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

Current Water Temperature

73.6°F

Measurement Time: Tuesday, February 17, 2026, 1:06 AM EST

Today's Tides

Low: February 17, 3:40 AM, -0.3 ft
 High: February 17, 10:11 AM, 1.1 ft
Low: February 17, 3:18 PM, 0.0 ft
 High: February 17, 10:04 PM, 1.6 ft

Temperature Locations

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Local Points of Interest

Mallory Square; Tank Island; Florida Keys

Gulf of Mexico

Station Name: Key West
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 13 feet

Sensor Depth: -4 feet

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 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 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

66.9°F
Partly Cloudy
Partly Cloudy
66.9°F
66.3°F
84%
N 14.3 mph
19 mph
66.2°F
61.4°F
0 in
25%
9 mi
1019 mbar
0

Five Day Weather Forecast

Partly Cloudy
Tue
H: 72°F
L: 66°F
Partly Cloudy
Wed
H: 71°F
L: 69°F
Fog
Thu
H: 70°F
L: 68°F
Sunny
Fri
H: 74°F
L: 67°F
Partly Cloudy
Sat
H: 75°F
L: 73°F

Air Quality

PM2.5: 9.35 μg/m3
PM10: 11.75 μg/m3
Carbon Monoxide: 153.85 μg/m3
Nitrogen Dioxide: 4.85 μg/m3
Sulphur Dioxide: 2.35 μg/m3
Ozone: 77 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:41 AM
Sunset: 6:23 PM
Daylight: 11 hrs 24 mins
Moonrise: 7:07 AM
Moon Transit: 12:53 AM
Moonset: 6:46 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:07 AM - 3:37 AM
12:23 AM - 2:53 PM

Minor Periods

6:16 PM - 7:46 PM
6:37 AM - 8:07 AM

Action Rating: 5 out of 5

Tuesday, February 17, 2026

Weather Forecast

Partly Cloudy
72.1°F
65.5°F
69°F
87%
0 in
0%
0%
14.3 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 9.68 μg/m3
PM10: 13.1 μg/m3
Carbon Monoxide: 142.05 μg/m3
Nitrogen Dioxide: 2.46 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 92.36 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:41 AM
Sunset: 6:23 PM
Daylight: 11 hrs 24 mins
Moonrise: 7:07 AM
Moon Transit: 12:53 AM
Moonset: 6:46 PM
Moon Phase: New
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

1:07 AM - 3:37 AM
12:23 AM - 2:53 PM

Minor Periods

6:16 PM - 7:46 PM
6:37 AM - 8:07 AM

Action Rating: 5 out of 5

Wednesday, February 18, 2026

Weather Forecast

Partly Cloudy
71.2°F
69.1°F
70.4°F
94%
0 in
0%
0%
12.8 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 8.02 μg/m3
PM10: 11.45 μg/m3
Carbon Monoxide: 132.21 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 99.76 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 12:41 AM
Sunset: 6:24 PM
Daylight: 11 hrs 25 mins
Moonrise: 7:41 AM
Moon Transit: 1:39 PM
Moonset: 7:43 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

1:53 AM - 4:23 AM
1:09 PM - 3:39 PM

Minor Periods

7:13 PM - 8:43 PM
7:11 AM - 8:41 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Fog
70.2°F
68°F
69.1°F
97%
0 in
0%
0%
10.5 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 7.81 μg/m3
PM10: 11.02 μg/m3
Carbon Monoxide: 124.99 μg/m3
Nitrogen Dioxide: 1.7 μg/m3
Sulphur Dioxide: 1.33 μg/m3
Ozone: 95.56 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 12:41 AM
Sunset: 6:25 PM
Daylight: 11 hrs 27 mins
Moonrise: 8:14 AM
Moon Transit: 4:07 PM
Moonset: 8:42 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

3:37 PM - 6:07 PM
3:37 PM - 6:07 PM

Minor Periods

8:12 PM - 9:42 PM
7:44 AM - 9:14 AM

Action Rating: 4 out of 5

Friday, February 20, 2026

Weather Forecast

Sunny
74.2°F
67.3°F
72.6°F
83%
0 in
0%
0%
14.3 mph
1.8


Air Quality

AQI: 1 - Good
PM2.5: 9.5 μg/m3
PM10: 12.96 μg/m3
Carbon Monoxide: 129.75 μg/m3
Nitrogen Dioxide: 2.26 μg/m3
Sulphur Dioxide: 1.56 μg/m3
Ozone: 90.46 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 12:40 AM
Sunset: 6:25 PM
Daylight: 11 hrs 28 mins
Moonrise: 8:48 AM
Moon Transit: 3:11 PM
Moonset: 9:42 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:41 PM - 5:11 PM

Minor Periods

9:12 PM - 10:42 PM
8:18 AM - 9:48 AM

Action Rating: 2 out of 5

Saturday, February 21, 2026

Weather Forecast

Partly Cloudy
74.7°F
73.4°F
73.8°F
85%
0 in
0%
0%
13.6 mph
0


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: 6:57 AM
Sun Transit: 12:40 AM
Sunset: 6:26 PM
Daylight: 11 hrs 29 mins
Moonrise: 9:23 AM
Moon Transit: 4:00 PM
Moonset: 10:44 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.4%

Best Times for Fishing or Hunting

Major Periods

4:13 AM - 6:43 AM
3:30 PM - 6:00 PM

Minor Periods

10:14 PM - 11:44 PM
8:53 AM - 10:23 AM

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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