Réunion
Réunion in August: weather, sea & travel advice
This month's data profile
Rain shapes the decision
Réunion in August is climatically well suited to city breaks, active holidays and hiking and beach holidays. The average daily high is around 20 °C, and the sea is about 24 °C. With about 12 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
73/100 · #6
Warmth
#11
Dryness
#5
Sun
#9
Sea warmth
#12
Published best categories: City break, Active
Réunion · AugustPhoto: Bascobug · CC BY-SA 4.0Climate facts
- Average high
- 20 °C
- Average low
- 17 °C
- Sea
- 24 °C
- Rainy days (est.)
- 12 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 78 %
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 |
|---|---|---|---|---|---|---|---|---|---|
| July | 20 | 17 | 12 | 34 | 5.2 | 78 | 5.1 | 24 | 72 |
| August (selected) | 20 | 17 | 12 | 39 | 6.2 | 78 | 4.9 | 24 | 73 |
| September | 21 | 17 | 11 | 36 | 7.5 | 76 | 4.7 | 24 | 79 |
How do the previous and next months compare?
Baseline: August (73/100)
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 | |
|---|---|---|---|---|---|---|---|---|---|
| July | -1 | -0.1 °C | +0.2 °C | -0.4 | -4.8 mm | -1 h | +0.6 % | +0.2 m/s | +0.4 °C |
| September | +6 | +0.9 °C | +0.4 °C | -1.4 | -3.4 mm | +1.3 h | -1.1 % | -0.2 m/s | +0.1 °C |
All twelve months in context

Find a place to stay
Where to stay in Réunion
Compare available stays, prices and cancellation terms for Réunion on Booking.com.
Booking.comFind places to stayAffiliate link: there is no extra cost to you.
Useful next decisions
Frequently asked questions
How warm is Réunion in August?
The average daily high is around 20 °C, with an average daily low of about 17 °C.
Can you swim in Réunion in August?
The sea is about 24 °C (swimmable).
Does it rain a lot in Réunion in August?
The curated estimate is about 12 rainy days per month, not a directly measured long-term average. Total precipitation averages around 39 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. August is not among them.