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

Current Water Temperature

75.0°F 23.9°C
Comfortable Ideal for Swimming
75.0°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Pleasant and refreshing. Ideal for recreational swimming, triathlons, and active water recreation without thermal gear.

Measurement Time: Thursday, November 5, 2026, 1:30 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

75.6°F
Clear
Conditions: Clear
Humidity: 79%
Feels Like: 79.3°F
Wind: ESE 5.8 mph
Wind Gusts: 11.7 mph
Pressure: 29.91 in
Precipitation: 0 in
Cloud Cover: 7%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Sunny
Thu
H: 89°F
L: 69°F
Sunny
Fri
H: 89°F
L: 70°F
Sunny
Sat
H: 82°F
L: 63°F

Air Quality

EPA Index 1 • Good

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

PM2.5
10.4 μg/m³
Good
PM10
14.4 μg/m³
Good
Ozone (O3)
58 μg/m³
Photochemical
NO2
12.3 μg/m³
Nitrogen Dioxide
SO2
0.9 μg/m³
Sulfur Dioxide
CO
258 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 51m daylight
Sunrise 6:44 AM
Solar Noon 12:10 PM
Sunset 5:36 PM
Moon
Waning Crescent • 11%
Moonrise 3:14 AM
Transit 9:22 AM
Moonset 3:23 PM

Best Times for Fishing or Hunting

Major Periods

8:52 AM - 11:22 AM
9:14 PM - 11:44 PM

Minor Periods

2:44 AM - 4:14 AM
2:53 PM - 4:23 PM
Action Rating:
Fair Action 2/5
Thursday, November 5, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 77.3°F
Average Humidity: 74%
Chance of Rain: 17%
Wind: 6 mph
UV Index: 4

Astronomical

Sun
10h 51m daylight
Sunrise 6:44 AM
Solar Noon 12:10 PM
Sunset 5:36 PM
Moon
Waning Crescent • 11%
Moonrise 3:14 AM
Transit 9:22 AM
Moonset 3:23 PM

Best Times for Fishing or Hunting

Major Periods

8:52 AM - 11:22 AM
9:14 PM - 11:44 PM

Minor Periods

2:44 AM - 4:14 AM
2:53 PM - 4:23 PM
Action Rating:
Fair Action 2/5
Friday, November 6, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 77.7°F
Average Humidity: 71%
Chance of Rain: 21%
Wind: 7.8 mph
UV Index: 5.3

Astronomical

Sun
10h 50m daylight
Sunrise 6:45 AM
Solar Noon 12:10 PM
Sunset 5:35 PM
Moon
Waning Crescent • 5%
Moonrise 4:13 AM
Transit 10:06 AM
Moonset 3:52 PM

Best Times for Fishing or Hunting

Major Periods

9:36 AM - 12:06 PM
9:58 PM - 12:28 AM

Minor Periods

3:43 AM - 5:13 AM
3:22 PM - 4:52 PM
Action Rating:
Fair Action 2/5
Saturday, November 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 71.9°F
Average Humidity: 54%
Chance of Rain: 5%
Wind: 6.9 mph
UV Index: 5

Astronomical

Sun
10h 48m daylight
Sunrise 6:46 AM
Solar Noon 12:10 PM
Sunset 5:34 PM
Moon
Waning Crescent • 1%
Moonrise 5:12 AM
Transit 10:50 AM
Moonset 4:23 PM

Best Times for Fishing or Hunting

Major Periods

10:20 AM - 12:50 PM
10:43 PM - 1:13 AM

Minor Periods

4:42 AM - 6:12 AM
3:53 PM - 5:23 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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