Climate & Weather Guide

Climate zones, seasonal temperatures, rainfall patterns, and best travel times in Reunion

Réunion Island, a French overseas department in the Indian Ocean, features a tropical climate with warm temperatures year-round, ranging from 24°C in winter to 30°C in summer. It has two main seasons: a hot, wet summer (December-April) prone to cyclones and heavy rain, especially on the east coast and mountains, and a cooler, drier winter (May-November). Coastal areas remain mild, while highlands experience cooler nights and frost. Classified primarily as tropical monsoon (Am) with some tropical rainforest (Af) zones, the island offers abundant sunshine but high humidity. Annual rainfall varies dramatically from 500mm on the west coast to over 5000mm in the mountains, making it diverse for residents seeking beach life or hiking.[1][3][5]

Summer Average

25-30°C

Winter Average

18-24°C

Climate Types

Tropical monsoon and Tropical rainforest

Annual Rainfall

500-5000 mm

Sunshine Hours

2,000-2,800 hours annually

Average Humidity

70-85%

Regional Climate Variations

Northern Coast

The northern coast, including Saint-Denis, enjoys a mild tropical monsoon climate with daytime highs of 25-30°C year-round. Winters (June-August) see averages around 22-24°C with low rainfall (50-100mm/month), while summers bring 28-30°C and increased rain up to 200mm. Humidity is high but sea breezes provide relief. Ideal for expats preferring urban coastal living with consistent warmth and fewer cyclones than the south.[2][3]

Summer:28-30°C
Winter:20-24°C
Moderate rainfall

Warm, breezy coastal paradise with reliable sunshine and gentle trade winds, perfect for year-round outdoor activities.

Western Coast

The sheltered western coast, drier than other areas, features low rainfall (500-1000mm annually) and stable temperatures of 24-30°C. Summer highs reach 30°C with minimal rain days, while winter dips to 22-25°C. Low humidity relative to windward sides makes it comfortable for residents. Popular for beaches and expat communities seeking less wet weather.[1][4]

Summer:28-30°C
Winter:22-25°C
Low to moderate rainfall

Sunny, dry haven with warm seas and light rains, offering relaxed island living without excessive moisture.

Southern Coast

Windier southern coast around Saint-Pierre has similar temperatures (24-29°C) but more variable weather, with stronger trade winds in winter cooling feels to 20-24°C. Rainfall is moderate (750-1200mm/year), peaking in summer. Residents enjoy vibrant culture but must prepare for gusts and occasional heavy showers.[3][4]

Summer:27-29°C
Winter:19-24°C
Moderate rainfall

Vibrant and breezy with refreshing winds tempering the tropical heat, great for active lifestyles.

Eastern Coast

Exposed to trade winds, the eastern coast receives very high rainfall (2000-4000mm/year), especially in summer with frequent heavy downpours. Temperatures stay warm at 24-29°C, but feel muggy. Lush vegetation thrives here, appealing to nature lovers tolerant of wet conditions.[1][3]

Summer:27-29°C
Winter:20-24°C
Very high rainfall

Lush, rainy tropical escape with dramatic waterfalls and verdant landscapes after showers.

Central Mountains

Highlands like Cilaos and Piton de la Fournaise are cooler, with winter lows to 4°C and daytime 15-20°C, possible frost. Summer warms to 20-25°C but rainfall exceeds 4000mm annually, often as mist or storms. Dramatic microclimates suit hikers and those escaping coastal heat.[3][5]

Summer:20-25°C
Winter:4-20°C
Very high rainfall

Cool, misty mountain retreat with fresh air, variable weather, and stunning volcanic vistas.

Réunion's tropical climate offers eternal summer on coasts with highs of 24-30°C, contrasted by cool, rainy mountains ideal for diverse lifestyles. Expats enjoy year-round warmth and sunshine but should prepare for cyclone season rains and regional rainfall extremes. Its varied zones provide options from dry beaches to misty highlands, appealing to adventure seekers and beach lovers alike.