Saint-Denis weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Good
Best time to visit: June – December
What is the weather like in Saint-Denis in January?
In January, Saint-Denis is hot: daytime highs average 27 °C, and even at night it stays warm at around 25 °C. The sea averages 27.8 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. It is the rainy season: rain falls on about 22 days, totalling 269 mm. The air is often humid and muggy. All in all, January is a good month for a holiday in Saint-Denis.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 70 | 65 | 63 |
| Day | 27° | 27° | 28° |
| Night | 24° | 25° | 25° |
| Sea | 27° | 28° | 28° |
| Sun | 9 h | 8 h | 8 h |
| Rain days | 20 | 22 | 22 |
More details for January
- Daylight
- 13 h 16 min05:49 – 19:05
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 31 daysdew point 18 °C or moreAll months
- Wind
- 12 km/haverage daily peakAll months
- Cloud cover
- 66 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+4Indian/Reunion
How the score comes together
- Temperatureweight 50 %95 %
- Sunshineweight 20 %85 %
- Few rainy daysweight 30 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in January
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Saint-Denis in January: quick answers
Is Saint-Denis hot in January?
Yes. In January, Saint-Denis is hot: daytime highs average 27 °C and nights stay around 25 °C.
Can you swim in Saint-Denis in January?
Yes. In January the sea averages 27.8 °C – lovely and warm for swimming.
Does it rain much in Saint-Denis in January?
It rains often – on about 22 days, adding up to 269 mm.
Saint-Denis month by month
The whole year in Saint-DenisAll destinations: RéunionWhere to go in JanuarySea temperature in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences