September weather forecastMtwara, Tanzania
September
Weather in September
September heralds a subtle shift in weather, maintaining a similarly dry pattern with slightly increased rainfall, up to 15mm (0.59"). Distinct conditions in Mtwara, Tanzania remain consistent with the preceding months marked by enduring hot days and cool nights. With prevalent sunshine, outdoor activities continue to be ideal. The temperature of the sea begins to rise slightly, maintaining favorable watersport conditions. Looking at these changes, an anticipation of more rainfall in the next month is predictable.Temperature
The introduction of September brings an average high temperature of a still hot 30°C (86°F), mirroring the readings of the previous month. The average low-temperature of 19°C (66.2°F) is witnessed during September.Rainfall
In September, in Mtwara, Tanzania, the rain falls for 4 days. Throughout September, 15mm (0.59") of precipitation is accumulated. In Mtwara, during the entire year, the rain falls for 128 days and collects up to 1102mm (43.39") of precipitation.Sea temperature
In September, the average sea temperature is 25.8°C (78.4°F).Note: For swimming, diving, and various water activities, the temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as highly enjoyable and comfortable for extended durations without any discomfort.
Daylight
In Mtwara, Tanzania, the average length of the day in September is 12h and 3min.On the first day of the month, sunrise is at 06:21 and sunset at 18:16. On the last day of September, in Mtwara, Tanzania, sunrise is at 06:03 and sunset at 18:14 EAT.
Sunshine
In September, the average sunshine in Mtwara, Tanzania, is 9h.UV index
January through April, September through December, with an average maximum UV index of 12, are months with the highest UV index in Mtwara. A UV Index estimate of 11, and higher, represents an excessive health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The average daily UV index of 12 in September transforms into the following instructions:
Carry out all important precautions, unprotected skin could get burns in no time. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Even on overcast days, apply and frequently reapply a sunscreen with SPF 30 or more, specifically after a swim or outdoor workout. Note! Reflective surfaces like sand and water heighten the UV radiation levels.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mtwara, Tanzania
- Average high temperature in September: 30°C
The warmest months (with the highest average high temperature) are January, February, March, April, October, November and December (31°C).
The month with the lowest average high temperature is July (29°C).
- Average low temperature in September: 19°C
The months with the highest average low temperature are January and February (24°C).
The coldest months (with the lowest average low temperature) are July, August and September (19°C).
Average rainfall in September
Mtwara, Tanzania
- Average rainfall in September: 15mm
The wettest month (with the highest rainfall) is January (199mm).
The driest month (with the least rainfall) is August (11mm).
Average rainfall days in September
Mtwara, Tanzania
- Average rainfall days in September: 4 days
The month with the highest number of rainy days is March (20 days).
The months with the least rainy days are June, August and September (4 days).
Average sea temperature in September
Mtwara, Tanzania
- Average sea temperature in September: 25.8°C
The best month for swimming (with the highest average sea temperature) is March (29.7°C).
The coldest month (with the lowest average sea temperature) is August (25.7°C).
Average daylight in September /
Average sunshine in September
Mtwara, Tanzania
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 12h and 42min).
The month with the shortest days is June (Average daylight: 11h and 30min).
- Average sunshine in September: 9h
The month with the most sunshine is October (Average sunshine: 10h).
The month with the least sunshine is March (Average sunshine: 6h).
Average UV index in September
Mtwara, Tanzania
- Average UV index in September: 12
The months with the highest UV index are January, February, March, April, September, October, November and December (UV index 12).
The months with the lowest UV index are June and July (UV index 9).





