Water Temperature of the St. Johns River in Jacksonville, FL
Current Water Temperature
Measurement Time: Monday, October 13, 2025, 8:30 PM EDT
Temperature Locations
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Local Points of Interest
Riverfront Park; Marco LakeSponsored Content
Station Name: ST JOHNS RIVER BL MARCO LK AT JACKSONVILLE, FL
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 0 feet / 0 meters
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)
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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 (11.0 mi)
Julington Creek, Jacksonville, FL (12.4 mi)
Clapboard Creek, Jacksonville, FL (12.9 mi)
Weather for Jacksonville, Florida
Current Weather

Humidity: 90%
Feels Like: 69.1°F
Wind: NE 3.4 mph
Wind Gusts: 5.6 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Tue
H: 89°F
L: 64°F

Wed
H: 78°F
L: 69°F

Thu
H: 77°F
L: 69°F

Fri
H: 80°F
L: 66°F

Sat
H: 83°F
L: 66°F
Air Quality
Nitrogen Dioxide: 14.45 μg/m3
Sulphur Dioxide: 4.05 μg/m3
Ozone: 56 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 6:56 PM
Daylight: 11 hrs 28 mins
Moon Transit: 8:09 AM
Moonset: 3:20 PM
Moon Phase: Last Quarter
Moon Illumination: 39.8%
Best Times for Fishing or Hunting
Major Periods
7:39 AM - 10:09 AM9:14 PM - 11:44 PM
Minor Periods
2:50 PM - 4:20 PM12:21 AM - 1:51 AM
Action Rating: 3 out of 5
Rip Current Statement issued October 13 at 12:02PM EDT until October 14 at 6:00AM EDT by NWS Jacksonville FL
Effective: Mon October 13, 2025, 12:02 PM
Expires: Tue October 14, 2025, 6:00 AM
* WHAT...Dangerous rip currents. * WHERE...Coastal Duval County. * WHEN...Through late tonight. * 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 October 13 at 12:02PM EDT until October 14 at 6:00AM EDT by NWS Jacksonville FL
Effective: Mon October 13, 2025, 12:02 PM
Expires: Tue October 14, 2025, 6:00 AM
* WHAT...Dangerous rip currents. * WHERE...Southeast Georgia Beaches. * WHEN...Through late tonight. * 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.
Coastal Flood Advisory issued October 13 at 12:02PM EDT until October 15 at 6:00AM EDT by NWS Jacksonville FL
Effective: Mon October 13, 2025, 12:02 PM
Expires: Tue October 14, 2025, 6:00 AM
* WHAT...Minor coastal flooding. * WHERE...Eastern Clay and Western St. Johns Counties. * WHEN...Until 6 AM EDT Wednesday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Coastal Flood Advisory issued October 13 at 12:02PM EDT until October 15 at 6:00AM EDT by NWS Jacksonville FL
Effective: Mon October 13, 2025, 12:02 PM
Expires: Tue October 14, 2025, 6:00 AM
* WHAT...For the Coastal Flood Advisory, minor coastal flooding. For the High Rip Current Risk, dangerous rip currents. * WHERE...Coastal Flagler and Southeast Coastal St. Johns Counties. * WHEN...For the Coastal Flood Advisory, until 6 AM EDT Wednesday. For the High Rip Current Risk, through late tonight. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Rip currents can sweep even the best swimmers away from shore into deeper water.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. 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 October 13 at 12:02PM EDT until October 14 at 6:00AM EDT by NWS Jacksonville FL
Effective: Mon October 13, 2025, 12:02 PM
Expires: Tue October 14, 2025, 6:00 AM
* WHAT...Dangerous rip currents. * WHERE...Northeast Coastal St. Johns County. * WHEN...Through late tonight. * 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 October 13 at 12:02PM EDT until October 14 at 6:00AM EDT by NWS Jacksonville FL
Effective: Mon October 13, 2025, 12:02 PM
Expires: Tue October 14, 2025, 6:00 AM
* WHAT...For the Coastal Flood Advisory, minor coastal flooding. For the High Rip Current Risk, dangerous rip currents. * WHERE...Coastal Flagler and Southeast Coastal St. Johns Counties. * WHEN...For the Coastal Flood Advisory, until 6 AM EDT Wednesday. For the High Rip Current Risk, through late tonight. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Rip currents can sweep even the best swimmers away from shore into deeper water.
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. 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.
Weather Forecast
Average Temperature: 75.1°F
Average Humidity: 73%
Wind: 6.7 mph
UV Index: 1.6
Air Quality
Nitrogen Dioxide: 11.32 μg/m3
Sulphur Dioxide: 4.73 μg/m3
Ozone: 85.28 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 6:56 PM
Daylight: 11 hrs 28 mins
Moon Transit: 8:09 AM
Moonset: 3:20 PM
Moon Phase: Last Quarter
Moon Illumination: 39.8%
Best Times for Fishing or Hunting
Major Periods
7:39 AM - 10:09 AM9:14 PM - 11:44 PM
Minor Periods
2:50 PM - 4:20 PM12:21 AM - 1:51 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 72.4°F
Average Humidity: 77%
Wind: 12.3 mph
UV Index: 1.5
Air Quality
Nitrogen Dioxide: 14.99 μg/m3
Sulphur Dioxide: 5.74 μg/m3
Ozone: 84.48 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 6:55 PM
Daylight: 11 hrs 27 mins
Moon Transit: 9:00 AM
Moonset: 3:57 PM
Moon Phase: Last Quarter
Moon Illumination: 29.1%
Best Times for Fishing or Hunting
Major Periods
8:30 AM - 11:00 AM12:00 AM - 12:00 AM
Minor Periods
3:27 PM - 4:57 PM1:26 AM - 2:56 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 71.8°F
Average Humidity: 73%
Wind: 12.3 mph
UV Index: 1.5
Air Quality
Nitrogen Dioxide: 8.37 μg/m3
Sulphur Dioxide: 5.21 μg/m3
Ozone: 99.52 μg/m3
Astronomical
Sun Transit: 1:12 PM
Sunset: 6:54 PM
Daylight: 11 hrs 25 mins
Moon Transit: 9:47 AM
Moonset: 4:29 PM
Moon Phase: Last Quarter
Moon Illumination: 19.4%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:17 AM - 11:47 AM
Minor Periods
3:59 PM - 5:29 PM2:28 AM - 3:58 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 71.6°F
Average Humidity: 59%
Wind: 9.6 mph
UV Index: 1.5
Air Quality
Nitrogen Dioxide: 7.3 μg/m3
Sulphur Dioxide: 5.22 μg/m3
Ozone: 104.15 μg/m3
Astronomical
Sun Transit: 1:11 PM
Sunset: 6:53 PM
Daylight: 11 hrs 23 mins
Moon Transit: 10:31 AM
Moonset: 4:57 PM
Moon Phase: Waning Crescent
Moon Illumination: 11.3%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:01 AM - 12:31 AM
Minor Periods
4:27 PM - 5:57 PM3:27 AM - 4:57 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 72.1°F
Average Humidity: 60%
Wind: 9.8 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:11 PM
Sunset: 6:52 PM
Daylight: 11 hrs 21 mins
Moon Transit: 11:12 AM
Moonset: 5:23 PM
Moon Phase: Waning Crescent
Moon Illumination: 5.2%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:42 AM - 1:12 PM
Minor Periods
4:53 PM - 6:23 PM4:24 AM - 5:54 AM
Action Rating: 3 out of 5