Water Temperature of Little Blackwater Sound Near Key Largo, FL

Current Water Temperature

81.5°F 27.5°C
Warm Warm & Relaxing
81.5°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Water feels warm and inviting. Safe for extended immersion with virtually no thermal fatigue.

Measurement Time: Thursday, November 12, 2026, 2:00 PM EST

Temperature Locations

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Local Points of Interest

Everglades National Park; Long Sound; Florida Bay; Manatee Bay; Barnes Sound; Cross Key; Florida Keys National Marine Sactuary; Florida Keys; Gulf of Mexico; Overseas Hwy

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Little Blackwater Sound

Station Name: Little Blackwater, 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: 25.214, -80.432

Nearby Water Temperatures

Manatee Bay, Homestead, FL (1.8 mi)
Long Sound, Key Largo, FL (2.1 mi)
West Highway Creek, Key Largo, FL (2.2 mi)
Barnes Sound, Key Largo, FL (5.6 mi)
Joe Bay, Key Largo, FL (5.9 mi)
Joe Bay, Key Largo, FL (6.8 mi)
Mud Creek, Homestead, FL (9.5 mi)
Florida Bay, Key Largo, FL (10.3 mi)
Little Madeira Bay, Homestead, FL (12.8 mi)
Taylor River, Homestead, FL (13 mi)
Taylor River, Homestead, FL (13.6 mi)
Taylor Slough, Homestead, FL (15.9 mi)
Seven Palm Lake, Flamingo, FL (18.4 mi)
Mowry Canal Number C-103, Homestead, FL (18.6 mi)
Florida Bay, Islamorada, FL (20.2 mi)

Marine Weather for Little Blackwater Sound Near Key Largo, FL

Marine Weather

Coastal & Marine Conditions
Open-Meteo Marine
0.9ft 0.3 m
Calm / Flat Smooth waters with minimal wave motion.
Wave Period 2.9s
Wave Direction 206° SSW
Swell Waves
0.9 ft
2.3s • 210° SSW
Wind Waves / Chop
0.1 ft
0.5s • 265° W
Ocean Current
0.2 mph
0.2 kn • 90° E
Sea Surface Temp
82.6°F
Equivalent: 28.1°C

High & Low Tide Forecast

Rising (Flood)
Next Tide: High 8:00 PM (+0.2 ft)
0.0 ft (MSL) Wed, Nov 11 12 AM 6 AM 12 PM 6 PM 12 AM 6 AM Thu, Nov 12 Fri, Nov 13 ▲ High 9:00 PM +0.1 ft ▼ Low 4:00 AM -1.4 ft ▲ High 11:00 AM +0.0 ft ▼ Low 5:00 PM -0.8 ft ▲ High 8:00 PM +0.2 ft ▼ Low 10:00 PM +0.1 ft ▼ Low 5:00 AM -1.4 ft NOW
High Tide Wed, Nov 11
9:00 PM
+0.1 ft (0.04 m)
Low Tide Thu, Nov 12
4:00 AM
-1.4 ft (-0.42 m)
High Tide Thu, Nov 12
11:00 AM
+0.0 ft (0.00 m)
Low Tide Thu, Nov 12
5:00 PM
-0.8 ft (-0.23 m)
Open-Meteo Tidal Model (Mean Sea Level MSL datum) • Times in station local timezone.

5-Day Marine Wave Forecast

Today
Nov 12
1.2 ft
3.6s • SSE
Fri
Nov 13
0.8 ft
2.8s • SSW
Sat
Nov 14
1.2 ft
3.3s • NNE
Sun
Nov 15
1.9 ft
3.4s • NE
Mon
Nov 16
3.0 ft
4.4s • ENE

Weather Near Key Largo, Florida

Current Weather

80.6°F
Mainly Clear
Conditions: Mainly Clear
Humidity: 71%
Feels Like: 83.3°F
Wind: WNW 12.5 mph
Wind Gusts: 15 mph
Pressure: 29.81 in
Precipitation: 0 in
Cloud Cover: 22%
Visibility: 15.2 mi
UV Index: 0

Five-Day Weather Forecast

Overcast
Thu
H: 82°F
L: 77°F
Overcast
Fri
H: 81°F
L: 71°F
Overcast
Sat
H: 73°F
L: 60°F
Overcast
Sun
H: 77°F
L: 60°F
Light Drizzle
Mon
H: 78°F
L: 71°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
5.4 μg/m³
Good
PM10
8 μg/m³
Good
Ozone (O3)
71 μg/m³
Photochemical
NO2
1.1 μg/m³
Nitrogen Dioxide
SO2
0.9 μg/m³
Sulfur Dioxide
CO
113 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 58m daylight
Sunrise 6:37 AM
Solar Noon 12:05 PM
Sunset 5:35 PM
Moon
Waxing Crescent • 6%
Moonrise 9:40 AM
Transit 2:52 PM
Moonset 8:06 PM

