Weather in Zanzibar in June

How June compares

June is the 11th warmest month of the year in Zanzibar and ranks 60th of 134 destinations we compare for June - see where else is hot in June. Against London's average high of 19.6°C in June, Zanzibar is 7.8°C warmer by day and 12.1°C warmer at night.

Daytime and night-time in June

The typical June day in Zanzibar peaks at 27.4°C, but that is an average: the warmest 10% of days reach 28.5°C or more. About 100% of days top 25°C. Nights average 23.4°C; one night in ten drops to 22.7°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest June day here reached 29.8°C (2015-06-06) and the coldest night 21.6°C (2018-06-24).

Rain in June

Wet (more than 8 rainy days): about 11 days with 1 mm or more, 38 mm in total. Year to year it varies a lot - the wettest June was 1999 with 86 mm, the driest 1995 with 14 mm. Humidity averages 78%.

Sea temperature in June

The sea averages 26.9°C - warm enough to swim (22°c+). Depending on the year it ranges from 26.5°C to 27.3°C. For the warmest sea here, come in March (29.0°C).

Sunshine and daylight

Around 6.3 hours of sunshine a day (estimated from cloud cover), 11.6 hours of daylight: the sun rises about 06:31 and sets about 18:17 local time in mid-June. Average cloud cover is 46%.

Is June a good time to visit Zanzibar?

It is a reasonable choice: hot days but expect showers. The best months for Zanzibar on our scoring are September, August, July; months averaging 25°C or more: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec.

Hot enough for the beach, with warm nights

June sits towards the cooler end of Zanzibar's year, but that is relative: it still feels hot compared with a British summer. Average nights stay around 23°C, so do not expect much evening coolness. Humidity of 78% can make the warmth feel sticky, particularly when you are active, and accommodation with cooling is a sensible priority if you struggle to sleep in heat. Pack loose, breathable clothes and keep strenuous plans away from midday. This month suits travellers who want consistent warmth without regularly facing temperatures above 30°C, though the humidity means it is not a crisp or particularly cool alternative.

Warm swimming water, but leave room for rain

The sea averages 26.9°C, making June a comfortable choice if swimming is central to your holiday. The catch is the weather around it: about 11 rainy days mean you should leave room to rearrange beach time rather than expect every day to stay dry. That figure does not tell you how long rain will last, so it is not a reason to write off whole days either. Sunshine averages about 6.3 hours within 11.6 hours of daylight, leaving a meaningful gap between daylight and sunshine. Bring a light waterproof and sun protection, and judge outdoor plans by the forecast rather than assuming a fixed daily pattern.