Arusha weather in September
September in Arusha: warm, dry, with clean air — an excellent time to visit.
#4 of 12 months in Arusha · #39 of 604 destinations to visit in September · comfort 91/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Arusha climate normals — September
| Daytime high | 25°C / 77°F | 🌤 warm |
|---|---|---|
| Nighttime low | 14°C / 57°F | |
| Feels like (high) | 25°C / 77°F | |
| Rainfall | 4 mm / 0.1 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 64% | 💧 humid |
| Dew point | 12°C / 54°F | |
| Sunshine | 10.5 h/day | |
| Daylight | 12.1 h | |
| Wind | 12 km/h / 8 mph | |
| Air quality (US AQI) | 36 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Arusha?
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Arusha in September — FAQ
- Is September a good time to visit Arusha?
- September in Arusha: warm, dry, with clean air — an excellent time to visit. It ranks #4 of 12 months for Arusha on SeasonMap's comfort score (91/100).
- What is the weather like in Arusha in September?
- In September, Arusha averages a daily high of 25.1°C and a low of 14.1°C, with about 3.8 mm of rain over roughly 1 rainy days.
- What is the air quality in Arusha in September?
- Arusha has a mean US Air Quality Index of about 36 in September.