Water Temperature of the Gulf of Mexico in Key West, FL
Current Water Temperature
Measurement Time: Thursday, October 30, 2025, 6:54 PM EDT
Today's Tides
High: October 30, 4:24 AM, 1.97 ft
Low: October 30, 11:33 AM, 0.68 ft
High: October 30, 6:29 PM, 1.52 ft
Low: October 30, 11:07 PM, 1.15 ft
Temperature Locations
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Local Points of Interest
Mallory Square; Tank Island; Florida KeysSponsored Content
Station Name: Key West
Data Source: NOAA Tides and Currents
Elevation Above Sea Level: 13 feet / 4 meters
Sensor Depth: -3.6 feet / -1.1 meters
Nearest Address:
21 Angela St
Key West, FL 33040
Monroe County
GPS Coordinates: 24.55083, -81.80806
Nearby Water Temperatures
Atlantic Ocean, Key West, FL (14.1 mi)Gulf of Mexico, Marathon, FL (45.4 mi)
East Side Creek, Flamingo, FL (61.8 mi)
Joe Kemp Channel, Flamingo, FL (66.5 mi)
Florida Bay, Islamorada, FL (68.4 mi)
Shark River, Flamingo, FL (70.9 mi)
Florida Bay, Islamorada, FL (71.3 mi)
Whitewater Bay, Flamingo, FL (72.0 mi)
Gulf of Mexico, Flamingo, FL (72.6 mi)
Whipray Basin, Islamorada, FL (76.3 mi)
Harney River, Flamingo, FL (76.4 mi)
Florida Bay, Islamorada, FL (78.0 mi)
Seven Palm Lake, Flamingo, FL (80.5 mi)
Broad River, Flamingo, FL (82.1 mi)
Little Madeira Bay, Homestead, FL (85.4 mi)
Weather for Key West, Florida
Current Weather

Humidity: 65%
Feels Like: 82.1°F
Wind: NW 15.9 mph
Wind Gusts: 20.2 mph
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Thu
H: 78°F
L: 75°F

Fri
H: 76°F
L: 73°F

Sat
H: 77°F
L: 73°F

Sun
H: 79°F
L: 77°F

Mon
H: 77°F
L: 75°F
Air Quality
Nitrogen Dioxide: 1.25 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 96 μg/m3
Astronomical
Sun Transit: 1:10 PM
Sunset: 6:49 PM
Daylight: 11 hrs 16 mins
Moon Transit: 8:36 PM
Moonset: 1:21 AM
Moon Phase: First Quarter
Moon Illumination: 63.7%
Best Times for Fishing or Hunting
Major Periods
8:49 AM - 11:19 AM8:06 PM - 10:36 PM
Minor Periods
2:28 PM - 3:58 PM12:51 AM - 2:21 AM
Action Rating: 2 out of 5
Coastal Flood Statement issued October 30 at 10:35AM EDT until October 31 at 5:00AM EDT by NWS Key West FL
Effective: Thu October 30, 2025, 10:35 AM
Expires: Thu October 30, 2025, 6:45 PM
* WHAT...Minor saltwater flooding. * WHERE...Middle Florida Keys. * WHEN...Through late tonight. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater.
Do not drive through flooded roadways.
Coastal Flood Advisory issued October 30 at 10:35AM EDT until October 31 at 5:00AM EDT by NWS Key West FL
Effective: Thu October 30, 2025, 10:35 AM
Expires: Thu October 30, 2025, 6:45 PM
* WHAT...Saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Through late tonight. * IMPACTS...Saltwater flooding of low elevation streets and lots is expected. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles are almost certain to contain a mix of saltwater. Even outside the windows of high tide, little ponding relief can be expected in the Upper Keys.
Do not drive through flooded roadways.
Weather Forecast
Average Temperature: 76°F
Average Humidity: 75%
Wind: 26.2 mph
UV Index: 1.1
Air Quality
Nitrogen Dioxide: 1.15 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 101.92 μg/m3
Astronomical
Sun Transit: 1:10 PM
Sunset: 6:49 PM
Daylight: 11 hrs 16 mins
Moon Transit: 8:36 PM
Moonset: 1:21 AM
Moon Phase: First Quarter
Moon Illumination: 63.7%
Best Times for Fishing or Hunting
Major Periods
8:49 AM - 11:19 AM8:06 PM - 10:36 PM
Minor Periods
2:28 PM - 3:58 PM12:51 AM - 2:21 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 74.3°F
Average Humidity: 74%
Wind: 15.7 mph
UV Index: 1.2
Air Quality
Nitrogen Dioxide: 1.49 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 94.2 μg/m3
Astronomical
Sun Transit: 1:10 PM
Sunset: 6:48 PM
Daylight: 11 hrs 14 mins
Moon Transit: 9:23 PM
Moonset: 2:20 AM
Moon Phase: First Quarter
Moon Illumination: 74.1%
Best Times for Fishing or Hunting
Major Periods
9:37 AM - 12:07 AM8:53 PM - 11:23 PM
Minor Periods
3:03 PM - 4:33 PM1:50 AM - 3:20 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 74.6°F
Average Humidity: 66%
Wind: 15 mph
UV Index: 1.5
Air Quality
Nitrogen Dioxide: 1.92 μg/m3
Sulphur Dioxide: 1.74 μg/m3
Ozone: 104.8 μg/m3
Astronomical
Sun Transit: 1:10 PM
Sunset: 6:47 PM
Daylight: 11 hrs 13 mins
Moon Transit: 12:00 AM
Moonset: 3:19 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 83.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:24 AM - 12:54 AM
Minor Periods
3:38 PM - 5:08 PM2:49 AM - 4:19 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 78.1°F
Average Humidity: 67%
Wind: 15.7 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 2.38 μg/m3
Sulphur Dioxide: 2.07 μg/m3
Ozone: 113.62 μg/m3
Astronomical
Sun Transit: 1:10 PM
Sunset: 6:47 PM
Daylight: 11 hrs 12 mins
Moon Transit: 12:31 AM
Moonset: 4:20 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 90.9%
Best Times for Fishing or Hunting
Major Periods
12:01 AM - 2:31 PM12:01 AM - 2:31 PM
Minor Periods
4:13 PM - 5:43 PM3:50 AM - 5:20 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 77.7°F
Average Humidity: 81%
Wind: 14.5 mph
UV Index: 6
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:10 PM
Sunset: 6:46 PM
Daylight: 11 hrs 11 mins
Moon Transit: 11:50 PM
Moonset: 5:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 96.3%
Best Times for Fishing or Hunting
Major Periods
12:02 AM - 2:32 PM12:00 AM - 12:00 AM
Minor Periods
4:49 PM - 6:19 PM4:52 AM - 6:22 AM
Action Rating: 3 out of 5
