Measurements:
°C
°F
Cabo Frio
74°F
N 4 mph
Feels like: 80°F
Precip: 60%
World Resorts Brazil Cabo Frio Weather September Weather in Cabo Frio

Cabo Frio Weather: September

Average Day Temperature: 80.0°F
Average Night Temperature: 70.4°F
Sea Water Temperature: 73.4°F
Number of Sunny Days: 15 days
Sunshine Hours: 11.7 - 12.3 hours
Number of Rainy Days: 1 day
Precipitation Totals: 0.7 in

Air Temperature in September, °F

Select Year: 2025 2024 2023

The highest day temperature in September 2025 was 85°F. The lowest night temperature was 65°F. The average values for day and night temperatures during September were 75.2°F и 69.9°F respectivly.

Cabo Frio Water Sea Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Cabo Frio was 73.0°F. The maximum and minimum values were 70.8°F and 74.8°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Cabo Frio is 0.7 in. It makes september one of the least rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 12.0 mph. It makes September the most windy month of the year for Cabo Frio.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Cabo Frio in September is 7.5 hours.

Best Time to Visit Cabo Frio
The most sunny months:
July 19 days
June 17 days
August 16 days
The most warm months:
March 85.7 °F
February 85.0 °F
January 84.6 °F
Warmest sea temperature:
March 81.0 °F
February 79.9 °F
April 79.9 °F
The most cold months:
July 77.2 °F
August 77.7 °F
June 78.3 °F
The most rainy months:
February 5 days
November 5 days
January 5 days
The most windy months:
September 12 mph
August 11 mph
October 10 mph

Cabo Frio on the Weather Map

Brazil Resorts:
NAME
Anchieta +72
Armacao dos Buzios +72
Buzios +72
Florianopolis +70
Fortaleza +84
Itajai +70
Jericoacoara +80
Recife +84
Rio de Janeiro +74
Rio Grande +70
Salvador +82
Santos +74
Sao Paulo +68
Unamar +74
Xangri-la +68
24 Hours Weather Forecast
Cabo Frio
Local time: 05:32
05 dec, friday
0600 74°F
N
4 mph
0900 78°F
NW
7 mph
1200 80°F
NW
9 mph
1500 78°F
NW
11 mph
1800 74°F
W
11 mph
2100 74°F
W
13 mph
06 dec, saturday
0000 74°F
SW
13 mph
0300 72°F
SW
13 mph