Monthly Climate
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Best time to visit Teresina

June is the best time to visit Teresina for general sightseeing, with average highs of 33 °C and about 3 wet days. The comfortable season runs roughly May 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 June comfort 67/100
The least cloud August 34 % average cloud cover
The least rain August 2 mm
Warmth October 37 °C
Cooler weather April 30 °C

Ranked by comfort

# Month Comfort / 100 Avg high Wet days
1 June 67 33 °C 3
2 July 65 34 °C 1
3 August 60 35 °C 1
4 May 57 31 °C 13
5 November 56 36 °C 6
6 September 55 36 °C 1
7 October 54 37 °C 2
8 December 52 34 °C 12
9 March 48 30 °C 27
10 April 48 30 °C 23
11 February 48 30 °C 23
12 January 46 31 °C 22

When to think twice

January scores lowest with about 22 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 30.9 °C 240 mm 78 %
February 30.2 °C 281 mm 81 %
March 29.9 °C 346 mm 82 %
April 29.9 °C 272 mm 78 %
May 30.9 °C 126 mm 63 %
June 32.6 °C 17 mm 47 %
July 33.5 °C 9 mm 41 %
August 35.0 °C 2 mm 34 %
September 36.5 °C 4 mm 34 %
October 36.8 °C 16 mm 41 %
November 35.6 °C 45 mm 58 %
December 33.7 °C 96 mm 65 %

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.