Water Temperature of Long Sound Near Key Largo, FL

Current Water Temperature

83.8°F

Measurement Time: Monday, June 8, 2026, 10:00 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

82.8°F
Clear
Clear
89.4°F
92.9°F
83%
NNE 20.8 mph
26.8 mph
84.4°F
75.3°F
0 in
0%
9 mi
1019 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 89°F
L: 82°F
Partly Cloudy
Thu
H: 85°F
L: 81°F
Sunny
Fri
H: 85°F
L: 83°F
Sunny
Sat
H: 85°F
L: 83°F
Sunny
Sun
H: 84°F
L: 81°F

Air Quality

AQI: 1 - Good
PM2.5: 10.2 μg/m3
PM10: 22.7 μg/m3
Carbon Monoxide: 94 μg/m3
Nitrogen Dioxide: 3.7 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 6:41 AM
Sun Transit: 1:27 PM
Sunset: 8:15 PM
Daylight: 13 hrs 33 mins
Moonrise: 7:54 AM
Moon Transit: 2:48 PM
Moonset: 9:36 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

3:09 AM - 5:39 AM
2:18 PM - 4:48 PM

Minor Periods

9:06 PM - 10:36 PM
7:24 AM - 8:54 AM

Action Rating: 3 out of 5

Coastal Flood Statement issued July 14 at 5:18PM EDT until July 15 at 12:00PM EDT by NWS Key West FL

Effective: Tue July 14, 2026, 5:18 PM
Expires: Wed July 15, 2026, 5:00 AM

* WHAT...Minor saltwater flooding. * WHERE...Lower Florida Keys. * WHEN...Through Wednesday afternoon. * IMPACTS...Minor saltwater flooding of low elevation streets and lots is likely. Some storm drains will overflow, and some seawalls and docks will be overtopped. Boaters can expect less clearance under fixed bridges. Motorists should remember that persistent puddles around the times of high tide are almost certain to contain a mix of saltwater.

Do not drive through flooded roadways.
Wednesday, July 15, 2026

Weather Forecast

Sunny
89.4°F
81.7°F
84.9°F
74%
0 in
8%
0%
23.7 mph
10.6


Air Quality

AQI: 1 - Good
PM2.5: 9.65 μg/m3
PM10: 25.36 μg/m3
Carbon Monoxide: 95.54 μg/m3
Nitrogen Dioxide: 1.73 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 67.71 μg/m3

Astronomical

Sunrise: 6:41 AM
Sun Transit: 1:27 PM
Sunset: 8:15 PM
Daylight: 13 hrs 33 mins
Moonrise: 7:54 AM
Moon Transit: 2:48 PM
Moonset: 9:36 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

3:09 AM - 5:39 AM
2:18 PM - 4:48 PM

Minor Periods

9:06 PM - 10:36 PM
7:24 AM - 8:54 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Partly Cloudy
85.2°F
81°F
84.2°F
70%
0 in
8%
0%
13 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 14.28 μg/m3
PM10: 35.46 μg/m3
Carbon Monoxide: 96 μg/m3
Nitrogen Dioxide: 1.19 μg/m3
Sulphur Dioxide: 0.56 μg/m3
Ozone: 60.83 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:27 PM
Sunset: 8:14 PM
Daylight: 13 hrs 33 mins
Moonrise: 9:01 AM
Moon Transit: 3:41 PM
Moonset: 10:16 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

4:05 AM - 6:35 AM
3:11 PM - 5:41 PM

Minor Periods

9:46 PM - 11:16 PM
8:31 AM - 10:01 AM

Action Rating: 4 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
84.8°F
83.3°F
84.2°F
71%
0 in
7%
0%
11.9 mph
11.7


Air Quality

AQI: 2 - Moderate
PM2.5: 16.09 μg/m3
PM10: 35.83 μg/m3
Carbon Monoxide: 97.25 μg/m3
Nitrogen Dioxide: 1.2 μg/m3
Sulphur Dioxide: 0.61 μg/m3
Ozone: 61.71 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 1:28 PM
Sunset: 8:14 PM
Daylight: 13 hrs 32 mins
Moonrise: 10:04 AM
Moon Transit: 4:30 PM
Moonset: 10:50 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

4:55 AM - 7:25 AM
4:00 PM - 6:30 PM

Minor Periods

10:20 PM - 11:50 PM
9:34 AM - 11:04 AM

Action Rating: 2 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
84.5°F
83.1°F
83.8°F
71%
0.03 in
36%
0%
8.7 mph
11.8


Air Quality

AQI: 1 - Good
PM2.5: 11.2 μg/m3
PM10: 24.58 μg/m3
Carbon Monoxide: 87.82 μg/m3
Nitrogen Dioxide: 1.24 μg/m3
Sulphur Dioxide: 0.49 μg/m3
Ozone: 49.54 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:28 PM
Sunset: 8:14 PM
Daylight: 13 hrs 31 mins
Moonrise: 11:03 AM
Moon Transit: 5:15 PM
Moonset: 11:22 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

5:42 AM - 8:12 AM
4:45 PM - 7:15 PM

Minor Periods

12:00 AM - 12:00 AM
10:33 AM - 12:03 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
84.2°F
81.4°F
83.4°F
70%
0.32 in
67%
0%
8.7 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 10.68 μg/m3
PM10: 24.32 μg/m3
Carbon Monoxide: 91.44 μg/m3
Nitrogen Dioxide: 0.93 μg/m3
Sulphur Dioxide: 0.46 μg/m3
Ozone: 39.78 μg/m3

Astronomical

Sunrise: 6:43 AM
Sun Transit: 1:28 PM
Sunset: 8:13 PM
Daylight: 13 hrs 30 mins
Moonrise: 12:00 AM
Moon Transit: 6:00 PM
Moonset: 12:22 AM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

6:26 AM - 8:56 AM
5:30 PM - 8:00 PM

Minor Periods

11:30 AM - 1:00 PM
12:00 AM - 12:00 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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