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

Current Water Temperature

Current temperature data is
not available at this time.

Today's Tides

 High: April 20, 1:14 AM, 1.0 ft
Low: April 20, 5:29 AM, 0.4 ft
 High: April 20, 12:16 PM, 2.0 ft
Low: April 20, 7:13 PM, -0.5 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

79°F
Sunny
Sunny
82.3°F
84.4°F
72%
NNE 9.2 mph
12.4 mph
80.3°F
70.8°F
0 in
0%
9 mi
1018 mbar
6.8

Five Day Weather Forecast

Sunny
Mon
H: 82°F
L: 75°F
Moderate rain
Tue
H: 76°F
L: 75°F
Partly Cloudy
Wed
H: 76°F
L: 75°F
Patchy rain nearby
Thu
H: 77°F
L: 75°F
Heavy rain
Fri
H: 74°F
L: 68°F

Air Quality

AQI: 1 - Good
PM2.5: 8.95 μg/m3
PM10: 11.85 μg/m3
Carbon Monoxide: 140.85 μg/m3
Nitrogen Dioxide: 1.35 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 104 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 1:26 PM
Sunset: 7:52 PM
Daylight: 12 hrs 51 mins
Moonrise: 9:22 AM
Moon Transit: 4:34 PM
Moonset: 11:50 PM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

4:40 AM - 7:10 AM
4:04 PM - 6:34 PM

Minor Periods

12:00 AM - 12:00 AM
8:52 AM - 10:22 AM

Action Rating: 3 out of 5

Monday, April 20, 2026

Weather Forecast

Sunny
81.5°F
74.8°F
77.4°F
76%
0 in
0%
0%
13.6 mph
10.8


Air Quality

AQI: 1 - Good
PM2.5: 8.08 μg/m3
PM10: 10.92 μg/m3
Carbon Monoxide: 129.09 μg/m3
Nitrogen Dioxide: 1.66 μg/m3
Sulphur Dioxide: 1.44 μg/m3
Ozone: 88.72 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 1:26 PM
Sunset: 7:52 PM
Daylight: 12 hrs 51 mins
Moonrise: 9:22 AM
Moon Transit: 4:34 PM
Moonset: 11:50 PM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

4:40 AM - 7:10 AM
4:04 PM - 6:34 PM

Minor Periods

12:00 AM - 12:00 AM
8:52 AM - 10:22 AM

Action Rating: 3 out of 5

Tuesday, April 21, 2026

Weather Forecast

Moderate rain
76.3°F
75.4°F
75.9°F
72%
0.2 in
90%
0%
29.8 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 7.17 μg/m3
PM10: 11.15 μg/m3
Carbon Monoxide: 140.65 μg/m3
Nitrogen Dioxide: 1.96 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 113.56 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 1:25 PM
Sunset: 7:52 PM
Daylight: 12 hrs 52 mins
Moonrise: 10:25 AM
Moon Transit: 5:39 PM
Moonset: 12:50 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

5:46 AM - 8:16 AM
5:09 PM - 7:39 PM

Minor Periods

9:55 AM - 11:25 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, April 22, 2026

Weather Forecast

Partly Cloudy
76.1°F
75.1°F
75.6°F
59%
0 in
0%
0%
25.7 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 9.63 μg/m3
PM10: 16.98 μg/m3
Carbon Monoxide: 134.61 μg/m3
Nitrogen Dioxide: 1.25 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 114.28 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 1:25 PM
Sunset: 7:53 PM
Daylight: 12 hrs 53 mins
Moonrise: 11:32 AM
Moon Transit: 6:42 PM
Moonset: 12:53 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

6:49 AM - 9:19 AM
6:12 PM - 8:42 PM

Minor Periods

11:02 AM - 12:32 AM
12:23 AM - 1:53 AM

Action Rating: 3 out of 5

Thursday, April 23, 2026

Weather Forecast

Patchy rain nearby
76.7°F
75.2°F
76°F
65%
0.02 in
85%
0%
21.7 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 9.14 μg/m3
PM10: 14.63 μg/m3
Carbon Monoxide: 131.6 μg/m3
Nitrogen Dioxide: 1.22 μg/m3
Sulphur Dioxide: 1.01 μg/m3
Ozone: 112.12 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 1:25 PM
Sunset: 7:53 PM
Daylight: 12 hrs 55 mins
Moonrise: 12:39 AM
Moon Transit: 7:40 PM
Moonset: 1:48 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

7:50 AM - 10:20 AM
7:10 PM - 9:40 PM

Minor Periods

12:09 AM - 1:39 PM
1:18 AM - 2:48 AM

Action Rating: 2 out of 5

Friday, April 24, 2026

Weather Forecast

Heavy rain
74.3°F
68.4°F
73.3°F
78%
1.41 in
73%
0%
19.7 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 7.73 μg/m3
PM10: 12.14 μg/m3
Carbon Monoxide: 122.76 μg/m3
Nitrogen Dioxide: 1.27 μg/m3
Sulphur Dioxide: 1.06 μg/m3
Ozone: 107 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 1:25 PM
Sunset: 7:53 PM
Daylight: 12 hrs 56 mins
Moonrise: 1:43 PM
Moon Transit: 8:32 PM
Moonset: 2:36 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

8:45 AM - 11:15 AM
8:02 PM - 10:32 PM

Minor Periods

1:13 PM - 2:43 PM
2:06 AM - 3:36 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.

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