Monthly climate guide

Saint-Denis weather in December

Expect warm weather in Saint-Denis in December: afternoons reach about 27°C (80°F), while nights drop to around 22°C (72°F). Around 47 mm of rain falls over the month (fairly dry), and skies are a mix of sun and cloud. Daytime highs are about the same as November and about the same as January.

What stands out in December

Even after dark it stays around 22°C, so sleeping can feel warm.
It's humid — around 74% — so the heat feels heavier.
Days and nights are close, only about 5°C apart.

December is typically Saint-Denis's warmest month.

Avg high

27°C

80°F

Avg low

22°C

72°F

Rainfall

47 mm

fairly dry

Humidity

74%

relative

Sky

47%

cloud · a mix of sun and cloud

Live Saint-Denis forecast Where else to go in December

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Saint-Denis weather by month

Low → high °C Rain (mm)

Show the monthly averages as a table

Average monthly climate in Saint-Denis
Month	Avg high	Avg low	Rain	Humidity	Cloud cover
January	27°C / 80°F	23°C / 73°F	150 mm	79%	58%
February	27°C / 80°F	23°C / 73°F	109 mm	80%	58%
March	26°C / 79°F	23°C / 73°F	144 mm	81%	55%
April	25°C / 77°F	22°C / 71°F	77 mm	81%	50%
May	24°C / 74°F	20°C / 68°F	39 mm	78%	46%
June	22°C / 71°F	19°C / 65°F	36 mm	79%	48%
July	21°C / 70°F	18°C / 64°F	26 mm	77%	47%
August	21°C / 70°F	17°C / 63°F	27 mm	77%	46%
September	22°C / 72°F	18°C / 64°F	21 mm	75%	42%
October	24°C / 75°F	19°C / 66°F	30 mm	75%	43%
November	26°C / 78°F	20°C / 69°F	44 mm	74%	45%
December	27°C / 80°F	22°C / 72°F	47 mm	74%	47%

What to pack for December

T-shirts plus a light layer for the evening
Comfortable trainers or sandals for long walks
A small travel umbrella, just in case

Full season-by-season packing guide →

Is December a good time to visit Saint-Denis?

Compare the months in the chart above to find your ideal window.

Best time to visit Saint-Denis →

Other Réunion cities in December

Saint-Pierre

27° / 25°C · 45 mm

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Saint-Denis weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/reunion/saint-denis/december

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Saint-Denis in December: quick answers

Is December a good time to visit Saint-Denis?

December is a reasonable time for Saint-Denis: highs around 27°C and about 47 mm of rain, though not one of the three best months.

How warm is Saint-Denis in December?

Average highs are about 27°C (80°F) and average lows about 22°C (72°F), based on 10 years of daily data.

Does it rain a lot in Saint-Denis in December?

Saint-Denis typically gets around 47 mm of rain in December — fairly dry.

Figures are long-term averages for the area around Saint-Denis (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.