Water Temperature of Long Sound Near Key Largo, FL

Current Water Temperature

87.3°F

Measurement Time: Saturday, October 17, 2026, 2:00 AM EDT

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

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

83.4°F
Overcast
Conditions: Overcast
Humidity: 71%
Feels Like: 89.4°F
Wind: SSE 5.4 mph
Wind Gusts: 5.4 mph
Pressure: 29.93 in
Precipitation: 0 in
Cloud Cover: 88%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Light rain shower
Sat
H: 84°F
L: 79°F
Light rain shower
Sun
H: 81°F
L: 77°F
Patchy rain nearby
Mon
H: 82°F
L: 81°F

Air Quality

PM2.5: 3.6 μg/m3
PM10: 5.7 μg/m3
Carbon Monoxide: 96 μg/m3
Nitrogen Dioxide: 1.8 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 48 μg/m3

Astronomical

Sunrise: 7:21 AM
Sun Transit: 1:07 PM
Sunset: 6:53 PM
Daylight: 11 hrs 32 mins
Moonrise: 1:34 PM
Moon Transit: 6:50 PM
Moonset: 12:14 AM
Moon Phase: First Quarter
Moon Illumination: 37.1%

Best Times for Fishing or Hunting

Major Periods

7:14 AM - 9:44 AM
6:20 PM - 8:50 PM

Minor Periods

1:04 PM - 2:34 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Saturday, October 17, 2026

Weather Forecast

Conditions: Light rain shower
Average Temperature: 82.5°F
Average Humidity: 76%
Chance of Rain: 81%
Wind: 21.5 mph
UV Index: 7.5

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: 7:21 AM
Sun Transit: 1:07 PM
Sunset: 6:53 PM
Daylight: 11 hrs 32 mins
Moonrise: 1:34 PM
Moon Transit: 6:50 PM
Moonset: 12:14 AM
Moon Phase: First Quarter
Moon Illumination: 37.1%

Best Times for Fishing or Hunting

Major Periods

7:14 AM - 9:44 AM
6:20 PM - 8:50 PM

Minor Periods

1:04 PM - 2:34 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Sunday, October 18, 2026

Weather Forecast

Conditions: Light rain shower
Average Temperature: 79.4°F
Average Humidity: 82%
Chance of Rain: 87%
Wind: 32.4 mph
UV Index: 5.6

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: 7:22 AM
Sun Transit: 1:06 PM
Sunset: 6:52 PM
Daylight: 11 hrs 30 mins
Moonrise: 2:17 PM
Moon Transit: 7:38 PM
Moonset: 12:09 AM
Moon Phase: First Quarter
Moon Illumination: 48.3%

Best Times for Fishing or Hunting

Major Periods

8:03 AM - 10:33 AM
7:08 PM - 9:38 PM

Minor Periods

1:47 PM - 3:17 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, October 19, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 81°F
Average Humidity: 69%
Chance of Rain: 41%
Wind: 29.5 mph
UV Index: 6.4

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: 7:22 AM
Sun Transit: 1:06 PM
Sunset: 6:51 PM
Daylight: 11 hrs 29 mins
Moonrise: 2:55 PM
Moon Transit: 8:25 PM
Moonset: 1:04 AM
Moon Phase: First Quarter
Moon Illumination: 59.6%

Best Times for Fishing or Hunting

Major Periods

8:50 AM - 11:20 AM
7:55 PM - 10:25 PM

Minor Periods

2:25 PM - 3:55 PM
12:34 AM - 2:04 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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