January weather forecast and climate
Saint-Denis, Reunion

An aerial panoramic shot of the glorious landscape of the Saint-Denis city, on Reunion Island
An aerial panoramic shot of the glorious landscape of the Saint-Denis city, on Reunion Island
January in Saint-Denis, Reunion, is a tropical summer month, with average temperature varying between 30.1°C (86.2°F) and 23.5°C (74.3°F).

Temperature

The warmest months are January and February, with an average high-temperature of 30.1°C (86.2°F).

Rainfall

In January, the rain falls for 13.3 days. Throughout January, 278.6mm (10.97") of precipitation is accumulated. Throughout the year, in Saint-Denis, there are 119.3 rainfall days, and 1658.6mm (65.3") of precipitation is accumulated.

Sea temperature

In Saint-Denis, in January, the average water temperature is 27.8°C (82°F).
Note: 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

In Saint-Denis, the average length of the day is 13.2h.

Sunshine

January and October, with an average of 6.8h of sunshine, are months with the least sunshine in Saint-Denis.

UV index

January through March, November and December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an extreme health hazard from unprotected exposure to the Sun's UV rays for the average person.
Note: In January, the average maximum UV index of 12 translate into the following recommendations:
Take all required precautions, as unprotected skin and eyes can burn in minutes. 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 reflection of water and sand dramatically increases exposure to the UV rays.

What are the warmest months in Saint-Denis?

January and February, with an average high-temperature of 30.1°C (86.2°F), are warmest months in Saint-Denis, Reunion.

What is the temperature in January in Saint-Denis?

The average high-temperature, in January, in Saint-Denis, Reunion, is 30.1°C (86.2°F), while the average low-temperature is 23.5°C (74.3°F).

How many days does it rain in January in Saint-Denis?

In Saint-Denis, Reunion, during January, the rain falls for 13.3 days and regularly aggregates up to 278.6mm (10.97") of precipitation.

What is the sea water temperature in January in Saint-Denis?

In Saint-Denis, Reunion, the average seawater temperature in January is 27.8°C (82°F). 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.

How many hours of daylight does Saint-Denis have in January?

In January, the average length of the day in Saint-Denis is 13.2h.

What is the month with the least sunshine in Saint-Denis?

Months with the least sunshine are January and October, with an average of 6.8h of sunshine.

How many hours of sunshine does Saint-Denis have in January?

In January, the average sunshine in Saint-Denis is 6.8h.

What are the months with the highest UV index in Saint-Denis?

Months with the highest UV index in Saint-Denis, Reunion, are January through March, November and December, with an average maximum UV index of 12.

What is the UV index reading in January in Saint-Denis?

In January, the average daily maximum UV index is 12. A UV Index estimate of 11, and higher, represents an extreme health threat from the exposure to the Sun's UV radiation.
Average temperature in January - Saint-Denis, Reunion
  • Average high temperature in January: 30.1°C

The warmest months (with the highest average high temperature) are January and February (30.1°C).
The month with the lowest average high temperature is July (25.2°C).

  • Average low temperature in January: 23.5°C

The month with the highest average low temperature is February (23.7°C).
The coldest month (with the lowest average low temperature) is August (18°C).

Average rainfall in January - Saint-Denis, Reunion
  • Average rainfall in January: 278.6mm

The wettest month (with the highest rainfall) is February (351mm).
The driest month (with the least rainfall) is October (43.4mm).

Average rainfall days in January - Saint-Denis, Reunion
  • Average rainfall days in January: 13.3 days

The month with the highest number of rainy days is February (14.3 days).
The month with the least rainy days is November (5.9 days).

Average sea temperature in January - Saint-Denis, Reunion
  • Average sea temperature in January: 27.8°C

The best month for swimming (with the highest average sea temperature) is March (28.5°C).
The coldest months (with the lowest average sea temperature) are August and September (23.8°C).

Average daylight in January / Average sunshine in January - Saint-Denis, Reunion
  • Average daylight in January: 13.2h

The month with the longest days is December (Average daylight: 13.4h).
The month with the shortest days is June (Average daylight: 10.9h).

  • Average sunshine in January: 6.8h

Months with the most sunshine are April and December (Average sunshine: 7.4h).
Months with the least sunshine are January and October (Average sunshine: 6.8).

Average UV index in January - Saint-Denis, Reunion
  • Average UV index in January: 12

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