Water Temperature of the Gulf of Mexico in Marathon, FL

Current Water Temperature

76.1°F

Measurement Time: Monday, April 13, 2026, 1:12 AM EDT

Today's Tides

Low: April 13, 4:07 AM, 0.0 ft
 High: April 13, 1:31 PM, 0.4 ft
Low: April 13, 4:11 PM, 0.3 ft
 High: April 13, 11:10 PM, 0.6 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

75°F
Partly cloudy
Partly cloudy
78°F
78.5°F
66%
ENE 26.8 mph
35.6 mph
75.4°F
64.9°F
0 in
50%
9 mi
1023 mbar
0

Five Day Weather Forecast

Partly Cloudy
Mon
H: 79°F
L: 73°F
Overcast
Tue
H: 74°F
L: 71°F
Overcast
Wed
H: 72°F
L: 72°F
Patchy rain nearby
Thu
H: 77°F
L: 72°F
Patchy rain nearby
Fri
H: 77°F
L: 76°F

Air Quality

PM2.5: 7.55 μg/m3
PM10: 11.25 μg/m3
Carbon Monoxide: 125.85 μg/m3
Nitrogen Dioxide: 1.55 μg/m3
Sulphur Dioxide: 1.15 μg/m3
Ozone: 98 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 1:24 PM
Sunset: 7:46 PM
Daylight: 12 hrs 42 mins
Moonrise: 4:31 AM
Moon Transit: 10:17 AM
Moonset: 4:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:47 AM - 12:17 AM

Minor Periods

3:40 PM - 5:10 PM
4:01 AM - 5:31 AM

Action Rating: 2 out of 5

Monday, April 13, 2026

Weather Forecast

Partly Cloudy
78.6°F
73.2°F
75°F
68%
0 in
0%
0%
26.8 mph
2.4


Air Quality

AQI: 1 - Good
PM2.5: 7.85 μg/m3
PM10: 11.69 μg/m3
Carbon Monoxide: 127.01 μg/m3
Nitrogen Dioxide: 1.43 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 99.28 μg/m3

Astronomical

Sunrise: 7:04 AM
Sun Transit: 1:24 PM
Sunset: 7:46 PM
Daylight: 12 hrs 42 mins
Moonrise: 4:31 AM
Moon Transit: 10:17 AM
Moonset: 4:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:47 AM - 12:17 AM

Minor Periods

3:40 PM - 5:10 PM
4:01 AM - 5:31 AM

Action Rating: 2 out of 5

Tuesday, April 14, 2026

Weather Forecast

Overcast
73.8°F
71.2°F
72.7°F
76%
0 in
0%
0%
23.5 mph
2.4


Air Quality

AQI: 1 - Good
PM2.5: 8.82 μg/m3
PM10: 13.24 μg/m3
Carbon Monoxide: 126.13 μg/m3
Nitrogen Dioxide: 1.23 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 103.96 μg/m3

Astronomical

Sunrise: 7:03 AM
Sun Transit: 1:24 PM
Sunset: 7:46 PM
Daylight: 12 hrs 43 mins
Moonrise: 5:04 AM
Moon Transit: 12:00 AM
Moonset: 5:08 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

4:38 PM - 6:08 PM
4:34 AM - 6:04 AM

Action Rating: 2 out of 5

Wednesday, April 15, 2026

Weather Forecast

Overcast
72.4°F
71.7°F
72.4°F
75%
0 in
0%
0%
22.6 mph
2.4


Air Quality

AQI: 1 - Good
PM2.5: 9.06 μg/m3
PM10: 13.93 μg/m3
Carbon Monoxide: 126.28 μg/m3
Nitrogen Dioxide: 1.2 μg/m3
Sulphur Dioxide: 1.07 μg/m3
Ozone: 108.88 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 1:24 PM
Sunset: 7:47 PM
Daylight: 12 hrs 44 mins
Moonrise: 5:37 AM
Moon Transit: 11:33 AM
Moonset: 6:09 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:09 AM - 2:39 AM
11:03 AM - 1:33 PM

Minor Periods

5:39 PM - 7:09 PM
5:07 AM - 6:37 AM

Action Rating: 3 out of 5

Thursday, April 16, 2026

Weather Forecast

Patchy rain nearby
77.2°F
71.6°F
75.6°F
77%
0.01 in
88%
0%
21.3 mph
2.4


Air Quality

AQI: 1 - Good
PM2.5: 8.2 μg/m3
PM10: 12.76 μg/m3
Carbon Monoxide: 116.43 μg/m3
Nitrogen Dioxide: 1.23 μg/m3
Sulphur Dioxide: 1.01 μg/m3
Ozone: 103.46 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 1:24 PM
Sunset: 7:47 PM
Daylight: 12 hrs 46 mins
Moonrise: 6:13 AM
Moon Transit: 12:38 AM
Moonset: 7:11 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:57 AM - 3:27 AM
12:08 AM - 2:38 PM

Minor Periods

6:41 PM - 8:11 PM
5:43 AM - 7:13 AM

Action Rating: 5 out of 5

Friday, April 17, 2026

Weather Forecast

Patchy rain nearby
77°F
75.7°F
76.3°F
83%
0 in
0%
0%
20.6 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: 7:01 AM
Sun Transit: 1:23 PM
Sunset: 7:48 PM
Daylight: 12 hrs 47 mins
Moonrise: 6:51 AM
Moon Transit: 1:30 PM
Moonset: 8:18 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

1:47 AM - 4:17 AM
1:00 PM - 3:30 PM

Minor Periods

7:48 PM - 9:18 PM
6:21 AM - 7:51 AM

Action Rating: 4 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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