Toamasina weather by month & the best time to visit
Madagascar · beach resort · tropical rainforest climate

The best time to visit Toamasina is September — its sunniest month (Sunshine Score 83/100), with October and August close behind. Toamasina averages about 2,588 hours of sunshine a year. Daytime highs around 25°C / 77°F and roughly 60 mm of rain in September.
When is the best time to visit Toamasina?
For sunshine, the best time to visit Toamasina is September, then October and August. The dullest month is January (67/100, 308 mm of rain). The full month-by-month picture is in the table below.
How sunny is Toamasina?
Toamasina gets a lot of sun: around 2,588 hours a year. September (83/100) is noticeably better than January (67). It ranks #14 of 16 destinations in Madagascar for annual sunshine, below the national median of 3,157 hours. Rain has a clear season: the wettest stretch, around February, carries about 45% of the annual 1,951 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 67 | 29° / 84°F | 25° / 77°F | 308 mm | 12 | 29° / 84°F |
| February | 67 | 29° / 84°F | 25° / 77°F | 264 mm | 12 | 29° / 84°F |
| March | 67 | 28° / 82°F | 25° / 77°F | 306 mm | 11 | 29° / 84°F |
| April | 67 | 27° / 81°F | 24° / 75°F | 179 mm | 9 | 28° / 82°F |
| May | 69 | 26° / 79°F | 23° / 73°F | 138 mm | 7 | 27° / 81°F |
| June | 71 | 25° / 77°F | 22° / 72°F | 125 mm | 6 | 26° / 79°F |
| July | 71 | 24° / 75°F | 21° / 70°F | 125 mm | 6 | 25° / 77°F |
| August | 79 | 24° / 75°F | 20° / 68°F | 80 mm | 7 | 25° / 77°F |
| September | 83 | 25° / 77°F | 21° / 70°F | 60 mm | 9 | 26° / 79°F |
| October | 81 | 26° / 79°F | 22° / 72°F | 69 mm | 10 | 26° / 79°F |
| November | 77 | 27° / 81°F | 23° / 73°F | 96 mm | 11 | 28° / 82°F |
| December | 67 | 29° / 84°F | 25° / 77°F | 201 mm | 12 | 29° / 84°F |
Sea temperature in Toamasina by month
The sea off Toamasina is warmest in January at around 29°C / 84°F, and coolest in July at 25°C / 77°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Toamasina: questions and answers
What kind of destination is Toamasina?
Toamasina is a beach resort in Madagascar with a tropical rainforest climate — the sea reaches 29°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Toamasina get a year?
Toamasina gets about 2,588 hours of sunshine a year, at its best around September.
When is the best time to visit Toamasina?
The sunniest time to visit Toamasina is September, when the Sunshine Score peaks at 83/100 (with October and August close behind). Expect daytime highs around 25°C / 77°F.
What is the least sunny month in Toamasina?
January is the least sunny month in Toamasina, scoring 67/100 with about 308 mm of rain.
What is the sea temperature in Toamasina?
The sea in Toamasina ranges from about 25°C (July) to 29°C (January). Month-by-month sea temperatures are on this page.
How strong is the sun in Toamasina?
The typical midday UV index in Toamasina peaks around 12 (extreme) in January, easing to about 6 (high) in June. Month-by-month midday UV values are in the UV column of the table on this page.
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