Water Temperature of the Florida Bay Near Key Largo, FL
Current Water Temperature
Measurement Time: Saturday, September 13, 2025, 10:00 AM EDT
Temperature Locations
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Local Points of Interest
Butternut Key; Florida Bay; Everglades National Park; Gulf of Mexico; Atlantic OceanSponsored Content
Station Name: Butternut Key, 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: 25.087, -80.519
Nearby Water Temperatures
Little Madeira Bay, Homestead, FL (9.4 mi)Joe Bay, Key Largo, FL (9.6 mi)
Joe Bay, Key Largo, FL (10.1 mi)
Little Blackwater Sound, Key Largo, FL (10.3 mi)
Taylor River, Homestead, FL (10.4 mi)
Long Sound, Key Largo, FL (10.9 mi)
Florida Bay, Islamorada, FL (11.0 mi)
West Highway Creek, Key Largo, FL (11.6 mi)
Manatee Bay, Homestead, FL (12.1 mi)
Taylor River, Homestead, FL (12.2 mi)
Whipray Basin, Islamorada, FL (13.6 mi)
Seven Palm Lake, Flamingo, FL (14.1 mi)
Taylor Slough, Homestead, FL (15.4 mi)
Barnes Sound, Key Largo, FL (15.9 mi)
Florida Bay, Islamorada, FL (18.4 mi)
Weather Near Key Largo, Florida
Current Weather

Humidity: 69%
Feels Like: 94.1°F
Wind: NE 8.1 mph
Wind Gusts: 12.2 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 1.8
Five Day Weather Forecast

