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

Current Water Temperature

74.7°F 23.7°C
Comfortable Ideal for Swimming
74.7°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: Tuesday, November 10, 2026, 2:30 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

65.8°F
Overcast
Conditions: Overcast
Humidity: 73%
Feels Like: 65.8°F
Wind: SW 5.5 mph
Wind Gusts: 5.8 mph
Pressure: 30.11 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 13 mi
UV Index: 0

Weather Forecast

Overcast
Tue
H: 81°F
L: 56°F
Light Drizzle
Wed
H: 79°F
L: 62°F
Overcast
Thu
H: 77°F
L: 61°F
Overcast
Fri
H: 71°F
L: 56°F
Overcast
Sat
H: 65°F
L: 49°F

Air Quality

EPA Index 2 • Moderate

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

PM2.5
18.6 μg/m³
Moderate
PM10
19.3 μg/m³
Good
Ozone (O3)
73 μg/m³
Photochemical
NO2
25.5 μg/m³
Nitrogen Dioxide
SO2
1.5 μg/m³
Sulfur Dioxide
CO
359 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 44m daylight
Sunrise 6:48 AM
Solar Noon 12:10 PM
Sunset 5:32 PM
Moon
New • 0%
Moonrise 8:10 AM
Transit 1:14 PM
Moonset 6:17 PM

Best Times for Fishing or Hunting

Major Periods

12:19 AM - 2:49 AM
12:44 PM - 3:14 PM

Minor Periods

7:40 AM - 9:10 AM
5:47 PM - 7:17 PM
Action Rating:
Very Good 4/5
Tuesday, November 10, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 66.4°F
Average Humidity: 71%
Chance of Rain: 0%
Wind: 8.4 mph
UV Index: 5

Air Quality

EPA Index 2 • Moderate
PM2.5
17.9 μg/m³
Moderate
PM10
18.4 μg/m³
Good
Ozone (O3)
76.9 μg/m³
Photochemical
NO2
17.8 μg/m³
Nitrogen Dioxide
SO2
1.2 μg/m³
Sulfur Dioxide
CO
279.3 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 44m daylight
Sunrise 6:48 AM
Solar Noon 12:10 PM
Sunset 5:32 PM
Moon
New • 0%
Moonrise 8:10 AM
Transit 1:14 PM
Moonset 6:17 PM

Best Times for Fishing or Hunting

Major Periods

12:19 AM - 2:49 AM
12:44 PM - 3:14 PM

Minor Periods

7:40 AM - 9:10 AM
5:47 PM - 7:17 PM
Action Rating:
Very Good 4/5
Wednesday, November 11, 2026

Weather Forecast

Conditions: Light Drizzle
Average Temperature: 69.4°F
Average Humidity: 56%
Chance of Rain: 6%
Wind: 13 mph
UV Index: 4.9

Air Quality

EPA Index 2 • Moderate
PM2.5
10.1 μg/m³
Good
PM10
10.5 μg/m³
Good
Ozone (O3)
81.8 μg/m³
Photochemical
NO2
14.1 μg/m³
Nitrogen Dioxide
SO2
1.1 μg/m³
Sulfur Dioxide
CO
239.2 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 43m daylight
Sunrise 6:49 AM
Solar Noon 12:10 PM
Sunset 5:32 PM
Moon
New • 2%
Moonrise 9:07 AM
Transit 2:06 PM
Moonset 7:04 PM

Best Times for Fishing or Hunting

Major Periods

1:10 AM - 3:40 AM
1:36 PM - 4:06 PM

Minor Periods

8:37 AM - 10:07 AM
6:34 PM - 8:04 PM
Action Rating:
Good Action 3/5
Thursday, November 12, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 68.7°F
Average Humidity: 65%
Chance of Rain: 2%
Wind: 13 mph
UV Index: 3.3

Air Quality

EPA Index 2 • Moderate
PM2.5
5.8 μg/m³
Good
PM10
5.9 μg/m³
Good
Ozone (O3)
76 μg/m³
Photochemical
NO2
5.1 μg/m³
Nitrogen Dioxide
SO2
1 μg/m³
Sulfur Dioxide
CO
167.6 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 41m daylight
Sunrise 6:50 AM
Solar Noon 12:10 PM
Sunset 5:31 PM
Moon
Waxing Crescent • 6%
Moonrise 10:00 AM
Transit 2:57 PM
Moonset 7:57 PM

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
2:27 PM - 4:57 PM

Minor Periods

9:30 AM - 11:00 AM
7:27 PM - 8:57 PM
Action Rating:
Fair Action 2/5
Friday, November 13, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 63.5°F
Average Humidity: 37%
Chance of Rain: 0%
Wind: 11.6 mph
UV Index: 5

Air Quality

EPA Index 1 • Good
PM2.5
5 μg/m³
Good
PM10
5.4 μg/m³
Good
Ozone (O3)
74.9 μg/m³
Photochemical
NO2
4.2 μg/m³
Nitrogen Dioxide
SO2
1 μg/m³
Sulfur Dioxide
CO
157.5 μg/m³
Carbon Monoxide

Astronomical

Sun
10h 40m daylight
Sunrise 6:51 AM
Solar Noon 12:10 PM
Sunset 5:31 PM
Moon
Waxing Crescent • 13%
Moonrise 10:47 AM
Transit 3:48 PM
Moonset 8:52 PM

Best Times for Fishing or Hunting

Major Periods

2:53 AM - 5:23 AM
3:18 PM - 5:48 PM

Minor Periods

10:17 AM - 11:47 AM
8:22 PM - 9:52 PM
Action Rating:
Good Action 3/5
Saturday, November 14, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 56.8°F
Average Humidity: 34%
Chance of Rain: 0%
Wind: 8.3 mph
UV Index: 4.9

Air Quality

EPA Index 1 • Good
PM2.5
4 μg/m³
Good
PM10
4.5 μg/m³
Good
Ozone (O3)
65 μg/m³
Photochemical
NO2
5.1 μg/m³
Nitrogen Dioxide
SO2
1.1 μg/m³
Sulfur Dioxide
CO
162.2 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
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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