Temperature
Hot by day, warm at night.
89°Ftypical Aug high
Key West is most comfortable in the drier months around January to March. Typical daytime highs run about 79-89°F year-round. The climate is hot and humid. Rainy season runs roughly May to October.

Hot by day, warm at night.
One of the wettest months.
Cloudier spells limit sunshine.
Warm days, with some hot afternoons and occasional humid spells.
Partly cloudy across the month.
Want a side-by-side climate view? Compare Key West with Denpasar / Bali.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 4, 2026
Data & methodology