December weather forecastHell-Bourg, Reunion
December
Weather in December
Closing the calendar, December sustains the rising trend in weather circumstances. Temperature maintains a high average just before the probable peak in January. Rainfall increases significantly, reaching 99mm (3.9") on average. Long hours of daylight intensify under heightened UV index conditions. It's a month of warm temperatures, increased rainfall, and plenty of sunshine in Hell-Bourg, Reunion.Temperature
The arrival of December sees an average high-temperature of a still moderately hot 25.1°C (77.2°F), hardly diverging from November's 23.6°C (74.5°F). Hell-Bourg's nighttime temperature in December consistently rests at a pleasant 22.7°C (72.9°F).Humidity
The average relative humidity in December is 81%.Rainfall
In Hell-Bourg, during December, the rain falls for 26.7 days and regularly aggregates up to 99mm (3.9") of precipitation. Throughout the year, there are 280.3 rainfall days, and 1115mm (43.9") of precipitation is accumulated.Daylight
With an average of 13h and 24min of daylight, December has the longest days of the year.On the first day of the month, sunrise is at 05:27 and sunset at 18:46. On the last day of December, in Hell-Bourg, sunrise is at 05:39 and sunset at 19:02 +04.
Sunshine
In December, the average sunshine in Hell-Bourg is 10h.UV index
The months with the highest UV index in Hell-Bourg are January through May, November and December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.Note: An average UV index of 6 in December transforms into this advice:
Guard oneself from overexposure. Defence against sun injury is vital. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hell-Bourg, Reunion
- Average high temperature in December: 25.1°C
The warmest month (with the highest average high temperature) is January (25.7°C).
The month with the lowest average high temperature is August (20.4°C).
- Average low temperature in December: 22.7°C
The month with the highest average low temperature is February (23.6°C).
The coldest month (with the lowest average low temperature) is August (18.2°C).
Average pressure in December
Hell-Bourg, Reunion
- Average pressure in December: 1013.3mbar
The month with the highest atmospheric pressure is August (1021.3mbar).
The month with the lowest atmospheric pressure is February (1011mbar).
Average wind speed in December
Hell-Bourg, Reunion
- Average wind speed in December: 12.4km/h
The windiest month (with the highest average wind speed) is July (18km/h).
The calmest months (with the lowest average wind speed) are November and December (12.4km/h).
Average humidity in December
Hell-Bourg, Reunion
- Average humidity in December: 81%
The months with the highest relative humidity are February and March (84%).
The months with the lowest relative humidity are August and September (79%).
Average rainfall in December
Hell-Bourg, Reunion
- Average rainfall in December: 99mm
The wettest month (with the highest rainfall) is January (199mm).
The driest month (with the least rainfall) is September (26mm).
Average rainfall days in December
Hell-Bourg, Reunion
- Average rainfall days in December: 26.7 days
The month with the highest number of rainy days is March (27.7 days).
The month with the least rainy days is September (18.5 days).
Average daylight in December /
Average sunshine in December
Hell-Bourg, Reunion
- Average daylight in December: 13h and 24min
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 0min
The month with the most sunshine is October (Average sunshine: 10h and 12min).
The month with the least sunshine is June (Average sunshine: 6h and 18min).
Average sunshine days in December
Hell-Bourg, Reunion
- Average sunshine days in December: 1.2 days
The month with the most sunshine days is October (5.5 days).
The month with the least sunshine days is February (0.3 days).
Average UV index in December
Hell-Bourg, Reunion
- Average UV index in December: 6
The months with the highest UV index are January, February, March, April, May, November and December (UV index 6).
The months with the lowest UV index are June, July, August, September and October (UV index 5).
Average cloud cover in December
Hell-Bourg, Reunion
- Average cloud cover in December: 42
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 33).
Average visibility in December
Hell-Bourg, Reunion
- Average visibility in December: 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).
