Réunion
Réunion in January: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Réunion in January is climatically well suited to beach holidays and family holidays. The average daily high is around 27 °C, and the sea is about 28 °C. With about 19 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
67/100 · #10
Warmth
#2
Dryness
#11
Sun
#4
Sea warmth
#3
Published best categories: Beach
Réunion · JanuaryPhoto: Bascobug · CC BY-SA 4.0Climate facts
- Average high
- 27 °C
- Average low
- 22 °C
- Sea
- 28 °C
- Rainy days (est.)
- 19 rainy days (est.)
- Sun (est.)
- 8 h/day
- Humidity
- 79 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| December | 26 | 21 | 14 | 73 | 9.0 | 76 | 4.2 | 27 | 76 |
| January (selected) | 27 | 22 | 19 | 133 | 8.4 | 79 | 4.5 | 28 | 67 |
| February | 27 | 23 | 18 | 122 | 8.1 | 81 | 4.8 | 28 | 67 |
How do the previous and next months compare?
Baseline: January (67/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| December | +9 | -0.4 °C | -1 °C | -5 | -59.8 mm | +0.6 h | -3.5 % | -0.4 m/s | -0.8 °C |
| February | ±0 | +0.1 °C | +0.2 °C | -1.1 | -11.1 mm | -0.3 h | +1.2 % | +0.3 m/s | +0.5 °C |
All twelve months in context

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Where to stay in Réunion
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Useful next decisions
Frequently asked questions
How warm is Réunion in January?
The average daily high is around 27 °C, with an average daily low of about 22 °C.
Can you swim in Réunion in January?
The sea is about 28 °C (very warm).
Does it rain a lot in Réunion in January?
The curated estimate is about 19 rainy days per month, not a directly measured long-term average. Total precipitation averages around 133 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Réunion?
By the climate score, September, October, November and December are the strongest months for Réunion. For a beach trip: January, October, November and December. January is not among them.