Rio de Janeiro
Brazil
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Rio de Janeiro, Brazil

October, the same as September, is another warm spring month in Rio de Janeiro, Brazil, with average temperature ranging between min 20.6°C (69.1°F) and max 26.3°C (79.3°F).

Temperature

In Rio de Janeiro, Brazil, the average high-temperature is practically the same as in September - a still warm 26.3°C (79.3°F). In October, the average low-temperature is 20.6°C (69.1°F).

Humidity

In October, the average relative humidity is 80%.

Rainfall

In Rio de Janeiro, during October, the rain falls for 18.3 days and regularly aggregates up to 67mm (2.64") of precipitation. In Rio de Janeiro, during the entire year, the rain falls for 192.5 days and collects up to 812mm (31.97") of precipitation.

Sea temperature

In October, the average sea temperature is 22.7°C (72.9°F).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 22.7°C (72.9°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)

Daylight

In October, the average length of the day is 12.6h.

Sunshine

October has the least sunshine of the year, with an average of 7.5h of sunshine.

UV index

The average daily maximum UV index in Rio de Janeiro is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in October interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in October in Rio de Janeiro?

In October, the average high-temperature is 26.3°C (79.3°F), and the average low-temperature is 20.6°C (69.1°F).

What is the average humidity in October in Rio de Janeiro?

The average relative humidity in October in Rio de Janeiro is 80%.

How many days does it rain in October in Rio de Janeiro?

In October, in Rio de Janeiro, the rain falls for 18.3 days. Throughout October, 67mm (2.64") of precipitation is accumulated.

What is the sea temperature in October in Rio de Janeiro?

In October, the average sea temperature in Rio de Janeiro, Brazil, is 22.7°C (72.9°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 22.7°C (72.9°F) water may be enjoyable.

How many hours of daylight does Rio de Janeiro have in October?

In Rio de Janeiro, the average length of the day in October is 12.6h.

What is the month with the least sunshine in Rio de Janeiro?

The month with the least sunshine in Rio de Janeiro is October, with an average of 7.5h of sunshine.

How long on average sun shines in October in Rio de Janeiro?

The average sunshine in October in Rio de Janeiro, Brazil, is 7.5h.

How high is the UV index in October in Rio de Janeiro?

The average daily maximum UV index in October is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV rays.
Average temperature in October - Rio de Janeiro, Brazil
  • Average high temperature in October: 26.3°C

The warmest month (with the highest average high temperature) is February (29.7°C).
The month with the lowest average high temperature is July (24°C).

  • Average low temperature in October: 20.6°C

The month with the highest average low temperature is January (23.7°C).
The coldest month (with the lowest average low temperature) is August (18.5°C).

Average humidity in October - Rio de Janeiro, Brazil
  • Average humidity in October: 80%

The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is August (76%).

Average rainfall in October - Rio de Janeiro, Brazil
  • Average rainfall in October: 67mm

The wettest month (with the highest rainfall) is November (119mm).
The driest month (with the least rainfall) is June (29mm).

Average rainfall days in October - Rio de Janeiro, Brazil
  • Average rainfall days in October: 18.3 days

The month with the highest number of rainy days is March (22.7 days).
The month with the least rainy days is July (9.3 days).

Average sea temperature in October - Rio de Janeiro, Brazil
  • Average sea temperature in October: 22.7°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 (21.6°C).

Average daylight in October / Average sunshine in October - Rio de Janeiro, Brazil
  • Average daylight in October: 12.6h

The month with the longest days is December (Average daylight: 13.5h).
The month with the shortest days is June (Average daylight: 10.7h).

  • Average sunshine in October: 7.5h

The month with the most sunshine is February (Average sunshine: 8.8h).
The month with the least sunshine is October (Average sunshine: 7.5h).

Average UV index in October - Rio de Janeiro, Brazil
  • Average UV index in October: 6

The month with the highest UV index is January (UV index 7).
The month with the lowest UV index is September (UV index 5).