Climate averages 1991–2020
Njombe weather
in September.
A mild, very dry month: the 6th warmest and the 3rd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Njombe: daytime highs average 20.9°C and nights cool to about 9.4°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 3.6 mm of rain on fewer than one day, which makes September a very dry month (the 3rd 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 Makumbako (56 km away). In September its highs average 23.5°C, 2.6°C warmer than Njombe, with almost no rain (under 1 mm).
Among the 43 cities listed in Tanzania, Njombe ranks 43rd of 43 for the warmest September highs and joint 12th of 43 for the driest September (rainfall, lowest first). The mean September high of those 43 cities is 28.0°C; Njombe is 7.1°C cooler than that mean.
From September to October, average highs rise by 1.3°C to 22.3°C, and monthly rainfall rises from 3.6 mm to 18 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
Njombe climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 21.5°C13.4°C | 13.4°C | 268 | 26.5 | 12.613 h |
| February | 21.6°C13.3°C | 13.3°C | 263 | 23.8 | 12.412 h |
| March | 20.8°C13.6°C | 13.6°C | 228 | 27.2 | 12.212 h |
| April | 19.6°C13.2°C | 13.2°C | 83 | 18.5 | 11.912 h |
| May | 19.0°C11.0°C | 11.0°C | 18 | 5.4 | 11.712 h |
| June | 18.0°C8.6°C | 8.6°C | 3.0 | 0.8 | 11.612 h |
| July | 17.5°C7.6°C | 7.6°C | 2.2 | 0.4 | 11.612 h |
| August | 18.9°C8.4°C | 8.4°C | 3.7 | 0.9 | 11.812 h |
| September, selected | 20.9°C9.4°C | 9.4°C | 3.6 | 0.9 | 12.012 h |
| October | 22.3°C11.2°C | 11.2°C | 18 | 5.5 | 12.312 h |
| November | 22.6°C12.7°C | 12.7°C | 54 | 10.5 | 12.513 h |
| December | 21.7°C13.4°C | 13.4°C | 171 | 20.8 | 12.713 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
- Makumbako in SeptemberTanzania · 56 kmHigh 23.5°C · Low 12.6°C · 0.8 mm rain
- Katumba in SeptemberTanzania · 127 kmHigh 25.1°C · Low 14.1°C · 11 mm rain
- Mafinga in SeptemberTanzania · 130 kmHigh 22.7°C · Low 12.0°C · 3.1 mm rain
- Songea in SeptemberTanzania · 177 kmHigh 27.0°C · Low 14.5°C · 4.2 mm rain
- Vwawa in SeptemberTanzania · 203 kmHigh 27.6°C · Low 14.3°C · 2.7 mm rain
- Iringa in SeptemberTanzania · 203 kmHigh 24.2°C · Low 12.7°C · 1.2 mm rain
- Tunduma in SeptemberTanzania · 220 kmHigh 26.5°C · Low 13.1°C · 2.6 mm rain
- Nakonde in SeptemberZambia · 222 kmHigh 27.4°C · Low 13.9°C · 2.6 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 Njombe) is explained once on the Njombe year overview and on the Sources, method and limits page.