Weather in Arusha in September 2025
Average weather
Average temperature in Arusha in September
The temperature in September is +27°C on average, with a range between a maximum of +30°C during the day and a minimum of +15°C at night.
The average maximum temperature goes up 7% by the end of the month, compared with the beginning of the month, from +26°C to +27°C.
Is Arusha warm or cold in September?
Arusha is typically warm in September.
Maximum temperatures go up compared to the previous month from +24°C to +26°C. The minimum temperature also goes up from +14°C to +15°C.
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
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +24°C | +26°C | +28°C | ||||
| Min. temperature | ||||||
| +8°C | +10°C | +11°C | ||||
| Max. temperature | ||||||
| +30°C | +31°C | +33°C | ||||
| Rainfall | ||||||
| 14 mm | 20 mm | 81 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 76% | 72% | 72% | ||||
| Air pressure | ||||||
| 1018 HPa | 1017 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 1 | 2 | 2 | ||||
| Cloudy days | ||||||
| 17 | 15 | 9 | ||||
| Rainy days | ||||||
| 12 | 12 | 20 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as good as in August. It’s getting warmer as September arrives. The average maximum temperature goes up from +24°C to +26°C during the day. Prepare for more rain. Average rainfall goes from 14 mm to 20 mm. It feels drier, as humidity decreases from 76% to 72%. The average wind speed doesn’t change much during September, staying around 1 m/s. The good news is there are likely to be more sunny days in September, from 1 to 2.
October brings much the same weather, it remains good.
Wind
The average wind speed is 2 m/s getting up to 3 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 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Arusha?
Climate Change over Years
The climate in Arusha in September has not changed much over the last 43 years.
The average temperature was the lowest in 1989 (+25°C) and the highest in 2012 (+28°C). The driest year was 2022 with only 1539 mm of rainfall, and the wettest year was 2020 with 3628 mm.
FAQ
Is September a good time to visit Arusha?
Can you sunbathe in Arusha in September?
Is Arusha rainy in September?
Is it sunny in Arusha in September?
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.
