Water Temperature of the Gulf of Mexico in Marathon, FL

Current Water Temperature

79.5°F

Measurement Time: Sunday, April 20, 2025, 6:00 PM EDT

Today's Tides

 Low: April 20, 12:32 AM, -0.43 ft
High: April 20, 6:48 PM, 0.72 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

82°F
Sunny
Conditions: Sunny
Humidity: 53%
Feels Like: 87.6°F
Wind: E 21.9 mph
Wind Gusts: 30.4 mph
Pressure: 30.1 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 1.4

Five Day Weather Forecast

Partly Cloudy
Sun
H: 79°F
L: 75°F
Cloudy
Mon
H: 75°F
L: 73°F
Overcast
Tue
H: 73°F
L: 72°F
Partly Cloudy
Wed
H: 77°F
L: 73°F
Partly Cloudy
Thu
H: 77°F
L: 76°F

Air Quality

AQI: 2 - Moderate
PM2.5: 11.29 μg/m3
PM10: 18.87 μg/m3
Carbon Monoxide: 249.75 μg/m3
Nitrogen Dioxide: 0.74 μg/m3
Sulphur Dioxide: 0.37 μg/m3
Ozone: 101 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 1:23 PM
Sunset: 7:49 PM
Daylight: 12 hrs 51 mins
Moonrise: 1:57 AM
Moon Transit: 7:14 AM
Moonset: 12:35 AM
Moon Phase: Last Quarter
Moon Illumination: 37.8%

Best Times for Fishing or Hunting

Major Periods

6:44 AM - 9:14 AM
8:24 PM - 10:54 PM

Minor Periods

12:05 AM - 1:35 PM
1:27 AM - 2:57 AM

Action Rating: 3 out of 5

Sunday, April 20, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 76°F
Average Humidity: 70%
Chance of Rain: 0%
Wind: 23.9 mph
UV Index: 2.8

Air Quality

AQI: 2 - Moderate
PM2.5: 16.01 μg/m3
PM10: 25.89 μg/m3
Carbon Monoxide: 247.75 μg/m3
Nitrogen Dioxide: 0.73 μg/m3
Sulphur Dioxide: 0.31 μg/m3
Ozone: 103.92 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 1:23 PM
Sunset: 7:49 PM
Daylight: 12 hrs 51 mins
Moonrise: 1:57 AM
Moon Transit: 7:14 AM
Moonset: 12:35 AM
Moon Phase: Last Quarter
Moon Illumination: 37.8%

Best Times for Fishing or Hunting

Major Periods

6:44 AM - 9:14 AM
8:24 PM - 10:54 PM

Minor Periods

12:05 AM - 1:35 PM
1:27 AM - 2:57 AM

Action Rating: 3 out of 5

Monday, April 21, 2025

Weather Forecast

Conditions: Cloudy
Average Temperature: 74.4°F
Average Humidity: 75%
Chance of Rain: 0%
Wind: 24.6 mph
UV Index: 2.7

Air Quality

AQI: 1 - Good
PM2.5: 13.66 μg/m3
PM10: 22.83 μg/m3
Carbon Monoxide: 251.16 μg/m3
Nitrogen Dioxide: 0.58 μg/m3
Sulphur Dioxide: 0.25 μg/m3
Ozone: 105.04 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 1:23 PM
Sunset: 7:50 PM
Daylight: 12 hrs 53 mins
Moonrise: 2:42 AM
Moon Transit: 8:06 AM
Moonset: 1:36 PM
Moon Phase: Last Quarter
Moon Illumination: 27.2%

Best Times for Fishing or Hunting

Major Periods

7:36 AM - 10:06 AM
9:15 PM - 11:45 PM

Minor Periods

1:06 PM - 2:36 PM
2:12 AM - 3:42 AM

Action Rating: 2 out of 5

Tuesday, April 22, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 72.8°F
Average Humidity: 85%
Chance of Rain: 0%
Wind: 21.7 mph
UV Index: 2.5

Air Quality

AQI: 2 - Moderate
PM2.5: 16.81 μg/m3
PM10: 27.02 μg/m3
Carbon Monoxide: 252.27 μg/m3
Nitrogen Dioxide: 0.78 μg/m3
Sulphur Dioxide: 0.43 μg/m3
Ozone: 102.92 μg/m3

Astronomical

Sunrise: 6:56 AM
Sun Transit: 1:22 PM
Sunset: 7:50 PM
Daylight: 12 hrs 54 mins
Moonrise: 3:23 AM
Moon Transit: 8:57 AM
Moonset: 2:38 PM
Moon Phase: Last Quarter
Moon Illumination: 17.8%

Best Times for Fishing or Hunting

Major Periods

8:27 AM - 10:57 AM
12:00 AM - 12:00 AM

Minor Periods

2:08 PM - 3:38 PM
2:53 AM - 4:23 AM

Action Rating: 2 out of 5

Wednesday, April 23, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 74.8°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 22.4 mph
UV Index: 2.4

Air Quality

AQI: 2 - Moderate
PM2.5: 21.65 μg/m3
PM10: 31.69 μg/m3
Carbon Monoxide: 257.89 μg/m3
Nitrogen Dioxide: 0.81 μg/m3
Sulphur Dioxide: 0.4 μg/m3
Ozone: 100.68 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 1:22 PM
Sunset: 7:50 PM
Daylight: 12 hrs 55 mins
Moonrise: 4:01 AM
Moon Transit: 9:47 AM
Moonset: 3:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:17 AM - 11:47 AM

Minor Periods

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

Action Rating: 2 out of 5

Thursday, April 24, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 76.1°F
Average Humidity: 72%
Chance of Rain: 0%
Wind: 23.9 mph
UV Index: 0

Air Quality

AQI: 2 - Moderate
PM2.5: 18.73 μg/m3
PM10: 29.22 μg/m3
Carbon Monoxide: 246.19 μg/m3
Nitrogen Dioxide: 0.93 μg/m3
Sulphur Dioxide: 0.48 μg/m3
Ozone: 106.77 μg/m3

Astronomical

Sunrise: 6:54 AM
Sun Transit: 1:22 PM
Sunset: 7:51 PM
Daylight: 12 hrs 57 mins
Moonrise: 4:37 AM
Moon Transit: 10:36 AM
Moonset: 4:43 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.3%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
10:06 AM - 12:36 AM

Minor Periods

4:13 PM - 5:43 PM
4:07 AM - 5:37 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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