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

May 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
May, the last month of the autumn, in Saint-Denis, is also a moderately hot month, with average temperature fluctuating between 27.5°C (81.5°F) and 20.6°C (69.1°F).

Temperature

In May, the average high-temperature is relatively the same as in April - a still moderately hot 27.5°C (81.5°F). In May, in Saint-Denis, the average low-temperature is 20.6°C (69.1°F).

Rainfall

In Saint-Denis, during May, the rain falls for 9.6 days and regularly aggregates up to 97.6mm (3.8") of precipitation. Throughout the year, in Saint-Denis, there are 119.3 rainfall days, and 1658.6mm (65.3") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature in Saint-Denis is 26.7°C (80.1°F).
Note: For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In May, the average length of the day in Saint-Denis is 11.1h.

Sunshine

The average sunshine in Saint-Denis, Reunion, is 6.9h.

UV index

In May, the average daily maximum UV index is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 7 in May transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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. 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 May in Saint-Denis?

In Saint-Denis, in May, the average high-temperature is 27.5°C (81.5°F), and the average low-temperature is 20.6°C (69.1°F).

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

In Saint-Denis, Reunion, in May, during 9.6 rainfall days, 97.6mm (3.8") of precipitation is typically accumulated.

What is the sea water temperature in May in Saint-Denis?

In Saint-Denis, in May, the average water temperature is 26.7°C (80.1°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 Saint-Denis have in May?

In May, the average length of the day in Saint-Denis, Reunion, is 11.1h.

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

In Saint-Denis, Reunion, the average sunshine in May is 6.9h.

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

In Saint-Denis, the average daily maximum UV index in May is 7. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV rays.
Average temperature in May - Saint-Denis, Reunion
  • Average high temperature in May: 27.5°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 May: 20.6°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 May - Saint-Denis, Reunion
  • Average rainfall in May: 97.6mm

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 May - Saint-Denis, Reunion
  • Average rainfall days in May: 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 May - Saint-Denis, Reunion
  • Average sea temperature in May: 26.7°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 May / Average sunshine in May - Saint-Denis, Reunion
  • Average daylight in May: 11.1h

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 May: 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 May - Saint-Denis, Reunion
  • Average UV index in May: 7

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).