Teresina climate

Name: Teresina
Address: BR

Teresina is warmest in October, with average highs of 37 °C, and coldest in March, when nights average 23 °C. March is the wettest month (346 mm) and August the driest (2.4 mm). Figures are 1991–2020 climate normals.

Across a full year Teresina averages 1,455 mm of rain and 364 days above 25 °C.

Brazil · population 871,126 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month October 37 °C
Coldest month March 23 °C
Driest month August 2 mm
Wettest month March 346 mm
Least cloud August 34 % cloud
Hottest on record October 40 °C
Coldest on record June 19 °C

What to expectTeresina through the year

Teresina has a clear annual cycle: average daily highs run from 30 °C in March to 37 °C in October, a swing of 4.9 °C in mean temperature across the year.

Counted across a normal year, 364 days a year reach 25 °C, 296 of them reach 30 °C. The warmest reading in the 1991–2020 record is 40 °C, in October.

Rain is strongly seasonal. March averages 346 mm against 2 mm in August — 145 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

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 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	30.9 °C	23.2 °C	26.4 °C	38.8 °C	21.1 °C	31	20
February	30.2 °C	22.9 °C	25.9 °C	36.3 °C	21.0 °C	28	16
March	29.9 °C	22.9 °C	25.7 °C	38.3 °C	21.2 °C	31	16
April	29.9 °C	23.0 °C	25.9 °C	34.5 °C	21.3 °C	30	15
May	30.9 °C	23.1 °C	26.6 °C	36.5 °C	19.8 °C	31	22
June	32.6 °C	23.1 °C	27.6 °C	36.5 °C	19.0 °C	30	28
July	33.5 °C	23.2 °C	28.1 °C	36.8 °C	19.2 °C	31	31
August	35.0 °C	23.5 °C	29.1 °C	38.1 °C	19.3 °C	31	31
September	36.5 °C	24.1 °C	30.3 °C	39.3 °C	20.7 °C	30	30
October	36.8 °C	24.6 °C	30.6 °C	40.1 °C	21.2 °C	31	31
November	35.6 °C	24.7 °C	29.8 °C	40.0 °C	21.9 °C	30	29
December	33.7 °C	24.2 °C	28.5 °C	40.0 °C	21.6 °C	31	28

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	240 mm	22	12 h/day	78 %	81 %	9.7 km/h
February	281 mm	23	12 h/day	81 %	85 %	9.4 km/h
March	346 mm	27	12 h/day	82 %	87 %	9.0 km/h
April	272 mm	23	12 h/day	78 %	87 %	9.1 km/h
May	126 mm	13	12 h/day	63 %	80 %	11 km/h
June	17 mm	3	12 h/day	47 %	64 %	13 km/h
July	9 mm	1	12 h/day	41 %	53 %	14 km/h
August	2 mm	1	12 h/day	34 %	47 %	15 km/h
September	4 mm	1	12 h/day	34 %	46 %	14 km/h
October	16 mm	2	12 h/day	41 %	50 %	14 km/h
November	45 mm	6	12 h/day	58 %	58 %	12 km/h
December	96 mm	12	12 h/day	65 %	67 %	11 km/h

Where Teresina ranks

Ranking	Position	Value
The warmest places in South America in November	1st of 50	36 °C
The warmest places in South America in October	1st of 50	37 °C
The warmest places in South America in December	3rd of 50	34 °C
The warmest places in South America year-round	7th of 50	33 °C
The warmest places in the world in October	7th of 50	37 °C
The warmest places in the world in November	11th of 50	36 °C

Planning a trip? See the best time to visit Teresina.

QuestionsCommon questions about Teresina’s climate

When is the best time to visit Teresina?

That depends on what you want, so the honest answer is a comparison rather than a single month. February, March, April sit closest to 20 °C on average, October is the warmest month and August the driest. The month-by-month table above has the full picture.

How hot does Teresina get?

In October, the warmest month, daily highs average 37 °C. About 296 days a year pass 30 °C. The highest value in the 1991–2020 record is 40 °C.

How cold does it get in winter?

Nights average 23 °C in March, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Teresina?

March, averaging 346 mm over 27 days with rain. The driest month is August with 2 mm. The year as a whole averages 1,455 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Teresina rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: -5.089°, -42.802° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. 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.