Monthly Climate
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Best time to visit Toamasina

September is the best time to visit Toamasina for general sightseeing, with average highs of 24 °C and about 18 wet days. The comfortable season runs roughly May to November.

It depends what you are going for

One month rarely wins on everything. These are the best months on each measure taken on its own.

If you want Best month On that measure
Sightseeing and walking September comfort 74/100
A beach holiday November sea 26 °C
The least cloud September 53 % average cloud cover
The least rain September 82 mm
Warmth January 28 °C
Cooler weather July 22 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 September 74 24 °C 18 67
2 August 72 23 °C 21 64
3 July 72 22 °C 22 64
4 October 71 25 °C 17 72
5 June 70 23 °C 22 67
6 November 67 26 °C 16 74
7 May 64 25 °C 21 71
8 April 59 27 °C 22 72
9 December 55 28 °C 21 73
10 March 55 27 °C 26 71
11 January 53 28 °C 25 72
12 February 53 28 °C 24 71

For a beach holiday

November scores highest, with a sea temperature of 26 °C and air temperatures around 26 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 28 °C 28 °C 80 % 72
February 29 °C 28 °C 78 % 71
March 28 °C 27 °C 74 % 71
April 28 °C 27 °C 62 % 72
May 27 °C 25 °C 58 % 71
June 26 °C 23 °C 57 % 67
July 25 °C 22 °C 58 % 64
August 24 °C 23 °C 55 % 64
September 24 °C 24 °C 53 % 67
October 25 °C 25 °C 56 % 72
November 26 °C 26 °C 61 % 74
December 28 °C 28 °C 70 % 73

When to think twice

February scores lowest with about 24 wet days and highs near 28 °C. That does not make it a bad month — it depends entirely on what you are travelling for. The numbers are all here; the judgement is yours.

The full year

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 %

Data sources and method

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

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: comfort score, beach score, season boundaries. 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.