Monthly Climate
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Best time to visit Porto Velho

July is the best time to visit Porto Velho for general sightseeing, with average highs of 31 °C and about 5 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 69/100
The least cloud July 36 % average cloud cover
The least rain July 23 mm
Warmth August 33 °C
Cooler weather May 29 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 July 69 31 °C 5
2 June 64 30 °C 9
3 August 61 33 °C 7
4 May 50 29 °C 21
5 April 48 29 °C 26
6 March 48 29 °C 29
7 February 48 29 °C 27
8 January 48 30 °C 29
9 September 47 32 °C 16
10 December 47 30 °C 28
11 November 45 30 °C 26
12 October 42 32 °C 22

When to think twice

October scores lowest with about 22 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 29.5 °C 315 mm 91 %
February 29.4 °C 319 mm 92 %
March 29.2 °C 336 mm 92 %
April 29.2 °C 242 mm 88 %
May 29.0 °C 142 mm 77 %
June 29.7 °C 46 mm 53 %
July 31.2 °C 23 mm 36 %
August 32.8 °C 43 mm 41 %
September 32.5 °C 102 mm 62 %
October 31.7 °C 176 mm 79 %
November 30.3 °C 255 mm 88 %
December 29.7 °C 303 mm 90 %

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.