December weather forecast and climate
Mahé, Seychelles

A view from mount Copolia, of the scenic islands of Victoria and Eden, in Mahé, Seychelles, surrounded by clear water
A view from mount Copolia, of the scenic islands of Victoria and Eden, in Mahé, Seychelles, surrounded by clear water
The first month of the summer, December, is still a warm month in Mahé, Seychelles, with average temperature fluctuating between 28°C (82.4°F) and 27.2°C (81°F).

Temperature

In December, the average high-temperature is practically the same as in November - a still moderately hot 28°C (82.4°F). In Mahé, the average low-temperature is 27.2°C (81°F).

Heat index

The average heat index is estimated at a hot 31.5°C (88.7°F). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, clothing, pregnancy). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Mahé, during December, the rain falls for 21.8 days and regularly aggregates up to 166mm (6.54") of precipitation. In Mahé, Seychelles, during the entire year, the rain falls for 241.9 days and collects up to 1432mm (56.38") of precipitation.

Sea temperature

In December, the average sea temperature in Mahé is 28.2°C (82.8°F).
Note: Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

Daylight

Months with the longest days are January and December, with an average of 12.4h of daylight.

Sunshine

In Mahé, the average sunshine is 8.4h.

UV index

Months with the highest UV index in Mahé are January through December, with an average maximum UV index of 7. Months with the lowest UV index in Mahé are January through December, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 7 translate into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in December in Mahé?

In Mahé, in December, the average high-temperature is 28°C (82.4°F), and the average low-temperature is 27.2°C (81°F). The average heat index (a.k.a. 'feels like', 'real feel'), that takes the relative humidity and factores it into the air temperature reading, in December is evaluated at 31.5°C (88.7°F).

What is the average humidity in December in Mahé?

In December, the average relative humidity is 76%.

How many days does it rain in December in Mahé?

In December, in Mahé, the rain falls for 21.8 days. Throughout December, 166mm (6.54") of precipitation is accumulated.

What is the water temperature in December in Mahé?

In Mahé, in December, the average water temperature is 28.2°C (82.8°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

When are the longest days in Mahé?

Months with the longest days in Mahé, Seychelles, are January and December, with an average of 12.4h of daylight.

What is the average length of the day in December in Mahé?

In December, the average length of the day in Mahé, Seychelles, is 12.4h.

How many hours of sunshine does Mahé have in December?

In Mahé, the average sunshine in December is 8.4h.

What are the months with the highest UV index in Mahé?

Months with the highest UV index are January through December, with an average maximum UV index of 7.

What are the months with the lowest UV index in Mahé?

Months with the lowest UV index in Mahé are January through December, with an average maximum UV index of 7.

How high is the UV index in December in Mahé?

The average daily maximum UV index in December in Mahé is 7. A UV Index of 6 to 7 symbolizes a high health risk from the exposure to the Sun's UV radiation.
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%

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: 12.4h

Months with the longest days are January and December (Average daylight: 12.4h).
Months with the shortest days are May, June and July (Average daylight: 11.9h).

  • Average sunshine in December: 8.4h

The month with the most sunshine is November (Average sunshine: 10.1h).
The month with the least sunshine is September (Average sunshine: 7h).

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

Months with the highest UV index are January, February, March, April, May, June, July, August, September, October, November and December (UV index 7).
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

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).