Water Temperature of the Gulf of Mexico in Marathon, FL

Current Water Temperature

73.8°F

Measurement Time: Friday, March 21, 2025, 12:54 PM EDT

Today's Tides

 Low: March 21, 12:12 AM, -0.58 ft
High: March 21, 6:33 PM, 0.58 ft

Temperature Locations

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Local Points of Interest

Marathon Key; Vaca Key; Boot Key; Florida Keys

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Gulf of Mexico

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

Elevation Above Sea Level: 20 feet / 6 meters

Sensor Depth: -3.4 feet / -1.0 meters

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 (33.0 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 (40.0 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

68.2°F
Sunny
Conditions: Sunny
Humidity: 55%
Feels Like: 68.2°F
Wind: N 16.8 mph
Wind Gusts: 20.5 mph
Pressure: 30.17 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 10.2

Five Day Weather Forecast

Partly Cloudy
Fri
H: 68°F
L: 65°F
Overcast
Sat
H: 69°F
L: 65°F
Overcast
Sun
H: 73°F
L: 69°F
Partly Cloudy
Mon
H: 76°F
L: 73°F
Patchy rain nearby
Tue
H: 77°F
L: 75°F

Air Quality

AQI: 1 - Good
PM2.5: 12.03 μg/m3
PM10: 15.91 μg/m3
Carbon Monoxide: 301.55 μg/m3
Nitrogen Dioxide: 0.93 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 126 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:00 AM
Sunset: 7:36 PM
Daylight: 12 hrs 9 mins
Moonrise: 1:25 AM
Moon Transit: 6:39 AM
Moonset: 11:52 AM
Moon Phase: Last Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

6:09 AM - 8:39 AM
7:49 PM - 10:19 PM

Minor Periods

11:22 AM - 12:52 AM
12:55 AM - 2:25 AM

Action Rating: 3 out of 5

Friday, March 21, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 67.1°F
Average Humidity: 74%
Chance of Rain: 0%
Wind: 24.4 mph
UV Index: 2.4

Air Quality

AQI: 1 - Good
PM2.5: 14.67 μg/m3
PM10: 21.43 μg/m3
Carbon Monoxide: 285.57 μg/m3
Nitrogen Dioxide: 0.95 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 116.88 μg/m3

Astronomical

Sunrise: 7:27 AM
Sun Transit: 12:00 AM
Sunset: 7:36 PM
Daylight: 12 hrs 9 mins
Moonrise: 1:25 AM
Moon Transit: 6:39 AM
Moonset: 11:52 AM
Moon Phase: Last Quarter
Moon Illumination: 43.0%

Best Times for Fishing or Hunting

Major Periods

6:09 AM - 8:39 AM
7:49 PM - 10:19 PM

Minor Periods

11:22 AM - 12:52 AM
12:55 AM - 2:25 AM

Action Rating: 3 out of 5

Saturday, March 22, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 67.7°F
Average Humidity: 74%
Chance of Rain: 0%
Wind: 12.8 mph
UV Index: 2.3

Air Quality

AQI: 2 - Moderate
PM2.5: 17.02 μg/m3
PM10: 23.1 μg/m3
Carbon Monoxide: 294.52 μg/m3
Nitrogen Dioxide: 1.32 μg/m3
Sulphur Dioxide: 1.43 μg/m3
Ozone: 124.96 μg/m3

Astronomical

Sunrise: 7:26 AM
Sun Transit: 12:00 AM
Sunset: 7:36 PM
Daylight: 12 hrs 11 mins
Moonrise: 2:21 AM
Moon Transit: 7:33 AM
Moonset: 12:46 AM
Moon Phase: Last Quarter
Moon Illumination: 32.1%

Best Times for Fishing or Hunting

Major Periods

7:03 AM - 9:33 AM
8:44 PM - 11:14 PM

Minor Periods

12:16 AM - 1:46 PM
1:51 AM - 3:21 AM

Action Rating: 3 out of 5

Sunday, March 23, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 70.9°F
Average Humidity: 73%
Chance of Rain: 0%
Wind: 17.2 mph
UV Index: 2

Air Quality

AQI: 2 - Moderate
PM2.5: 16.61 μg/m3
PM10: 23.84 μg/m3
Carbon Monoxide: 279.79 μg/m3
Nitrogen Dioxide: 1.03 μg/m3
Sulphur Dioxide: 0.84 μg/m3
Ozone: 121.52 μg/m3

Astronomical

Sunrise: 7:25 AM
Sun Transit: 12:00 AM
Sunset: 7:37 PM
Daylight: 12 hrs 12 mins
Moonrise: 3:14 AM
Moon Transit: 8:28 AM
Moonset: 1:45 PM
Moon Phase: Last Quarter
Moon Illumination: 22.0%

Best Times for Fishing or Hunting

Major Periods

7:58 AM - 10:28 AM
12:00 AM - 12:00 AM

Minor Periods

1:15 PM - 2:45 PM
2:44 AM - 4:14 AM

Action Rating: 2 out of 5

Monday, March 24, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 74.5°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 17.2 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 15.16 μg/m3
PM10: 23.07 μg/m3
Carbon Monoxide: 270.91 μg/m3
Nitrogen Dioxide: 0.84 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 101.52 μg/m3

Astronomical

Sunrise: 7:24 AM
Sun Transit: 12:00 AM
Sunset: 7:37 PM
Daylight: 12 hrs 14 mins
Moonrise: 4:03 AM
Moon Transit: 9:23 AM
Moonset: 2:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 13.4%

Best Times for Fishing or Hunting

Major Periods

8:53 AM - 11:23 AM
12:00 AM - 12:00 AM

Minor Periods

2:17 PM - 3:47 PM
3:33 AM - 5:03 AM

Action Rating: 2 out of 5

Tuesday, March 25, 2025

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 76°F
Average Humidity: 79%
Chance of Rain: 59%
Wind: 11.9 mph
UV Index: 5

Air Quality

AQI: 1 - Good
PM2.5: 15.06 μg/m3
PM10: 22.81 μg/m3
Carbon Monoxide: 260.28 μg/m3
Nitrogen Dioxide: 1.78 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 87.15 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:00 AM
Sunset: 7:38 PM
Daylight: 12 hrs 15 mins
Moonrise: 4:48 AM
Moon Transit: 10:17 AM
Moonset: 3:51 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.7%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

3:21 PM - 4:51 PM
4:18 AM - 5:48 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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