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

Current Water Temperature

74.3°F

Measurement Time: Thursday, January 15, 2026, 11:24 PM EST

Today's Tides

Low: January 15, 1:52 AM, -0.3 ft
 High: January 15, 8:55 AM, 0.6 ft
Low: January 15, 12:40 PM, 0.4 ft
 High: January 15, 7:24 PM, 1.5 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

64°F
Overcast
Overcast
64°F
64.3°F
58%
NNW 23.9 mph
28.8 mph
64.2°F
50.8°F
0 in
100%
9 mi
1018 mbar
0

Five Day Weather Forecast

Sunny
Thu
H: 74°F
L: 65°F
Sunny
Fri
H: 67°F
L: 59°F
Heavy rain
Sat
H: 71°F
L: 67°F
Patchy rain nearby
Sun
H: 72°F
L: 64°F
Partly Cloudy
Mon
H: 62°F
L: 57°F

Air Quality

PM2.5: 6.55 μg/m3
PM10: 9.95 μg/m3
Carbon Monoxide: 140.85 μg/m3
Nitrogen Dioxide: 1.65 μg/m3
Sulphur Dioxide: 1.55 μg/m3
Ozone: 98 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:36 AM
Sunset: 6:00 PM
Daylight: 10 hrs 47 mins
Moonrise: 4:46 AM
Moon Transit: 10:00 AM
Moonset: 3:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:30 AM - 12:00 AM

Minor Periods

2:43 PM - 4:13 PM
4:16 AM - 5:46 AM

Action Rating: 2 out of 5

Cold Weather Advisory issued January 15 at 1:18PM EST until January 16 at 9:00AM EST by NWS Miami FL

Effective: Thu January 15, 2026, 1:18 PM
Expires: Fri January 16, 2026, 9:00 AM

* WHAT...Very cold wind chills in the lower 30s expected for most of South Florida. * WHERE...Far South Miami-Dade County, Inland Broward County, Inland Miami-Dade County, Inland Palm Beach County, Metro Broward County, Metro Palm Beach County, Metropolitan Miami Dade, Inland Collier County, and Mainland Monroe Counties. * WHEN...From 3 AM to 9 AM EST Friday. * IMPACTS...Very cold temperatures can lead to hypothermia with prolonged exposure.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. Keep pets indoors as much as possible. Make sure outdoor animals have a warm, dry shelter, food, and unfrozen water. Make frequent checks on older family, friends, and neighbors. Ensure portable heaters are used correctly. Do not use generators or grills inside.
Thursday, January 15, 2026

Weather Forecast

Sunny
74.1°F
64.6°F
70.8°F
77%
0 in
0%
0%
32.7 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 9.54 μg/m3
PM10: 13.39 μg/m3
Carbon Monoxide: 137.05 μg/m3
Nitrogen Dioxide: 1.33 μg/m3
Sulphur Dioxide: 1.28 μg/m3
Ozone: 91.88 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:36 AM
Sunset: 6:00 PM
Daylight: 10 hrs 47 mins
Moonrise: 4:46 AM
Moon Transit: 10:00 AM
Moonset: 3:13 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:30 AM - 12:00 AM

Minor Periods

2:43 PM - 4:13 PM
4:16 AM - 5:46 AM

Action Rating: 2 out of 5

Friday, January 16, 2026

Weather Forecast

Sunny
67.3°F
58.8°F
63.1°F
73%
0 in
0%
0%
23.3 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 5.59 μg/m3
PM10: 8.06 μg/m3
Carbon Monoxide: 142.69 μg/m3
Nitrogen Dioxide: 1.75 μg/m3
Sulphur Dioxide: 1.68 μg/m3
Ozone: 93.8 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:37 AM
Sunset: 6:01 PM
Daylight: 10 hrs 48 mins
Moonrise: 5:39 AM
Moon Transit: 10:52 AM
Moonset: 4:06 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.5%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

3:36 PM - 5:06 PM
5:09 AM - 6:39 AM

Action Rating: 2 out of 5

Saturday, January 17, 2026

Weather Forecast

Heavy rain
70.5°F
66.9°F
69°F
87%
1.89 in
89%
0%
16.8 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 8.15 μg/m3
PM10: 11.21 μg/m3
Carbon Monoxide: 158.25 μg/m3
Nitrogen Dioxide: 1.82 μg/m3
Sulphur Dioxide: 1.99 μg/m3
Ozone: 107.88 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:37 AM
Sunset: 6:02 PM
Daylight: 10 hrs 49 mins
Moonrise: 6:29 AM
Moon Transit: 11:44 AM
Moonset: 5:03 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
11:14 AM - 1:44 PM

Minor Periods

4:33 PM - 6:03 PM
5:59 AM - 7:29 AM

Action Rating: 5 out of 5

Sunday, January 18, 2026

Weather Forecast

Patchy rain nearby
72.1°F
64.1°F
70.1°F
79%
0.02 in
89%
0%
30.2 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 10.68 μg/m3
PM10: 14.34 μg/m3
Carbon Monoxide: 155.04 μg/m3
Nitrogen Dioxide: 1.85 μg/m3
Sulphur Dioxide: 2.16 μg/m3
Ozone: 108 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 12:37 AM
Sunset: 6:03 PM
Daylight: 10 hrs 50 mins
Moonrise: 7:14 AM
Moon Transit: 12:36 AM
Moonset: 6:01 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

12:48 AM - 3:18 AM
12:06 AM - 2:36 PM

Minor Periods

5:31 PM - 7:01 PM
6:44 AM - 8:14 AM

Action Rating: 4 out of 5

Monday, January 19, 2026

Weather Forecast

Partly Cloudy
61.5°F
56.5°F
61.2°F
63%
0 in
0%
0%
24.2 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: 7:13 AM
Sun Transit: 12:38 AM
Sunset: 6:03 PM
Daylight: 10 hrs 51 mins
Moonrise: 7:56 AM
Moon Transit: 1:25 PM
Moonset: 7:00 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

1:38 AM - 4:08 AM
12:55 AM - 3:25 PM

Minor Periods

6:30 PM - 8:00 PM
7:26 AM - 8:56 AM

Action Rating: 5 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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