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

Current Water Temperature

79.5°F

Measurement Time: Wednesday, March 11, 2026, 12:12 PM EDT

Today's Tides

 High: March 11, 5:11 AM, 0.5 ft
Low: March 11, 7:38 AM, 0.5 ft
 High: March 11, 3:45 PM, 1.2 ft
Low: March 11, 11:41 PM, 0.0 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

82°F
Sunny
Sunny
88.8°F
85.8°F
67%
ESE 15.7 mph
21.6 mph
80.4°F
73.6°F
0 in
25%
9 mi
1021 mbar
8.3

Five Day Weather Forecast

Sunny
Wed
H: 81°F
L: 77°F
Overcast
Thu
H: 76°F
L: 73°F
Overcast
Fri
H: 75°F
L: 74°F
Moderate rain
Sat
H: 78°F
L: 75°F
Heavy rain
Sun
H: 78°F
L: 69°F

Air Quality

AQI: 1 - Good
PM2.5: 7.45 μg/m3
PM10: 11.65 μg/m3
Carbon Monoxide: 105.85 μg/m3
Nitrogen Dioxide: 1.15 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 72 μg/m3

Astronomical

Sunrise: 7:40 AM
Sun Transit: 1:37 PM
Sunset: 7:34 PM
Daylight: 11 hrs 54 mins
Moonrise: 2:20 AM
Moon Transit: 7:33 AM
Moonset: 12:47 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

7:03 AM - 9:33 AM
8:37 PM - 11:07 PM

Minor Periods

12:17 AM - 1:47 PM
1:50 AM - 3:20 AM

Action Rating: 2 out of 5

Wednesday, March 11, 2026

Weather Forecast

Sunny
81.3°F
76.6°F
78.3°F
77%
0 in
0%
0%
19.7 mph
2.3


Air Quality

AQI: 1 - Good
PM2.5: 7.68 μg/m3
PM10: 12.01 μg/m3
Carbon Monoxide: 104.49 μg/m3
Nitrogen Dioxide: 1.4 μg/m3
Sulphur Dioxide: 1.08 μg/m3
Ozone: 70 μg/m3

Astronomical

Sunrise: 7:40 AM
Sun Transit: 1:37 PM
Sunset: 7:34 PM
Daylight: 11 hrs 54 mins
Moonrise: 2:20 AM
Moon Transit: 7:33 AM
Moonset: 12:47 AM
Moon Phase: Last Quarter
Moon Illumination: 36.0%

Best Times for Fishing or Hunting

Major Periods

7:03 AM - 9:33 AM
8:37 PM - 11:07 PM

Minor Periods

12:17 AM - 1:47 PM
1:50 AM - 3:20 AM

Action Rating: 2 out of 5

Thursday, March 12, 2026

Weather Forecast

Overcast
75.9°F
73.4°F
75.5°F
89%
0 in
0%
0%
16.6 mph
1.9


Air Quality

AQI: 1 - Good
PM2.5: 6.54 μg/m3
PM10: 10.03 μg/m3
Carbon Monoxide: 105.69 μg/m3
Nitrogen Dioxide: 1.48 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 67.16 μg/m3

Astronomical

Sunrise: 7:39 AM
Sun Transit: 1:36 PM
Sunset: 7:35 PM
Daylight: 11 hrs 56 mins
Moonrise: 3:12 AM
Moon Transit: 8:25 AM
Moonset: 1:39 PM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:55 AM - 10:25 AM
12:00 AM - 12:00 AM

Minor Periods

1:09 PM - 2:39 PM
2:42 AM - 4:12 AM

Action Rating: 3 out of 5

Friday, March 13, 2026

Weather Forecast

Overcast
75.2°F
73.8°F
74.7°F
88%
0 in
0%
0%
11.9 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.2 μg/m3
PM10: 9.07 μg/m3
Carbon Monoxide: 104.01 μg/m3
Nitrogen Dioxide: 1.93 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 67.24 μg/m3

Astronomical

Sunrise: 7:38 AM
Sun Transit: 1:36 PM
Sunset: 7:35 PM
Daylight: 11 hrs 57 mins
Moonrise: 4:01 AM
Moon Transit: 9:17 AM
Moonset: 2:36 PM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

8:47 AM - 11:17 AM
12:00 AM - 12:00 AM

Minor Periods

2:06 PM - 3:36 PM
3:31 AM - 5:01 AM

Action Rating: 2 out of 5

Saturday, March 14, 2026

Weather Forecast

Moderate rain
78°F
75°F
76.2°F
84%
0.22 in
89%
0%
18.6 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 6.5 μg/m3
PM10: 9.47 μg/m3
Carbon Monoxide: 104.95 μg/m3
Nitrogen Dioxide: 1.73 μg/m3
Sulphur Dioxide: 1.49 μg/m3
Ozone: 66.96 μg/m3

Astronomical

Sunrise: 7:37 AM
Sun Transit: 12:00 AM
Sunset: 7:36 PM
Daylight: 11 hrs 59 mins
Moonrise: 4:46 AM
Moon Transit: 10:07 AM
Moonset: 3:34 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:37 AM - 12:07 AM

Minor Periods

3:04 PM - 4:34 PM
4:16 AM - 5:46 AM

Action Rating: 2 out of 5

Sunday, March 15, 2026

Weather Forecast

Heavy rain
77.7°F
68.6°F
75.5°F
78%
0.86 in
89%
0%
20.6 mph
5


Air Quality

AQI: 1 - Good
PM2.5: 6.73 μg/m3
PM10: 9.85 μg/m3
Carbon Monoxide: 106.7 μg/m3
Nitrogen Dioxide: 1.83 μg/m3
Sulphur Dioxide: 1.64 μg/m3
Ozone: 66.46 μg/m3

Astronomical

Sunrise: 7:36 AM
Sun Transit: 12:00 AM
Sunset: 7:36 PM
Daylight: 12 hrs mins
Moonrise: 5:26 AM
Moon Transit: 10:56 AM
Moonset: 4:33 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:26 AM - 12:56 AM

Minor Periods

4:03 PM - 5:33 PM
4:56 AM - 6:26 AM

Action Rating: 2 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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