textproduct: Key West

KEY MESSAGES

- Light and variable winds will become southeast and freshen early this morning.

- A more active weather pattern will develop with higher chances for showers and thunderstorms starting on Tuesday.

- Highest rain chances are expected to occur late Tuesday into Wednesday with a brief lull, followed by another round of higher chances for the end of the week.

DISCUSSION

Issued at 508 AM EDT Mon Aug 3 2026 Showers moving northwest into the offshore Straits of Florida have lulled in strength and frequency as last night turns into this morning. Now, isolated showers are drifting in the northwestern Gulf waters. Temperatures along the island chain are in the mid 80s with dewpoints in the upper 70s making for a muggy early morning. Across the Reef, marine locations are observing light and variable winds. Today, shower development is possible as the winds shift southeasterly allowing for more moisture to be pushed into the area. Due to the southeast winds cloud line development is possible which could result in some waterspout formation.

The pattern will start to shift to become more wet as southeasterly flow brings in more tropical moisture on late Tuesday. Thereafter the ridge will start to build over south Florida. As we sit in between the trough and the ridge on Wenesday we will enter a region where chances of rain will breifly dip from higher PoPs to more average. This will only last one or two periods because another round of higher rain chances return by Friday. By the weekend, things will once again return to more "near normal" for early August with lower chances of showers and thunderstorms.

MARINE

Issued at 508 AM EDT Mon Aug 3 2026 No watches, warnings, or advisories are currently in effect for the Florida Keys waters. From synopsis, light to gentle breezes will continue with some occasional periods of gentle to moderate. In addition, rain chances will also be increasing by Tuesday night as deeper moisture spreads into the region ahead of a frontal boundary approaching northern Florida. As chances for showers and thunderstorms increase, mariners can expect higher winds and seas near this activity.

AVIATION

(06Z TAFS) Issued at 508 AM EDT Mon Aug 3 2026 VFR conditions will prevail at both EYW and MTH through the TAF period. Early morning shower activity will lull until mid afternoon when cloud line development is possible and associated showers from that. Variable and light winds will become southeast to south at near 10 knots by the afternoon. Overnight, another period of variable and light winds is possible.

KEY WATCHES/WARNINGS/ADVISORIES

FL...None. GM...None.