October weather forecast and climate
Rio de Janeiro, Brazil

Christ the Redeemer statue atop Mount Corcovado, overlooking the seaside city of Rio de Janeiro, Brazil
Christ the Redeemer statue atop Mount Corcovado, overlooking the seaside city of Rio de Janeiro, Brazil
October brings spring weather to Rio de Janeiro, as the city remains comfortable in the average zone of 20°C (68°F) to 26.1°C (79°F).
Spring sees an uptick in rainfall with around 86.4mm (3.4") during the month. The skies are partly clear, and it is common for clouds to appear sporadically and cast a few showers.
October is an ideal time for exploring Rio, mainly due to the mild weather, dwindling of crowds and festivities. The daylight lasts for 13 hours, which is a bonus to the sparsely crowded beaches.

What is the temperature in October in Rio de Janeiro?

The average high-temperature, in October, is 26°C (78.8°F), while the average low-temperature is 20.2°C (68.4°F).

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

In October, the rain falls for 9 days. Throughout October, 86.5mm (3.4") of precipitation is accumulated.

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

The average seawater temperature, in October, 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. The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).
Average temperature in October - Rio de Janeiro, Brazil
  • Average high temperature in October: 26°C

Warmest months (with the highest average high temperature) are January and February (30.2°C).
The month with the lowest average high temperature is July (25°C).

  • Average low temperature in October: 20.2°C

The month with the highest average low temperature is February (23.5°C).
The coldest month (with the lowest average low temperature) is July (18.4°C).

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

Months with the highest relative humidity are March, April, May, October and December (80%).
Months with the lowest relative humidity are July and August (77%).

Average rainfall in October - Rio de Janeiro, Brazil
  • Average rainfall in October: 86.5mm

The wettest month (with the highest rainfall) is January (137.1mm).
The driest month (with the lowest rainfall) is July (41.9mm).

Average rainfall days in October - Rio de Janeiro, Brazil
  • Average rainfall days in October: 9 days

Months with the highest number of rainy days are January and December (11 days).
The month with the lowest number of rainy days is July (4 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 shortest days is June (Average daylight: 10.7h).

  • Average sunshine in October: 4.9h

The month with most sunshine is February (Average sunshine: 7.2h).
Months with least sunshine are September and October (Average sunshine: 4.9).

Average UV index in October - Rio de Janeiro, Brazil
  • Average UV index in October: 11

Months with the highest UV index are January, February, March, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 5).

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