Reunion Island in August: weather, things to do and tips for 2026
August is the heart of the southern winter and the very peak of humpback whale season: glorious weather, clear skies, superb mountain hikes. It's also the busiest month of the year, so book 3 to 6 months ahead.
Statistically, August is the best month for humpback whale watching in Reunion Island, with an 85 to 95% success rate on trips from Saint-Gilles. Expect whale song, acrobatic breaches, tail slaps and mothers with calves. The Quiétude observation charter is compulsory for all operators. Book 3-4 weeks ahead.
August in Reunion Island is the island at its most spectacular. Clear skies, brilliant light, strong trade winds, perfectly dry trails and views that stretch for 100 km. The sea stays at 24°C (chilly for the Indian Ocean) but the lagoon still offers a pleasant swim. The Hauts get properly cold: 0 to 6°C at sunrise at Piton des Neiges, occasional snow above 2,500 m in some years.
It's also the busiest month of the year. The French summer holidays, Reunion Island's school holidays, the 15 August public holiday: everything comes together. Flight prices 50 to 100% higher than in May-June, hotels fully booked, Mafate gîtes full, the helicopter needs booking 6 weeks ahead. The island is at its most festive and photogenic, as long as you plan ahead.
A month of Creole festivals, processions and 15 August family picnics on the west coast beaches.
August in Reunion Island in 3 cards
- The very peak of humpback whale season (85-95%)
- Clear skies and brilliant light
- Piton des Neiges at its best
- Mafate at its busiest
- Creole festivals and events
- The highest prices of the year
- Book 3-6 months ahead
- Very strong trade winds in the afternoon
- Cold nights in the mountains (0-6°C)
- A chilly sea
- Whale enthusiasts (peak season)
- Hikers taking on the big routes
- Families during school holidays
- Photographers (unique light)
- Travellers who booked early
August's climate at a glance
Météo France data (1991-2020 averages) for the west coast. August is one of the 3 driest, most stable months of the year, with the trade winds at their peak.
night min: 16-19°C
chilly for swimming
2 to 5 rainy days
clear skies
A typical day in August
Clear sky, calm sea, light trade winds. The best time for whale trips, helicopter flights and mountain hikes.
Sun high. Lagoon swimming (chilly but pleasant), diving in Saint-Leu, snorkelling.
Trade winds at their strongest (40-60 km/h), waves on the south-east coast. The west coast stays sheltered, in brilliant light.
Stunning sunsets from Saint-Leu and Maïdo. A very cool night, and countless stars in the mountains.
August compared with May and September
Compared with May (start of the dry season, low prices) and September (the driest, most popular month).
August is very close to September weather-wise, but with the year's maximum prices and maximum crowds. For the full calendar, see when to go to Reunion Island.
The year's biggest temperature gap
In August, the west coast and the Hauts feel like different worlds: 25°C by day in Saint-Gilles against 3°C at the Caverne Dufour gîte. Pack for where you're staying.
Purple and orange skies from the Hauts or the west coast, in the clear light brought by the trade winds.
What to do in Reunion Island in August?
August is the number-one month for humpback whales. Whale watching from Saint-Gilles has an 85 to 95% success rate, with whale song, spectacular breaches and mothers with calves. Swimming with whales and dolphins is the month's most memorable experience (strictly following the Quiétude code of conduct).
On land, the big hikes are at their best. A guided Mafate crossing (3-5 days staying in gîtes), the sunrise climb up Piton des Neiges (clear 95% of the time), the Piton de la Fournaise and Trou de Fer from Bélouve are all at their best.
For views from the air, August offers the most spectacular skies: the helicopter and tandem paragliding in Saint-Leu need booking 4 to 6 weeks ahead. For thrills, the Fleur Jaune canyon in Cilaos is fully open. The month is also livened up by Creole festivals and 15 August family picnics.
The 6 activities to prioritise in August
A selection built around peak whale season and the big hikes. The same listings as in the activity search.
Whales & dolphins5 optionsWhales and Dolphins in Saint-Gilles: 4 Packages
Prices for whale and dolphin watching trips from Saint-Gilles. 4 boat packages from €37 with Manawa partners. Humpback whales from July to October, dolphins year-round.
Whales & dolphins5 optionsMost reviewedDolphin Swim in Saint-Gilles: 3 Packages to Choose From
Swimming with dolphins and whales in fins, mask and snorkel at Saint-Gilles. 3 packages from €40 with a guided swim and a respected cetacean approach charter.
Helicopter6 optionsHelicopter Flights Over Reunion Island: Prices
9 helicopter flight options over Reunion Island from €204: volcano, cirques, waterfalls. Prices, operators and honest advice.
Guided hike4 optionsGuided Hike in Mafate, Reunion Island: Level, Packages, Prices
Guided hiking in the Mafate cirque from €55. Several packages (from Maïdo, Cayenne or an authentic immersion). 4.9/5 from 18 Manawa reviews.
Canyoning5 optionsFleur Jaune Canyoning, Cilaos
Canyoning at Fleur Jaune (Cilaos), Reunion Island. 4 packages from €65, Mini, classic or full route. With CilaosAventure and my partners.
Paragliding5 optionsParagliding at Saint-Leu: 3 Packages, Prices
Paragliding in Reunion Island at Saint-Leu, one of the three best spots in the world for it. 2 packages from €110, 97 verified Manawa reviews.
Perfectly dry trails, clear skies, freezing nights. The month for the big routes.
Where to stay in Reunion Island in August?
The Saint-Gilles seaside resort is the most practical base for whale trips. L'Ermitage, La Saline and Saint-Leu for the lagoon and sunsets. Mountain gîtes (Mafate, Cilaos, Hell-Bourg, Plaine des Cafres) are a must for a hiking trip, but book up fast.
Booking 3 to 6 months ahead is essential in August. Upmarket: upmarket hotels in Reunion Island. On a budget (if anything is left): 10 cheap ways to stay (hostels, house swaps).
Avoid in August:arriving without a booking. Hotels are booked up 3 months ahead, the Mafate gîtes are full, whale trips book up 3-4 weeks ahead, the helicopter 4-6 weeks and the Fleur Jaune canyon 2-3 weeks. Planning ahead is a must. Leave the car to the last minute and you'll be choosing from whatever is left: reserve your rental car when you book the accommodation.
How much does a trip to Reunion Island cost in August?
| Item | August 2027 price (school holidays) | vs May (reference) |
|---|---|---|
| Return flight Paris-Reunion Island | €1,200-1,600 | +80-110% |
| 3-star hotel (per night) | €150-220 | +80-100% |
| Car hire (per day) | €50-75 | +60% |
| Whale watching / catamaran trip | €60-95 | stable |
| Mafate gîte (with meals) | €25-40 | stable |
For a 10-day trip in August from mainland France, allow €2,800-3,800 per person all in. The same trip in May-June costs €1,500-2,200, September costs €2,000-2,600.
Reunion Island in August: your questions answered
What's the weather like in Reunion Island in August?
What is there to do in Reunion Island in August?
Can I see whales in Reunion Island in August?
Is August a good time to visit Reunion Island?
What events are on in Reunion Island in August?
Can I swim in Reunion Island in August?
How much does a trip to Reunion Island cost in August?
Can I climb Piton des Neiges in August?
Is August a good time to visit Reunion Island?
Yes, for peak humpback whale season, glorious weather and mountain hikes at their best. It's the best month of all for the experience, as long as you plan ahead.
That said, it takes more planning than any other month: book 3 to 6 months ahead and expect prices 80 to 110% higher than in May-June. If you're not tied to school holidays, go in September for almost the same experience for less.