Hot in May
30°C average high
avg high · 14° at night
25°C+ on 8 in 10 days
Tanzania
Zanzibar weather in May
Is it warm? Yes. May in Zanzibar is warm: afternoons average 28°C and nights 25°C. Most days (80%) peak between 27°C and 29°C.
Warm · average high
28°C
25°C or more on almost every day.
- Average low25°overnight
- Sea28°average, 2023–2025
- Rainy days16186 mm in the month
- SkyOften cloudy59% cloud · 14% clear days
How warm it really gets
Every May afternoon from 2011–2025: 465 days. Most (80%) peaked between 27° and 29°.
May, year by year
The average May high in each year. The warmest, 2024, averaged 29°C; the coolest, 2017, 27°C.
Compared with home
Average May highs. Expect rain on about 16 days (186 mm in a typical month).
- Zanzibar28°
- London17°
- Manchester16°
- Cork15°
- Dublin15°
- Glasgow15°
- Belfast14°
Warmer in May, not much further
Flying times are estimates from Dublin; Zanzibar is about 10h.
Very hot in May
35°C average high
avg high · 24° at night
25°C+ on almost every day · often 35°C+
Very hot in May
35°C average high
avg high · 21° at night
25°C+ on almost every day · often 35°C+
Air: ERA5 reanalysis via Open-Meteo, 2011–2025. Sea: Copernicus Marine analysis via Open-Meteo, 2023–2025. Rainy day = 2 mm or more. Clear day = average cloud cover of 30% or less. These are averages of past weather, not a forecast. Methodology