Toamasina climate
Toamasina (Madagascar) has a tropical monsoon climate (Köppen Am). The average temperature over the year is 25 °C77 °F, and about 1,952 mm77 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Toamasina climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2984 | 2577 | 2781 | 30912 |
| Feb | 2984 | 2578 | 2781 | 26510 |
| Mar | 2883 | 2577 | 2780 | 30612 |
| Apr | 2781 | 2476 | 2679 | 1797.0 |
| May | 2679 | 2374 | 2576 | 1385.4 |
| Jun | 2576 | 2271 | 2374 | 1254.9 |
| Jul | 2475 | 2169 | 2272 | 1254.9 |
| Aug | 2475 | 2068 | 2272 | 803.2 |
| Sep | 2576 | 2169 | 2373 | 602.3 |
| Oct | 2679 | 2271 | 2475 | 692.7 |
| Nov | 2781 | 2374 | 2577 | 963.8 |
| Dec | 2983 | 2576 | 2780 | 2017.9 |
| Year | 2984 | 2068 | 2577 | 1,95277 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 84% | 75% | 6.0 | 13:06 |
| Feb | 84% | 71% | 5.8 | 12:43 |
| Mar | 85% | 68% | 5.3 | 12:14 |
| Apr | 84% | 60% | 4.7 | 11:42 |
| May | 83% | 62% | 3.9 | 11:16 |
| Jun | 82% | 65% | 3.5 | 11:03 |
| Jul | 82% | 66% | 3.7 | 11:08 |
| Aug | 81% | 61% | 4.5 | 11:30 |
| Sep | 80% | 54% | 5.5 | 12:01 |
| Oct | 80% | 54% | 6.1 | 12:33 |
| Nov | 80% | 58% | 6.6 | 12:00 |
| Dec | 82% | 63% | 6.6 | 13:13 |
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 Toamasina is like
The warmest month is February, with an average high of 29 °C84 °F and a low of 25 °C78 °F. The coldest is August, when highs average 24 °C75 °F and lows 20 °C68 °F. Seasonal differences are small — just 5 °C9.1 °F between the warmest and the coolest month.
It is wet, with about 1,952 mm77 in of precipitation per year. The wettest three-month stretch is January–March, which brings 45% of the annual total. The wettest month is January (309 mm12 in), the driest is September (60 mm2.3 in).
Relative humidity ranges from 80% in October to 85% in March. The clearest skies (lowest average cloud amount, 54%) are typical of September. Average wind speed near the ground ranges from 9 km/h (5 mph) in November to 10 km/h (6 mph) in July. Daylight lasts from about 11.0 hours in June to 13.2 hours in December.
Best time to visit Toamasina
Based on these averages, the most comfortable months for sightseeing and outdoor activities are August–October. Average highs then reach 24 °C75 °F to 26 °C79 °F. Precipitation is 60 mm2.3 in to 80 mm3.2 in per month.
The most challenging month is January, which is very wet (309 mm12 in) and humid (84% relative humidity).
Comfort score: months are ranked by how close they come to an ideal. That means 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 Toamasina
- Wetter months (December–April) — highs 2781 to 29 °C84 °F, lows 2476 to 25 °C78 °F, about 252 mm9.9 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 (May–November) — highs 2475 to 27 °C81 °F, lows 2068 to 23 °C74 °F, about 99 mm3.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Toamasina compares
The nearest larger place is Antananarivo, about 214 km to the southwest. Compared with it, Toamasina is on average 7.2 °C13 °F warmer. It receives 18% less precipitation (1,952 mm77 in vs 2,383 mm94 in). The difference is largest in June (8.9 °C16.1 °F warmer).
World Climates covers 7 places in Madagascar. By annual mean temperature, Toamasina is the 4th warmest of them. By annual precipitation, it is the 2nd wettest. See all of them on the Madagascar climate page.
Some places in other countries have a very similar pattern of temperature and rainfall. The closest matches are Nukualofa (Tonga, Af), Avarua (Cook Islands, Af) and Suva (Fiji, Af).
Nearby places
- Climate in Antananarivo 214 km · 18 °C64 °F · 2,383 mm94 in
- Climate in Antsirabe 314 km · 17 °C62 °F · 1,910 mm75 in
- Climate in Mahajanga 425 km · 27 °C80 °F · 1,457 mm57 in
- Climate in Fianarantsoa 440 km · 18 °C65 °F · 1,774 mm70 in
- Climate in Antsiranana 649 km · 26 °C78 °F · 1,104 mm43 in
- Climate in Saint-Paul 692 km · 26 °C78 °F · 632 mm25 in
- Climate in Saint-Denis 703 km · 25 °C77 °F · 793 mm31 in
- Climate in Mamoudzou 746 km · 27 °C80 °F · 1,003 mm39 in
Frequently asked questions
What is the warmest month in Toamasina?
February is the warmest month in Toamasina. Its average high is 29 °C (84 °F) and its average low is 25 °C (78 °F).
What is the coldest month in Toamasina?
August is the coldest month. Its average high is 24 °C (75 °F) and its average low is 20 °C (68 °F).
When does it rain the most in Toamasina?
January is the wettest month with about 309 mm (12.1 in) of precipitation. September is the driest with about 60 mm (2.3 in).
What is the best time to visit Toamasina?
Judging by long-term averages, the most comfortable months are August–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. The gaps are largest 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 157 m, while Toamasina lies at about 12 m. Temperatures on this page were therefore adjusted by +0.9 °C1.7 °F using the standard lapse rate of 6.5 °C per 1,000 m.