Today's Forecast
Updated: 18 September 2026 | 6:00 a.m.
SYNOPSIS:
Moisture and instability across the Cayman area will progressively increase throughout today as a tropical wave begins to approach the western Caribbean and interacts with an upper-level trough. From late this afternoon, cloudier conditions are expected as the wave begins to enter the region, with a round of showers and isolated thunderstorms possible early this evening. Radar imagery shows scattered thunderstorm activity 100 miles southeast of the Cayman area which is moving towards the west-northwest.
FORECAST:
Today: Partly cloudy skies becoming cloudy later with a 40% chance of showers and some thunder from the late-afternoon. Showers may become locally heavy at times. Temperatures will rise near the low 90's °F, with a heat index of 107 °F. Winds will be east to northeast at 5 to 10 knots. Seas will be slight with wave heights of 1 to 3 feet.
Tomorrow: Cloudy skies with a 60% chance of showers and some thunder in the early morning. Showers may become locally heavy at times. Temperatures will fall near the low 80s °F. Winds will be easterly at 5 knots or less, becoming light and variable at times and with higher gusts in and around showers. Seas will be slight with wave heights of 1 to 3 feet.
TIDES:
Today: Low 9:23 a.m. High 5:43 p.m.
Tomorrow: Low 12:04 a.m. High 4:32 a.m. Low 10:50 a.m. High 6:16 p.m.
SUNSET: 6:24 p.m. Today. SUNRISE: 6:14 a.m. Tomorrow.
OUTLOOK:
is for a continued deterioration in weather conditions through Saturday as the tropical wave continues to drift over the western Caribbean. Scattered to numerous showers are expected throughout the day as winds remain light and occasionally variable.
Forecaster
Harding