May weather forecast
Saint-Denis, Reunion

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The glorious landscape of the Saint-Denis city, on Reunion Island
The glorious landscape of the Saint-Denis city, on Reunion Island

Weather in May

May ushers in noticeably cooler temperatures to the delight of those seeking moderate weather conditions. The coastal hub of Saint-Denis benefits from a lower UV index, presenting more safe hours in the day for tourists and locals to explore. Rainfall shares a similar fate as it dwindles down, mirroring the drying trend experienced in April. Despite cooler sea temperatures, water-related activities continue to flourish. The city exudes a refreshing ambiance imprinted by lower temperatures and falling precipitation levels.

Temperature

Saint-Denis's entry into May measures an average high-temperature of a still moderately hot 27.5°C (81.5°F), closely parallel to the preceding month. Saint-Denis, during the nights of May, experiences an average temperature drop to a pleasant 20.6°C (69.1°F).

Rainfall

In Saint-Denis, Reunion, in May, it is raining for 9.6 days, with typically 98mm (3.86") of accumulated precipitation. In Saint-Denis, during the entire year, the rain falls for 119.3 days and collects up to 1659mm (65.31") of precipitation.

Sea temperature

In May, the average sea temperature in Saint-Denis is 26.7°C (80.1°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is perceived as agreeably warm, making all water activities enjoyable without the risk of discomfort over lengthy durations.

Daylight

In Saint-Denis, the average length of the day in May is 11h and 8min.
On the first day of May, sunrise is at 06:35 and sunset at 17:55. On the last day of the month, sunrise is at 06:47 and sunset at 17:44 +04.

Sunshine

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

UV index

In Saint-Denis, the average daily maximum UV index in May is 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In May, the maximum UV index of 7 suggests this advice:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Stay cautious! Sand and water reflections increase UV radiation potency.
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Frequently asked questions

What is the average May temperature in Saint-Denis?

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

How many days does it rain in May in Saint-Denis?

In May, in Saint-Denis, Reunion, the rain falls for 9.6 days. Throughout May, 98mm (3.86") of precipitation is accumulated.

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

In Saint-Denis, Reunion, the average seawater temperature in May is 26.7°C (80.1°F). 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.

What is the average length of the day in May in Saint-Denis?

In May, the average day length in Saint-Denis, Reunion, is 11h and 8min.

When is the sunrise / sunset in May in Saint-Denis?

In May, on the first day of the month, sunrise is at 06:35 and sunset at 17:55. On the last day of the month, in Saint-Denis, sunrise is at 06:47 and sunset at 17:44 +04.

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

In Saint-Denis, Reunion, the average sunshine duration 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 estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in May
Saint-Denis, Reunion

Average temperature in May - Saint-Denis, Reunion
  • Average high temperature in May: 27.5°C

The 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).

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Average rainfall in May
Saint-Denis, Reunion

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 least rainfall) is October (43.4mm).

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Average rainfall days in May
Saint-Denis, Reunion

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 least rainy days is November (5.9 days).

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Average sea temperature in May
Saint-Denis, Reunion

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).
The coldest months (with the lowest average sea temperature) are August and September (23.8°C).

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Average daylight in May /
Average sunshine in May
Saint-Denis, Reunion

Average daylight in May / Average sunshine in May - Saint-Denis, Reunion
  • Average daylight in May: 11h and 1min

The month with the longest days is December (Average daylight: 13h and 24min).
The month with the shortest days is June (Average daylight: 10h and 54min).

  • Average sunshine in May: 6h and 5min

The months with the most sunshine are April and December (Average sunshine: 7h and 24min).
The months with the least sunshine are January and October (Average sunshine: 6h and 48min).

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Average UV index in May
Saint-Denis, Reunion

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

The months with the highest UV index are January, February, March, November and December (UV index 12).
The months with the lowest UV index are June and July (UV index 6).

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Saint-Denis, Reunion

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