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

Current Water Temperature

74.5°F

Measurement Time: Monday, October 13, 2025, 8:30 PM EDT

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 / 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)
Cedar River, Jacksonville, FL (5.0 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 (11.0 mi)
Julington Creek, Jacksonville, FL (12.4 mi)
Clapboard Creek, Jacksonville, FL (12.9 mi)

Weather for Jacksonville, Florida

Current Weather

69.1°F
Clear
Conditions: Clear
Humidity: 90%
Feels Like: 69.1°F
Wind: NE 3.4 mph
Wind Gusts: 5.6 mph
Pressure: 30 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0

Five Day Weather Forecast

Sunny
Tue
H: 89°F
L: 64°F
Partly Cloudy
Wed
H: 78°F
L: 69°F
Partly Cloudy
Thu
H: 77°F
L: 69°F
Sunny
Fri
H: 80°F
L: 66°F
Sunny
Sat
H: 83°F
L: 66°F

Air Quality

PM2.5: 8.45 μg/m3
PM10: 9.05 μg/m3
Carbon Monoxide: 194.85 μg/m3
Nitrogen Dioxide: 14.45 μg/m3
Sulphur Dioxide: 4.05 μg/m3
Ozone: 56 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 1:12 PM
Sunset: 6:56 PM
Daylight: 11 hrs 28 mins
Moonrise: 12:51 AM
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 AM
9:14 PM - 11:44 PM

Minor Periods

2:50 PM - 4:20 PM
12:21 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.


Tuesday, October 14, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 75.1°F
Average Humidity: 73%
Chance of Rain: 0%
Wind: 6.7 mph
UV Index: 1.6

Air Quality

AQI: 1 - Good
PM2.5: 7.78 μg/m3
PM10: 8.22 μg/m3
Carbon Monoxide: 262.05 μg/m3
Nitrogen Dioxide: 11.32 μg/m3
Sulphur Dioxide: 4.73 μg/m3
Ozone: 85.28 μg/m3

Astronomical

Sunrise: 7:28 AM
Sun Transit: 1:12 PM
Sunset: 6:56 PM
Daylight: 11 hrs 28 mins
Moonrise: 12:51 AM
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 AM
9:14 PM - 11:44 PM

Minor Periods

2:50 PM - 4:20 PM
12:21 AM - 1:51 AM

Action Rating: 3 out of 5

Wednesday, October 15, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 72.4°F
Average Humidity: 77%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 10.33 μg/m3
PM10: 11.14 μg/m3
Carbon Monoxide: 273.29 μg/m3
Nitrogen Dioxide: 14.99 μg/m3
Sulphur Dioxide: 5.74 μg/m3
Ozone: 84.48 μg/m3

Astronomical

Sunrise: 7:29 AM
Sun Transit: 1:12 PM
Sunset: 6:55 PM
Daylight: 11 hrs 27 mins
Moonrise: 1:56 AM
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 AM
12:00 AM - 12:00 AM

Minor Periods

3:27 PM - 4:57 PM
1:26 AM - 2:56 AM

Action Rating: 2 out of 5

Thursday, October 16, 2025

Weather Forecast

Conditions: Partly Cloudy
Average Temperature: 71.8°F
Average Humidity: 73%
Chance of Rain: 0%
Wind: 12.3 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 9.34 μg/m3
PM10: 11.21 μg/m3
Carbon Monoxide: 203.89 μg/m3
Nitrogen Dioxide: 8.37 μg/m3
Sulphur Dioxide: 5.21 μg/m3
Ozone: 99.52 μg/m3

Astronomical

Sunrise: 7:29 AM
Sun Transit: 1:12 PM
Sunset: 6:54 PM
Daylight: 11 hrs 25 mins
Moonrise: 2:58 AM
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 AM
9:17 AM - 11:47 AM

Minor Periods

3:59 PM - 5:29 PM
2:28 AM - 3:58 AM

Action Rating: 2 out of 5

Friday, October 17, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 71.6°F
Average Humidity: 59%
Chance of Rain: 0%
Wind: 9.6 mph
UV Index: 1.5

Air Quality

AQI: 1 - Good
PM2.5: 11.49 μg/m3
PM10: 14.43 μg/m3
Carbon Monoxide: 193.31 μg/m3
Nitrogen Dioxide: 7.3 μg/m3
Sulphur Dioxide: 5.22 μg/m3
Ozone: 104.15 μg/m3

Astronomical

Sunrise: 7:30 AM
Sun Transit: 1:11 PM
Sunset: 6:53 PM
Daylight: 11 hrs 23 mins
Moonrise: 3:57 AM
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 AM
10:01 AM - 12:31 AM

Minor Periods

4:27 PM - 5:57 PM
3:27 AM - 4:57 AM

Action Rating: 2 out of 5

Saturday, October 18, 2025

Weather Forecast

Conditions: Sunny
Average Temperature: 72.1°F
Average Humidity: 60%
Chance of Rain: 0%
Wind: 9.8 mph
UV Index: 0

Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:31 AM
Sun Transit: 1:11 PM
Sunset: 6:52 PM
Daylight: 11 hrs 21 mins
Moonrise: 4:54 AM
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 AM
10:42 AM - 1:12 PM

Minor Periods

4:53 PM - 6:23 PM
4:24 AM - 5:54 AM

Action Rating: 3 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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