Grand Baie
Mauritius
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Grand Baie, Mauritius

The first month of the summer, December, is also a moderately hot month in Grand Baie, Mauritius, with average temperature ranging between max 29°C (84.2°F) and min 21°C (69.8°F).

Temperature

In December, the average high-temperature remains equal as in November - a still moderately hot 29°C (84.2°F). In Grand Baie, the average low-temperature is 21°C (69.8°F).

Rainfall

In Grand Baie, Mauritius, during December, the rain falls for 16 days and regularly aggregates up to 162mm (6.4") of precipitation. In Grand Baie, during the entire year, the rain falls for 177 days and collects up to 1510mm (59.4") of precipitation.

Sea temperature

In Grand Baie, the average seawater temperature in December is 26.7°C (80.1°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.

Daylight

The month with the longest days is December, with an average of 13.3h of daylight.

Sunshine

Months with the most sunshine in Grand Baie are January, February, October through December, with an average of 8h of sunshine.

UV index

Months with the highest UV index are January through March, October through December, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme health hazard from unsafe exposure to the UV radiation for ordinary individuals.
In December, the average maximum UV index of 12 translate into the following recommendations:
Practice all essential precautions. Protection against sun damage is crucial. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. 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 Grand Baie?

The average high-temperature, in December, in Grand Baie, Mauritius, is 29°C (84.2°F), while the average low-temperature is 21°C (69.8°F).

How many days does it rain in December in Grand Baie?

In Grand Baie, in December, during 16 rainfall days, 162mm (6.4") of precipitation is typically accumulated.

How warm is the water in December in Grand Baie?

In Grand Baie, Mauritius, in December, the average water temperature is 26.7°C (80.1°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 Grand Baie?

December has the longest days of the year in Grand Baie, Mauritius, with an average of 13.3h of daylight.

What is the average length of the day in December in Grand Baie?

In December, the average length of the day is 13.3h.

What are the months with the most sunshine in Grand Baie?

January, February, October through December, with an average of 8h of sunshine, are months with the most sunshine in Grand Baie.

How long on average sun shines in December in Grand Baie?

In December, the average sunshine in Grand Baie, Mauritius, is 8h.

When is the highest UV index in Grand Baie?

January through March, October through December, with an average maximum UV index of 12, are months with the highest UV index.

How high is the UV index in December in Grand Baie?

In Grand Baie, the average daily maximum UV index in December is 12. A UV Index value of 11, and more, symbolizes an ultimate hazard to health from the exposure to the Sun's UV rays.
Average temperature in December - Grand Baie, Mauritius
  • Average high temperature in December: 29°C

Warmest months (with the highest average high temperature) are January, February and March (30°C).
Months with the lowest average high temperature are June, July and August (25°C).

  • Average low temperature in December: 21°C

Months with the highest average low temperature are January, February and March (22°C).
The coldest month (with the lowest average low temperature) is August (16°C).

Average rainfall in December - Grand Baie, Mauritius
  • Average rainfall in December: 162mm

The wettest month (with the highest rainfall) is February (242mm).
The driest month (with the lowest rainfall) is October (50mm).

Average rainfall days in December - Grand Baie, Mauritius
  • Average rainfall days in December: 16 days

Months with the highest number of rainy days are January, February and March (17 days).
Months with the lowest number of rainy days are September and November (12 days).

Average sea temperature in December - Grand Baie, Mauritius
  • Average sea temperature in December: 26.7°C

The best month for swimming (with the highest average sea temperature) is March (28.5°C).
The coldest month (with the lowest average sea temperature) is September (23.4°C).

Average daylight in December / Average sunshine in December - Grand Baie, Mauritius
  • Average daylight in December: 13.3h

The month with the longest days is December (Average daylight: 13.3h).
The month with shortest days is June (Average daylight: 10.9h).

  • Average sunshine in December: 8h

Months with most sunshine are January, February, October, November and December (Average sunshine: 8h).
Months with least sunshine are March, April, May, June, July, August and September (Average sunshine: 7).

Average UV index in December - Grand Baie, Mauritius
  • Average UV index in December: 12

Months with the highest UV index are January, February, March, October, November and December (UV index 12).
Months with the lowest UV index are June and July (UV index 6).