Monthly Climate
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Best time to visit Belém

September is the best time to visit Belém for general sightseeing, with average highs of 32 °C and about 7 wet days. The comfortable season runs roughly July 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 61/100
A beach holiday September sea 29 °C
The least cloud August 36 % average cloud cover
The least rain September 27 mm
Warmth October 32 °C
Cooler weather March 29 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 September 61 32 °C 7 78
2 October 60 32 °C 7 78
3 November 59 32 °C 8 77
4 August 59 31 °C 10 74
5 July 55 30 °C 15 66
6 February 50 29 °C 27 71
7 March 50 29 °C 30 71
8 April 50 29 °C 29 70
9 January 49 29 °C 27 70
10 December 48 31 °C 18 65
11 May 48 29 °C 27 68
12 June 48 30 °C 21 66

For a beach holiday

September scores highest, with a sea temperature of 29 °C and air temperatures around 32 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 29 °C 29 °C 81 % 70
February 28 °C 29 °C 86 % 71
March 28 °C 29 °C 88 % 71
April 29 °C 29 °C 88 % 70
May 29 °C 29 °C 75 % 68
June 29 °C 30 °C 53 % 66
July 29 °C 30 °C 44 % 66
August 29 °C 31 °C 36 % 74
September 29 °C 32 °C 38 % 78
October 29 °C 32 °C 46 % 78
November 29 °C 32 °C 59 % 77
December 29 °C 31 °C 68 % 65

When to think twice

June scores lowest with about 21 wet days and highs near 30 °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 29.2 °C 236 mm 81 %
February 28.6 °C 311 mm 86 %
March 28.6 °C 399 mm 88 %
April 28.7 °C 402 mm 88 %
May 29.2 °C 262 mm 75 %
June 29.5 °C 115 mm 53 %
July 29.9 °C 72 mm 44 %
August 31.0 °C 38 mm 36 %
September 31.7 °C 27 mm 38 %
October 32.1 °C 32 mm 46 %
November 31.8 °C 46 mm 59 %
December 30.8 °C 113 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.