Monthly Climate
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Best time to visit São João de Meriti

July is the best time to visit São João de Meriti for general sightseeing, with average highs of 25 °C and about 7 wet days. The comfortable season runs roughly May to August.

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 87/100
The least cloud August 45 % average cloud cover
The least rain August 42 mm
Warmth February 32 °C
Cooler weather July 25 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 July 87 25 °C 7
2 June 86 26 °C 7
3 August 84 26 °C 7
4 May 79 26 °C 11
5 September 76 28 °C 11
6 October 67 29 °C 14
7 April 65 28 °C 14
8 November 58 29 °C 19
9 December 50 30 °C 21
10 March 49 30 °C 21
11 February 48 32 °C 18
12 January 46 31 °C 21

When to think twice

January scores lowest with about 21 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 31.2 °C 258 mm 72 %
February 31.7 °C 196 mm 64 %
March 30.1 °C 215 mm 65 %
April 28.4 °C 105 mm 55 %
May 26.1 °C 76 mm 53 %
June 25.7 °C 48 mm 47 %
July 25.5 °C 47 mm 45 %
August 26.5 °C 42 mm 45 %
September 27.5 °C 87 mm 57 %
October 28.6 °C 116 mm 67 %
November 28.5 °C 211 mm 74 %
December 30.2 °C 232 mm 72 %

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.