Cabo Frio climate

Name: Cabo Frio
Address: BR

Cabo Frio is warmest in February, with average highs of 28 °C, and coldest in July, when nights average 19 °C. December is the wettest month (179 mm) and August the driest (40 mm). Figures are 1991–2020 climate normals.

Across a full year Cabo Frio averages 1,239 mm of rain and 203 days above 25 °C.

Brazil · population 238,438 · 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 February 28 °C
Coldest month July 19 °C
Driest month August 40 mm
Wettest month December 179 mm
Least cloud August 41 % cloud
Hottest on record March 37 °C
Coldest on record June 13 °C
Warmest sea March 25 °C

What to expectCabo Frio through the year

Cabo Frio has a clear annual cycle: average daily highs run from 23 °C in July to 28 °C in February, a swing of 4.5 °C in mean temperature across the year.

Counted across a normal year, 203 days a year reach 25 °C, 14 of them reach 30 °C. The warmest reading in the 1991–2020 record is 37 °C, in March.

Rain is strongly seasonal. December averages 179 mm against 40 mm in August — 4.5 times as much. Planning around the dry months matters more here than planning around temperature.

The sea off Cabo Frio is warmest in March at 25 °C and coldest in September at 21 °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	27.6 °C	169 mm	66 %
February	27.9 °C	117 mm	57 %
March	27.4 °C	159 mm	60 %
April	26.4 °C	83 mm	49 %
May	24.5 °C	81 mm	47 %
June	23.9 °C	43 mm	41 %
July	23.5 °C	44 mm	41 %
August	23.6 °C	40 mm	41 %
September	24.1 °C	73 mm	52 %
October	24.8 °C	89 mm	63 %
November	25.4 °C	162 mm	70 %
December	26.8 °C	179 mm	67 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C
January	27.6 °C	23.6 °C	25.3 °C	35.6 °C	19.4 °C	27	3
February	27.9 °C	23.9 °C	25.6 °C	36.8 °C	20.0 °C	27	3
March	27.4 °C	23.7 °C	25.3 °C	37.4 °C	19.5 °C	29	2
April	26.4 °C	22.6 °C	24.3 °C	35.5 °C	17.6 °C	23	1
May	24.5 °C	20.7 °C	22.5 °C	32.3 °C	14.4 °C	11	0
June	23.9 °C	19.8 °C	21.7 °C	32.1 °C	12.8 °C	8	0
July	23.5 °C	19.3 °C	21.1 °C	32.9 °C	12.8 °C	7	0
August	23.6 °C	19.4 °C	21.2 °C	31.4 °C	14.1 °C	8	0
September	24.1 °C	20.0 °C	21.7 °C	33.2 °C	15.1 °C	11	0
October	24.8 °C	21.0 °C	22.6 °C	32.9 °C	15.1 °C	14	1
November	25.4 °C	21.7 °C	23.3 °C	35.0 °C	15.3 °C	16	1
December	26.8 °C	23.0 °C	24.7 °C	33.4 °C	15.2 °C	24	2

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind	Sea temp
January	169 mm	14	13 h/day	66 %	84 %	19 km/h	24.0 °C
February	117 mm	11	13 h/day	57 %	84 %	19 km/h	24.4 °C
March	159 mm	16	12 h/day	60 %	84 %	17 km/h	25.1 °C
April	83 mm	12	12 h/day	49 %	81 %	17 km/h	24.9 °C
May	81 mm	11	11 h/day	47 %	80 %	17 km/h	23.7 °C
June	43 mm	7	11 h/day	41 %	80 %	17 km/h	22.8 °C
July	44 mm	7	11 h/day	41 %	79 %	19 km/h	22.0 °C
August	40 mm	7	11 h/day	41 %	78 %	21 km/h	21.5 °C
September	73 mm	10	12 h/day	52 %	79 %	23 km/h	21.3 °C
October	89 mm	11	13 h/day	63 %	80 %	22 km/h	21.8 °C
November	162 mm	15	13 h/day	70 %	82 %	21 km/h	22.6 °C
December	179 mm	16	14 h/day	67 %	84 %	19 km/h	23.8 °C

How Cabo Frio 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
Cabo Frio	28 °C	19 °C	1,239 mm	203
Rio das Ostras · Brazil	30 °C	18 °C	1,326 mm	251
Macaé · Brazil	30 °C	18 °C	1,170 mm	243
Nova Friburgo · Brazil	27 °C	13 °C	2,042 mm	157
Itaboraí · Brazil	31 °C	16 °C	1,630 mm	253
Magé · Brazil	31 °C	16 °C	1,588 mm	260
Niterói · Brazil	31 °C	17 °C	1,550 mm	268

Planning a trip? See the best time to visit Cabo Frio.

QuestionsCommon questions about Cabo Frio’s climate

When is the best time to visit Cabo Frio?

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, February is the warmest month and August the driest. The month-by-month table above has the full picture.

How hot does Cabo Frio get?

In February, the warmest month, daily highs average 28 °C. About 14 days a year pass 30 °C. The highest value in the 1991–2020 record is 37 °C.

How cold does it get in winter?

Nights average 19 °C in July, the coldest month. Freezing nights are not part of a normal year here.

Which month is wettest in Cabo Frio?

December, averaging 179 mm over 16 days with rain. The driest month is August with 40 mm. The year as a whole averages 1,239 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 Cabo Frio 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: -22.887°, -42.026° (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.