June 2026 in Jamaica is bringing hot, tropical summer conditions, with average daytime highs ranging from 30°C to 33°C (86°F to 92°F) and warm overnight lows staying around 24°C to 27°C (75°F to 81°F). While the island is seeing plenty of sunshine—averaging about 7 to 8 hours a day—humidity is high, and the standard early-season weather pattern means you can expect occasional, intense afternoon downpours or brief thunderstorms. Perfect for the beach, the sea temperature is sitting at a very warm 28°C (83°F). Saharan dust moving across the region makes for slightly hazy skies and could temporarily puts a lid on the heavier rainfall.