Water Temperature of Long Sound Near Key Largo, FL

Current Water Temperature

74.1°F

Measurement Time: Thursday, December 25, 2025, 5:00 PM EST

Temperature Locations

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Local Points of Interest

Little Blackwater Sound; Florida Bay; Barnes Sound; Florida Keys National Marine Sactuary; Everglades National Park; Florida Keys; Gulf of Mexico

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Long Sound

Station Name: Long Sound, FL
Station Type: Fixed
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet

Nearest Address:
Offshore
Key Largo, FL 33037
Monroe County

GPS Coordinates: 25.235, -80.457

Nearby Water Temperatures

West Highway Creek, Key Largo, FL (0.8 mi)
Little Blackwater Sound, Key Largo, FL (2.1 mi)
Manatee Bay, Homestead, FL (2.2 mi)
Joe Bay, Key Largo, FL (4.2 mi)
Joe Bay, Key Largo, FL (5.3 mi)
Barnes Sound, Key Largo, FL (5.3 mi)
Mud Creek, Homestead, FL (8.2 mi)
Florida Bay, Key Largo, FL (10.9 mi)
Little Madeira Bay, Homestead, FL (11.7 mi)
Taylor River, Homestead, FL (11.8 mi)
Taylor River, Homestead, FL (12.1 mi)
Taylor Slough, Homestead, FL (14.2 mi)
Seven Palm Lake, Flamingo, FL (17.1 mi)
Mowry Canal Number C-103, Homestead, FL (17.7 mi)
Florida Bay, Islamorada, FL (20.1 mi)

Weather Near Key Largo, Florida

Current Weather

70.6°F
Clear
Conditions: Clear
Humidity: 82%
Heat Index: 75.8°F
Feels Like: 75.8°F
Wind: NW 5 mph
Wind Gusts: 9 mph
Wind Chill: 70.6°F
Air Pressure: 1019.4 millibars
Dew Point: 70.6°F
Chance of Precipitation: 0%
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 10 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Fri
H: 72°F
L: 70°F
Sunny
Sat
H: 73°F
L: 66°F
Partly Cloudy
Sun
H: 72°F
L: 70°F
Sunny
Mon
H: 73°F
L: 71°F
Sunny
Tue
H: 72°F
L: 69°F

Air Quality

PM2.5: 11.35 μg/m3
PM10: 14.35 μg/m3
Carbon Monoxide: 156.85 μg/m3
Nitrogen Dioxide: 15.85 μg/m3
Sulphur Dioxide: 5.05 μg/m3
Ozone: 54 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:22 AM
Sunset: 5:40 PM
Daylight: 10 hrs 34 mins
Moonrise: 11:32 AM
Moon Transit: 12:00 AM
Moonset: 11:50 PM
Moon Phase: First Quarter
Moon Illumination: 40.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:04 AM - 8:34 AM

Minor Periods

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

Action Rating: 2 out of 5

Friday, December 26, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 71.1°F
Average Humidity: 82%
Chance of Rain: 0%
Wind: 11 mph
UV Index: 1.1

Air Quality

AQI: 1 - Good
PM2.5: 10.45 μg/m3
PM10: 13.54 μg/m3
Carbon Monoxide: 144.53 μg/m3
Nitrogen Dioxide: 9.32 μg/m3
Sulphur Dioxide: 3.43 μg/m3
Ozone: 78.64 μg/m3

Astronomical

Sunrise: 7:05 AM
Sun Transit: 12:22 AM
Sunset: 5:40 PM
Daylight: 10 hrs 34 mins
Moonrise: 11:32 AM
Moon Transit: 12:00 AM
Moonset: 11:50 PM
Moon Phase: First Quarter
Moon Illumination: 40.5%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
6:04 AM - 8:34 AM

Minor Periods

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

Action Rating: 2 out of 5

Saturday, December 27, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 70.5°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 7.8 mph
UV Index: 1.1

Air Quality

AQI: 1 - Good
PM2.5: 9.29 μg/m3
PM10: 10.77 μg/m3
Carbon Monoxide: 145.69 μg/m3
Nitrogen Dioxide: 4.66 μg/m3
Sulphur Dioxide: 2.45 μg/m3
Ozone: 95.64 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:23 AM
Sunset: 5:40 PM
Daylight: 10 hrs 35 mins
Moonrise: 12:05 AM
Moon Transit: 4:23 AM
Moonset: 12:50 AM
Moon Phase: First Quarter
Moon Illumination: 51.8%

Best Times for Fishing or Hunting

Major Periods

3:53 AM - 6:23 AM
3:53 AM - 6:23 AM

Minor Periods

11:35 AM - 1:05 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Sunday, December 28, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 71.5°F
Average Humidity: 81%
Chance of Rain: 0%
Wind: 6.3 mph
UV Index: 1.1

Air Quality

AQI: 1 - Good
PM2.5: 11.75 μg/m3
PM10: 12.61 μg/m3
Carbon Monoxide: 150.61 μg/m3
Nitrogen Dioxide: 11.08 μg/m3
Sulphur Dioxide: 3.53 μg/m3
Ozone: 94.32 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:23 AM
Sunset: 5:41 PM
Daylight: 10 hrs 35 mins
Moonrise: 12:39 AM
Moon Transit: 7:11 PM
Moonset: 12:49 AM
Moon Phase: First Quarter
Moon Illumination: 63.0%

Best Times for Fishing or Hunting

Major Periods

7:35 AM - 10:05 AM
6:41 PM - 9:11 PM

Minor Periods

12:09 AM - 1:39 PM
12:19 AM - 1:49 AM

Action Rating: 3 out of 5

Monday, December 29, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 72.4°F
Average Humidity: 76%
Chance of Rain: 0%
Wind: 8.1 mph
UV Index: 1.1

Air Quality

AQI: 1 - Good
PM2.5: 8.5 μg/m3
PM10: 11.1 μg/m3
Carbon Monoxide: 127.47 μg/m3
Nitrogen Dioxide: 2.57 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 99.54 μg/m3

Astronomical

Sunrise: 7:06 AM
Sun Transit: 12:24 AM
Sunset: 5:42 PM
Daylight: 10 hrs 35 mins
Moonrise: 1:17 PM
Moon Transit: 8:03 PM
Moonset: 1:50 AM
Moon Phase: First Quarter
Moon Illumination: 73.5%

Best Times for Fishing or Hunting

Major Periods

8:25 AM - 10:55 AM
7:33 PM - 10:03 PM

Minor Periods

12:47 AM - 2:17 PM
1:20 AM - 2:50 AM

Action Rating: 2 out of 5

Tuesday, December 30, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 70°F
Average Humidity: 73%
Chance of Rain: 0%
Wind: 14.1 mph
UV Index: 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: 7:07 AM
Sun Transit: 12:24 AM
Sunset: 5:42 PM
Daylight: 10 hrs 35 mins
Moonrise: 2:01 PM
Moon Transit: 9:00 PM
Moonset: 2:57 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 82.8%

Best Times for Fishing or Hunting

Major Periods

9:20 AM - 11:50 AM
8:30 PM - 11:00 PM

Minor Periods

1:31 PM - 3:01 PM
2:27 AM - 3:57 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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