December weather forecast
Trou d'Eau Douce, Mauritius

Closing the year, the weather in December in Trou d'Eau Douce comes full circle with warmer temperatures hinting the arrival of summer. Rainfall surges to 75mm (2.95") over 15.8 days, an evident upswing from previous months. However, these occasional rain showers hardly impact the generous sunshine hours, that saturate the tropical island. The confluence of warm sea temperatures and increased daylight hours pronounces December as an inviting time for holidaymakers. The tropical allure of Trou d'Eau Douce, Mauritius remains constant as the year cycles back to January.

Temperature

December's arrival shows an average high-temperature of a still moderately hot 27.2°C (81°F), hardly different from the previous month. In Trou d'Eau Douce, the December nights are characterized by an average low-temperature of 25°C (77°F), a minor dip from daytime readings.

Heat index

For most parts of December, the heat index is evaluated at a tropical 30°C (86°F). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Trou d'Eau Douce, during December, the rain falls for 15.8 days and regularly aggregates up to 75mm (2.95") of precipitation. In Trou d'Eau Douce, during the entire year, the rain falls for 199.3 days and collects up to 565mm (22.24") of precipitation.

Sea temperature

In December, the average sea temperature is 27°C (80.6°F).
Note: Swimming, diving, and other activities in water temperatures between 25°C (77°F) and 29°C (84.2°F) are thought to be quite enjoyable and satisfying for extended periods, with no discomfort.

Daylight

December has the longest days of the year, with an average of 13h and 18min of daylight.
On the first day of December in Trou d'Eau Douce, sunrise is at 05:19 and sunset at 18:36. On the last day of the month, sunrise is at 05:31 and sunset at 18:52 +04.

Sunshine

December has the most sunshine of the year, with an average of 10.7h of sunshine.

UV index

January through April, November and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 7 in December translates into this advice:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. 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. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Attention! The reflection of both water and sand can increase the intensity of UV rays.