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

Current Water Temperature

87.4°F

Measurement Time: Friday, May 15, 2026, 3:48 AM EDT

Today's Tides

Low: May 15, 2:21 AM, 0.4 ft
 High: May 15, 8:54 AM, 1.9 ft
Low: May 15, 3:38 PM, -0.5 ft
 High: May 15, 10:33 PM, 1.2 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

81°F
Clear
Clear
84.7°F
82.4°F
67%
NNW 9.8 mph
13 mph
79.3°F
67.7°F
0 in
0%
9 mi
1015 mbar
0

Five Day Weather Forecast

Sunny
Fri
H: 85°F
L: 79°F
Sunny
Sat
H: 83°F
L: 81°F
Patchy rain nearby
Sun
H: 83°F
L: 82°F
Patchy rain nearby
Mon
H: 83°F
L: 82°F
Patchy rain nearby
Tue
H: 83°F
L: 81°F

Air Quality

AQI: 1 - Good
PM2.5: 8.85 μg/m3
PM10: 13.85 μg/m3
Carbon Monoxide: 143.85 μg/m3
Nitrogen Dioxide: 1.25 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 98 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:23 PM
Sunset: 8:04 PM
Daylight: 13 hrs 20 mins
Moonrise: 5:25 AM
Moon Transit: 12:11 AM
Moonset: 7:06 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:22 AM - 2:52 AM
11:41 AM - 2:11 PM

Minor Periods

6:36 PM - 8:06 PM
4:55 AM - 6:25 AM

Action Rating: 5 out of 5

Friday, May 15, 2026

Weather Forecast

Sunny
85.1°F
78.8°F
81.5°F
63%
0 in
0%
0%
11.4 mph
10.5


Air Quality

AQI: 1 - Good
PM2.5: 8.75 μg/m3
PM10: 13.37 μg/m3
Carbon Monoxide: 146.01 μg/m3
Nitrogen Dioxide: 1.29 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 99.52 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:23 PM
Sunset: 8:04 PM
Daylight: 13 hrs 20 mins
Moonrise: 5:25 AM
Moon Transit: 12:11 AM
Moonset: 7:06 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:22 AM - 2:52 AM
11:41 AM - 2:11 PM

Minor Periods

6:36 PM - 8:06 PM
4:55 AM - 6:25 AM

Action Rating: 5 out of 5

Saturday, May 16, 2026

Weather Forecast

Sunny
83.2°F
80.9°F
82.3°F
65%
0 in
0%
0%
18.1 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 7.25 μg/m3
PM10: 10.85 μg/m3
Carbon Monoxide: 142.49 μg/m3
Nitrogen Dioxide: 1.61 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 91.6 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:23 PM
Sunset: 8:04 PM
Daylight: 13 hrs 21 mins
Moonrise: 6:12 AM
Moon Transit: 1:11 PM
Moonset: 8:17 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

1:19 AM - 3:49 AM
12:41 AM - 3:11 PM

Minor Periods

7:47 PM - 9:17 PM
5:42 AM - 7:12 AM

Action Rating: 5 out of 5

Sunday, May 17, 2026

Weather Forecast

Patchy rain nearby
83.2°F
81.8°F
82.7°F
73%
0.17 in
89%
0%
20.4 mph
11.1


Air Quality

AQI: 1 - Good
PM2.5: 6.29 μg/m3
PM10: 9.36 μg/m3
Carbon Monoxide: 121.21 μg/m3
Nitrogen Dioxide: 1.51 μg/m3
Sulphur Dioxide: 1.25 μg/m3
Ozone: 70.52 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:23 PM
Sunset: 8:05 PM
Daylight: 13 hrs 22 mins
Moonrise: 7:06 AM
Moon Transit: 2:15 PM
Moonset: 9:29 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

2:21 AM - 4:51 AM
1:45 PM - 4:15 PM

Minor Periods

8:59 PM - 10:29 PM
6:36 AM - 8:06 AM

Action Rating: 4 out of 5

Monday, May 18, 2026

Weather Forecast

Patchy rain nearby
83.2°F
82°F
82.7°F
74%
0.05 in
89%
0%
21.5 mph
11.2


Air Quality

AQI: 1 - Good
PM2.5: 6.29 μg/m3
PM10: 10.1 μg/m3
Carbon Monoxide: 111.51 μg/m3
Nitrogen Dioxide: 1.49 μg/m3
Sulphur Dioxide: 1.13 μg/m3
Ozone: 57.76 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:23 PM
Sunset: 8:05 PM
Daylight: 13 hrs 23 mins
Moonrise: 8:08 AM
Moon Transit: 3:22 PM
Moonset: 10:38 PM
Moon Phase: New
Moon Illumination: 2.6%

Best Times for Fishing or Hunting

Major Periods

3:27 AM - 5:57 AM
2:52 PM - 5:22 PM

Minor Periods

10:08 PM - 11:38 PM
7:38 AM - 9:08 AM

Action Rating: 3 out of 5

Tuesday, May 19, 2026

Weather Forecast

Patchy rain nearby
83°F
81.4°F
82.4°F
74%
0.05 in
88%
0%
21.3 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 7.55 μg/m3
PM10: 12.3 μg/m3
Carbon Monoxide: 102.31 μg/m3
Nitrogen Dioxide: 1.62 μg/m3
Sulphur Dioxide: 1.12 μg/m3
Ozone: 54.85 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:23 PM
Sunset: 8:06 PM
Daylight: 13 hrs 24 mins
Moonrise: 9:16 AM
Moon Transit: 4:28 PM
Moonset: 11:38 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.4%

Best Times for Fishing or Hunting

Major Periods

4:34 AM - 7:04 AM
3:58 PM - 6:28 PM

Minor Periods

12:00 AM - 12:00 AM
8:46 AM - 10:16 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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