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

Current Water Temperature

91.9°F

Measurement Time: Saturday, August 1, 2026, 4:54 PM EDT

Today's Tides

 High: August 1, 12:36 AM, 1.4 ft
Low: August 1, 5:37 AM, 0.5 ft
 High: August 1, 12:21 PM, 1.9 ft
Low: August 1, 6:28 PM, 0.2 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

86.7°F
Partly Cloudy
Partly Cloudy
99.7°F
99°F
76%
WNW 4.3 mph
5.7 mph
86.7°F
78.1°F
0 in
38%
6 mi
1014 mbar
3.9

Five Day Weather Forecast

Sunny
Sat
H: 90°F
L: 84°F
Patchy rain nearby
Sun
H: 86°F
L: 85°F
Sunny
Mon
H: 86°F
L: 85°F
Sunny
Tue
H: 87°F
L: 83°F
Patchy rain nearby
Wed
H: 86°F
L: 84°F

Air Quality

AQI: 1 - Good
PM2.5: 12.7 μg/m3
PM10: 22 μg/m3
Carbon Monoxide: 92 μg/m3
Nitrogen Dioxide: 0.4 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:33 PM
Sunset: 8:11 PM
Daylight: 13 hrs 16 mins
Moonrise: 10:10 PM
Moon Transit: 3:32 AM
Moonset: 9:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

3:02 AM - 5:32 AM
12:00 AM - 12:00 AM

Minor Periods

9:40 PM - 11:10 PM
9:02 AM - 10:32 AM

Action Rating: 2 out of 5

Saturday, August 1, 2026

Weather Forecast

Sunny
89.6°F
84°F
85.7°F
72%
0 in
7%
0%
9.2 mph
11.4


Air Quality

AQI: 1 - Good
PM2.5: 10.58 μg/m3
PM10: 18.3 μg/m3
Carbon Monoxide: 90.17 μg/m3
Nitrogen Dioxide: 0.6 μg/m3
Sulphur Dioxide: 0.94 μg/m3
Ozone: 71.08 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:33 PM
Sunset: 8:11 PM
Daylight: 13 hrs 16 mins
Moonrise: 10:10 PM
Moon Transit: 3:32 AM
Moonset: 9:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

3:02 AM - 5:32 AM
12:00 AM - 12:00 AM

Minor Periods

9:40 PM - 11:10 PM
9:02 AM - 10:32 AM

Action Rating: 2 out of 5

Sunday, August 2, 2026

Weather Forecast

Patchy rain nearby
85.6°F
84.5°F
85.3°F
72%
0.12 in
60%
0%
14.8 mph
11.1


Air Quality

AQI: 1 - Good
PM2.5: 12.74 μg/m3
PM10: 28.88 μg/m3
Carbon Monoxide: 90.71 μg/m3
Nitrogen Dioxide: 0.66 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 50.71 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:33 PM
Sunset: 8:11 PM
Daylight: 13 hrs 15 mins
Moonrise: 10:41 PM
Moon Transit: 6:50 PM
Moonset: 10:28 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

6:20 PM - 8:50 PM
6:20 PM - 8:50 PM

Minor Periods

10:11 PM - 11:41 PM
9:58 AM - 11:28 AM

Action Rating: 2 out of 5

Monday, August 3, 2026

Weather Forecast

Sunny
85.6°F
84.5°F
85.2°F
67%
0 in
9%
0%
13.4 mph
10.7


Air Quality

AQI: 1 - Good
PM2.5: 8 μg/m3
PM10: 13.23 μg/m3
Carbon Monoxide: 104.13 μg/m3
Nitrogen Dioxide: 0.9 μg/m3
Sulphur Dioxide: 1.1 μg/m3
Ozone: 69.83 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 1:33 PM
Sunset: 8:10 PM
Daylight: 13 hrs 13 mins
Moonrise: 11:14 PM
Moon Transit: 12:00 AM
Moonset: 11:23 AM
Moon Phase: Waning Gibbous
Moon Illumination: 65.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
5:59 PM - 8:29 PM

Minor Periods

12:00 AM - 12:00 AM
10:53 AM - 12:23 AM

Action Rating: 3 out of 5

Tuesday, August 4, 2026

Weather Forecast

Sunny
87°F
82.6°F
85.7°F
66%
0.15 in
59%
0%
19.2 mph
11.6


Air Quality

AQI: 1 - Good
PM2.5: 8.38 μg/m3
PM10: 13.2 μg/m3
Carbon Monoxide: 103.28 μg/m3
Nitrogen Dioxide: 0.8 μg/m3
Sulphur Dioxide: 0.84 μg/m3
Ozone: 73.67 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 1:33 PM
Sunset: 8:09 PM
Daylight: 13 hrs 12 mins
Moonrise: 12:14 AM
Moon Transit: 5:44 AM
Moonset: 12:22 AM
Moon Phase: Last Quarter
Moon Illumination: 54.6%

Best Times for Fishing or Hunting

Major Periods

5:14 AM - 7:44 AM
6:46 PM - 9:16 PM

Minor Periods

11:52 AM - 1:22 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, August 5, 2026

Weather Forecast

Patchy rain nearby
86.4°F
84°F
85.4°F
72%
0.15 in
64%
0%
19.5 mph
11


Air Quality

AQI: 1 - Good
PM2.5: 4.84 μg/m3
PM10: 8.19 μg/m3
Carbon Monoxide: 116.11 μg/m3
Nitrogen Dioxide: 0.91 μg/m3
Sulphur Dioxide: 0.42 μg/m3
Ozone: 55.33 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 1:33 PM
Sunset: 8:09 PM
Daylight: 13 hrs 11 mins
Moonrise: 12:50 AM
Moon Transit: 6:33 AM
Moonset: 1:23 PM
Moon Phase: Last Quarter
Moon Illumination: 43.2%

Best Times for Fishing or Hunting

Major Periods

6:03 AM - 8:33 AM
7:37 PM - 10:07 PM

Minor Periods

12:53 AM - 2:23 PM
12:00 AM - 12:00 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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