Monthly Climate
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Best time to visit Posadas

August is the best time to visit Posadas for general sightseeing, with average highs of 23 °C and about 8 wet days. The comfortable season runs roughly April 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 August comfort 90/100
The least cloud August 43 % average cloud cover
The least rain August 92 mm
Warmth January 31 °C
Cooler weather July 20 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 August 90 23 °C 8
2 May 89 22 °C 9
3 June 87 21 °C 9
4 July 86 20 °C 9
5 September 86 24 °C 10
6 April 81 26 °C 10
7 October 76 27 °C 12
8 November 74 28 °C 11
9 March 69 29 °C 11
10 December 64 30 °C 11
11 February 63 30 °C 12
12 January 59 31 °C 13

When to think twice

January scores lowest with about 13 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 31.0 °C 131 mm 48 %
February 30.1 °C 134 mm 48 %
March 29.0 °C 122 mm 45 %
April 26.1 °C 163 mm 46 %
May 22.1 °C 145 mm 52 %
June 20.5 °C 123 mm 54 %
July 20.1 °C 119 mm 48 %
August 22.5 °C 92 mm 43 %
September 24.3 °C 147 mm 46 %
October 26.6 °C 220 mm 53 %
November 28.2 °C 160 mm 46 %
December 30.2 °C 164 mm 48 %

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.