September · Tanzania
Best time to visit Stone Town in September Weather, crowds & prices
Weather in Stone Town in September
Average temperature 26°C, 17 mm of rain, about 29 days with 6+ hours of sunshine and 75% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.0/10
Ranked #3 of 12 months
- Avg temp
- 26°C
- Rainfall
- 17 mm
- Humidity
- 75%
- Days with 6h+ sun
- 29
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$$ · Peak Season Rates ($$$)
September in Stone Town scores 8.0/10 for sightseeing and cultural travel - one of the top 12-month picks (#3). Expect around 26°C, 17 mm of rain, and roughly 29 days with 6+ hours of sunshine this month.
Stone Town is Zanzibar's historic quarter, a maze of alleys, carved doors, spice shops and the Forodhani waterfront.
September in Stone Town — reliably good (3rd best month)
September averages 26°C (79°F) and humidity near 75%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
Expect 17 mm of rain — occasional showers rather than washed-out days — alongside about 29 days with 6+ hours of sunshine and 12 daylight hours.
It scores 8/10 here, 3rd of 12 months, against 8.1/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary.
Plan for peak pricing, with 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 Stone Town in September?
- In September, Stone Town averages 26°C, 17 mm of rain, and about 29 days with 6+ hours of sunshine. Its climate-comfort score is 8.0/10.
- Is September a good time to visit Stone Town?
- September earns a 8.0/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Stone Town in September?
- Expect about 17 mm of rain in September. Average humidity is 75% and there are about 29 days with 6+ hours of sunshine.
Curated in Stone Town
Tickets & experiences
Things to do in Stone Town
Stone Town, Tanzania. Live activities and tours from GetYourGuide, matched to this destination.