Why Seychelles rewards careful timing.
Seychelles sits at 4°S latitude, well within the equatorial belt, and outside the cyclone trajectory that affects Mauritius and Madagascar. Temperatures stay 24–32°C year-round; what changes seasonally is wind, rain, and sea conditions.
Northwest Monsoon (November–April) brings warmer, wetter, calmer weather. Daytime 28–32°C, nights 24–26°C, sea 27–29°C. Afternoon thunderstorms typical, especially December–February. Calmer seas on the east and south coasts during this period (the windward sides during Southeast Trades). December–February sees heaviest rains.
Southeast Trades (May–October) bring cooler, drier, windier weather. Daytime 25–28°C, nights 22–24°C, sea 25–27°C. Strong southeast trade winds make some east-coast beaches breezier and choppier; calmer on the west and north coasts during this period (the leeward sides). Best for outdoor activities, hiking the granite peaks, beach lounging on sheltered coasts, sailing.
The transition months (April–May and October–November) are consensus the best windows, winds drop, sea is calm on all coasts, visibility is at peak for diving (30m+ underwater), and the famous beaches are at picture-perfect conditions. April–May specifically is the year's best window, calm, warm, sunny, good diving, lower than peak prices.
Diving and snorkeling is year-round but visibility peaks April–May and October–November (calm transition periods). Whale shark season at Mahé runs August–October, one of the world's most reliable encounters with these gentle giants. Marine turtle nesting runs October–February (both Hawksbill and Green turtles); hatchlings emerge January–April.
Where you stay matters more than when you visit, given the wind direction shift. Mahé (the main island) has resorts on multiple coasts, west and north coast resorts (Beau Vallon, Bel Ombre, Glacis) are best in May–October; east and south coast resorts (Pointe au Sel, Takamaka, Anse Royale) are best in November–April. La Digue and Praslin are smaller and have less coastal differentiation.
Hurricane and cyclone risk is essentially nil, Seychelles is north of the cyclone belt. The country occasionally experiences cyclone-edge weather but never direct landfall.
Holidays affecting travel: Independence Day (June 18), National Day (June 29), Constitution Day (June 18 and 29 are clustered), Eid al-Fitr (March 19–20, 2026), Christmas–New Year's, All Saints' Day (November 1), Easter (April 5 in 2026).
Currency: Seychelles Rupee (SCR), roughly 15 SCR = $1 USD in 2026. EUR universally accepted at hotels, restaurants, taxis (often with prices in EUR). USD also accepted but EUR is the more common alternative currency. Card acceptance at major hotels and restaurants; cash for smaller establishments and tips. ATMs in Victoria (capital) and at major hotels.