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Antsiranana, Madagascar climate
Aw Tropical savanna (dry winter)
Antsiranana has a remarkably steady tropical climate (Tropical savanna (dry winter), Köppen Aw). The hottest month is December with an average daily high near 33°C, while the coldest is July averaging around 19°C at night. Precipitation totals about 1124 mm a year and is strongly seasonal — March alone averages 263 mm while August barely receives 3 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Antsiranana climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 31 | 32 | 32 | 31 | 30 | 30 | 30 | 30 | 32 | 33 | 33 |
| Avg temp (°C) | 27 | 27 | 27 | 27 | 27 | 25 | 25 | 25 | 25 | 26 | 27 | 28 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 22 | 20 | 19 | 20 | 20 | 21 | 22 | 23 |
| Precipitation (mm) | 246 | 226 | 263 | 79 | 39 | 11 | 26 | 3 | 10 | 8 | 5 | 208 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 31 | 32 | 32 | 31 | 30 |
| Avg temp (°C) | 27 | 27 | 27 | 27 | 27 | 25 |
| Avg low (°C) | 23 | 23 | 23 | 23 | 22 | 20 |
| Precipitation (mm) | 246 | 226 | 263 | 79 | 39 | 11 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 30 | 32 | 33 | 33 |
| Avg temp (°C) | 25 | 25 | 25 | 26 | 27 | 28 |
| Avg low (°C) | 19 | 20 | 20 | 21 | 22 | 23 |
| Precipitation (mm) | 26 | 3 | 10 | 8 | 5 | 208 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 12 | 12 | 10 | 5 | 3 | 2 | 3 | 3 | 3 | 3 | 4 | 7 |
| Days with high ≥ 32°C (days) | 12 | 9 | 11 | 14 | 9 | 2 | 0.3 | 0.4 | 2 | 10 | 19 | 20 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 12 | 12 | 10 | 5 | 3 | 2 |
| Days with high ≥ 32°C (days) | 12 | 9 | 11 | 14 | 9 | 2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 3 | 3 | 3 | 3 | 4 | 7 |
| Days with high ≥ 32°C (days) | 0.3 | 0.4 | 2 | 10 | 19 | 20 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 70 | 64 | 52 | 43 | 48 | 49 | 46 | 39 | 38 | 45 | 59 |
| Relative humidity (%) | 83 | 85 | 86 | 84 | 81 | 79 | 77 | 76 | 73 | 73 | 73 | 77 |
| Wind speed (km/h) | 11.9 | 11.4 | 12.0 | 15.3 | 17.6 | 20.2 | 21.8 | 22.5 | 22.6 | 21.1 | 18.0 | 13.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 70 | 64 | 52 | 43 | 48 |
| Relative humidity (%) | 83 | 85 | 86 | 84 | 81 | 79 |
| Wind speed (km/h) | 11.9 | 11.4 | 12.0 | 15.3 | 17.6 | 20.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 49 | 46 | 39 | 38 | 45 | 59 |
| Relative humidity (%) | 77 | 76 | 73 | 73 | 73 | 77 |
| Wind speed (km/h) | 21.8 | 22.5 | 22.6 | 21.1 | 18.0 | 13.3 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Antsiranana, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.