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

Current Water Temperature

77.4°F

Measurement Time: Thursday, November 6, 2025, 10:06 PM EST

Today's Tides

Low: November 6, 3:46 AM, -0.21 ft
 High: November 6, 10:42 AM, 1.66 ft
Low: November 6, 3:11 PM, 0.77 ft
 High: November 6, 9:49 PM, 2.60 ft

Temperature Locations

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Local Points of Interest

Mallory Square; Tank Island; Florida Keys

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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

77.7°F
Clear
Conditions: Clear
Humidity: 90%
Feels Like: 82.5°F
Wind: ENE 14.3 mph
Wind Gusts: 19.1 mph
Pressure: 30.02 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Thu
H: 82°F
L: 76°F
Overcast
Fri
H: 80°F
L: 76°F
Mist
Sat
H: 74°F
L: 73°F
Overcast
Sun
H: 77°F
L: 74°F
Patchy rain nearby
Mon
H: 78°F
L: 69°F

Air Quality

AQI: 1 - Good
PM2.5: 9.45 μg/m3
PM10: 13.75 μg/m3
Carbon Monoxide: 113.85 μg/m3
Nitrogen Dioxide: 1.45 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 99 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:10 AM
Sunset: 5:44 PM
Daylight: 11 hrs 6 mins
Moonrise: 6:40 PM
Moon Transit: 12:45 AM
Moonset: 7:50 AM
Moon Phase: Full
Moon Illumination: 97.9%

Best Times for Fishing or Hunting

Major Periods

12:15 AM - 2:45 AM
1:55 PM - 4:25 PM

Minor Periods

6:10 PM - 7:40 PM
7:20 AM - 8:50 AM

Action Rating: 4 out of 5

Coastal Flood Statement issued November 6 at 3:55PM EST until November 7 at 5:00AM EST by NWS Key West FL

Effective: Thu November 6, 2025, 3:55 PM
Expires: Fri November 7, 2025, 12:00 AM

* WHAT...Minor saltwater flooding expected. * WHERE...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.
Thursday, November 6, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 78°F
Average Humidity: 82%
Chance of Rain: 0%
Wind: 16.1 mph
UV Index: 1.2

Air Quality

AQI: 1 - Good
PM2.5: 9.21 μg/m3
PM10: 13.27 μg/m3
Carbon Monoxide: 118.17 μg/m3
Nitrogen Dioxide: 1.68 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 104.4 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:10 AM
Sunset: 5:44 PM
Daylight: 11 hrs 6 mins
Moonrise: 6:40 PM
Moon Transit: 12:45 AM
Moonset: 7:50 AM
Moon Phase: Full
Moon Illumination: 97.9%

Best Times for Fishing or Hunting

Major Periods

12:15 AM - 2:45 AM
1:55 PM - 4:25 PM

Minor Periods

6:10 PM - 7:40 PM
7:20 AM - 8:50 AM

Action Rating: 4 out of 5

Friday, November 7, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 77.9°F
Average Humidity: 86%
Chance of Rain: 0%
Wind: 15.9 mph
UV Index: 0.7

Air Quality

AQI: 1 - Good
PM2.5: 7.85 μg/m3
PM10: 11.23 μg/m3
Carbon Monoxide: 113.53 μg/m3
Nitrogen Dioxide: 1.46 μg/m3
Sulphur Dioxide: 1.26 μg/m3
Ozone: 97.32 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:10 AM
Sunset: 5:43 PM
Daylight: 11 hrs 5 mins
Moonrise: 7:40 PM
Moon Transit: 1:49 AM
Moonset: 9:03 AM
Moon Phase: Full
Moon Illumination: 93.4%

Best Times for Fishing or Hunting

Major Periods

1:19 AM - 3:49 AM
3:01 PM - 5:31 PM

Minor Periods

7:10 PM - 8:40 PM
8:33 AM - 10:03 AM

Action Rating: 4 out of 5

Saturday, November 8, 2025

Weather Forecast

Conditions: Mist
Average Temperature: 74°F
Average Humidity: 95%
Chance of Rain: 0%
Wind: 8.7 mph
UV Index: 1.4

Air Quality

AQI: 1 - Good
PM2.5: 4.3 μg/m3
PM10: 6.01 μg/m3
Carbon Monoxide: 111.45 μg/m3
Nitrogen Dioxide: 1.59 μg/m3
Sulphur Dioxide: 1.3 μg/m3
Ozone: 73.72 μg/m3

Astronomical

Sunrise: 6:39 AM
Sun Transit: 12:11 AM
Sunset: 5:43 PM
Daylight: 11 hrs 4 mins
Moonrise: 8:47 PM
Moon Transit: 2:55 AM
Moonset: 10:11 AM
Moon Phase: Waning Gibbous
Moon Illumination: 86.7%

Best Times for Fishing or Hunting

Major Periods

2:25 AM - 4:55 AM
4:07 PM - 6:37 PM

Minor Periods

8:17 PM - 9:47 PM
9:41 AM - 11:11 AM

Action Rating: 2 out of 5

Sunday, November 9, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 76.2°F
Average Humidity: 95%
Chance of Rain: 0%
Wind: 7.8 mph
UV Index: 1.4

Air Quality

AQI: 1 - Good
PM2.5: 4.21 μg/m3
PM10: 5.79 μg/m3
Carbon Monoxide: 113.61 μg/m3
Nitrogen Dioxide: 1.77 μg/m3
Sulphur Dioxide: 1.47 μg/m3
Ozone: 63.44 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:11 AM
Sunset: 5:42 PM
Daylight: 11 hrs 3 mins
Moonrise: 9:54 PM
Moon Transit: 4:00 AM
Moonset: 11:12 AM
Moon Phase: Waning Gibbous
Moon Illumination: 78.1%

Best Times for Fishing or Hunting

Major Periods

3:30 AM - 6:00 AM
5:10 PM - 7:40 PM

Minor Periods

9:24 PM - 10:54 PM
10:42 AM - 12:12 AM

Action Rating: 2 out of 5

Monday, November 10, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 75.3°F
Average Humidity: 80%
Chance of Rain: 88%
Wind: 31.8 mph
UV Index: 1.2

Air Quality

AQI: 1 - Good
PM2.5: 4.37 μg/m3
PM10: 5.82 μg/m3
Carbon Monoxide: 108.39 μg/m3
Nitrogen Dioxide: 2.02 μg/m3
Sulphur Dioxide: 2.24 μg/m3
Ozone: 70.08 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:11 AM
Sunset: 5:42 PM
Daylight: 11 hrs 2 mins
Moonrise: 11:00 PM
Moon Transit: 5:01 AM
Moonset: 12:04 AM
Moon Phase: Waning Gibbous
Moon Illumination: 68.0%

Best Times for Fishing or Hunting

Major Periods

4:31 AM - 7:01 AM
6:07 PM - 8:37 PM

Minor Periods

10:30 PM - 12:00 PM
11:34 AM - 1:04 PM

Action Rating: 4 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.

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