Climate averages 1991–2020
Masasi weather
in December.
A hot, 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 hot month in Masasi: daytime highs average 31.6°C and nights cool to about 22.2°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 103 mm of rain on roughly 15 days, which makes December a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 44 min on an average December day.
The nearest other city in this atlas is Lindi (128 km away). In December its highs average 30.7°C, 0.9°C cooler than Masasi, with 125 mm of rain.
Among the 43 cities listed in Tanzania, Masasi ranks 2nd of 43 for the warmest December highs and 11th of 43 for the driest December (rainfall, lowest first). The mean December high of those 43 cities is 27.1°C; Masasi is 4.5°C warmer than that mean.
From December to January, average highs fall by 1.1°C to 30.5°C, and monthly rainfall rises from 103 mm to 134 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
Masasi climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.5°C22.3°C | 22.3°C | 134 | 18.3 | 12.713 h |
| February | 29.7°C22.0°C | 22.0°C | 131 | 17.3 | 12.512 h |
| March | 28.8°C21.5°C | 21.5°C | 155 | 22.4 | 12.212 h |
| April | 28.5°C20.7°C | 20.7°C | 67 | 12.6 | 11.912 h |
| May | 29.3°C19.5°C | 19.5°C | 11 | 2.1 | 11.612 h |
| June | 28.3°C17.9°C | 17.9°C | 1.4 | 0.3 | 11.512 h |
| July | 27.9°C17.2°C | 17.2°C | 1.1 | 0.2 | 11.612 h |
| August | 29.2°C17.8°C | 17.8°C | 1.4 | 0.4 | 11.812 h |
| September | 31.0°C19.0°C | 19.0°C | 2.1 | 0.6 | 12.012 h |
| October | 32.2°C20.4°C | 20.4°C | 8.7 | 2.0 | 12.312 h |
| November | 32.9°C21.7°C | 21.7°C | 32 | 6.0 | 12.613 h |
| December, selected | 31.6°C22.2°C | 22.2°C | 103 | 15.0 | 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
- Lindi in DecemberTanzania · 128 kmHigh 30.7°C · Low 24.3°C · 125 mm rain
- Mtwara in DecemberTanzania · 159 kmHigh 29.0°C · Low 25.5°C · 123 mm rain
- Montepuez in DecemberMozambique · 269 kmHigh 30.2°C · Low 21.6°C · 151 mm rain
- Pemba in DecemberMozambique · 313 kmHigh 30.7°C · Low 24.8°C · 166 mm rain
- Songea in DecemberTanzania · 344 kmHigh 27.2°C · Low 18.6°C · 224 mm rain
- Ifakara in DecemberTanzania · 369 kmHigh 32.0°C · Low 23.0°C · 87 mm rain
- Vikindu in DecemberTanzania · 416 kmHigh 30.1°C · Low 24.6°C · 91 mm rain
- Dar es Salaam in DecemberTanzania · 436 kmHigh 30.2°C · Low 24.9°C · 94 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 Masasi) is explained once on the Masasi year overview and on the Sources, method and limits page.