September · Tanzania
Best time to visit Zanzibar in September Weather, crowds & prices
Weather in Zanzibar in September
Average temperature 25°C, 40 mm of rain, about 30 days with 6+ hours of sunshine and 74% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.5/10
Ranked #3 of 12 months
- Avg temp
- 25°C
- Rainfall
- 40 mm
- Humidity
- 74%
- Days with 6h+ sun
- 30
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
September in Zanzibar scores 9.5/10 for beach and coastal travel - one of the top 12-month picks (#3). Expect around 25°C, 40 mm of rain, and roughly 30 days with 6+ hours of sunshine this month.
Zanzibar's Stone Town is a maze of coral-stone houses, carved doors, and spice warehouses, with beaches strung along the island's north and east coasts.
September is one of the strongest months in Zanzibar (3rd)
With 25°C (78°F) on average, September delivers classic beach weather: plenty of time in the water, with beach and boat plans rarely disrupted by cold.
With around 40 mm of rain, any showers tend to pass through rather than settle in; about 30 days with 6+ hours of sunshine and 12.1 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Zanzibar at 9.5/10 (3rd of 12), just behind February at 9.6/10.
Pack light clothing, swimwear and real sun protection.
Budget for peak pricing, and crowds are moderate. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Zanzibar in September?
- In September, Zanzibar averages 25°C, 40 mm of rain, and about 30 days with 6+ hours of sunshine. Its climate-comfort score is 9.5/10.
- Is September a good time to visit Zanzibar?
- September earns a 9.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Zanzibar in September?
- Expect about 40 mm of rain in September. Average humidity is 74% and there are about 30 days with 6+ hours of sunshine.
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