Water Temperature of Long Sound Near Key Largo, FL

Current Water Temperature

84.9°F

Measurement Time: Monday, May 12, 2025, 5:00 PM 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

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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 / 0 meters

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)
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)
Whipray Basin, Islamorada, FL (20.7 mi)

Weather Near Key Largo, Florida

Current Weather

75.7°F
Moderate or heavy rain with thunder
Conditions: Moderate or heavy rain with thunder
Humidity: 89%
Feels Like: 80.4°F
Wind: SSW 13.2 mph
Wind Gusts: 19.2 mph
Pressure: 29.94 in
Precipitation: 0.27 in
Cloud Cover: 100%
Visibility: 1 mi
UV Index: 0

Five Day Weather Forecast

Moderate rain
Tue
H: 83°F
L: 78°F
Fog
Wed
H: 77°F
L: 75°F
Fog
Thu
H: 77°F
L: 75°F
Sunny
Fri
H: 81°F
L: 76°F
Partly Cloudy
Sat
H: 80°F
L: 79°F

Air Quality

PM2.5: 6.29 μg/m3
PM10: 7.59 μg/m3
Carbon Monoxide: 234.95 μg/m3
Nitrogen Dioxide: 2.59 μg/m3
Sulphur Dioxide: 0.74 μg/m3
Ozone: 72 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 1:18 PM
Sunset: 7:59 PM
Daylight: 13 hrs 21 mins
Moonrise: 9:11 PM
Moon Transit: 1:37 AM
Moonset: 6:57 AM
Moon Phase: Full
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

1:07 AM - 3:37 AM
2:51 PM - 5:21 PM

Minor Periods

8:41 PM - 10:11 PM
6:27 AM - 7:57 AM

Action Rating: 4 out of 5

Flood Watch issued May 12 at 3:17PM EDT until May 13 at 8:00AM EDT by NWS Miami FL

Effective: Mon May 12, 2025, 3:17 PM
Expires: Tue May 13, 2025, 8:00 AM

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of southeast, southern, and southwest Florida, including the following areas, in southeast Florida, Coastal Broward County, Coastal Miami Dade County, Coastal Palm Beach County, Far South Miami-Dade County, Inland Broward County, Inland Miami-Dade County, Inland Palm Beach County, Metro Broward County, Metro Palm Beach County and Metropolitan Miami Dade. In southern Florida, Glades and Hendry. In southwest Florida, Coastal Collier County, Inland Collier County and Mainland Monroe. * WHEN...Through Tuesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Periods of moderate to heavy rain remain possible through this evening and tonight. So far, a general 1 to 3 inches has fallen with isolated amounts between 3 to 5 inches. Additional rainfall could exacerbate flooding. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
Tuesday, May 13, 2025

Weather Forecast

Conditions: Moderate rain
Average Temperature: 79.2°F
Average Humidity: 88%
Chance of Rain: 85%
Wind: 13.2 mph
UV Index: 2.9

Air Quality

AQI: 1 - Good
PM2.5: 5.19 μg/m3
PM10: 6.93 μg/m3
Carbon Monoxide: 240.43 μg/m3
Nitrogen Dioxide: 2.01 μg/m3
Sulphur Dioxide: 0.58 μg/m3
Ozone: 66.36 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 1:18 PM
Sunset: 7:59 PM
Daylight: 13 hrs 21 mins
Moonrise: 9:11 PM
Moon Transit: 1:37 AM
Moonset: 6:57 AM
Moon Phase: Full
Moon Illumination: 97.2%

Best Times for Fishing or Hunting

Major Periods

1:07 AM - 3:37 AM
2:51 PM - 5:21 PM

Minor Periods

8:41 PM - 10:11 PM
6:27 AM - 7:57 AM

Action Rating: 4 out of 5

Wednesday, May 14, 2025

Weather Forecast

Conditions: Fog
Average Temperature: 76.3°F
Average Humidity: 95%
Chance of Rain: 0%
Wind: 9.8 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good
PM2.5: 9.09 μg/m3
PM10: 12.81 μg/m3
Carbon Monoxide: 258.19 μg/m3
Nitrogen Dioxide: 3.43 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 90.64 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 1:18 PM
Sunset: 7:59 PM
Daylight: 13 hrs 22 mins
Moonrise: 10:08 PM
Moon Transit: 2:27 AM
Moonset: 7:41 AM
Moon Phase: Full
Moon Illumination: 92.3%

Best Times for Fishing or Hunting

Major Periods

1:57 AM - 4:27 AM
3:42 PM - 6:12 PM

Minor Periods

9:38 PM - 11:08 PM
7:11 AM - 8:41 AM

Action Rating: 3 out of 5

Thursday, May 15, 2025

Weather Forecast

Conditions: Fog
Average Temperature: 76.2°F
Average Humidity: 98%
Chance of Rain: 0%
Wind: 9.8 mph
UV Index: 2.7

Air Quality

AQI: 1 - Good
PM2.5: 6.79 μg/m3
PM10: 9.85 μg/m3
Carbon Monoxide: 231.47 μg/m3
Nitrogen Dioxide: 2.36 μg/m3
Sulphur Dioxide: 0.55 μg/m3
Ozone: 64.24 μg/m3

Astronomical

Sunrise: 6:37 AM
Sun Transit: 1:18 PM
Sunset: 8:00 PM
Daylight: 13 hrs 23 mins
Moonrise: 11:02 PM
Moon Transit: 3:19 AM
Moonset: 8:31 AM
Moon Phase: Waning Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

2:49 AM - 5:19 AM
4:35 PM - 7:05 PM

Minor Periods

12:00 AM - 12:00 AM
8:01 AM - 9:31 AM

Action Rating: 2 out of 5

Friday, May 16, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 79.2°F
Average Humidity: 79%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 2.8

Air Quality

AQI: 1 - Good
PM2.5: 6.87 μg/m3
PM10: 10.32 μg/m3
Carbon Monoxide: 214.6 μg/m3
Nitrogen Dioxide: 1.91 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 58.77 μg/m3

Astronomical

Sunrise: 6:37 AM
Sun Transit: 1:18 PM
Sunset: 8:00 PM
Daylight: 13 hrs 24 mins
Moonrise: 12:02 AM
Moon Transit: 4:13 AM
Moonset: 9:25 AM
Moon Phase: Waning Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

3:43 AM - 6:13 AM
5:30 PM - 8:00 PM

Minor Periods

8:55 AM - 10:25 AM
12:00 AM - 12:00 AM

Action Rating: 4 out of 5

Saturday, May 17, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 79.7°F
Average Humidity: 75%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 0.1

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: 6:36 AM
Sun Transit: 1:18 PM
Sunset: 8:01 PM
Daylight: 13 hrs 25 mins
Moonrise: 12:52 AM
Moon Transit: 5:06 AM
Moonset: 10:24 AM
Moon Phase: Waning Gibbous
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

4:36 AM - 7:06 AM
6:22 PM - 8:52 PM

Minor Periods

9:54 AM - 11:24 AM
12:00 AM - 12:00 AM

Action Rating: 3 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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