Monthly Climate
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Best time to visit Guarujá

July is the best time to visit Guarujá for general sightseeing, with average highs of 23 °C and about 10 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 85/100
A beach holiday April sea 26 °C
The least cloud July 50 % average cloud cover
The least rain August 93 mm
Warmth February 29 °C
Cooler weather July 23 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 July 85 23 °C 10 68
2 June 84 24 °C 10 74
3 August 83 23 °C 10 66
4 May 78 24 °C 13 74
5 September 75 24 °C 14 62
6 October 69 25 °C 16 67
7 April 68 27 °C 14 78
8 November 66 26 °C 16 71
9 December 57 27 °C 18 75
10 March 54 28 °C 19 74
11 February 54 29 °C 17 73
12 January 51 28 °C 21 74

For a beach holiday

April scores highest, with a sea temperature of 26 °C and air temperatures around 27 °C. The sea never reaches 20 °C here.

Month Sea Air Sunshine Beach score
January 27 °C 28 °C 73 % 74
February 27 °C 29 °C 67 % 73
March 27 °C 28 °C 63 % 74
April 26 °C 27 °C 55 % 78
May 24 °C 24 °C 54 % 74
June 22 °C 24 °C 51 % 74
July 21 °C 23 °C 50 % 68
August 21 °C 23 °C 51 % 66
September 21 °C 24 °C 63 % 62
October 22 °C 25 °C 71 % 67
November 23 °C 26 °C 69 % 71
December 25 °C 27 °C 70 % 75

When to think twice

January scores lowest with about 21 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 28.4 °C 229 mm 73 %
February 28.7 °C 202 mm 67 %
March 27.7 °C 222 mm 63 %
April 26.6 °C 130 mm 55 %
May 24.4 °C 124 mm 54 %
June 23.7 °C 97 mm 51 %
July 23.2 °C 115 mm 50 %
August 23.4 °C 93 mm 51 %
September 23.9 °C 140 mm 63 %
October 24.9 °C 156 mm 71 %
November 25.7 °C 173 mm 69 %
December 27.4 °C 180 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.