Aracaju climate

Name: Aracaju
Address: BR

Aracaju is warmest in March, with average highs of 29 °C, and coldest in August, when nights average 22 °C. May is the wettest month (144 mm) and December the driest (28 mm). Figures are 1991–2020 climate normals.

Across a full year Aracaju averages 944 mm of rain and 337 days above 25 °C.

Brazil · population 664,908 · 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 March 29 °C
Coldest month August 22 °C
Driest month December 28 mm
Wettest month May 144 mm
Least cloud September 43 % cloud
Hottest on record March 35 °C
Coldest on record August 19 °C
Warmest sea April 28 °C

What to expectAracaju through the year

Aracaju has a clear annual cycle: average daily highs run from 25 °C in August to 29 °C in March, a swing of 3.3 °C in mean temperature across the year.

Counted across a normal year, 337 days a year reach 25 °C, 35 of them reach 30 °C. The warmest reading in the 1991–2020 record is 35 °C, in March.

Rain is strongly seasonal. May averages 144 mm against 28 mm in December — 5.1 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Aracaju is warmest in April at 28 °C and coldest in August at 26 °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	29.2 °C	50 mm	53 %
February	29.3 °C	57 mm	54 %
March	29.4 °C	68 mm	51 %
April	28.6 °C	108 mm	53 %
May	27.4 °C	144 mm	54 %
June	26.2 °C	138 mm	51 %
July	25.5 °C	119 mm	52 %
August	25.4 °C	87 mm	49 %
September	26.2 °C	60 mm	43 %
October	27.4 °C	50 mm	44 %
November	28.4 °C	37 mm	50 %
December	29.2 °C	28 mm	52 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	29.2 °C	24.6 °C	26.6 °C	33.4 °C	22.1 °C	31	7
February	29.3 °C	24.8 °C	26.7 °C	33.0 °C	22.4 °C	28	7
March	29.4 °C	24.8 °C	26.8 °C	34.5 °C	23.0 °C	31	8
April	28.6 °C	24.5 °C	26.4 °C	33.6 °C	22.0 °C	30	3
May	27.4 °C	23.8 °C	25.5 °C	31.5 °C	21.1 °C	31	0
June	26.2 °C	23.0 °C	24.5 °C	29.9 °C	20.5 °C	26	0
July	25.5 °C	22.3 °C	23.7 °C	28.6 °C	19.1 °C	21	0
August	25.4 °C	22.0 °C	23.6 °C	28.1 °C	18.6 °C	21	0
September	26.2 °C	22.6 °C	24.2 °C	29.2 °C	19.8 °C	27	0
October	27.4 °C	23.4 °C	25.1 °C	32.1 °C	21.1 °C	30	1
November	28.4 °C	24.0 °C	25.8 °C	32.8 °C	21.6 °C	30	3
December	29.2 °C	24.5 °C	26.4 °C	33.8 °C	22.5 °C	31	6

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	50 mm	13	13 h/day	53 %	76 %	21 km/h	27.4 °C
February	57 mm	14	12 h/day	54 %	77 %	20 km/h	27.9 °C
March	68 mm	16	12 h/day	51 %	78 %	19 km/h	28.2 °C
April	108 mm	19	12 h/day	53 %	80 %	18 km/h	28.4 °C
May	144 mm	22	12 h/day	54 %	82 %	18 km/h	27.8 °C
June	138 mm	23	11 h/day	51 %	82 %	19 km/h	26.7 °C
July	119 mm	23	12 h/day	52 %	80 %	19 km/h	25.9 °C
August	87 mm	21	12 h/day	49 %	79 %	20 km/h	25.6 °C
September	60 mm	16	12 h/day	43 %	78 %	20 km/h	25.8 °C
October	50 mm	12	12 h/day	44 %	77 %	21 km/h	26.1 °C
November	37 mm	9	13 h/day	50 %	77 %	22 km/h	26.3 °C
December	28 mm	8	13 h/day	52 %	76 %	21 km/h	26.7 °C

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

QuestionsCommon questions about Aracaju’s climate

When is the best time to visit Aracaju?

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

How hot does Aracaju get?

In March, the warmest month, daily highs average 29 °C. About 35 days a year pass 30 °C. The highest value in the 1991–2020 record is 35 °C.

How cold does it get in winter?

Nights average 22 °C in August, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Aracaju?

May, averaging 144 mm over 22 days with rain. The driest month is December with 28 mm. The year as a whole averages 944 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 Aracaju 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
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.