Caucaia climate

Name: Caucaia
Address: BR

Caucaia is warmest in September, with average highs of 31 °C, and coldest in July, when nights average 24 °C. April is the wettest month (214 mm) and September the driest (2.8 mm). Figures are 1991–2020 climate normals.

Across a full year Caucaia averages 832 mm of rain and 365 days above 25 °C.

Brazil · population 378,406 · 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 September 31 °C
Coldest month July 24 °C
Driest month September 3 mm
Wettest month April 214 mm
Least cloud September 25 % cloud
Hottest on record October 34 °C
Coldest on record July 21 °C
Warmest sea April 29 °C

What to expectCaucaia through the year

Caucaia changes little through the year. Average daily highs stay between 30 and 31 °C, so no month stands out as a season in the way it would further from the equator.

Counted across a normal year, 365 days a year reach 25 °C, 159 of them reach 30 °C. The warmest reading in the 1991–2020 record is 34 °C, in October.

Rain is strongly seasonal. April averages 214 mm against 3 mm in September — 77 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Caucaia is warmest in April at 29 °C and coldest in August at 27 °C. Sea temperature lags the air by a month or two, which is why late summer swims warmer than early summer at the same air temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	29.4 °C	90 mm	65 %
February	29.0 °C	130 mm	70 %
March	28.7 °C	184 mm	73 %
April	28.6 °C	214 mm	74 %
May	29.1 °C	99 mm	57 %
June	29.0 °C	48 mm	42 %
July	29.5 °C	25 mm	35 %
August	30.5 °C	6 mm	25 %
September	30.7 °C	3 mm	25 %
October	30.7 °C	4 mm	35 %
November	30.6 °C	6 mm	45 %
December	30.3 °C	24 mm	51 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	29.4 °C	24.8 °C	26.7 °C	32.8 °C	22.3 °C	31	11
February	29.0 °C	24.6 °C	26.5 °C	32.7 °C	21.8 °C	28	6
March	28.7 °C	24.5 °C	26.3 °C	32.5 °C	21.9 °C	31	4
April	28.6 °C	24.4 °C	26.2 °C	32.5 °C	22.0 °C	30	3
May	29.1 °C	24.5 °C	26.4 °C	32.7 °C	21.8 °C	31	6
June	29.0 °C	24.2 °C	26.2 °C	32.5 °C	21.9 °C	30	6
July	29.5 °C	23.9 °C	26.2 °C	32.8 °C	20.8 °C	31	11
August	30.5 °C	24.1 °C	26.5 °C	33.8 °C	22.2 °C	31	22
September	30.7 °C	24.4 °C	26.8 °C	33.6 °C	23.1 °C	30	23
October	30.7 °C	24.8 °C	27.0 °C	34.0 °C	23.3 °C	31	24
November	30.6 °C	25.1 °C	27.2 °C	33.5 °C	23.5 °C	30	24
December	30.3 °C	25.2 °C	27.2 °C	33.1 °C	22.6 °C	31	19

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	90 mm	15	12 h/day	65 %	79 %	20 km/h	28.1 °C
February	130 mm	18	12 h/day	70 %	82 %	19 km/h	28.3 °C
March	184 mm	24	12 h/day	73 %	84 %	17 km/h	28.6 °C
April	214 mm	24	12 h/day	74 %	85 %	17 km/h	28.7 °C
May	99 mm	16	12 h/day	57 %	82 %	18 km/h	28.5 °C
June	48 mm	10	12 h/day	42 %	78 %	21 km/h	27.9 °C
July	25 mm	5	12 h/day	35 %	73 %	23 km/h	27.1 °C
August	6 mm	1	12 h/day	25 %	69 %	25 km/h	26.6 °C
September	3 mm	1	12 h/day	25 %	70 %	26 km/h	26.6 °C
October	4 mm	1	12 h/day	35 %	71 %	25 km/h	26.9 °C
November	6 mm	2	12 h/day	45 %	72 %	24 km/h	27.4 °C
December	24 mm	6	12 h/day	51 %	75 %	22 km/h	27.8 °C

How Caucaia compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Caucaia	31 °C	24 °C	832 mm	365
Fortaleza · Brazil	30 °C	24 °C	1,007 mm	365
Maracanaú · Brazil	32 °C	23 °C	901 mm	365
Sobral · Brazil	36 °C	23 °C	789 mm	365

Where Caucaia ranks

Ranking	Position	Value
The driest places in South America in November	23rd of 50	6.4 mm
The driest places in South America in October	31st of 50	4.3 mm
The driest places in South America in September	33rd of 50	2.8 mm
The warmest places in South America in November	36th of 50	31 °C
Best beach destinations in the world in November	40th of 50	94/100
Best beach destinations in the world year-round	42nd of 50	83/100

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

QuestionsCommon questions about Caucaia’s climate

When is the best time to visit Caucaia?

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

How hot does Caucaia get?

In September, the warmest month, daily highs average 31 °C. About 159 days a year pass 30 °C. The highest value in the 1991–2020 record is 34 °C.

How cold does it get in winter?

Nights average 24 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Caucaia?

April, averaging 214 mm over 24 days with rain. The driest month is September with 3 mm. The year as a whole averages 832 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 Caucaia 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: -3.736°, -38.653° (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.