Water Temperature of the Gulf of Mexico in Marathon, FL

Current Water Temperature

70.7°F

Measurement Time: Wednesday, February 11, 2026, 5:48 PM EST

Today's Tides

Low: February 11, 1:58 AM, -0.5 ft
 High: February 11, 7:38 PM, 0.5 ft

Temperature Locations

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Local Points of Interest

Marathon Key; Vaca Key; Boot Key; Florida Keys

Gulf of Mexico

Station Name: Vaca Key, Florida Bay
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 20 feet

Sensor Depth: -3 feet

Nearest Address:
Palm Island Ave
Marathon, FL 33050
Monroe County

GPS Coordinates: 24.711000, -81.106500

Nearby Water Temperatures

Florida Bay, Islamorada, FL (25.7 mi)
Florida Bay, Islamorada, FL (26.7 mi)
Joe Kemp Channel, Flamingo, FL (29.2 mi)
East Side Creek, Flamingo, FL (29.5 mi)
Gulf of Mexico, Flamingo, FL (33 mi)
Whipray Basin, Islamorada, FL (34.1 mi)
Florida Bay, Islamorada, FL (34.5 mi)
Whitewater Bay, Flamingo, FL (37.5 mi)
Seven Palm Lake, Flamingo, FL (40 mi)
Little Madeira Bay, Homestead, FL (43.7 mi)
Taylor River, Homestead, FL (44.2 mi)
Shark River, Flamingo, FL (44.3 mi)
Florida Bay, Key Largo, FL (45.1 mi)
Taylor River, Homestead, FL (45.2 mi)
Gulf of Mexico, Key West, FL (45.4 mi)

Weather for Marathon, Florida

Current Weather

73°F
Sunny
Sunny
76.9°F
72.7°F
66%
SE 10.3 mph
15.3 mph
69.9°F
62.8°F
0 in
0%
9 mi
1020 mbar
0.4

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 70°F
L: 66°F
Fog
Thu
H: 65°F
L: 60°F
Fog
Fri
H: 63°F
L: 60°F
Cloudy
Sat
H: 68°F
L: 64°F
Patchy rain nearby
Sun
H: 73°F
L: 71°F

Air Quality

AQI: 1 - Good
PM2.5: 7.25 μg/m3
PM10: 9.95 μg/m3
Carbon Monoxide: 144.85 μg/m3
Nitrogen Dioxide: 2.05 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 88 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:38 AM
Sunset: 6:17 PM
Daylight: 11 hrs 16 mins
Moonrise: 2:34 AM
Moon Transit: 7:48 AM
Moonset: 1:02 PM
Moon Phase: Last Quarter
Moon Illumination: 20.5%

Best Times for Fishing or Hunting

Major Periods

7:18 AM - 9:48 AM
8:57 PM - 11:27 PM

Minor Periods

12:32 AM - 2:02 PM
2:04 AM - 3:34 AM

Action Rating: 3 out of 5

Wednesday, February 11, 2026

Weather Forecast

Patchy rain nearby
70.3°F
65.7°F
67.3°F
84%
0.06 in
78%
0%
12.8 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 6.87 μg/m3
PM10: 9.59 μg/m3
Carbon Monoxide: 140.25 μg/m3
Nitrogen Dioxide: 1.67 μg/m3
Sulphur Dioxide: 1.22 μg/m3
Ozone: 94.28 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 12:38 AM
Sunset: 6:17 PM
Daylight: 11 hrs 16 mins
Moonrise: 2:34 AM
Moon Transit: 7:48 AM
Moonset: 1:02 PM
Moon Phase: Last Quarter
Moon Illumination: 20.5%

Best Times for Fishing or Hunting

Major Periods

7:18 AM - 9:48 AM
8:57 PM - 11:27 PM

Minor Periods

12:32 AM - 2:02 PM
2:04 AM - 3:34 AM

Action Rating: 3 out of 5

Thursday, February 12, 2026

Weather Forecast

Fog
65.1°F
59.6°F
63.2°F
95%
0 in
0%
0%
7.8 mph
1.6


Air Quality

AQI: 1 - Good
PM2.5: 7.06 μg/m3
PM10: 9.46 μg/m3
Carbon Monoxide: 143.77 μg/m3
Nitrogen Dioxide: 2.4 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 82 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:38 AM
Sunset: 6:17 PM
Daylight: 11 hrs 17 mins
Moonrise: 3:27 AM
Moon Transit: 8:40 AM
Moonset: 1:53 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.2%

Best Times for Fishing or Hunting

Major Periods

8:10 AM - 10:40 AM
12:00 AM - 12:00 AM

Minor Periods

1:23 PM - 2:53 PM
2:57 AM - 4:27 AM

Action Rating: 2 out of 5

Friday, February 13, 2026

Weather Forecast

Fog
63°F
59.5°F
61.3°F
98%
0 in
0%
0%
8.5 mph
1.6


Air Quality

AQI: 1 - Good
PM2.5: 7.63 μg/m3
PM10: 9.57 μg/m3
Carbon Monoxide: 139.77 μg/m3
Nitrogen Dioxide: 2.09 μg/m3
Sulphur Dioxide: 1.29 μg/m3
Ozone: 82.48 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:38 AM
Sunset: 6:18 PM
Daylight: 11 hrs 18 mins
Moonrise: 4:19 AM
Moon Transit: 9:32 AM
Moonset: 2:48 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:02 AM - 11:32 AM

Minor Periods

2:18 PM - 3:48 PM
3:49 AM - 5:19 AM

Action Rating: 2 out of 5

Saturday, February 14, 2026

Weather Forecast

Cloudy
68.4°F
63.7°F
66.3°F
93%
0 in
0%
0%
13.6 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 8.84 μg/m3
PM10: 10.51 μg/m3
Carbon Monoxide: 133.27 μg/m3
Nitrogen Dioxide: 2.31 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 94.36 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 12:38 AM
Sunset: 6:19 PM
Daylight: 11 hrs 20 mins
Moonrise: 5:06 AM
Moon Transit: 10:24 AM
Moonset: 3:46 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.7%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:54 AM - 12:24 AM

Minor Periods

3:16 PM - 4:46 PM
4:36 AM - 6:06 AM

Action Rating: 2 out of 5

Sunday, February 15, 2026

Weather Forecast

Patchy rain nearby
72.6°F
71.1°F
72.3°F
84%
0.09 in
87%
0%
20.4 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 7.47 μg/m3
PM10: 10.23 μg/m3
Carbon Monoxide: 134.83 μg/m3
Nitrogen Dioxide: 1.5 μg/m3
Sulphur Dioxide: 1.27 μg/m3
Ozone: 94 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 12:38 AM
Sunset: 6:19 PM
Daylight: 11 hrs 21 mins
Moonrise: 5:49 AM
Moon Transit: 11:15 AM
Moonset: 4:45 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:45 AM - 1:15 PM

Minor Periods

4:15 PM - 5:45 PM
5:19 AM - 6:49 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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