Ilhéus climate

Name: Ilhéus
Address: BR

Ilhéus is warmest in March, with average highs of 29 °C, and coldest in August, when nights average 20 °C. November is the wettest month (149 mm) and September the driest (70 mm). Figures are 1991–2020 climate normals.

Across a full year Ilhéus averages 1,277 mm of rain and 310 days above 25 °C.

Brazil · population 189,149 · 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 20 °C
Driest month September 70 mm
Wettest month November 149 mm
Least cloud September 51 % cloud
Hottest on record January 34 °C
Coldest on record July 16 °C
Warmest sea March 28 °C

What to expectIlhéus through the year

Ilhéus has a clear annual cycle: average daily highs run from 25 °C in August to 29 °C in March, a swing of 3.8 °C in mean temperature across the year.

Counted across a normal year, 310 days a year reach 25 °C, 19 of them reach 30 °C. The warmest reading in the 1991–2020 record is 34 °C, in January.

Rain is strongly seasonal. November averages 149 mm against 70 mm in September — 2.1 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Ilhéus is warmest in March at 28 °C and coldest in August at 25 °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	28.8 °C	105 mm	61 %
February	28.9 °C	91 mm	58 %
March	28.9 °C	121 mm	61 %
April	28.1 °C	134 mm	57 %
May	26.8 °C	117 mm	56 %
June	25.6 °C	102 mm	54 %
July	24.9 °C	99 mm	53 %
August	25.1 °C	75 mm	52 %
September	26.0 °C	70 mm	51 %
October	27.1 °C	96 mm	57 %
November	27.7 °C	149 mm	69 %
December	28.5 °C	119 mm	66 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	28.8 °C	23.7 °C	25.9 °C	34.4 °C	21.0 °C	31	4
February	28.9 °C	23.7 °C	26.0 °C	33.3 °C	21.0 °C	28	5
March	28.9 °C	23.7 °C	26.0 °C	32.8 °C	21.1 °C	31	4
April	28.1 °C	23.1 °C	25.3 °C	33.0 °C	20.6 °C	30	2
May	26.8 °C	22.0 °C	24.1 °C	31.4 °C	18.8 °C	28	0
June	25.6 °C	20.9 °C	22.9 °C	30.2 °C	17.5 °C	21	0
July	24.9 °C	20.1 °C	22.2 °C	28.7 °C	16.4 °C	14	0
August	25.1 °C	19.9 °C	22.3 °C	28.6 °C	16.9 °C	16	0
September	26.0 °C	21.0 °C	23.2 °C	30.6 °C	17.2 °C	24	0
October	27.1 °C	22.2 °C	24.3 °C	31.5 °C	17.5 °C	28	0
November	27.7 °C	22.9 °C	24.9 °C	31.8 °C	18.2 °C	28	1
December	28.5 °C	23.6 °C	25.7 °C	32.3 °C	20.8 °C	31	3

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	105 mm	20	13 h/day	61 %	83 %	16 km/h	27.6 °C
February	91 mm	19	13 h/day	58 %	84 %	15 km/h	28.1 °C
March	121 mm	22	12 h/day	61 %	85 %	14 km/h	28.4 °C
April	134 mm	22	12 h/day	57 %	86 %	15 km/h	28.2 °C
May	117 mm	19	11 h/day	56 %	86 %	16 km/h	27.3 °C
June	102 mm	19	11 h/day	54 %	87 %	16 km/h	26.4 °C
July	99 mm	20	11 h/day	53 %	86 %	16 km/h	25.7 °C
August	75 mm	18	12 h/day	52 %	84 %	16 km/h	25.3 °C
September	70 mm	15	12 h/day	51 %	82 %	17 km/h	25.4 °C
October	96 mm	17	12 h/day	57 %	83 %	17 km/h	26.0 °C
November	149 mm	19	13 h/day	69 %	84 %	17 km/h	26.5 °C
December	119 mm	18	13 h/day	66 %	83 %	17 km/h	27.1 °C

How Ilhéus 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
Ilhéus	29 °C	20 °C	1,277 mm	310
Itabuna · Brazil	29 °C	18 °C	1,051 mm	300
Porto Seguro · Brazil	29 °C	20 °C	1,077 mm	299
Vitória da Conquista · Brazil	28 °C	15 °C	669 mm	216
Salvador · Brazil	29 °C	22 °C	1,205 mm	304
Lauro de Freitas · Brazil	29 °C	22 °C	877 mm	323
Camaçari · Brazil	31 °C	21 °C	823 mm	339

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

QuestionsCommon questions about Ilhéus’s climate

When is the best time to visit Ilhéus?

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

How hot does Ilhéus get?

In March, the warmest month, daily highs average 29 °C. About 19 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 20 °C in August, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Ilhéus?

November, averaging 149 mm over 19 days with rain. The driest month is September with 70 mm. The year as a whole averages 1,277 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 Ilhéus 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: -14.799°, -39.032° (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.