Water Temperature of the St. Johns River in Jacksonville, FL

Current Water Temperature

68.0°F 20.0°C
Cool Brisk & Refreshing
68.0°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Feels brisk on entry. Great for short dips; wetsuit recommended for extended swimming or water sports.

Measurement Time: Saturday, November 14, 2026, 4:30 PM EST

Temperature Locations

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Local Points of Interest

Riverfront Park; Marco Lake

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St. Johns River

Station Name: ST JOHNS RIVER BL MARCO LK AT JACKSONVILLE, FL
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
1799 River Rd
Jacksonville, FL 32207
Duval County

GPS Coordinates: 30.30478056, -81.6601

Nearby Water Temperatures

St. Johns River, Jacksonville, FL (1.3 mi)
St. Johns River, Jacksonville, FL (3.7 mi)
St. Johns River, Jacksonville, FL (4.5 mi)
Cedar River, Jacksonville, FL (5 mi)
Pottsburg Creek, Jacksonville, FL (5.5 mi)
St. Johns River, Jacksonville, FL (7.9 mi)
St. Johns River, Jacksonville, FL (8.3 mi)
St. Johns River, Jacksonville, FL (8.3 mi)
Ortega River, Jacksonville, FL (8.3 mi)
St. Johns River, Orange Park, FL (8.7 mi)
Broward River, Jacksonville, FL (9.6 mi)
Trout River, Jacksonville, FL (10.8 mi)
Dunn Creek, Jacksonville, FL (11 mi)
Julington Creek, Jacksonville, FL (12.4 mi)
Clapboard Creek, Jacksonville, FL (12.9 mi)

Weather for Jacksonville, Florida

Current Weather

49.8°F
Clear
Conditions: Clear
Humidity: 73%
Feels Like: 45.3°F
Wind: NW 5.9 mph
Wind Gusts: 7.1 mph
Pressure: 30.19 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 13.7 mi
UV Index: 0

Five-Day Weather Forecast

Mainly Sunny
Sat
H: 61°F
L: 42°F
Overcast
Sun
H: 65°F
L: 43°F
Light Drizzle
Mon
H: 66°F
L: 49°F
Light Drizzle
Tue
H: 70°F
L: 61°F
Moderate Drizzle
Wed
H: 72°F
L: 63°F

Air Quality

EPA Index 1 • Good

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

PM2.5
6.2 μg/m³
Good
PM10
6.5 μg/m³
Good
Ozone (O3)
63 μg/m³
Photochemical
NO2
9.7 μg/m³
Nitrogen Dioxide
SO2
0.9 μg/m³
Sulfur Dioxide
CO
239 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 38m daylight
Sunrise 6:52 AM
Solar Noon 12:11 PM
Sunset 5:30 PM
Moon
Waxing Crescent • 21%
Moonrise 11:29 AM
Transit 4:37 PM
Moonset 9:48 PM

Best Times for Fishing or Hunting

Major Periods

3:42 AM - 6:12 AM
4:07 PM - 6:37 PM

Minor Periods

10:59 AM - 12:29 PM
9:18 PM - 10:48 PM
Action Rating:
Fair Action 2/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Mainly Sunny
Average Temperature: 51.8°F
Average Humidity: 56%
Chance of Rain: 0%
Wind: 10.4 mph
UV Index: 4.9

Air Quality

EPA Index 1 • Good
PM2.5
4.1 μg/m³
Good
PM10
4.3 μg/m³
Good
Ozone (O3)
61.6 μg/m³
Photochemical
NO2
5 μg/m³
Nitrogen Dioxide
SO2
0.8 μg/m³
Sulfur Dioxide
CO
173.8 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 38m daylight
Sunrise 6:52 AM
Solar Noon 12:11 PM
Sunset 5:30 PM
Moon
Waxing Crescent • 21%
Moonrise 11:29 AM
Transit 4:37 PM
Moonset 9:48 PM

Best Times for Fishing or Hunting

Major Periods

3:42 AM - 6:12 AM
4:07 PM - 6:37 PM

Minor Periods

10:59 AM - 12:29 PM
9:18 PM - 10:48 PM
Action Rating:
Fair Action 2/5
Sunday, November 15, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 52.5°F
Average Humidity: 65%
Chance of Rain: 0%
Wind: 11.9 mph
UV Index: 4.9

