Monthly Climate
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Best time to visit Mahajanga

July is the best time to visit Mahajanga for general sightseeing, with average highs of 30 °C and about 0 wet days. The comfortable season runs roughly May to September.

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 July comfort 76/100
A beach holiday July sea 26 °C
The least cloud September 18 % average cloud cover
The least rain June 1 mm
Warmth October 33 °C
Cooler weather January 30 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 July 76 30 °C 0 96
2 June 75 31 °C 0 95
3 August 73 31 °C 0 93
4 May 69 32 °C 1 88
5 September 68 33 °C 1 89
6 October 62 33 °C 4 82
7 April 60 32 °C 9 72
8 November 50 33 °C 14 61
9 January 48 30 °C 28 66
10 February 47 30 °C 24 66
11 March 45 31 °C 21 62
12 December 45 31 °C 24 62

For a beach holiday

July scores highest, with a sea temperature of 26 °C and air temperatures around 30 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 29 °C 30 °C 84 % 66
February 29 °C 30 °C 80 % 66
March 30 °C 31 °C 65 % 62
April 30 °C 32 °C 37 % 72
May 28 °C 32 °C 24 % 88
June 27 °C 31 °C 22 % 95
July 26 °C 30 °C 22 % 96
August 25 °C 31 °C 20 % 93
September 26 °C 33 °C 18 % 89
October 27 °C 33 °C 24 % 82
November 29 °C 33 °C 44 % 61
December 29 °C 31 °C 68 % 62

When to think twice

December scores lowest with about 24 wet days and highs near 31 °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 29.7 °C 419 mm 84 %
February 29.7 °C 315 mm 80 %
March 30.7 °C 210 mm 65 %
April 31.9 °C 45 mm 37 %
May 31.8 °C 8 mm 24 %
June 30.6 °C 1 mm 22 %
July 30.2 °C 2 mm 22 %
August 31.2 °C 1 mm 20 %
September 32.6 °C 3 mm 18 %
October 33.5 °C 19 mm 24 %
November 32.8 °C 92 mm 44 %
December 31.2 °C 225 mm 68 %

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.