Monthly Climate
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Best time to visit Callao

November is the best time to visit Callao for general sightseeing, with average highs of 22 °C and about 0 wet days. The comfortable season runs roughly April to January. The sea stays above 20 °C from January to March.

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 November comfort 93/100
A beach holiday January sea 21 °C
The least cloud August 52 % average cloud cover
The least rain August 1 mm
Warmth February 26 °C
Cooler weather August 19 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days Beach
1 November 93 22 °C 0 66
2 October 92 21 °C 0 59
3 May 92 22 °C 0 71
4 June 91 20 °C 0 63
5 September 91 20 °C 0 56
6 December 91 24 °C 1 77
7 August 90 19 °C 0 55
8 July 90 20 °C 0 58
9 April 88 25 °C 2 82
10 January 85 26 °C 4 86
11 March 80 26 °C 6 84
12 February 78 26 °C 7 84

For a beach holiday

January scores highest, with a sea temperature of 21 °C and air temperatures around 26 °C. The sea is above 20 °C from January to March.

Month Sea Air Sunshine Beach score
January 21 °C 26 °C 86 % 86
February 22 °C 26 °C 89 % 84
March 21 °C 26 °C 87 % 84
April 20 °C 25 °C 72 % 82
May 19 °C 22 °C 58 % 71
June 18 °C 20 °C 57 % 63
July 18 °C 20 °C 54 % 58
August 17 °C 19 °C 52 % 55
September 17 °C 20 °C 59 % 56
October 17 °C 21 °C 70 % 59
November 18 °C 22 °C 76 % 66
December 19 °C 24 °C 83 % 77

When to think twice

February scores lowest with about 7 wet days and highs near 26 °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 25.5 °C 14 mm 86 %
February 26.5 °C 26 mm 89 %
March 26.4 °C 22 mm 87 %
April 24.5 °C 6 mm 72 %
May 22.2 °C 1 mm 58 %
June 20.4 °C 1 mm 57 %
July 19.5 °C 1 mm 54 %
August 19.4 °C 1 mm 52 %
September 19.9 °C 2 mm 59 %
October 20.7 °C 2 mm 70 %
November 21.8 °C 2 mm 76 %
December 23.6 °C 6 mm 83 %

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.