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

April weather forecast and climate
Rio de Janeiro, Brazil

April, like March, in Rio de Janeiro, Brazil, is another warm autumn month, with average temperature fluctuating between 21.5°C (70.7°F) and 26.8°C (80.2°F).

Temperature

In Rio de Janeiro, the average high-temperature is relatively the same as in March - a still moderately hot 26.8°C (80.2°F). In Rio de Janeiro, the average low-temperature is 21.5°C (70.7°F).

Humidity

In Rio de Janeiro, Brazil, the average relative humidity is 81%.

Rainfall

In Rio de Janeiro, Brazil, in April, it is raining for 16.7 days, with typically 52mm (2.05") of accumulated precipitation. Throughout the year, in Rio de Janeiro, there are 192.5 rainfall days, and 812mm (31.97") of precipitation is accumulated.

Sea temperature

In April, the average sea temperature is 25.4°C (77.7°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

In April, the average length of the day in Rio de Janeiro is 11.6h.

Sunshine

The average sunshine is 8.2h.

UV index

In April, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in April in Rio de Janeiro?

In Rio de Janeiro, in April, the average high-temperature is 26.8°C (80.2°F), and the average low-temperature is 21.5°C (70.7°F).

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

In Rio de Janeiro, the average relative humidity in April is 81%.

How much does it rain in Rio de Janeiro in April?

In Rio de Janeiro, in April, it is raining for 16.7 days, with typically 52mm (2.05") of accumulated precipitation.

What is the sea water temperature in April in Rio de Janeiro?

In Rio de Janeiro, the average seawater temperature in April is 25.4°C (77.7°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

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

The average length of the day in April is 11.6h.

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

The average sunshine in April is 8.2h.

What is the UV index reading in April in Rio de Janeiro?

The average daily maximum UV index in April in Rio de Janeiro, Brazil, is 6. A UV Index reading of 6 to 7 represents a high health threat from the exposure to the Sun's UV rays.
Average temperature in April - Rio de Janeiro, Brazil
  • Average high temperature in April: 26.8°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 April: 21.5°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 April - Rio de Janeiro, Brazil
  • Average humidity in April: 81%

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

Average rainfall in April - Rio de Janeiro, Brazil
  • Average rainfall in April: 52mm

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

Average rainfall days in April - Rio de Janeiro, Brazil
  • Average rainfall days in April: 16.7 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 April - Rio de Janeiro, Brazil
  • Average sea temperature in April: 25.4°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 April / Average sunshine in April - Rio de Janeiro, Brazil
  • Average daylight in April: 11.6h

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 April: 8.2h

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