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Climate · Zanzibar (Stone Town)

Zanzibar (Stone Town) in September

Hot and damp, as the days hold steady.

Typical weather, averaged over 30 years

September in Zanzibar (Stone Town) is hot: highs near 87°F, lows near 74°F. Rain falls on about three days a week, less often as the month goes on, and daylight holds at about 12 hours 5 minutes.September in Zanzibar (Stone Town) is hot: highs near 31°C, lows near 23°C. Rain falls on about three days a week, less often as the month goes on, and daylight holds at about 12 hours 5 minutes.

High
87°F31°Caverage
Low
74°F23°Caverage
Wet days
3a week · 37% of days
Daylight
12h 05mon average

Is September a good time to visit Zanzibar (Stone Town)?

Yes. September is one of Zanzibar (Stone Town)'s best months (June to September).

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How September sits in the year

week by week

Temperature

Highs near 87°F in September, against 84°F to 90°F through the year.Highs near 31°C in September, against 29°C to 32°C through the year.

Chance of a wet day

37% of days in September, against 37% to 92% through the year.

Cloud cover

37% cover in September, against 37% to 72% through the year.

Daylight

12h 05m in September, against 11h 46m to 12h 28m through the year.

Week by week, lightly smoothed, with September shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. August85°29°low 73°low 23°3 wet days a weekRain on about three days a week.
  2. September87°31°low 74°low 23°3 wet days a weekRain on about three days a week.
  3. October88°31°low 75°low 24°3 wet days a weekRain on about three days a week.

Where Zanzibar (Stone Town) sits, in September

Africa/Dar es Salaam
this place
typical high in September 40°F4°C95°F35°C
Sunrise, mid-September
6:17 AMsets 6:21 PM
Above the sea
10 mlow-lying
Latitude
6.2°Ssouthern hemisphere
Nearest of ours
Dongwe38 km east

The land around Zanzibar (Stone Town), shaded by its typical high in September, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Tanzania in September

high · low · wet days
See September on the planning mapThe whole year in Zanzibar (Stone Town)

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Zanzibar (Stone Town). Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.