September weather forecast
Arusha, Tanzania

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Weather in September

September sees only a slight change in Arusha's weather. Rainfall remains stable at 20mm (0.79"), maintaining September as one of the driest months. It also marks the beginning of a slight warming period, with temperatures marginally increasing from those in August. However, sunshine hours and the UV index remain consistent as experienced in August.

Temperature

As September takes its course, Arusha's average high-temperature registers at a warm 24°C (75.2°F), closely aligning with the preceding month. Despite considerable daily temperature swings, a steady low-temperature average of 8°C (46.4°F) is noted in Arusha throughout September.

Rainfall

In Arusha, in September, it is raining for 2 days, with typically 20mm (0.79") of accumulated precipitation. In Arusha, during the entire year, the rain falls for 113 days and collects up to 1237mm (48.7") of precipitation.

Daylight

The average length of the day in September is 12h and 5min.
On the first day of September in Arusha, sunrise is at 06:31 and sunset at 18:34. On the last day of the month, sunrise is at 06:18 and sunset at 18:27 EAT.

Sunshine

In September, the average sunshine is 8h.

UV index

January through May, August through December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 12 during September translates into the following directions:
Adopt all essential precautions. Preventing sun harm is crucial. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What are the temperatures in Arusha in September?

The average high-temperature and low-temperature in Arusha during September are 24°C (75.2°F) and 8°C (46.4°F) respectively.

How many days does it rain in September in Arusha?

In Arusha, in September, during 2 rainfall days, 20mm (0.79") of precipitation is typically accumulated.

What is the average length of the day in September in Arusha?

In September, the average day length in Arusha, Tanzania, is 12h and 5min.

When is the sunrise / sunset in September in Arusha?

On the first day of September, sunrise is at 06:31 and sunset at 18:34. On the last day of the month, sunrise is at 06:18 and sunset at 18:27 EAT.

How long on average sun shines in September in Arusha?

In September, the average sunshine duration in Arusha, Tanzania, is 8h.

What are the months with the highest UV index in Arusha?

The months with the highest UV index are January through May, August through December, with an average maximum UV index of 12.

What is the UV index intensity in September in Arusha?

In September, the average daily maximum UV index is 12. A UV Index reading of 11, and higher, represents an extreme health threat from unsafe exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Arusha, Tanzania

Average temperature in September - Arusha, Tanzania
  • Average high temperature in September: 24°C

The warmest months (with the highest average high temperature) are January and February (29°C).
The months with the lowest average high temperature are June and July (21°C).

  • Average low temperature in September: 8°C

The month with the highest average low temperature is April (14°C).
The coldest month (with the lowest average low temperature) is September (8°C).

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Average rainfall in September
Arusha, Tanzania

Average rainfall in September - Arusha, Tanzania
  • Average rainfall in September: 20mm

The wettest month (with the highest rainfall) is April (368mm).
The driest month (with the least rainfall) is July (15mm).

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Average rainfall days in September
Arusha, Tanzania

Average rainfall days in September - Arusha, Tanzania
  • Average rainfall days in September: 2 days

The month with the highest number of rainy days is April (20 days).
The month with the least rainy days is September (2 days).

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Average daylight in September /
Average sunshine in September
Arusha, Tanzania

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

The month with the longest days is December (Average daylight: 12h and 18min).
The month with the shortest days is June (Average daylight: 11h and 54min).

  • Average sunshine in September: 8h

The month with the most sunshine is October (Average sunshine: 9h).
The months with the least sunshine are April, May, June and July (Average sunshine: 6h).

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Average UV index in September
Arusha, Tanzania

Average UV index in September - Arusha, Tanzania
  • Average UV index in September: 12

The months with the highest UV index are January, February, March, April, May, August, September, October, November and December (UV index 12).
The months with the lowest UV index are June and July (UV index 11).

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Arusha, Tanzania

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