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Arusha in September: Weather, Average temperature and Climate

Discover the weather for Arusha in September and if it’s a good time to travel (based on historical data).
Check flight prices to Arusha on Avionero:
September

Weather in Arusha in September 2025

Good Weather
Warm
☁️
Cloudy
Weather for Arusha in September is typically good with an average maximum temperature of +79°F during the day, and approximately 4 sunny days monthly. Typically, there are about 12 rainy days with the total average precipitation that falls in September around 10 mm. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+79°F
Avg. max. temperature
+50°F
Min.
+88°F
Max.
10 mm
Total precipitation
67%
Avg. humidity
3 m/s
Avg. wind
4 ☀️
Sunny Days
15 ⛅️
Cloudy
12 🌦
Rainy
Our opinion: Arusha has good weather in September.

Average temperature in Arusha in September

Here are the expected maximum, average and minimum temperatures in Arusha for September based on the historical data.
Last Year
Historical Data

The expected average maximum temperature in September is +82°F with a maximum of +88°F and a minimum of +57°F.

The average maximum temperature goes up 6% by the end of the month, compared with the beginning of the month, from +79°F to +81°F.

Is Arusha warm or cold in September?

Arusha is typically warm in September.

Maximum temperatures go up compared to the previous month from +75°F to +79°F. The minimum temperature also goes up from +57°F to +59°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

Take a look at how September is compared to other months in Arusha:

Climate in Arusha in September

Arusha weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+75°F+79°F+82°F
Min. temperature
+46°F+50°F+54°F
Max. temperature
+86°F+88°F+90°F
Rainfall
15 mm10 mm22 mm
Wind
2 m/s3 m/s3 m/s
Humidity
72%67%67%
Air pressure
1017 HPa1016 HPa1014 HPa
Sunny days
243
Cloudy days
131512
Rainy days
161216
Snowy days
000

September weather is still as good as in August. It’s getting warmer as September arrives. The average maximum temperature goes up from +75°F to +79°F during the day. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 15 mm to 10 mm. It feels drier, as humidity decreases from 72% to 67%. Winds are stronger in comparison to August, going up from 2 m/s to 3 m/s on average. The good news is there are likely to be more sunny days in September, from 2 to 4.

October brings much the same weather, it remains good.

Wind

Wind speed in Arusha in September based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Arusha is gradually increasing during September, going from 3 m/s to 4 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Arusha based on historical data.
Last Year
Historical Data
Total precipitation in September is about 4 mm, with a 3% chance of rain on a typical day. The maximum amount of rainfall per day is around 2 mm, which is considered light rain. Arusha is amazing in September with as little as 1 rainy days on average, so plan adventures in the great outdoors.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Arusha wettest month is April, where a typical day has a 93% chance of precipitation and 158 mm of rainfall per day. September, on the other hand, is the driest month with a mere 40% chance of precipitation and 10 mm of rainfall per day.

How was the weather last September in Arusha?

This is the weather in Arusha in September 2023:
1 September
☁️
+80°F
2 September
☀️
+81°F
3 September
☁️
+83°F
4 September
☀️
+81°F
5 September
☁️
+82°F
6 September
☁️
+80°F
7 September
☁️
+80°F
8 September
☁️
+78°F
9 September
☁️
+78°F
10 September
☁️
+82°F
11 September
☁️
+81°F
12 September
☁️
+84°F
13 September
☁️
+77°F
14 September
☁️
+80°F
15 September
☁️
+78°F
16 September
☀️
+81°F
17 September
☁️
+85°F
18 September
☁️
+81°F
19 September
☁️
+82°F
20 September
☀️
+85°F
21 September
☀️
+85°F
22 September
☁️
+82°F
23 September
☁️
+82°F
24 September
☁️
+79°F
25 September
☀️
+85°F
26 September
☀️
+87°F
27 September
☀️
+84°F
28 September
☁️
+79°F
29 September
☁️
+82°F
30 September
☀️
+81°F
In September 2023 Arusha had 9 sunny days, 21 cloudy days, and 0 rainy days. The average maximum temperature was +82°F, with an absolute maximum of +88°F and a minimum of +77°F. The average humidity was 66%, with a maximum of 100% and a minimum of 34%. The average wind speed was 4 m/s, with a maximum of 15 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Arusha climate has changed over the last 43 years.

The climate in Arusha in September has not changed that much over the last 43 years.

The average temperature was the lowest in 1989 (+77°F) and the highest in 2003 (+81°F). The driest year was 2009 with only 376 mm of rainfall, and the wettest year was 2020 with 1067 mm.

FAQ

Frequently asked questions about the weather in Arusha in September:

Is September a good time to visit Arusha?

September is a really good time to go to Arusha. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Arusha.

Can you sunbathe in Arusha in September?

September is warm in Arusha. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Arusha rainy in September?

Arusha is usually dry in September. Plan your packing around outdoor activities and exploring.

Is it sunny in Arusha in September?

Usually, it’s not very sunny in Arusha in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Tanzania

Check out the weather for other cities in Tanzania.

Monthly weather in Arusha

Source of the data

For this page, we’ve looked at the typical weather in Arusha, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.