December weather forecastMahé, Seychelles

December
Weather in December
Entering December, subtle changes in weather conditions are experienced in Mahé, Seychelles. There is a slight drop in temperature while the amount of rainfall slightly increases up to 166mm (6.54"). This month experiences more daylight hours compared to previous months. December offers ideal climatic conditions for both relaxation and exploration, making it a fantastic time to visit. The month culminates with pleasant weather fostering a wonderful atmosphere for holiday celebrations.Temperature
The arrival of December in Mahé brings an average high-temperature of a still moderately hot 28°C (82.4°F), subtly diverging from November's 27.9°C (82.2°F). During the month of December, Mahé identifies an average nighttime low-temperature of 27.2°C (81°F), slightly lower than its daytime counterpart.Heat index
The heat index value during December is appraised at a hot 32°C (89.6°F). If one continues to be active during enduring exposure, it could result in fatigue and heat cramps.It is worth noting that heat index values are gauged for conditions in the shade and light breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Humidity
The average relative humidity in December is 76%.Rainfall
In Mahé, Seychelles, during December, the rain falls for 21.8 days and regularly aggregates up to 166mm (6.54") of precipitation. In Mahé, during the entire year, the rain falls for 241.9 days and collects up to 1432mm (56.38") of precipitation.Sea temperature
In Mahé, the average seawater temperature in December is 28.2°C (82.8°F).Note: Surface water temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as ideal and highly pleasant for extended enjoyment in all water activities.
Daylight
With an average of 12h and 24min of daylight, December has the longest days of the year in Mahé, Seychelles.On the first day of the month, sunrise is at 05:55 and sunset at 18:18. On the last day of December, sunrise is at 06:09 and sunset at 18:32 +04.
Sunshine
In Mahé, Seychelles, the average sunshine in December is 8.4h.UV index
January through December, with an average maximum UV index of 7, are months with the highest UV index. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, the maximum UV index of 7 suggests this advice:
Resist overexposure. Safeguarding from solar damage is indispensable. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Notice! The reflection of water and sand increases the UV radiation significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mahé, Seychelles
- Average high temperature in December: 28°C
The warmest month (with the highest average high temperature) is April (29.3°C).
The month with the lowest average high temperature is August (26.4°C).
- Average low temperature in December: 27.2°C
The month with the highest average low temperature is April (28.1°C).
The coldest months (with the lowest average low temperature) are July and August (25.7°C).
Average pressure in December
Mahé, Seychelles
- Average pressure in December: 1010.6mbar
The month with the highest atmospheric pressure is August (1012.4mbar).
The month with the lowest atmospheric pressure is April (1010.4mbar).
Average wind speed in December
Mahé, Seychelles
- Average wind speed in December: 17.1km/h
The windiest month (with the highest average wind speed) is August (28.1km/h).
The calmest month (with the lowest average wind speed) is April (12.8km/h).
Average humidity in December
Mahé, Seychelles
- Average humidity in December: 76%
The months with the highest relative humidity are July, August and September (80%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Mahé, Seychelles
- Average rainfall in December: 166mm
The wettest month (with the highest rainfall) is January (220mm).
The driest month (with the least rainfall) is August (50mm).
Average rainfall days in December
Mahé, Seychelles
- Average rainfall days in December: 21.8 days
The month with the highest number of rainy days is January (23.2 days).
The month with the least rainy days is November (17.3 days).
Average sea temperature in December
Mahé, Seychelles
- Average sea temperature in December: 28.2°C
The best month for swimming (with the highest average sea temperature) is April (29.8°C).
The coldest month (with the lowest average sea temperature) is August (26.2°C).
Average daylight in December /
Average sunshine in December
Mahé, Seychelles
- Average daylight in December: 12h and 24min
The month with the longest days is December (Average daylight: 12h and 24min).
The month with the shortest days is June (Average daylight: 11h and 54min).
- Average sunshine in December: 8h and 24min
The month with the most sunshine is November (Average sunshine: 10h and 6min).
The month with the least sunshine is September (Average sunshine: 7h and 0min).
Average sunshine days in December
Mahé, Seychelles
- Average sunshine days in December: 7.6 days
The month with the most sunshine days is November (10.9 days).
The month with the least sunshine days is June (3 days).
Average UV index in December
Mahé, Seychelles
- Average UV index in December: 7
The months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
Average cloud cover in December
Mahé, Seychelles
- Average cloud cover in December: 44
The month with the most cloud cover is September (Cloud cover 51).
The month with the least cloud cover is November (Cloud cover 41).
Average visibility in December
Mahé, Seychelles
- 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).





