Climate averages 1991–2020
Mtwara weather
in September.
A warm, very dry month: one of the coolest 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 Mtwara: daytime highs average 27.9°C and nights cool to about 22.7°C. By daytime temperature it is one of the coolest months of the year.
Expect about 9.6 mm of rain on roughly 3 days, which makes September a very dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 02 min on an average September day.
The nearest other city in this atlas is Lindi (59 km away). In September its highs average 29.7°C, 1.8°C warmer than Mtwara, with 12 mm of rain.
Among the 43 cities listed in Tanzania, Mtwara ranks joint 25th of 43 for the warmest September highs and 19th of 43 for the driest September (rainfall, lowest first). The mean September high of those 43 cities is 28.0°C; Mtwara is 0.1°C cooler than that mean.
From September to October, average highs rise by 0.5°C to 28.4°C, and monthly rainfall rises from 9.6 mm to 19 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
Mtwara climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 28.7°C25.8°C | 25.8°C | 186 | 20.5 | 12.613 h |
| February | 28.7°C25.7°C | 25.7°C | 146 | 18.6 | 12.412 h |
| March | 28.9°C25.2°C | 25.2°C | 182 | 23.8 | 12.212 h |
| April | 28.9°C24.7°C | 24.7°C | 115 | 18.5 | 11.912 h |
| May | 28.9°C23.9°C | 23.9°C | 37 | 7.2 | 11.712 h |
| June | 28.5°C22.6°C | 22.6°C | 8.0 | 1.8 | 11.512 h |
| July | 27.9°C21.9°C | 21.9°C | 4.9 | 1.3 | 11.612 h |
| August | 27.9°C22.0°C | 22.0°C | 5.7 | 1.6 | 11.812 h |
| September, selected | 27.9°C22.7°C | 22.7°C | 9.6 | 3.2 | 12.012 h |
| October | 28.4°C23.8°C | 23.8°C | 19 | 6.0 | 12.312 h |
| November | 29.0°C24.9°C | 24.9°C | 42 | 10.7 | 12.613 h |
| December | 29.0°C25.5°C | 25.5°C | 123 | 20.9 | 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
- Lindi in SeptemberTanzania · 59 kmHigh 29.7°C · Low 21.4°C · 12 mm rain
- Masasi in SeptemberTanzania · 159 kmHigh 31.0°C · Low 19.0°C · 2.1 mm rain
- Pemba in SeptemberMozambique · 303 kmHigh 28.8°C · Low 21.2°C · 11 mm rain
- Montepuez in SeptemberMozambique · 343 kmHigh 29.9°C · Low 18.1°C · 1.9 mm rain
- Moroni in SeptemberComoros · 371 kmHigh 27.9°C · Low 22.8°C · 20 mm rain
- Vikindu in SeptemberTanzania · 375 kmHigh 28.5°C · Low 22.2°C · 20 mm rain
- Dar es Salaam in SeptemberTanzania · 396 kmHigh 29.0°C · Low 22.4°C · 23 mm rain
- Kibaha in SeptemberTanzania · 413 kmHigh 29.8°C · Low 20.5°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 Mtwara) is explained once on the Mtwara year overview and on the Sources, method and limits page.