October in Réunion Island marks the beginning of the warm season, with rising temperatures, milder trade winds, and bright days.
You anticipate swimming and hiking, the microclimates dictate the itinerary between dry coasts and high clouds, October weather and contrasting microclimates.
The west coast remains more lenient and dry, while the windy east experiences brief showers under persistent cumulus clouds.
Temperatures climb to 24–29°C during the day, the water hovers around 23–25°C, while the UV requires covering textiles, very high UV.
The end of the dry season still brings beautiful clearings, but the first local storms emerge in the afternoon over the cirques and ramparts.
The cyclone season approaches in November, with a still low risk but vigilance required against early barometric waves.
You plan your luggage and activities according to altitude, priority to adaptability, balancing beaches, volcano, wet forests, and scenic routes.
| Snapshot |
|---|
| • Season: end of dry, beginning of austral spring. More heat, a bit more humidity. |
| • Temperatures: 22–28°C on the coasts; 12–20°C in the Highlands morning/evening. |
| • Rain: brief showers possible in the afternoon. East more humid, West drier. |
| • Wind: moderate trade winds from the southeast; welcome breeze at the seaside and on the ridges. |
| • Sea: possible swell; favor monitored areas and lagoon when it’s calm. |
| • UV: very strong even overcast. Sunglasses, hat, SPF 50+ mandatory. |
| • What to pack: light clothing, anti-mosquito, water bottle, small weather kit (light waterproof). |
| • For the Highlands/volcano: windbreaker and warm layer; hiking shoes. |
| • Activities: beach and lagoon in the morning; hikes early to avoid mist and heat. |
| • Cyclone season: mainly Nov.–Apr.; in October, stay tuned to the weather reports. |
| • Microclimates: weather changes rapidly; check by zone (West/East/South) and keep a Plan B. |
Weather Overview for October
October marks the shift to the warm season, with trade winds still present and timid rain. The coasts show daytime temperatures close to 24 to 28 °C, pleasant for leisurely strolls by the sea. Nights remain mild, often between 17 and 21 °C, especially on the drier and sheltered West. The Indian Ocean gradually warms up, with water around 23 to 24 °C. Afternoons often see evolving clouds, without canceling the abundant morning sunshine.
Coastal and Highland Microclimates
The East on the wind receives more rapid showers, fueled by the trade winds from the southeast. The West under the wind enjoys clearer skies, favorable for relaxation in the protected lagoon. The Highlands remain cooler, sometimes dropping below 15 °C in the early morning on the ridges. The cirques of Mafate, Cilaos, and Salazie gain mist in the afternoons, making morning departures prudent.
Rain, Wind, and Phenomena to Watch
The showers often take the form of brief downpours in the East, with a clearer drying on the West side. The wind picks up around midday, refreshing the atmosphere without making the beach uncomfortable. The official cyclone period starts in November, but an early scenario is still possible, albeit rare. Local warnings are sufficient for adapting a flexible and vibrant program.
The southern swell can still surprise some beaches open to southern swells. The lagoon remains safe for swimming and snorkeling, respecting monitored areas. Currents require caution in the passes, especially during dynamic tides. Coexisting with marine life necessitates swimming in marked and supervised spaces.
Hiking and Volcano
The trails offer remarkable conditions, thanks to moderate humidity and clear mornings. The loops to Mafate and Piton des Neiges gain visibility, with a mostly clear sky before noon. Sun exposure requires a serious cap and sustained hydration on the ridges. The golden light enhances the cirques at dawn, providing spectacular panoramas.
The Piton de la Fournaise remains a majestic, sometimes capricious neighbor, with possible access restrictions. Tourist offices frequently publish updates on the openings of the Enclos. Windy days complicate the ascent, even when the sky seems serene from the coastline. Parking at high altitudes fills up early, especially during the All Saints’ holiday.
UV, Heat, and Mosquitoes
The UV index approaches high values at midday, even under a cloudy veil. Broad-spectrum sunscreen, filtering glasses, and a sturdy hat become essentials. Low and humid areas host a few mosquitoes, especially in the evening near the ravines. A skin repellent and long clothing in the evening reduce discomfort.
What to Pack
A breathable short, a light shirt, and sandals are suitable for the sunny coastline. A compact fleece and a thin waterproof jacket serve for the Highlands and cool dawns. Sturdy hiking shoes are necessary on volcanic rocks and uneven paths. The snorkel mask enhances the coral gardens of the lagoon, to be included without hesitation. October favors morning hikes.
Seasonal Crowding and Budget
The All Saints’ period attracts metropolitan families, with slightly more attendance. The beaches of the West see their parking lots fill up, without a saturated atmosphere or much crowding. Hotels still offer a variety of availability, especially outside extended weekends. Daily life often costs about 10% more than in the mainland, including food.
Road journeys become smoother due to the Route des Tamarins, despite busy time slots. Traffic jams mainly occur around urban areas in the morning and late afternoon. Excursions to the Highlands benefit from early departures to avoid mists and lines. Mornings present the most beautiful weather windows.
Weather Tools and Managing the Unexpected
Local applications provide valuable fine-grained information to anticipate a changing sky. Weather attendance comparisons help, similar to the advice for the Calanques of Marseille. The question of seasonality recalls analyses on Saint-Malo and its tourist rhythm. Réunion’s conditions remain mild in October, without excluding local hazards.
Travel sometimes suffers from hazards outside the tropics, such as disruptions from winter storms in the United States. Cancellation policies vary, hence the importance of careful reading of conditions. An example of a weather alert illustrates the unpredictability of travel outside tropical zones. A flexible schedule remains your best ally.
Activities to Prioritize in October
The lagoons of the West invite swimming, paddleboarding, and snorkeling. Humpback whales still occasionally frequent the coasts at the beginning of the month. The volcanic cavities, lava fields, and tunnels offer a spectacular touch. The markets of Saint-Paul and Saint-Pierre mix flavors, spices, and sun-drenched fruits.
Aviation Transport and Regulatory Framework
As Réunion belongs to the French Republic, European travelers circulate without specific formalities. Ticket prices remain variable, with occasional drops outside major weekends and holidays. Flights approach the island during morning slots favoring internal connections. Coastal buses connect seaside municipalities with a frequency adapted to local usage.
For a Prolonged Stay
Some visitors make the leap after a successful October stay and seek employment. Local offers are listed on Domemploi, Pôle emploi, Clicemploi, and Le Bon Coin. The microclimates even guide residential choices, between bright coastline and temperate Highlands. Families find an extensive school network, from kindergartens to universities, across the island.
