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

July 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
July, the same as June, is a moderately hot winter month in Saint-Denis, Reunion, with average temperature fluctuating between 25.2°C (77.4°F) and 18.1°C (64.6°F).

Temperature

With an average high-temperature of 25.2°C (77.4°F) and an average low-temperature of 18.1°C (64.6°F), July is the coldest month.

Rainfall

In July, the rain falls for 8.8 days. Throughout July, 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

In July, the average sea temperature in Saint-Denis, Reunion, is 24.4°C (75.9°F).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24.4°C (75.9°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)

Daylight

In Saint-Denis, the average length of the day in July is 11h.

Sunshine

In Saint-Denis, the average sunshine in July is 7.1h.

UV index

Months with the lowest UV index are June and July, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 6 in July interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. 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 strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the coldest month in Saint-Denis?

July is the coldest month, with an average high-temperature of 25.2°C (77.4°F) and an average low-temperature of 18.1°C (64.6°F).

What is the temperature in July in Saint-Denis?

In Saint-Denis, in July, the average high-temperature is 25.2°C (77.4°F), and the average low-temperature is 18.1°C (64.6°F).

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

In Saint-Denis, Reunion, in July, it is raining for 8.8 days, with typically 57.8mm (2.3") of accumulated precipitation.

What is the sea temperature in July in Saint-Denis?

In Saint-Denis, the average seawater temperature in July is 24.4°C (75.9°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 24.4°C (75.9°F).

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

In July, the average length of the day in Saint-Denis is 11h.

How long on average sun shines in July in Saint-Denis?

The average sunshine in July in Saint-Denis is 7.1h.

What is the month with the lowest UV index in Saint-Denis?

Months with the lowest UV index in Saint-Denis are June and July, with an average maximum UV index of 6.

What is the UV index reading in July in Saint-Denis?

In Saint-Denis, Reunion, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV rays.
Average temperature in July - Saint-Denis, Reunion
  • Average high temperature in July: 25.2°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 July: 18.1°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 July - Saint-Denis, Reunion
  • Average rainfall in July: 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 July - Saint-Denis, Reunion
  • Average rainfall days in July: 8.8 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 July - Saint-Denis, Reunion
  • Average sea temperature in July: 24.4°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 July / Average sunshine in July - Saint-Denis, Reunion
  • Average daylight in July: 11h

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 July: 7.1h

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 July - Saint-Denis, Reunion
  • Average UV index in July: 6

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).