Zanzibar City weather by month
Zanzibar City runs from about 25°C in July to 29°C in February, with April the wettest month at 499 mm.
warmest month
February
29°C
coolest month
July
25°C
wettest month
April
499 mm
worst air month
January
12 µg/m³
The whole year, month by month.
| Month | Avg temp | Rain | Sun | PM2.5 |
|---|---|---|---|---|
| January | 28°C | 201 mm | 297 h | 12 |
| February | 29°C | 64 mm | 325 h | 10 |
| March | 29°C | 148 mm | 330 h | 6 |
| April | 26°C | 499 mm | 164 h | 4 |
| May | 26°C | 175 mm | 297 h | 6 |
| June | 26°C | 63 mm | 310 h | 7 |
| July | 25°C | 39 mm | 326 h | 6 |
| August | 25°C | 45 mm | 338 h | 7 |
| September | 26°C | 54 mm | 338 h | 7 |
| October | 27°C | 84 mm | 359 h | 7 |
| November | 28°C | 61 mm | 353 h | 6 |
| December | 27°C | 151 mm | 359 h | 7 |
About 3,796 hours of sun a year. Roughly 138 rainy days a year.
These are long-run climate normals, not a forecast. A given year can sit well outside them. PM2.5 is a global model: near the coast it counts sea salt as fine particulate and reads high against ground stations, sometimes by a factor of two. Use the shape of the year, not the absolute number.
where these numbers come from
- · Temperature, rainfall and sunshine: ECMWF ERA5 reanalysis climate normals via Open-Meteo (CC BY 4.0), fetched once and stored.
- · PM2.5: Copernicus CAMS reanalysis, monthly means. Modelled, not station readings; near coasts CAMS counts sea salt as PM2.5 and reads high.
Last reviewed 2026-05-22. Full method, licences and the list of sources we rejected are on the methodology page.