Water Temperature of the Gulf of Mexico in Key West, FL

Current Water Temperature

81.1°F

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

View Nearby Locations     View All Florida Locations     View Locations Near Me

Local Points of Interest

Mallory Square; Tank Island; Florida Keys

Sponsored Content

Gulf of Mexico

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

79°F
Partly cloudy
Conditions: Partly cloudy
Humidity: 65%
Feels Like: 82.1°F
Wind: NW 15.9 mph
Wind Gusts: 20.2 mph
Pressure: 29.89 in
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Patchy rain nearby
Thu
H: 78°F
L: 75°F
Partly Cloudy
Fri
H: 76°F
L: 73°F
Partly Cloudy
Sat
H: 77°F
L: 73°F
Partly Cloudy
Sun
H: 79°F
L: 77°F
Moderate rain
Mon
H: 77°F
L: 75°F

Air Quality

PM2.5: 9.55 μg/m3
PM10: 13.75 μg/m3
Carbon Monoxide: 143.85 μg/m3
Nitrogen Dioxide: 1.25 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 96 μg/m3

Astronomical

Sunrise: 7:33 AM
Sun Transit: 1:10 PM
Sunset: 6:49 PM
Daylight: 11 hrs 16 mins
Moonrise: 2:58 PM
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 AM
8:06 PM - 10:36 PM

Minor Periods

2:28 PM - 3:58 PM
12:51 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.
Thursday, October 30, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 76°F
Average Humidity: 75%
Chance of Rain: 80%
Wind: 26.2 mph
UV Index: 1.1

Air Quality

AQI: 1 - Good
PM2.5: 9.11 μg/m3
PM10: 13.37 μg/m3
Carbon Monoxide: 124.21 μg/m3
Nitrogen Dioxide: 1.15 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 101.92 μg/m3

Astronomical

Sunrise: 7:33 AM
Sun Transit: 1:10 PM
Sunset: 6:49 PM
Daylight: 11 hrs 16 mins
Moonrise: 2:58 PM
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 AM
8:06 PM - 10:36 PM

Minor Periods

2:28 PM - 3:58 PM
12:51 AM - 2:21 AM

Action Rating: 2 out of 5

Friday, October 31, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 74.3°F
Average Humidity: 74%
Chance of Rain: 0%
Wind: 15.7 mph
UV Index: 1.2

Air Quality

AQI: 1 - Good
PM2.5: 7.82 μg/m3
PM10: 11.08 μg/m3
Carbon Monoxide: 146.45 μg/m3
Nitrogen Dioxide: 1.49 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 94.2 μg/m3

Astronomical

Sunrise: 7:34 AM
Sun Transit: 1:10 PM
Sunset: 6:48 PM
Daylight: 11 hrs 14 mins
Moonrise: 3:33 PM
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 AM
8:53 PM - 11:23 PM

Minor Periods

3:03 PM - 4:33 PM
1:50 AM - 3:20 AM

Action Rating: 2 out of 5

Saturday, November 1, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 74.6°F
Average Humidity: 66%
Chance of Rain: 0%
Wind: 15 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 7.86 μg/m3
PM10: 10.43 μg/m3
Carbon Monoxide: 140.09 μg/m3
Nitrogen Dioxide: 1.92 μg/m3
Sulphur Dioxide: 1.74 μg/m3
Ozone: 104.8 μg/m3

Astronomical

Sunrise: 7:34 AM
Sun Transit: 1:10 PM
Sunset: 6:47 PM
Daylight: 11 hrs 13 mins
Moonrise: 4:08 PM
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 AM
10:24 AM - 12:54 AM

Minor Periods

3:38 PM - 5:08 PM
2:49 AM - 4:19 AM

Action Rating: 2 out of 5

Sunday, November 2, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 78.1°F
Average Humidity: 67%
Chance of Rain: 0%
Wind: 15.7 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 9.14 μg/m3
PM10: 12 μg/m3
Carbon Monoxide: 146.62 μg/m3
Nitrogen Dioxide: 2.38 μg/m3
Sulphur Dioxide: 2.07 μg/m3
Ozone: 113.62 μg/m3

Astronomical

Sunrise: 7:35 AM
Sun Transit: 1:10 PM
Sunset: 6:47 PM
Daylight: 11 hrs 12 mins
Moonrise: 4:43 PM
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 PM
12:01 AM - 2:31 PM

Minor Periods

4:13 PM - 5:43 PM
3:50 AM - 5:20 AM

Action Rating: 2 out of 5

Monday, November 3, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 77.7°F
Average Humidity: 81%
Chance of Rain: 80%
Wind: 14.5 mph
UV Index: 6

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:35 AM
Sun Transit: 1:10 PM
Sunset: 6:46 PM
Daylight: 11 hrs 11 mins
Moonrise: 5:19 PM
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 PM
12:00 AM - 12:00 AM

Minor Periods

4:49 PM - 6:19 PM
4:52 AM - 6:22 AM

Action Rating: 3 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

Webcams Near Key West, FL

Sponsored Content