Air Quality

EPA Index 1 • Good
PM2.5
4.7 μg/m³
Good
PM10
5.7 μg/m³
Good
Ozone (O3)
71.8 μg/m³
Photochemical
NO2
4.4 μg/m³
Nitrogen Dioxide
SO2
0.9 μg/m³
Sulfur Dioxide
CO
159.3 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 37m daylight
Sunrise 6:53 AM
Solar Noon 12:11 PM
Sunset 5:30 PM
Moon
Waxing Crescent • 31%
Moonrise 12:07 PM
Transit 5:23 PM
Moonset 10:45 PM

Best Times for Fishing or Hunting

Major Periods

4:30 AM - 7:00 AM
4:53 PM - 7:23 PM

Minor Periods

11:37 AM - 1:07 PM
10:15 PM - 11:45 PM
Action Rating:
Good Action 3/5
Monday, November 16, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 58.1°F
Average Humidity: 66%
Chance of Rain: 4%
Wind: 13.4 mph
UV Index: 3.6

Air Quality

EPA Index 1 • Good
PM2.5
6.4 μg/m³
Good
PM10
8.8 μg/m³
Good
Ozone (O3)
77 μg/m³
Photochemical
NO2
3.3 μg/m³
Nitrogen Dioxide
SO2
0.7 μg/m³
Sulfur Dioxide
CO
158.9 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 36m daylight
Sunrise 6:53 AM
Solar Noon 12:11 PM
Sunset 5:29 PM
Moon
First Quarter • 42%
Moonrise 12:40 PM
Transit 6:07 PM
Moonset 11:42 PM

Best Times for Fishing or Hunting

Major Periods

5:15 AM - 7:45 AM
5:37 PM - 8:07 PM

Minor Periods

12:10 PM - 1:40 PM
11:12 PM - 12:42 AM
Action Rating:
Good Action 3/5
Tuesday, November 17, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 65.5°F
Average Humidity: 65%
Chance of Rain: 21%
Wind: 14.4 mph
UV Index: 3.5

Air Quality

EPA Index 1 • Good
PM2.5
8.6 μg/m³
Good
PM10
13 μg/m³
Good
Ozone (O3)
79.7 μg/m³
Photochemical
NO2
2.7 μg/m³
Nitrogen Dioxide
SO2
0.7 μg/m³
Sulfur Dioxide
CO
137.6 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 35m daylight
Sunrise 6:54 AM
Solar Noon 12:11 PM
Sunset 5:29 PM
Moon
First Quarter • 54%
Moonrise 1:10 PM
Transit 6:50 PM
Moonset 1:35 AM

Best Times for Fishing or Hunting

Major Periods

5:59 AM - 8:29 AM
6:20 PM - 8:50 PM

Minor Periods

1:05 AM - 2:35 AM
12:40 PM - 2:10 PM
Action Rating:
Fair Action 2/5
Wednesday, November 18, 2026

Weather Forecast

Conditions: Moderate Drizzle
Average Temperature: 66.9°F
Average Humidity: 73%
Chance of Rain: 27%
Wind: 14.1 mph
UV Index: 4.8

Air Quality

EPA Index 1 • Good
PM2.5
8 μg/m³
Good
PM10
12.3 μg/m³
Good
Ozone (O3)
86 μg/m³
Photochemical
NO2
2.4 μg/m³
Nitrogen Dioxide
SO2
0.6 μg/m³
Sulfur Dioxide
CO
138.3 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 33m daylight
Sunrise 6:55 AM
Solar Noon 12:11 PM
Sunset 5:28 PM
Moon
First Quarter • 65%
Moonrise 1:38 PM
Transit 7:33 PM
Moonset 12:39 AM

Best Times for Fishing or Hunting

Major Periods

6:42 AM - 9:12 AM
7:03 PM - 9:33 PM

Minor Periods

12:09 AM - 1:39 AM
1:08 PM - 2:38 PM
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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