NWS Key West

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Last Map Update: Wed, Dec 31, 2025 at 2:08:43 pm EST

Watches, Warnings & Advisories

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National Weather Service Tampa Bay Area, FL

National Weather Service Miami - South Florida

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Frost Advisory

Cold Temperatures Continue

Island Chain

Marine Winds

Wave Heights

Colder temperatures persist, with New Year's Eve highs remaining in the mid 60s, and overnight lows dipping below 50° in the Upper Keys, and into the mid to upper 50s elsewhere in the Keys. as we enter 2026. Below-normal temperatures will continue while gradually moderating back to near-normal this weekend.

UPPER KEYS: Today... Mostly sunny. Breezy in the morning. Highs in the mid 60s. Northwest to north winds 15 to 20 mph, decreasing to 10 to 15 mph. LOWER & MIDDLE KEYS: Today... Mostly sunny. Breezy in the morning. Highs in the mid 60s. North winds 15 to 20 mph in the morning, becoming northwest to north near 15 mph.

SMALL CRAFT ADVISORY IN EFFECT FOR ALL KEYS COASTAL WATERS! Today... Fresh NW-N breezes, becoming moderate (Florida Bay, moderate to fresh NW-N breezes becoming gentle to moderate). Seas 2-4 ft in nearshore waters. Seas 4-5 ft west of Cosgrove Shoal Light and the Marquesas Keys, and the deep Gulf, subsiding to 3-4 ft. Seas 4-6 ft in the Florida Straits, subsiding to 3-5 ft. Bay and nearshore waters rough, becoming a moderate chop.

SMALL CRAFT ADVISORY IN EFFECT FOR ALL KEYS COASTAL WATERS! Today... Fresh NW-N breezes, becoming moderate (Florida Bay, moderate to fresh NW-N breezes becoming gentle to moderate). Seas 2-4 ft in nearshore waters. Seas 4-5 ft west of Cosgrove Shoal Light and the Marquesas Keys, and the deep Gulf, subsiding to 3-4 ft. Seas 4-6 ft in the Florida Straits, subsiding to 3-5 ft. Bay and nearshore waters rough, becoming a moderate chop.