | 18.1°C | 136 | 17.0 | 12.212 h |
| November | 25.9°C17.4°C | 17.4°C | 231 | 25.4 | 12.312 h |
| December | 25.1°C17.1°C | 17.1°C | 257 | 28.9 | 12.412 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
- Kigoma in SeptemberTanzania · 62 kmHigh 27.9°C · Low 24.2°C · 24 mm rain
- Gitega in SeptemberBurundi · 129 kmHigh 25.5°C · Low 16.1°C · 16 mm rain
- Bujumbura in SeptemberBurundi · 156 kmHigh 27.7°C · Low 23.2°C · 6.8 mm rain
- Uvira in SeptemberDemocratic Republic of the Congo · 169 kmHigh 28.1°C · Low 24.0°C · 6.8 mm rain
- Kalemie in SeptemberDemocratic Republic of the Congo · 183 kmHigh 29.8°C · Low 21.9°C · 11 mm rain
- Mpanda in SeptemberTanzania · 224 kmHigh 31.9°C · Low 18.8°C · 2.2 mm rain
- Kalima in SeptemberDemocratic Republic of the Congo · 232 kmHigh 31.4°C · Low 20.1°C · 55 mm rain
- Ushirombo in SeptemberTanzania · 239 kmHigh 30.4°C · Low 18.8°C · 24 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 Kasulu) is explained once on the Kasulu year overview and on the Sources, method and limits page.