A consolidated reference for Zanzibar climate: monthly averages, rebuilt from public data on a schedule. Expect 25.5 C at the coldest (Jul) and 28.6 C at the warmest (Mar) — a 3.1 C spread. Expect a wet season rather than rain year-round: Apr brings 8.54 mm/day against 0.42 mm/day in Jul. Taken together that is roughly 1,006 mm of rain a year for the grid cell. Because each page is rebuilt independently, one unavailable upstream never takes the rest of the site down. Scroll for the month-by-month figures, or jump to a neighbouring location from the links below.
Annual mean temperature 27.2 C
Warmest month Mar (28.6 C)
Coldest month Aug (25.5 C)
Wettest month Apr (8.54 mm/day)
All-time record high 32.4 C
All-time record low 21.9 C
Annual precipitation 1,007 mm / year
Coordinates -6.1639, 39.1979
Population 709,809
Average monthly temperature and rainfall in Zanzibar
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
28.1
2.01
31.2
25.5
Feb
28.4
1.80
32.4
25.2
Mar
28.6
3.83
32.3
25.5
Apr
28.2
8.54
31.8
25.3
May
27.2
5.99
30.5
24.1
Jun
26.2
0.96
29.5
22.9
Jul
25.5
0.42
28.2
21.9
Aug
25.5
0.44
28.4
22.8
Sep
25.9
0.72
29.2
23.1
Oct
26.9
2.05
30.4
24.1
Nov
27.8
3.37
31.0
25.0
Dec
28.3
2.96
31.1
26.1
What the Zanzibar climate table shows
Values are multi-decadal climatological averages for the -6.1639, 39.1979 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.
Frequently asked questions
Does Zanzibar get the same every year?
Close to it. Averaging decades smooths variation, so treat these as typical rather than guaranteed.