Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Saint-Louis registers an average high-temperature of a still warm 25.6°C (78.1°F) with the arrival of December, showing minor deviation from the preceding month. Saint-Louis sees a gentle drop from the daily peak temperature in December, with an average low settling at a still moderately hot 23.5°C (74.3°F).Humidity
In Saint-Louis, the average relative humidity in December is 79%.Rainfall
In Saint-Louis, in December, during 21.2 rainfall days, 66mm (2.6") of precipitation is typically accumulated. In Saint-Louis, during the entire year, the rain falls for 207.9 days and collects up to 756mm (29.76") of precipitation.Daylight
December has the longest days of the year, with an average of 13h and 24min of daylight.On the first day of the month, sunrise is at 05:27 and sunset at 18:47. On the last day of December, sunrise is at 05:39 and sunset at 19:03 +04.
Sunshine
In December, the average sunshine is 10.6h.UV index
January, March through December, with an average maximum UV index of 6, are months with the lowest UV index in Saint-Louis. 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 December, the UV index of 6 transforms into the following advice:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What are December temperatures in Saint-Louis?
What is the average humidity in December in Saint-Louis?
How much does it rain in Saint-Louis in December?
When are the longest days in Saint-Louis?
How many hours of daylight does Saint-Louis have in December?
What time are sunrise and sunset in December in Saint-Louis?
How many hours of sunshine does Saint-Louis have in December?
What are the months with the lowest UV index in Saint-Louis?
What is the UV index reading in December in Saint-Louis?
Average temperature in December
Saint-Louis, Reunion
- Average high temperature in December: 25.6°C
The warmest months (with the highest average high temperature) are January, February and March (26.3°C).
The month with the lowest average high temperature is July (21.3°C).
- Average low temperature in December: 23.5°C
The months with the highest average low temperature are January and February (24.3°C).
The coldest month (with the lowest average low temperature) is July (18.8°C).
Average pressure in December
Saint-Louis, Reunion
- Average pressure in December: 1013.4mbar
The month with the highest atmospheric pressure is August (1021.5mbar).
The month with the lowest atmospheric pressure is February (1011.1mbar).
Average wind speed in December
Saint-Louis, Reunion
- Average wind speed in December: 13.5km/h
The windiest month (with the highest average wind speed) is July (19.8km/h).
The calmest month (with the lowest average wind speed) is November (13.4km/h).
Average humidity in December
Saint-Louis, Reunion
- Average humidity in December: 79%
The months with the highest relative humidity are January, February, March and April (81%).
The months with the lowest relative humidity are July, August and September (77%).
Average rainfall in December
Saint-Louis, Reunion
- Average rainfall in December: 66mm
The wettest month (with the highest rainfall) is January (162mm).
The driest month (with the least rainfall) is September (10mm).
Average rainfall days in December
Saint-Louis, Reunion
- Average rainfall days in December: 21.2 days
The month with the highest number of rainy days is March (24.9 days).
The month with the least rainy days is September (9.5 days).
Average daylight in December /
Average sunshine in December
Saint-Louis, Reunion
- Average daylight in December: 13h and 2min
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 December: 10h and 4min
The month with the most sunshine is October (Average sunshine: 10h and 54min).
The month with the least sunshine is May (Average sunshine: 6h and 54min).
Average sunshine days in December
Saint-Louis, Reunion
- Average sunshine days in December: 3.5 days
The month with the most sunshine days is August (13.5 days).
The month with the least sunshine days is February (1.7 days).
Average UV index in December
Saint-Louis, Reunion
- Average UV index in December: 6
The month with the highest UV index is February (UV index 7).
The months with the lowest UV index are January, March, April, May, June, July, August, September, October, November and December (UV index 6).
Average cloud cover in December
Saint-Louis, Reunion
- Average cloud cover in December: 33
The month with the most cloud cover is February (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 21).
Average visibility in December
Saint-Louis, Reunion
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Saint-Louis, Reunion
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