Zanzibar weather in September
September in Zanzibar: hot, dry, with clean air — one of the best months to visit.
#1 of 12 months in Zanzibar · #83 of 604 destinations to visit in September · comfort 90/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Zanzibar climate normals — September
| Daytime high | 29°C / 84°F | 🥵 hot |
|---|---|---|
| Nighttime low | 23°C / 74°F | |
| Feels like (high) | 32°C / 90°F | |
| Rainfall | 23 mm / 0.9 in | ☀️ dry |
| Rainy days | 8 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 20°C / 69°F | |
| Sunshine | 11.1 h/day | |
| Daylight | 12.1 h | |
| Wind | 19 km/h / 12 mph | |
| Air quality (US AQI) | 31 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Zanzibar?
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Zanzibar in September — FAQ
- Is September a good time to visit Zanzibar?
- September in Zanzibar: hot, dry, with clean air — one of the best months to visit. It ranks #1 of 12 months for Zanzibar on SeasonMap's comfort score (90/100).
- What is the weather like in Zanzibar in September?
- In September, Zanzibar averages a daily high of 29°C and a low of 23.3°C, with about 23.3 mm of rain over roughly 7.6 rainy days.
- What is the air quality in Zanzibar in September?
- Zanzibar has a mean US Air Quality Index of about 31 in September.