Monthly Climate
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Best time to visit Itaboraí

July is the best time to visit Itaboraí for general sightseeing, with average highs of 25 °C and about 7 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 89/100
The least cloud August 42 % average cloud cover
The least rain August 42 mm
Warmth February 31 °C
Cooler weather July 25 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 July 89 25 °C 7
2 June 88 25 °C 7
3 August 88 25 °C 7
4 May 82 25 °C 11
5 September 79 26 °C 11
6 October 72 27 °C 13
7 April 69 27 °C 14
8 November 62 27 °C 19
9 December 54 29 °C 21
10 March 53 29 °C 21
11 February 52 31 °C 18
12 January 50 30 °C 21

When to think twice

January 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 30.2 °C 250 mm 70 %
February 30.6 °C 199 mm 61 %
March 29.0 °C 221 mm 63 %
April 27.4 °C 108 mm 52 %
May 25.1 °C 80 mm 50 %
June 24.8 °C 44 mm 44 %
July 24.5 °C 45 mm 43 %
August 25.3 °C 42 mm 42 %
September 26.4 °C 82 mm 54 %
October 27.4 °C 107 mm 65 %
November 27.5 °C 208 mm 72 %
December 29.1 °C 245 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.