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

July weather forecast and climate
Rio de Janeiro, Brazil

July, like June, in Rio de Janeiro, Brazil, is another warm winter month, with average temperature fluctuating between 18.7°C (65.7°F) and 24°C (75.2°F).

Temperature

With an average high-temperature of 24°C (75.2°F) and an average low-temperature of 18.7°C (65.7°F), July is the coldest month.

Humidity

In July, the average relative humidity in Rio de Janeiro is 78%.

Rainfall

In July, the rain falls for 9.3 days. Throughout July, 31mm (1.22") of precipitation is accumulated. Throughout the year, in Rio de Janeiro, Brazil, there are 192.5 rainfall days, and 812mm (31.97") of precipitation is accumulated.

Sea temperature

In July, the average sea temperature in Rio de Janeiro is 22.1°C (71.8°F).
Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 22.1°C (71.8°F).

Daylight

The average length of the day in July is 10.9h.

Sunshine

In Rio de Janeiro, the average sunshine in July is 8.1h.

UV index

In July, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays for the ordinary person.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the coldest month in Rio de Janeiro?

July is the coldest month, with an average high-temperature of 24°C (75.2°F) and an average low-temperature of 18.7°C (65.7°F).

What is the temperature in July in Rio de Janeiro?

In July, in Rio de Janeiro, the average high-temperature is 24°C (75.2°F), and the average low-temperature is 18.7°C (65.7°F).

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

In Rio de Janeiro, the average relative humidity in July is 78%.

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

In Rio de Janeiro, Brazil, during July, the rain falls for 9.3 days and regularly aggregates up to 31mm (1.22") of precipitation.

How warm is the water in July in Rio de Janeiro?

In July, the average sea temperature is 22.1°C (71.8°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 22.1°C (71.8°F) water may be enjoyable.

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

In Rio de Janeiro, the average length of the day in July is 10.9h.

How many hours of sunshine does Rio de Janeiro have in July?

The average sunshine in July is 8.1h.

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

In July, the average daily maximum UV index in Rio de Janeiro, Brazil, is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in July - Rio de Janeiro, Brazil
  • Average high temperature in July: 24°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 July: 18.7°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 July - Rio de Janeiro, Brazil
  • Average humidity in July: 78%

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

Average rainfall in July - Rio de Janeiro, Brazil
  • Average rainfall in July: 31mm

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

Average rainfall days in July - Rio de Janeiro, Brazil
  • Average rainfall days in July: 9.3 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 July - Rio de Janeiro, Brazil
  • Average sea temperature in July: 22.1°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 July / Average sunshine in July - Rio de Janeiro, Brazil
  • Average daylight in July: 10.9h

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 July: 8.1h

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 July - Rio de Janeiro, Brazil
  • Average UV index in July: 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).