Zanzibar in August
Low confidence or an estimate means our weather data for this area is less certain, so treat the score as a guide. It is about our data, not about the weather changing.
How scores are madeAugust figures
August scores
A score out of 100 for how pleasant the usual weather is for this kind of trip in this month. It is not a forecast.
How scores are made- 96/100ExcellentBeach
Zanzibar in August, in words
In August, Zanzibar scores 96 out of 100 (Excellent) for a beach holiday.
The daytime high in August averages 29°C; through the year it runs from 29°C in July to 33°C in February. At 29°C, August reaches the 24°C mark that our warm-areas pages use. The rain sources disagree for August: CHIRPS shows 0 mm and ERA5-Land about 31 mm. Both put August far below their wettest month, April, which has 253 mm in CHIRPS and 283 mm in ERA5-Land. Sunshine averages 7 h a day in August (ERA5 direct sunlight), against a yearly range of 5 h to 9 h. The sea is about 26°C in August (ERA5, about 25 km offshore), 3°C cooler than the daytime air.
The beach score for Zanzibar in August is based on daytime rain, the month's total rain, humid heat and sunshine, and does not include sea temperature. Zanzibar's city break score is the same number as its beach score in every month, so we show it once, under beach. For a beach holiday, Zanzibar ranks number 3 of the 29 areas we score for it in August, tied with 1 other area on 96.
For beach, the score is climbing: 94 in July, 96 in August, 98 in September. For beach, the best months are July, August and September, and August is one of them.
Tropical areas are scored mainly on rain and humid heat: for August the model uses 0 mm of rain from CHIRPS (CHIRPS is the drier of the two sources) and a heat index of 31°C. Tropical scores do not include sea conditions or cyclone risk. Day temperatures from ERA5-Land, adjusted for altitude with a tropical correction; monthly rain from CHIRPS satellite rainfall; sunshine from ERA5 direct sunlight; sea temperature from ERA5 about 25 km offshore. Averages for 2004–2023. These August figures for Zanzibar are averages for 2004–2023, not a forecast for your dates. Medium confidence: tropical areas are scored mainly on rain and sticky heat, which a climate model captures less exactly than temperature, so we never give them our highest confidence rating.
