Climate averages 1991–2020
Njombe weather
in December.
A mild, wet month: the 3rd warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Njombe: daytime highs average 21.7°C and nights cool to about 13.4°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 171 mm of rain on roughly 21 days, which makes December a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 39 min on an average December day.
The nearest other city in this atlas is Makumbako (56 km away). In December its highs average 24.0°C, 2.3°C warmer than Njombe, with 162 mm of rain.
Among the 43 cities listed in Tanzania, Njombe ranks 43rd of 43 for the warmest December highs and 32nd of 43 for the driest December (rainfall, lowest first). The mean December high of those 43 cities is 27.1°C; Njombe is 5.4°C cooler than that mean.
From December to January, average highs fall by 0.2°C to 21.5°C, and monthly rainfall rises from 171 mm to 268 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
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 | 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, selected | 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
December in nearby cities
- Makumbako in DecemberTanzania · 56 kmHigh 24.0°C · Low 15.7°C · 162 mm rain
- Katumba in DecemberTanzania · 127 kmHigh 25.1°C · Low 17.4°C · 400 mm rain
- Mafinga in DecemberTanzania · 130 kmHigh 23.1°C · Low 14.9°C · 288 mm rain
- Songea in DecemberTanzania · 177 kmHigh 27.2°C · Low 18.6°C · 224 mm rain
- Vwawa in DecemberTanzania · 203 kmHigh 24.7°C · Low 16.0°C · 224 mm rain
- Iringa in DecemberTanzania · 203 kmHigh 24.2°C · Low 15.4°C · 131 mm rain
- Tunduma in DecemberTanzania · 220 kmHigh 24.0°C · Low 15.1°C · 249 mm rain
- Nakonde in DecemberZambia · 222 kmHigh 24.8°C · Low 15.9°C · 249 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.