December weather forecast
Port Louis, Mauritius

Concluding the year in Port Louis, December brings an upsurge in temperatures, further intensifying the summer vibe. With 13.3 hours of daylight, December offers the longest daylight period of the year. The ocean remains warm and inviting with an average temperature of 26.8°C (80.2°F). Despite an increase in rainfall to 50mm (1.97"), December is predominated by sunny and clear days, enhancing the holiday experience. Even with higher wind speeds, conditions remain favorable for a variety of water sports, thereby wrapping up an exciting year of weather dynamics in Port Louis, Mauritius.

Temperature

Port Louis, Mauritius, indicates an average high-temperature of a still moderately hot 27.6°C (81.7°F) in December, showing minor variation from November's 26.3°C (79.3°F). The nights of December are characterized by an average low-temperature of 25.2°C (77.4°F), subtly descending from daytime highs.

Heat index

The average heat index in December is evaluated at a hot 30°C (86°F). If exposure and ongoing activity persist, they might induce a state of tiredness and heat cramps.
Remember that heat index calculations are made for conditions in the shade with light wind. The heat index could see an increase by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'real feel' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.

Humidity

In Port Louis, the average relative humidity in December is 75%.

Rainfall

In Port Louis, in December, during 13.5 rainfall days, 50mm (1.97") of precipitation is typically accumulated. In Port Louis, Mauritius, during the entire year, the rain falls for 177.1 days and collects up to 480mm (18.9") of precipitation.

Sea temperature

In Port Louis, in December, the average water temperature is 26.8°C (80.2°F).
Note: Water temperature ranging between 25°C (77°F) and 29°C (84.2°F) is considered very warm and pleasing for everyone. It allows for enjoyable water activities over extended periods without discomfort.

Daylight

The month with the longest days in Port Louis is December, with an average of 13h and 18min of daylight.
On the first day of December, sunrise is at 05:21 and sunset at 18:37. On the last day of the month, sunrise is at 05:33 and sunset at 18:53 +04.

Sunshine

In December, the average sunshine is 10.3h.

UV index

The months with the highest UV index are January through April and December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 7 during December translates into the following directions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Stay alert! Reflective properties of sand and water amplify the Sun's UV radiation.