Saint-Denis
Reunion
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Saint-Denis, Reunion

An aerial panoramic shot of the glorious landscape of the Saint-Denis city, on Reunion Island
An aerial panoramic shot of the glorious landscape of the Saint-Denis city, on Reunion Island
August, the last month of the winter, in Saint-Denis, is another warm month, with temperature in the range of an average high of 25.3°C (77.5°F) and an average low of 18°C (64.4°F).

Temperature

In Saint-Denis, the average high-temperature in August is relatively the same as in July - a still warm 25.3°C (77.5°F). The average low-temperature, in Saint-Denis, is 18°C (64.4°F).

Rainfall

In August, in Saint-Denis, the rain falls for 9.6 days. Throughout August, 57.8mm (2.3") of precipitation is accumulated. In Saint-Denis, during the entire year, the rain falls for 119.3 days and collects up to 1658.6mm (65.3") of precipitation.

Sea temperature

Months with the coldest seawater are August and September, with an average sea temperature of 23.8°C (74.8°F).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 23.8°C (74.8°F) water. (FYI: The Olympic swimming competition requires a water temperature between 25°C (77°F) and 28°C (82.4°F).)

Daylight

In August, the average length of the day in Saint-Denis is 11.4h.

Sunshine

The average sunshine in Saint-Denis is 6.9h.

UV index

The average daily maximum UV index in Saint-Denis is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 8 in August interpret into the following advice:
Take special precautions, as unprotected skin can be damaged and can burn quickly. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the temperature in August in Saint-Denis?

In Saint-Denis, Reunion, in August, the average high-temperature is 25.3°C (77.5°F), and the average low-temperature is 18°C (64.4°F).

How much does it rain in Saint-Denis in August?

In Saint-Denis, in August, it is raining for 9.6 days, with typically 57.8mm (2.3") of accumulated precipitation.

When is the sea coldest in Saint-Denis?

August and September, with an average sea temperature of 23.8°C (74.8°F), are months with the coldest seawater in Saint-Denis.

What is the water temperature in August in Saint-Denis?

In Saint-Denis, Reunion, the average seawater temperature in August is 23.8°C (74.8°F). 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 23.8°C (74.8°F).

How many hours of daylight does Saint-Denis have in August?

The average length of the day in August in Saint-Denis, Reunion, is 11.4h.

How many hours of sunshine does Saint-Denis have in August?

In August, the average sunshine is 6.9h.

What is the UV index intensity in August in Saint-Denis?

In August, the average daily maximum UV index is 8. A UV Index of 8 to 10 symbolizes a very high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in August - Saint-Denis, Reunion
  • Average high temperature in August: 25.3°C

Warmest months (with the highest average high temperature) are January and February (30.1°C).
The month with the lowest average high temperature is July (25.2°C).

  • Average low temperature in August: 18°C

The month with the highest average low temperature is February (23.7°C).
The coldest month (with the lowest average low temperature) is August (18°C).

Average rainfall in August - Saint-Denis, Reunion
  • Average rainfall in August: 57.8mm

The wettest month (with the highest rainfall) is February (351mm).
The driest month (with the lowest rainfall) is October (43.4mm).

Average rainfall days in August - Saint-Denis, Reunion
  • Average rainfall days in August: 9.6 days

The month with the highest number of rainy days is February (14.3 days).
The month with the lowest number of rainy days is November (5.9 days).

Average sea temperature in August - Saint-Denis, Reunion
  • Average sea temperature in August: 23.8°C

The best month for swimming (with the highest average sea temperature) is March (28.5°C).
Coldest months (with the lowest average sea temperature) are August and September (23.8°C).

Average daylight in August / Average sunshine in August - Saint-Denis, Reunion
  • Average daylight in August: 11.4h

The month with the longest days is December (Average daylight: 13.4h).
The month with shortest days is June (Average daylight: 10.9h).

  • Average sunshine in August: 6.9h

Months with most sunshine are April and December (Average sunshine: 7.4h).
Months with least sunshine are January and October (Average sunshine: 6.8).

Average UV index in August - Saint-Denis, Reunion
  • Average UV index in August: 8

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 6).