The best time to visit Grande-Terre is December through April — the dry season (Carême), when trade winds keep temperatures comfortable, rainfall is low, and the beaches are at their most inviting. This is also peak tourist season, so hotels fill up and prices rise.
May through November is the rainy season (hivernage), with the peak of the Atlantic hurricane season falling between August and October. Guadeloupe can receive direct hits from hurricanes — the island was badly damaged by Maria in 2017 — and the risk is real in September and October. Outside of peak storm months, the rainy season is not a washout: showers tend to be short and intense, humidity rises, and the island is noticeably greener. Hotels are cheaper and the island is quieter.
Carnival (Mardi Gras) is the most spectacular cultural event of the year, running from January through Ash Wednesday with parades, music, and costumes that reflect the island's Creole heritage. It peaks in the days immediately before Ash Wednesday and is worth planning around. Bastille Day (July 14) and local fêtes patronales (saints' days) bring their own celebrations throughout the year.
Average temperatures hold steady between 24°C (75°F) and 30°C (86°F) year-round. The sea temperature rarely drops below 26°C.