May weather forecast
Cilaos, Reunion

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Weather in May

In May, there's a noticeable downturn in temperatures and rainfall, reaching a low of 66mm (2.6") from 117mm (4.61") in April. With the increasing fall in temperatures, May marks an amicable retreat of the rainfall and the gradual onset of winter. In comparison to June, May weather tends to be slightly wetter and warmer. There's a sense of calm as the weather offers a symphony of falling temperatures and reduced rainfall.

Temperature

The arrival of May coincides with an average high-temperature of a still warm 23.1°C (73.6°F), indicating a minimal shift from April's 24.8°C (76.6°F). Cilaos notes a consistent average low-temperature of 20.3°C (68.5°F) during May nights.

Humidity

In Cilaos, the average relative humidity in May is 80%.

Rainfall

In May, in Cilaos, the rain falls for 20.3 days. Throughout May, 66mm (2.6") of precipitation is accumulated. Throughout the year, there are 252.8 rainfall days, and 1027mm (40.43") of precipitation is accumulated.

Daylight

In May, the average length of the day in Cilaos is 11h and 7min.
On the first day of May in Cilaos, sunrise is at 06:35 and sunset at 17:54. On the last day of the month, sunrise is at 06:47 and sunset at 17:43 +04.

Sunshine

The months with the least sunshine are May through July, with an average of 6.7h of sunshine.

UV index

The months with the highest UV index are January through March, May, October through December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: The daily maximum UV index of 6 in May interprets into the following advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.

Frequently asked questions

What are May temperatures in Cilaos?

In May, the average high-temperature and low-temperature are 23.1°C (73.6°F) and 20.3°C (68.5°F) respectively.

What is the average humidity in May in Cilaos?

The average relative humidity in May in Cilaos, Reunion, is 80%.

How many days does it rain in May in Cilaos?

In Cilaos, Reunion, during May, the rain falls for 20.3 days and regularly aggregates up to 66mm (2.6") of precipitation.

How many hours of daylight does Cilaos have in May?

The average day length in May is 11h and 7min.

When are sunrise and sunset in May in Cilaos?

In May, on the first day of the month, sunrise is at 06:35 and sunset at 17:54. On the last day of the month, in Cilaos, sunrise is at 06:47 and sunset at 17:43 +04.

What is the month with the least sunshine in Cilaos?

The months with the least sunshine in Cilaos, Reunion, are May through July, with an average of 6.7h of sunshine.

How many hours of sunshine does Cilaos have in May?

In May, the average sunshine duration in Cilaos is 6.7h.

When is the highest UV index in Cilaos?

The months with the highest UV index in Cilaos are January through March, May, October through December, with an average maximum UV index of 6.

What is the UV index intensity in May in Cilaos?

In Cilaos, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.

Average temperature in May
Cilaos, Reunion

Average temperature in May - Cilaos, Reunion
  • Average high temperature in May: 23.1°C

The warmest month (with the highest average high temperature) is February (25.9°C).
The month with the lowest average high temperature is July (20.7°C).

  • Average low temperature in May: 20.3°C

The months with the highest average low temperature are January, February and March (23.3°C).
The coldest month (with the lowest average low temperature) is August (17.8°C).

Average pressure in May
Cilaos, Reunion

Average pressure in May - Cilaos, Reunion
  • Average pressure in May: 1017.5mbar

The month with the highest atmospheric pressure is August (1021.4mbar).
The month with the lowest atmospheric pressure is February (1011.1mbar).

Average wind speed in May
Cilaos, Reunion

Average wind speed in May - Cilaos, Reunion
  • Average wind speed in May: 15.5km/h

The windiest month (with the highest average wind speed) is July (18.2km/h).
The calmest months (with the lowest average wind speed) are November and December (12.5km/h).

Average humidity in May
Cilaos, Reunion

Average humidity in May - Cilaos, Reunion
  • Average humidity in May: 80%

The month with the highest relative humidity is March (83%).
The months with the lowest relative humidity are August and September (78%).

Average rainfall in May
Cilaos, Reunion

Average rainfall in May - Cilaos, Reunion
  • Average rainfall in May: 66mm

The wettest month (with the highest rainfall) is January (193mm).
The driest month (with the least rainfall) is September (19mm).

Average rainfall days in May
Cilaos, Reunion

Average rainfall days in May - Cilaos, Reunion
  • Average rainfall days in May: 20.3 days

The month with the highest number of rainy days is March (26.2 days).
The month with the least rainy days is September (15.6 days).

Average daylight in May /
Average sunshine in May
Cilaos, Reunion

Average daylight in May / Average sunshine in May - Cilaos, 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 4min

The month with the most sunshine is October (Average sunshine: 10h and 30min).
The months with the least sunshine are May, June and July (Average sunshine: 6h and 42min).

Average sunshine days in May
Cilaos, Reunion

Average sunshine days in May - Cilaos, Reunion
  • Average sunshine days in May: 3.9 days

The month with the most sunshine days is October (6.6 days).
The month with the least sunshine days is February (1.1 days).

Average UV index in May
Cilaos, Reunion

Average UV index in May - Cilaos, Reunion
  • Average UV index in May: 6

The months with the highest UV index are January, February, March, May, October, November and December (UV index 6).
The months with the lowest UV index are April, June, July, August and September (UV index 5).

Average cloud cover in May
Cilaos, Reunion

Average cloud cover in May - Cilaos, Reunion
  • Average cloud cover in May: 31

The months with the most cloud cover are February and March (Cloud cover 41).
The month with the least cloud cover is September (Cloud cover 24).

Average visibility in May
Cilaos, Reunion

Average visibility in May - Cilaos, Reunion
  • Average visibility in May: 10km

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is January (9km).

Cilaos, Reunion

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