Sat
H: 83°F
L: 80°F

Sun
H: 82°F
L: 78°F

Mon
H: 84°F
L: 82°F

Tue
H: 85°F
L: 84°F

Wed
H: 83°F
L: 82°F
Air Quality
Nitrogen Dioxide: 2.04 μg/m3
Sulphur Dioxide: 2.04 μg/m3
Ozone: 96 μg/m3
Astronomical
Sun Transit: 1:17 PM
Sunset: 7:28 PM
Daylight: 12 hrs 20 mins
Moon Transit: 6:10 AM
Moonset: 1:23 PM
Moon Phase: Waning Gibbous
Moon Illumination: 56.4%
Best Times for Fishing or Hunting
Major Periods
5:40 AM - 8:10 AM7:30 PM - 10:00 PM
Minor Periods
12:53 AM - 2:23 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Coastal Flood Statement issued September 13 at 3:51AM EDT until September 14 at 6:00AM EDT by NWS Key West FL
Effective: Sat September 13, 2025, 3:51 AM
Expires: Sat September 13, 2025, 12:00 PM
* WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Through late tonight. * 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. Little improvement is expected, even at lower tides.
Do not drive through flooded roadways.
Coastal Flood Statement issued September 12 at 9:48PM EDT until September 13 at 4:00PM EDT by NWS Miami FL
Effective: Fri September 12, 2025, 9:48 PM
Expires: Sat September 13, 2025, 4:00 PM
* WHAT...Isolated minor coastal flooding. * WHERE...Coastal Palm Beach County, Coastal Broward County and Coastal Miami Dade County. * WHEN...Through Saturday afternoon. * IMPACTS...Some water on low lying roads and property.
Do not drive through flooded roadways.
Coastal Flood Statement issued September 12 at 9:48PM EDT until September 13 at 4:00PM EDT by NWS Miami FL
Effective: Fri September 12, 2025, 9:48 PM
Expires: Sat September 13, 2025, 4:00 PM
* WHAT...Isolated minor coastal flooding. * WHERE...Coastal Palm Beach County, Coastal Broward County and Coastal Miami Dade County. * WHEN...Through Saturday afternoon. * IMPACTS...Some water on low lying roads and property.
Do not drive through flooded roadways.
Coastal Flood Statement issued September 13 at 3:51AM EDT until September 14 at 6:00AM EDT by NWS Key West FL
Effective: Sat September 13, 2025, 3:51 AM
Expires: Sat September 13, 2025, 12:00 PM
* WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Through late tonight. * 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. Little improvement is expected, even at lower tides.
Do not drive through flooded roadways.
Coastal Flood Statement issued September 13 at 3:51AM EDT until September 14 at 6:00AM EDT by NWS Key West FL
Effective: Sat September 13, 2025, 3:51 AM
Expires: Sat September 13, 2025, 12:00 PM
* WHAT...Minor saltwater flooding. * WHERE...Upper Florida Keys. * WHEN...Through late tonight. * 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. Little improvement is expected, even at lower tides.
Do not drive through flooded roadways.
Weather Forecast
Average Temperature: 81.4°F
Average Humidity: 78%
Wind: 12.1 mph
UV Index: 1
Air Quality
Nitrogen Dioxide: 10.15 μg/m3
Sulphur Dioxide: 3.71 μg/m3
Ozone: 73.48 μg/m3
Astronomical
Sun Transit: 1:17 PM
Sunset: 7:28 PM
Daylight: 12 hrs 20 mins
Moon Transit: 6:10 AM
Moonset: 1:23 PM
Moon Phase: Waning Gibbous
Moon Illumination: 56.4%
Best Times for Fishing or Hunting
Major Periods
5:40 AM - 8:10 AM7:30 PM - 10:00 PM
Minor Periods
12:53 AM - 2:23 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 80.1°F
Average Humidity: 85%
Wind: 8.1 mph
UV Index: 2.4
Air Quality
Nitrogen Dioxide: 4.55 μg/m3
Sulphur Dioxide: 1.8 μg/m3
Ozone: 81.64 μg/m3
Astronomical
Sun Transit: 1:17 PM
Sunset: 7:26 PM
Daylight: 12 hrs 19 mins
Moon Transit: 7:12 AM
Moonset: 2:29 PM
Moon Phase: Last Quarter
Moon Illumination: 45.1%
Best Times for Fishing or Hunting
Major Periods
6:42 AM - 9:12 AM8:32 PM - 11:02 PM
Minor Periods
1:59 PM - 3:29 PM12:00 AM - 12:00 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 82.9°F
Average Humidity: 83%
Wind: 10.7 mph
UV Index: 2.4
Air Quality
Nitrogen Dioxide: 1.44 μg/m3
Sulphur Dioxide: 0.46 μg/m3
Ozone: 81.08 μg/m3
Astronomical
Sun Transit: 1:17 PM
Sunset: 7:25 PM
Daylight: 12 hrs 17 mins
Moon Transit: 8:13 AM
Moonset: 3:28 PM
Moon Phase: Last Quarter
Moon Illumination: 34.0%
Best Times for Fishing or Hunting
Major Periods
7:43 AM - 10:13 AM12:00 AM - 12:00 AM
Minor Periods
2:58 PM - 4:28 PM12:28 AM - 1:58 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 84.2°F
Average Humidity: 73%
Wind: 19.2 mph
UV Index: 2.4
Air Quality
Nitrogen Dioxide: 8.42 μg/m3
Sulphur Dioxide: 2.3 μg/m3
Ozone: 74.8 μg/m3
Astronomical
Sun Transit: 1:16 PM
Sunset: 7:24 PM
Daylight: 12 hrs 16 mins
Moon Transit: 9:12 AM
Moonset: 4:20 PM
Moon Phase: Last Quarter
Moon Illumination: 23.8%
Best Times for Fishing or Hunting
Major Periods
8:42 AM - 11:12 AM12:00 AM - 12:00 AM
Minor Periods
3:50 PM - 5:20 PM1:32 AM - 3:02 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 83°F
Average Humidity: 74%
Wind: 18.8 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 4.67 μg/m3
Sulphur Dioxide: 0.84 μg/m3
Ozone: 60.54 μg/m3
Astronomical
Sun Transit: 1:16 PM
Sunset: 7:23 PM
Daylight: 12 hrs 14 mins
Moon Transit: 10:07 AM
Moonset: 5:04 PM
Moon Phase: Waning Crescent
Moon Illumination: 14.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:37 AM - 12:07 AM
Minor Periods
4:34 PM - 6:04 PM2:36 AM - 4:06 AM
Action Rating: 2 out of 5