September weather forecast
Dar es Salaam, Tanzania

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Weather in September

September in Dar es Salaam holds onto the trend of comfortable weather, presenting an agreeable blend of sunshine and cooler temperatures. The measure of rainfall remains low at 21mm (0.83"), adding to the beauty of the city without causing disruptions. Amidst this, the city enjoys nearly 12.1 hours of daylight complemented with 8.5 hours of sunshine. The annual cultural events occurring in this month further enhance the city's liveliness.

Temperature

The shift from August to September is characterized by an average high-temperature of a still warm 28.5°C (83.3°F), not significantly different from the 28.1°C (82.6°F) of August. An average low-temperature of 21.9°C (71.4°F) is expected during September.

Heat index

September's average heat index is estimated at a tropical 32°C (89.6°F). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', melds the effects of warmth and moisture to generate a feeling of heat. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.

Humidity

The months with the lowest humidity are July through September, with an average relative humidity of 75%.

Rainfall

September is the month with the least rainfall. Rain falls for 18.4 days and accumulates 21mm (0.83") of precipitation.

Sea temperature

In September, the average sea temperature is 25.9°C (78.6°F).
Note: For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In September, the average length of the day is 12h and 4min.
On the first day of September in Dar es Salaam, sunrise is at 06:23 and sunset at 18:22. On the last day of the month, sunrise is at 06:08 and sunset at 18:17 EAT.

Sunshine

In September, the average sunshine is 8.5h.

UV index

April through November, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The UV index of 6 during September leads to these advisories:
Eschew overexposure. Those with light skin may suffer burns in fewer than 20 minutes. 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. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Alert! UV radiation becomes sharper due to reflections from sand and water.

Frequently asked questions

How hot is September?

In September, the average high-temperature and low-temperature are 28.5°C (83.3°F) and 21.9°C (71.4°F) respectively. In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 32°C (89.6°F).

What is the least humid month in Dar es Salaam?

July through September, with an average relative humidity of 75%, are the least humid months.

What is the average humidity in September?

In September, the average relative humidity is 75%.

What is the driest month?

The month with the least rainfall is September, when the rain falls for 18.4 days and typically collects 21mm (0.83") of precipitation.

How much does it rain in September?

In Dar es Salaam, in September, it is raining for 18.4 days, with typically 21mm (0.83") of accumulated precipitation.

What is the water temperature in September?

In September, the average sea temperature is 25.9°C (78.6°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in September?

The average day length in September is 12h and 4min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 06:23 and sunset at 18:22. On the last day of the month, sunrise is at 06:08 and sunset at 18:17 EAT.

How long on average sun shines in September?

The average sunshine duration in September is 8.5h.

What are the months with the lowest UV index?

April through November, with an average maximum UV index of 6, are months with the lowest UV index.

How high is the UV index in September?

In Dar es Salaam, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.

Average temperature in September
Dar es Salaam, Tanzania

Average temperature in September - Dar es Salaam, Tanzania
  • Average high temperature in September: 28.5°C

The warmest months (with the highest average high temperature) are February and March (30.9°C).
The month with the lowest average high temperature is July (27.6°C).

  • Average low temperature in September: 21.9°C

The months with the highest average low temperature are January and February (25.3°C).
The coldest month (with the lowest average low temperature) is July (21.3°C).

Average pressure in September
Dar es Salaam, Tanzania

Average pressure in September - Dar es Salaam, Tanzania
  • Average pressure in September: 1015.8mbar

The month with the highest atmospheric pressure is July (1016.9mbar).
The month with the lowest atmospheric pressure is February (1010mbar).

Average wind speed in September
Dar es Salaam, Tanzania

Average wind speed in September - Dar es Salaam, Tanzania
  • Average wind speed in September: 12.8km/h

The windiest month (with the highest average wind speed) is July (15.6km/h).
The calmest month (with the lowest average wind speed) is March (9.5km/h).

Average humidity in September
Dar es Salaam, Tanzania

Average humidity in September - Dar es Salaam, Tanzania
  • Average humidity in September: 75%

The month with the highest relative humidity is April (81%).
The months with the lowest relative humidity are July, August and September (75%).

Average rainfall in September
Dar es Salaam, Tanzania

Average rainfall in September - Dar es Salaam, Tanzania
  • Average rainfall in September: 21mm

The wettest month (with the highest rainfall) is April (154mm).
The driest month (with the least rainfall) is September (21mm).

Average rainfall days in September
Dar es Salaam, Tanzania

Average rainfall days in September - Dar es Salaam, Tanzania
  • Average rainfall days in September: 18.4 days

The month with the highest number of rainy days is April (26.4 days).
The month with the least rainy days is June (17.5 days).

Average sea temperature in September
Dar es Salaam, Tanzania

Average sea temperature in September - Dar es Salaam, Tanzania
  • Average sea temperature in September: 25.9°C

The best months for swimming (with the highest average sea temperature) are March and April (29.2°C).
The coldest month (with the lowest average sea temperature) is August (25.7°C).

Average daylight in September /
Average sunshine in September
Dar es Salaam, Tanzania

Average daylight in September / Average sunshine in September - Dar es Salaam, Tanzania
  • Average daylight in September: 12h and 1min

The month with the longest days is December (Average daylight: 12h and 30min).
The month with the shortest days is June (Average daylight: 11h and 42min).

  • Average sunshine in September: 8h and 3min

The month with the most sunshine is November (Average sunshine: 10h and 30min).
The month with the least sunshine is April (Average sunshine: 8h and 0min).

Average sunshine days in September
Dar es Salaam, Tanzania

Average sunshine days in September - Dar es Salaam, Tanzania
  • Average sunshine days in September: 4.5 days

The month with the most sunshine days is June (7.8 days).
The month with the least sunshine days is April (2.6 days).

Average UV index in September
Dar es Salaam, Tanzania

Average UV index in September - Dar es Salaam, Tanzania
  • Average UV index in September: 6

The months with the highest UV index are January, February, March and December (UV index 7).
The months with the lowest UV index are April, May, June, July, August, September, October and November (UV index 6).

Average cloud cover in September
Dar es Salaam, Tanzania

Average cloud cover in September - Dar es Salaam, Tanzania
  • Average cloud cover in September: 32

The month with the most cloud cover is April (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 26).

Average visibility in September
Dar es Salaam, Tanzania

Average visibility in September - Dar es Salaam, Tanzania
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

Dar es Salaam, Tanzania

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