Best Times for Fishing or Hunting

Major Periods

1:56 AM - 4:26 AM
2:22 PM - 4:52 PM

Minor Periods

9:10 AM - 10:40 AM
7:36 PM - 9:06 PM
Action Rating:
Fair Action 2/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 79.7°F
Average Humidity: 79%
Chance of Rain: 7%
Wind: 18.1 mph
UV Index: 5.4

Air Quality

EPA Index 1 • Good
PM2.5
6 μg/m³
Good
PM10
9.4 μg/m³
Good
Ozone (O3)
74.4 μg/m³
Photochemical
NO2
0.9 μg/m³
Nitrogen Dioxide
SO2
0.8 μg/m³
Sulfur Dioxide
CO
112.8 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 58m daylight
Sunrise 6:37 AM
Solar Noon 12:05 PM
Sunset 5:35 PM
Moon
Waxing Crescent • 6%
Moonrise 9:40 AM
Transit 2:52 PM
Moonset 8:06 PM

Best Times for Fishing or Hunting

Major Periods

1:56 AM - 4:26 AM
2:22 PM - 4:52 PM

Minor Periods

9:10 AM - 10:40 AM
7:36 PM - 9:06 PM
Action Rating:
Fair Action 2/5
Friday, November 13, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 76.8°F
Average Humidity: 74%
Chance of Rain: 28%
Wind: 15.3 mph
UV Index: 5

Air Quality

EPA Index 1 • Good
PM2.5
7.4 μg/m³
Good
PM10
10.1 μg/m³
Good
Ozone (O3)
79.6 μg/m³
Photochemical
NO2
1.6 μg/m³
Nitrogen Dioxide
SO2
1 μg/m³
Sulfur Dioxide
CO
133.4 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 57m daylight
Sunrise 6:38 AM
Solar Noon 12:06 PM
Sunset 5:34 PM
Moon
Waxing Crescent • 13%
Moonrise 10:28 AM
Transit 3:43 PM
Moonset 9:00 PM

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
3:13 PM - 5:43 PM

Minor Periods

9:58 AM - 11:28 AM
8:30 PM - 10:00 PM
Action Rating:
Good Action 3/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 67.1°F
Average Humidity: 60%
Chance of Rain: 0%
Wind: 18 mph
UV Index: 5.9

Air Quality

EPA Index 1 • Good
PM2.5
7.7 μg/m³
Good
PM10
9.1 μg/m³
Good
Ozone (O3)
91.3 μg/m³
Photochemical
NO2
3 μg/m³
Nitrogen Dioxide
SO2
0.9 μg/m³
Sulfur Dioxide
CO
143.1 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 56m daylight
Sunrise 6:38 AM
Solar Noon 12:06 PM
Sunset 5:34 PM
Moon
Waxing Crescent • 21%
Moonrise 11:12 AM
Transit 4:31 PM
Moonset 9:55 PM

Best Times for Fishing or Hunting

Major Periods

3:37 AM - 6:07 AM
4:01 PM - 6:31 PM

Minor Periods

10:42 AM - 12:12 PM
9:25 PM - 10:55 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 68.4°F
Average Humidity: 64%
Chance of Rain: 3%
Wind: 14.7 mph
UV Index: 5.6

Air Quality

EPA Index 1 • Good
PM2.5
7.8 μg/m³
Good
PM10
10.4 μg/m³
Good
Ozone (O3)
84.2 μg/m³
Photochemical
NO2
4.1 μg/m³
Nitrogen Dioxide
SO2
0.8 μg/m³
Sulfur Dioxide
CO
127.9 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 54m daylight
Sunrise 6:39 AM
Solar Noon 12:06 PM
Sunset 5:33 PM
Moon
Waxing Crescent • 31%
Moonrise 11:51 AM
Transit 5:18 PM
Moonset 10:50 PM

Best Times for Fishing or Hunting

Major Periods

4:25 AM - 6:55 AM
4:48 PM - 7:18 PM

Minor Periods

11:21 AM - 12:51 PM
10:20 PM - 11:50 PM
Action Rating:
Good Action 3/5
Monday, November 16, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 73.8°F
Average Humidity: 68%
Chance of Rain: 15%
Wind: 20.3 mph
UV Index: 5.2

Air Quality

EPA Index 1 • Good
PM2.5
6.1 μg/m³
Good
PM10
9.8 μg/m³
Good
Ozone (O3)
93.3 μg/m³
Photochemical
NO2
1.1 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
119.6 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 53m daylight
Sunrise 6:40 AM
Solar Noon 12:06 PM
Sunset 5:33 PM
Moon
First Quarter • 42%
Moonrise 12:27 PM
Transit 6:02 PM
Moonset 11:44 PM

Best Times for Fishing or Hunting

Major Periods

5:10 AM - 7:40 AM
5:32 PM - 8:02 PM

Minor Periods

11:57 AM - 1:27 PM
11:14 PM - 12:44 AM
Action Rating:
Good Action 3/5
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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