Antsiranana climate
Antsiranana (Madagascar) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 26 °C78 °F, and about 1,104 mm43 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Antsiranana climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2985 | 2576 | 2781 | 26711 |
| Feb | 2984 | 2577 | 2780 | 2128.3 |
| Mar | 2984 | 2576 | 2780 | 2017.9 |
| Apr | 2984 | 2475 | 2780 | 873.4 |
| May | 2984 | 2373 | 2678 | 381.5 |
| Jun | 2781 | 2170 | 2476 | 251.0 |
| Jul | 2780 | 2068 | 2474 | 200.8 |
| Aug | 2781 | 2068 | 2475 | 180.7 |
| Sep | 2883 | 2169 | 2476 | 160.6 |
| Oct | 2985 | 2271 | 2678 | 220.9 |
| Nov | 3087 | 2374 | 2780 | 491.9 |
| Dec | 3187 | 2476 | 2781 | 1485.8 |
| Year | 3187 | 2068 | 2678 | 1,10443 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 83% | 73% | 5.6 | 12:46 |
| Feb | 85% | 71% | 5.6 | 12:31 |
| Mar | 86% | 63% | 5.6 | 12:12 |
| Apr | 84% | 51% | 5.5 | 11:50 |
| May | 81% | 42% | 5.0 | 11:33 |
| Jun | 79% | 47% | 4.5 | 11:24 |
| Jul | 77% | 47% | 4.7 | 11:28 |
| Aug | 76% | 43% | 5.3 | 11:42 |
| Sep | 74% | 37% | 6.1 | 12:03 |
| Oct | 73% | 37% | 6.6 | 12:24 |
| Nov | 74% | 45% | 6.6 | 12:42 |
| Dec | 77% | 59% | 6.1 | 12:51 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Antsiranana is like
The warmest month is December, with an average high of 31 °C87 °F and a low of 24 °C76 °F. The coldest is July, when highs average 27 °C80 °F and lows 20 °C68 °F. Seasonal differences are small — just 3.9 °C7 °F between the warmest and the coolest month.
It is wet, with about 1,104 mm43 in of precipitation per year. The wettest three-month stretch is January–March, which brings 62% of the annual total. Months with less than 20 mm0.8 in on average: August and September. The wettest month is January (267 mm11 in), the driest is September (16 mm0.6 in).
Relative humidity ranges from 73% in October to 86% in March. The clearest skies (lowest average cloud amount, 37%) are typical of October. Average wind speed near the ground ranges from 11 km/h (7 mph) in February to 22 km/h (14 mph) in August. Daylight lasts from about 11.4 hours in June to 12.8 hours in December.
Best time to visit Antsiranana
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–October: average highs of 27 °C80 °F to 29 °C85 °F with 16 mm0.6 in to 38 mm1.5 in of precipitation per month.
The most challenging month is January, which is very wet (267 mm11 in) and humid (83% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Antsiranana
- Wetter months (December–March) — highs 2984 to 31 °C87 °F, lows 2476 to 25 °C77 °F, about 207 mm8.1 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (April–November) — highs 2780 to 30 °C87 °F, lows 2068 to 24 °C75 °F, about 34 mm1.4 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
How Antsiranana compares
Of the 7 places in Madagascar covered by World Climates, Antsiranana is the 3rd warmest by annual mean temperature and the 6th wettest by annual precipitation. See all of them on the Madagascar climate page.
Places in other countries with the most similar temperature and rainfall pattern: Pemba (Mozambique, Aw), Nacala (Mozambique, Aw) and Quelimane (Mozambique, Aw).
Nearby places
- Mamoudzou 444 km · 27 °C80 °F · 1,003 mm39 in
- Mahajanga 496 km · 27 °C80 °F · 1,457 mm57 in
- Toamasina 649 km · 25 °C77 °F · 1,952 mm77 in
- Moroni 660 km · 27 °C80 °F · 1,020 mm40 in
- Antananarivo 757 km · 18 °C64 °F · 2,383 mm94 in
- Antsirabe 873 km · 17 °C62 °F · 1,910 mm75 in
- Pemba 955 km · 26 °C79 °F · 1,174 mm46 in
- Nacala 964 km · 26 °C78 °F · 1,175 mm46 in
Frequently asked questions
What is the warmest month in Antsiranana?
December is the warmest month in Antsiranana, with an average high of 31 °C (87 °F) and an average low of 24 °C (76 °F).
What is the coldest month in Antsiranana?
July is the coldest month, with an average high of 27 °C (80 °F) and an average low of 20 °C (68 °F).
When does it rain the most in Antsiranana?
January is the wettest month with about 267 mm (10.5 in) of precipitation; September is the driest with about 16 mm (0.6 in).
What is the best time to visit Antsiranana?
Judging by long-term averages, the most comfortable months are May–October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 150 m, while Antsiranana lies at about 60 m. Temperatures on this page were therefore adjusted by +0.6 °C1.1 °F using the standard lapse rate of 6.5 °C per 1,000 m.