Warm in Dec
24°C average high
avg high · 14° at night
25°C+ on 3 in 10 days
Tanzania
Zanzibar weather in December
Is it warm? Yes. December in Zanzibar is hot: afternoons average 30°C and nights 26°C. Most days (80%) peak between 29°C and 32°C.
Hot · average high
30°C
25°C or more on almost every day.
- Average low26°overnight
- Sea30°average, 2023–2025
- Rainy days1299 mm in the month
- SkyOften cloudy54% cloud · 21% clear days
How warm it really gets
Every December afternoon from 2011–2025: 465 days. Most (80%) peaked between 29° and 32°.
December, year by year
The average December high in each year. The warmest, 2022, averaged 32°C; the coolest, 2021, 30°C.
Compared with home
Average December highs. Expect rain on about 12 days (99 mm in a typical month).
- Zanzibar30°
- Cork10°
- Dublin9°
- London9°
- Belfast8°
- Manchester8°
- Glasgow7°
Other warm places in December
Flying times are estimates from Dublin; Zanzibar is about 10h.
Warm in Dec
25°C average high
avg high · 22° at night
25°C+ on 5 in 10 days
Warm in Dec
26°C average high
avg high · 21° at night
25°C+ on 8 in 10 days
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