Toamasina climate

Name: Toamasina
Address: MG

Toamasina is warmest in January, with average highs of 28 °C, and coldest in August, when nights average 19 °C. January is the wettest month (327 mm) and September the driest (82 mm). Figures are 1991–2020 climate normals.

Across a full year Toamasina averages 2,172 mm of rain and 209 days above 25 °C.

Madagascar · population 345,107 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month January 28 °C
Coldest month August 19 °C
Driest month September 82 mm
Wettest month January 327 mm
Least cloud September 53 % cloud
Hottest on record March 35 °C
Coldest on record August 15 °C
Warmest sea February 29 °C

What to expectToamasina through the year

Toamasina has a clear annual cycle: average daily highs run from 23 °C in August to 28 °C in January, a swing of 5.2 °C in mean temperature across the year.

Counted across a normal year, 209 days a year reach 25 °C, 6 of them reach 30 °C. The warmest reading in the 1991–2020 record is 35 °C, in March.

Rain is strongly seasonal. January averages 327 mm against 82 mm in September — 4.0 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Toamasina is warmest in February at 29 °C and coldest in August at 24 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	28.0 °C	327 mm	80 %
February	28.0 °C	322 mm	78 %
March	27.4 °C	318 mm	74 %
April	26.5 °C	166 mm	62 %
May	25.1 °C	158 mm	58 %
June	23.4 °C	141 mm	57 %
July	22.5 °C	160 mm	58 %
August	22.8 °C	114 mm	55 %
September	23.6 °C	82 mm	53 %
October	25.1 °C	90 mm	56 %
November	26.4 °C	85 mm	61 %
December	27.6 °C	209 mm	70 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	28.0 °C	23.7 °C	25.7 °C	34.3 °C	20.7 °C	30	2
February	28.0 °C	23.8 °C	25.7 °C	34.5 °C	21.0 °C	27	2
March	27.4 °C	23.5 °C	25.3 °C	34.6 °C	21.2 °C	30	1
April	26.5 °C	22.7 °C	24.5 °C	30.3 °C	20.2 °C	27	0
May	25.1 °C	21.4 °C	23.1 °C	28.7 °C	17.4 °C	16	0
June	23.4 °C	19.8 °C	21.5 °C	27.2 °C	17.0 °C	2	0
July	22.5 °C	18.7 °C	20.5 °C	26.2 °C	15.4 °C	0	0
August	22.8 °C	18.7 °C	20.7 °C	26.6 °C	14.8 °C	0	0
September	23.6 °C	19.2 °C	21.4 °C	27.1 °C	16.3 °C	3	0
October	25.1 °C	20.7 °C	22.9 °C	28.9 °C	17.0 °C	15	0
November	26.4 °C	22.0 °C	24.2 °C	34.0 °C	17.6 °C	26	0
December	27.6 °C	23.2 °C	25.3 °C	33.2 °C	19.9 °C	30	1

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	327 mm	25	13 h/day	80 %	86 %	14 km/h	28.3 °C
February	322 mm	24	13 h/day	78 %	86 %	14 km/h	28.5 °C
March	318 mm	26	12 h/day	74 %	86 %	13 km/h	28.4 °C
April	166 mm	22	12 h/day	62 %	85 %	13 km/h	28.0 °C
May	158 mm	21	11 h/day	58 %	85 %	13 km/h	27.1 °C
June	141 mm	22	11 h/day	57 %	83 %	13 km/h	25.8 °C
July	160 mm	22	11 h/day	58 %	83 %	14 km/h	24.6 °C
August	114 mm	21	12 h/day	55 %	81 %	13 km/h	24.1 °C
September	82 mm	18	12 h/day	53 %	81 %	13 km/h	24.3 °C
October	90 mm	17	13 h/day	56 %	80 %	13 km/h	25.2 °C
November	85 mm	16	13 h/day	61 %	81 %	14 km/h	26.4 °C
December	209 mm	21	13 h/day	70 %	84 %	13 km/h	27.7 °C

Where Toamasina ranks

Ranking	Position	Value
Warmest sea temperatures in Africa in January	16thof 50	28 °C
Warmest sea temperatures in Africa in February	17thof 50	29 °C
Warmest sea temperatures in Africa in March	28thof 50	28 °C
Best beach destinations in Africa in March	38thof 50	71/100
Warmest sea temperatures in Africa in April	40thof 50	28 °C
Warmest sea temperatures in Africa in December	42ndof 50	28 °C

Planning a trip? See the best time to visit Toamasina.

QuestionsCommon questions about Toamasina’s climate

When is the best time to visit Toamasina?

That depends on what you want, so the honest answer is a comparison rather than a single month. July, August, September sit closest to 20 °C on average, January is the warmest month and September the driest. The month-by-month table above has the full picture.

How hot does Toamasina get?

In January, the warmest month, daily highs average 28 °C. About 6 days a year pass 30 °C. The highest value in the 1991–2020 record is 35 °C.

How cold does it get in winter?

Nights average 19 °C in August, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Toamasina?

January, averaging 327 mm over 25 days with rain. The driest month is September with 82 mm. The year as a whole averages 2,172 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Toamasina rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.