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

Current Water Temperature

81.0°F

Measurement Time: Friday, May 15, 2026, 11:30 AM EDT

Temperature Locations

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Local Points of Interest

Riverfront Park; Marco Lake

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

77.2°F
Partly cloudy
Partly cloudy
79.4°F
83.9°F
66%
ENE 10.1 mph
11.6 mph
81.2°F
66.5°F
0 in
75%
9 mi
1019 mbar
5.4

Five Day Weather Forecast

Sunny
Fri
H: 84°F
L: 63°F
Partly Cloudy
Sat
H: 90°F
L: 70°F
Patchy rain nearby
Sun
H: 89°F
L: 73°F
Patchy rain nearby
Mon
H: 89°F
L: 72°F
Moderate rain
Tue
H: 87°F
L: 73°F

Air Quality

AQI: 1 - Good
PM2.5: 13.65 μg/m3
PM10: 19.85 μg/m3
Carbon Monoxide: 200.85 μg/m3
Nitrogen Dioxide: 5.05 μg/m3
Sulphur Dioxide: 1.85 μg/m3
Ozone: 101 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:23 PM
Sunset: 8:14 PM
Daylight: 13 hrs 41 mins
Moonrise: 5:15 AM
Moon Transit: 12:11 AM
Moonset: 7:16 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:22 AM - 2:52 AM
11:41 AM - 2:11 PM

Minor Periods

6:46 PM - 8:16 PM
4:45 AM - 6:15 AM

Action Rating: 5 out of 5

Rip Current Statement issued May 15 at 12:01AM EDT until May 18 at 5:00AM EDT by NWS Jacksonville FL

Effective: Fri May 15, 2026, 12:01 AM
Expires: Sat May 16, 2026, 5:00 AM

* WHAT...Dangerous rip currents. * WHERE...Southeast Georgia and Northeast Florida Beaches. * WHEN...Through late Sunday night. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water.

Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.


Rip Current Statement issued May 15 at 2:20PM EDT until May 18 at 5:00AM EDT by NWS Jacksonville FL

Effective: Fri May 15, 2026, 2:20 PM
Expires: Sat May 16, 2026, 5:15 AM

* WHAT...Dangerous rip currents. * WHERE...Southeast Georgia and Northeast Florida Beaches. * WHEN...Through late Sunday night. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water.

Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.
Friday, May 15, 2026

Weather Forecast

Sunny
83.7°F
63.1°F
73.8°F
61%
0 in
0%
0%
10.7 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 9.69 μg/m3
PM10: 12.56 μg/m3
Carbon Monoxide: 182.37 μg/m3
Nitrogen Dioxide: 5.82 μg/m3
Sulphur Dioxide: 1.74 μg/m3
Ozone: 98.16 μg/m3

Astronomical

Sunrise: 6:33 AM
Sun Transit: 1:23 PM
Sunset: 8:14 PM
Daylight: 13 hrs 41 mins
Moonrise: 5:15 AM
Moon Transit: 12:11 AM
Moonset: 7:16 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

12:22 AM - 2:52 AM
11:41 AM - 2:11 PM

Minor Periods

6:46 PM - 8:16 PM
4:45 AM - 6:15 AM

Action Rating: 5 out of 5

Saturday, May 16, 2026

Weather Forecast

Partly Cloudy
90.3°F
69.9°F
78.8°F
66%
0 in
0%
0%
13.9 mph
9.1


Air Quality

AQI: 1 - Good
PM2.5: 13.77 μg/m3
PM10: 19.33 μg/m3
Carbon Monoxide: 166.49 μg/m3
Nitrogen Dioxide: 4.28 μg/m3
Sulphur Dioxide: 1.72 μg/m3
Ozone: 108.88 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 1:23 PM
Sunset: 8:15 PM
Daylight: 13 hrs 42 mins
Moonrise: 5:58 AM
Moon Transit: 1:10 PM
Moonset: 8:31 PM
Moon Phase: New
Moon Illumination: 2.0%

Best Times for Fishing or Hunting

Major Periods

1:19 AM - 3:49 AM
12:40 AM - 3:10 PM

Minor Periods

8:01 PM - 9:31 PM
5:28 AM - 6:58 AM

Action Rating: 5 out of 5

Sunday, May 17, 2026

Weather Forecast

Patchy rain nearby
88.5°F
73°F
79.8°F
65%
0.12 in
68%
0%
12.3 mph
9.7


Air Quality

AQI: 1 - Good
PM2.5: 13.78 μg/m3
PM10: 19.65 μg/m3
Carbon Monoxide: 154.29 μg/m3
Nitrogen Dioxide: 3.55 μg/m3
Sulphur Dioxide: 1.51 μg/m3
Ozone: 106.36 μg/m3

Astronomical

Sunrise: 6:32 AM
Sun Transit: 1:23 PM
Sunset: 8:15 PM
Daylight: 13 hrs 44 mins
Moonrise: 6:50 AM
Moon Transit: 2:15 PM
Moonset: 9:45 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

2:22 AM - 4:52 AM
1:45 PM - 4:15 PM

Minor Periods

9:15 PM - 10:45 PM
6:20 AM - 7:50 AM

Action Rating: 4 out of 5

Monday, May 18, 2026

Weather Forecast

Patchy rain nearby
89.4°F
72.2°F
79.4°F
72%
0.08 in
87%
0%
12.5 mph
9.8


Air Quality

AQI: 1 - Good
PM2.5: 13.96 μg/m3
PM10: 20.9 μg/m3
Carbon Monoxide: 159.55 μg/m3
Nitrogen Dioxide: 3.67 μg/m3
Sulphur Dioxide: 1.61 μg/m3
Ozone: 101.2 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:23 PM
Sunset: 8:16 PM
Daylight: 13 hrs 45 mins
Moonrise: 7:50 AM
Moon Transit: 3:22 PM
Moonset: 10:54 PM
Moon Phase: New
Moon Illumination: 2.6%

Best Times for Fishing or Hunting

Major Periods

3:28 AM - 5:58 AM
2:52 PM - 5:22 PM

Minor Periods

10:24 PM - 11:54 PM
7:20 AM - 8:50 AM

Action Rating: 3 out of 5

Tuesday, May 19, 2026

Weather Forecast

Moderate rain
87.4°F
72.7°F
79.3°F
73%
0.26 in
89%
0%
11.4 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 13.29 μg/m3
PM10: 19.63 μg/m3
Carbon Monoxide: 150.66 μg/m3
Nitrogen Dioxide: 6.1 μg/m3
Sulphur Dioxide: 1.51 μg/m3
Ozone: 75.15 μg/m3

Astronomical

Sunrise: 6:31 AM
Sun Transit: 1:23 PM
Sunset: 8:17 PM
Daylight: 13 hrs 46 mins
Moonrise: 8:59 AM
Moon Transit: 4:28 PM
Moonset: 11:53 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.4%

Best Times for Fishing or Hunting

Major Periods

4:35 AM - 7:05 AM
3:58 PM - 6:28 PM

Minor Periods

12:00 AM - 12:00 AM
8:29 AM - 9:59 AM

Action Rating: 2 out of 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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