Monthly Climate
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Best time to visit Rio Branco

July is the best time to visit Rio Branco for general sightseeing, with average highs of 30 °C and about 4 wet days. The comfortable season runs roughly June 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 74/100
The least cloud July 37 % average cloud cover
The least rain July 23 mm
Warmth September 32 °C
Cooler weather May 28 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 July 74 30 °C 4
2 June 72 29 °C 7
3 August 67 32 °C 6
4 May 60 28 °C 15
5 September 56 32 °C 11
6 April 51 29 °C 23
7 February 49 29 °C 25
8 March 49 29 °C 27
9 January 49 29 °C 27
10 December 49 30 °C 26
11 November 48 30 °C 22
12 October 46 32 °C 19

When to think twice

October scores lowest with about 19 wet days and highs near 32 °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 29.4 °C 250 mm 90 %
February 29.2 °C 242 mm 91 %
March 29.2 °C 249 mm 90 %
April 29.0 °C 164 mm 85 %
May 28.5 °C 81 mm 71 %
June 28.9 °C 34 mm 53 %
July 30.4 °C 23 mm 37 %
August 32.1 °C 40 mm 40 %
September 32.4 °C 77 mm 58 %
October 31.5 °C 138 mm 76 %
November 30.1 °C 201 mm 85 %
December 29.5 °C 254 mm 88 %

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.