December weather forecast
Reunion

December in Reunion sees the full swing of the austral summer, with high temperatures and substantial rainfall. Coastal regions typically experience temperatures from 24°C (75.2°F) to 29°C (84.2°F), while the highlands see temperatures between 17°C (62.6°F) to 22°C (71.6°F).

Cities such as Saint-Denis and Saint-Pierre follow these temperature patterns. The high humidity levels prevalent during this month intensify the sensation of heat, making the conditions feel even warmer, especially in the urban areas.

December also marks the beginning of the cyclone season. The eastern coast and the mountainous regions experience heavy rainfall, with precipitation levels ranging from 200mm (7.87") to 350mm (13.78"). The western coast, under the rain shadow effect, receives less rainfall, though it is higher than in the cooler months.

When compared to November, December's temperatures remain relatively consistent, but rainfall increases due to the onset of the cyclone season. As the island transitions into January, these hot, wet conditions continue, along with the risk of extreme weather events from potential cyclones.

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• Saint-Denis - December »
  The month with the longest days in Saint-Denis is December, with an average of 13h and 24min of daylight. In Saint-Denis, in December, during 11.1 rainfall days, 189mm (7.44") of precipitation is typically accumulated.
• Saint-Paul - December »
  December has the longest days of the year in Saint-Paul with an average of 13h and 24min of daylight. Saint-Paul transitions into December recording an average high-temperature of a still moderately hot 25.5°C (77.9°F), closely aligning with the preceding month's temperature.
• Saint-Pierre - December »
  December has the longest days of the year in Saint-Pierre, Reunion, with an average of 13h and 24min of daylight. In Saint-Pierre, in December, during 21.2 rainfall days, 66mm (2.6") of precipitation is typically accumulated.
• Saint-Louis - December »
  The month with the longest days in Saint-Louis is December, with an average of 13h and 24min of daylight. On the first day of December in Saint-Louis sunrise is at 05:27 and sunset at 18:47.
• Le Port - December »
  On the first day of December in Le Port sunrise is at 05:28 and sunset at 18:46. December has the longest days of the year in Le Port, with an average of 13h and 24min of daylight.
• Saint-Joseph - December »
  In Saint-Joseph in December, the average water temperature is 26.6°C (79.9°F). With an average of 13h and 24min of daylight, December has the longest days of the year in Saint-Joseph.
• Saint-Leu - December »
  The month with the longest days in Saint-Leu is December, with an average of 13h and 24min of daylight. In Saint-Leu, the warmest months are January through March and December, registering an average high-temperature of 27°C (80.6°F).
• Les Avirons - December »
  In December, Les Avirons concludes the year with a mild jump in sea temperature from 25.3°C (77.5°F) in November to a comfortable 26.7°C (80.1°F). With an average of 13h and 24min of daylight, December has the longest days of the year in Les Avirons, Reunion.