Sun 21 September 2025

TROPICAL REPORT

Atlantic Tropical Weather Outlook

Atlantic – Caribbean Sea – Gulf of Mexico
Tropical Weather Outlook  800 AM EDT Sun 21 Sep 2025 1205 UTC Sun 21 Sep 2025
IMAGE FROM NHC

Tropical Weather Outlook Text

Tropical Weather Discussion

Tropical Storm Gabrielle

GABRIELLE POISED TO BECOME A HURRICANE LATER TODAY

Eastern North Pacific (East of 140°W)
Tropical Weather Outlook  500 AM PDT Sun 21 Sep 2025 1005 UTC Sun 21 Sep 2025
IMAGES FROM NHC

Tropical Weather Outlook Text

Tropical Weather Discussion

NOAA Climate Prediction Center

Weather in Cayman

SYNOPSIS

Some scattered showers and thunderstorms are likely today as a tropical wave south of the Cayman area interacts with an upper-level low. A gradual decrease in cloudiness and showers are expected through Monday as this wave moves west.

Day: WU/TWC forecast: A few showers this morning with numerous thunderstorms developing during the afternoon hours. Winds Light & variable.

Night:  WU/TWC forecast:  Some clouds. Winds Light & variable.

Chance of rain: 80%.

Sea: Smooth with a wave height of fewer than 2 feet.

Humidity:75%

UV: 9 VERY HIGH (Down from yesterday). Daily Max at 11 AM

Very High: 8-10

Extra precaution required – unprotected skin will be damaged and can burn quickly. Avoid the sun between 11 a.m. and 3 p.m. and seek shade, cover up, and wear a hat, sunglasses and sunscreen.

Expected temperatures: 80°F to 88°F. Yesterday: H 91.0°F  L 80.6°F

Barometer: 1014 mb

Rain: Last month: 5.04 in

Rain this month 4.62 in
Last 24 hrs (since yesterday’s readings) 0.80 in. 0 days since rain, 9 rain days in Sep
2025 Season Total: 24.38 in 
2024 Season Total: 70.35 in
Latest rainfall readings are from HALF WAY POND.
Average rainfall in Sep: 8.8 in.
Average temperature in Sep: 80°F to 92°F
Sea Temperature in Sep: 86°F

MOON: 0% Illumination

NEW MOON

LOCAL 6 DAY FORECAST

Grand Cayman Sun & Tides Tables September 2025

From Tides4fishing

IMPORTANT NOTICEThe times reflected in the tidal table for Grand Cayman are predictions valid as references for sports fishing in areas near the coast of Grand Cayman. THEY ARE NOT SUITABLE FOR NAVIGATION. Remember that to practice any activity at sea like diving, windsurfing and fishing from a boat or underwater fishing should always be consulted with the official tide tables of the port of Grand Cayman.

See: http://www.weather.gov.ky/portal/page?_
FOR RADAR IMAGE GO TO: https://www.weather.gov.ky/radar
Also see Weather In Cayman: http://www.weatherincayman.com
Moon info and graphic: https://www.timeanddate.com/moon/phases/uk/georgetow

Tropical storm data and graphics from National Hurricane Center at: https://www.nhc.noaa.gov/
Weathernerds: http:// https://www.weathernerds.org/
Mikes Weather Page: http://www.spaghettimodels.com