Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average sea temperature in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
As August turns into September in Cabo Frio, the average high-temperatures rest at a still warm 23.5°C (74.3°F), showing a minor variation from the prior month. Cabo Frio documents a consistent average low-temperature of 20.8°C (69.4°F) at night during September.Humidity
In September, the average relative humidity is 80%.Rainfall
In Cabo Frio, in September, during 12.1 rainfall days, 39mm (1.54") of precipitation is typically accumulated. Throughout the year, there are 173.2 rainfall days, and 733mm (28.86") of precipitation is accumulated.Sea temperature
The month with the coldest seawater is September, with an average sea temperature of 21.8°C (71.2°F).Note: In 21.8°C (71.2°F), swimming is not an enjoyable activity for most. The challenge of managing one's breathing increases as the temperature goes under 21°C (69.8°F).
Daylight
In September, the average length of the day is 11h and 58min.On the first day of September in Cabo Frio, sunrise is at 05:57 and sunset at 17:38. On the last day of the month, sunrise is at 05:28 and sunset at 17:46 -03.
Sunshine
The average sunshine in September in Cabo Frio is 8.1h.UV index
March through December, with an average maximum UV index of 6, are months with the lowest UV index in Cabo Frio, Brazil. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 6 during September translates into the following guidance:
Shun overexposure. Protection from sun ravages is indispensable. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be alert! The reflection of water and sand augments UV radiation intensity.
Frequently asked questions
What are September temperatures in Cabo Frio?
What is the average humidity in September in Cabo Frio?
How many days does it rain in September in Cabo Frio?
What month is the sea coldest in Cabo Frio?
What is the sea water temperature in September in Cabo Frio?
How many hours of daylight does Cabo Frio have in September?
What time are sunrise and sunset in September in Cabo Frio?
How long on average sun shines in September in Cabo Frio?
What are the months with the lowest UV index in Cabo Frio?
How high is the UV index in September in Cabo Frio?
Average temperature in September
Cabo Frio, Brazil
- Average high temperature in September: 23.5°C
The warmest month (with the highest average high temperature) is February (27.8°C).
The month with the lowest average high temperature is August (23.2°C).
- Average low temperature in September: 20.8°C
The month with the highest average low temperature is February (24.6°C).
The coldest month (with the lowest average low temperature) is August (19.8°C).
Average pressure in September
Cabo Frio, Brazil
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is July (1020.5mbar).
The month with the lowest atmospheric pressure is December (1011.8mbar).
Average wind speed in September
Cabo Frio, Brazil
- Average wind speed in September: 22.8km/h
The windiest month (with the highest average wind speed) is September (22.8km/h).
The calmest month (with the lowest average wind speed) is March (15.2km/h).
Average humidity in September
Cabo Frio, Brazil
- Average humidity in September: 80%
The month with the highest relative humidity is December (84%).
The months with the lowest relative humidity are May, July and August (78%).
Average rainfall in September
Cabo Frio, Brazil
- Average rainfall in September: 39mm
The wettest month (with the highest rainfall) is November (115mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days in September
Cabo Frio, Brazil
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is March (18.9 days).
The month with the least rainy days is July (10.2 days).
Average sea temperature in September
Cabo Frio, Brazil
- Average sea temperature in September: 21.8°C
The best month for swimming (with the highest average sea temperature) is March (25.8°C).
The coldest month (with the lowest average sea temperature) is September (21.8°C).
Average daylight in September /
Average sunshine in September
Cabo Frio, Brazil
- Average daylight in September: 12h and 0min
The month with the longest days is December (Average daylight: 13h and 30min).
The month with the shortest days is June (Average daylight: 10h and 48min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is February (Average sunshine: 9h and 6min).
The month with the least sunshine is October (Average sunshine: 7h and 42min).
Average sunshine days in September
Cabo Frio, Brazil
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is July (18.5 days).
The month with the least sunshine days is November (8.4 days).
Average UV index in September
Cabo Frio, Brazil
- Average UV index in September: 6
The months with the highest UV index are January and February (UV index 7).
The months with the lowest UV index are March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in September
Cabo Frio, Brazil
- Average cloud cover in September: 34
The month with the most cloud cover is November (Cloud cover 46).
The month with the least cloud cover is February (Cloud cover 26).
Average visibility in September
Cabo Frio, Brazil
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Cabo Frio, Brazil
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