Water Temperature of the St. Johns River in Jacksonville, FL
Current Water Temperature
Measurement Time: Saturday, January 17, 2026, 9:06 AM EST
Today's Tides
Low: January 17, 12:49 AM, -0.1 ft
High: January 17, 7:41 AM, 4.5 ft
Low: January 17, 1:41 PM, 0.0 ft
High: January 17, 7:48 PM, 3.7 ft
Temperature Locations
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Local Points of Interest
Mayport, FL; Mayport Naval Station; Huguenot Memorial ParkStation Name: Mayport (Bar Pilots Dock)
Data Source: NOAA Tides and Currents
Elevation Above Sea Level: 0 feet
Sensor Depth: -6 feet
Nearest Address:
4910 Ocean St
Jacksonville, FL 32233
Duval County
GPS Coordinates: 30.398167, -81.427889
Nearby Water Temperatures
Clapboard Creek, Jacksonville, FL (6.7 mi)St. Johns River, Jacksonville, FL (7.8 mi)
St. Johns River, Jacksonville, FL (7.9 mi)
Dunn Creek, Jacksonville, FL (10.8 mi)
St. Johns River, Jacksonville, FL (11.4 mi)
Pottsburg Creek, Jacksonville, FL (11.4 mi)
Broward River, Jacksonville, FL (14.7 mi)
St. Johns River, Jacksonville, FL (15.1 mi)
St. Johns River, Jacksonville, FL (15.3 mi)
St. Johns River, Jacksonville, FL (16.3 mi)
Amelia River, Fernandina Beach, FL (19 mi)
Trout River, Jacksonville, FL (19.9 mi)
St. Johns River, Jacksonville, FL (20.2 mi)
Cedar River, Jacksonville, FL (20.3 mi)
Durbin Creek, Jacksonville, FL (20.5 mi)
Weather for Jacksonville, Florida
Current Weather

Five Day Weather Forecast

Sat
H: 68°F
L: 48°F

Sun
H: 62°F
L: 37°F

Mon
H: 53°F
L: 34°F

Tue
H: 55°F
L: 41°F

Wed
H: 53°F
L: 39°F
Air Quality
Nitrogen Dioxide: 4.75 μg/m3
Sulphur Dioxide: 6.25 μg/m3
Ozone: 101 μg/m3
Astronomical
Sun Transit: 12:35 AM
Sunset: 5:49 PM
Daylight: 10 hrs 27 mins
Moon Transit: 11:43 AM
Moonset: 4:46 PM
Moon Phase: New
Moon Illumination: 0.2%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:13 AM - 1:43 PM
Minor Periods
4:16 PM - 5:46 PM6:14 AM - 7:44 AM
Action Rating: 5 out of 5
Frost Advisory issued January 16 at 3:21PM EST until January 17 at 8:00AM EST by NWS Jacksonville FL
Effective: Fri January 16, 2026, 3:21 PM
Expires: Sat January 17, 2026, 8:00 AM
* WHAT...For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 23 possible. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...For the Frost Advisory, from 11 PM this evening to 8 AM EST Saturday. For the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
Freeze Watch issued January 16 at 3:21PM EST until January 19 at 9:00AM EST by NWS Jacksonville FL
Effective: Fri January 16, 2026, 3:21 PM
Expires: Sat January 17, 2026, 8:00 AM
* WHAT...For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Watch, sub-freezing temperatures as low as 23 possible. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...For the Frost Advisory, from 11 PM this evening to 8 AM EST Saturday. For the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Take steps now to protect tender plants from the cold.
Freeze Watch issued January 16 at 3:21PM EST until January 19 at 9:00AM EST by NWS Jacksonville FL
Effective: Fri January 16, 2026, 3:21 PM
Expires: Sat January 17, 2026, 8:00 AM
* WHAT...Sub-freezing temperatures as low as 28 possible. * WHERE...Portions of northeast Florida and southeast Georgia. * WHEN...From late Sunday night through Monday morning. * IMPACTS...Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them.
Take steps now to protect tender plants from the cold.
Freeze Warning issued January 16 at 8:57PM EST until January 17 at 7:00AM EST by NWS Jacksonville FL
Effective: Fri January 16, 2026, 8:57 PM
Expires: Sat January 17, 2026, 7:00 AM
* WHAT...For the Freeze Warning, sub-freezing temperatures as low as 31 expected. For the Freeze Watch, sub-freezing temperatures as low as 23 possible. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...For the Freeze Warning, until 7 AM EST Saturday. For the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them.
Take steps now to protect tender plants from the cold.
Freeze Watch issued January 16 at 8:57PM EST until January 19 at 9:00AM EST by NWS Jacksonville FL
Effective: Fri January 16, 2026, 8:57 PM
Expires: Sat January 17, 2026, 7:00 AM
* WHAT...Sub-freezing temperatures as low as 28 possible. * WHERE...Portions of northeast Florida and southeast Georgia. * WHEN...From late Sunday night through Monday morning. * IMPACTS...Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them.
Take steps now to protect tender plants from the cold.
Freeze Watch issued January 16 at 8:57PM EST until January 19 at 9:00AM EST by NWS Jacksonville FL
Effective: Fri January 16, 2026, 8:57 PM
Expires: Sat January 17, 2026, 7:00 AM
* WHAT...For the Freeze Warning, sub-freezing temperatures as low as 31 expected. For the Freeze Watch, sub-freezing temperatures as low as 23 possible. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...For the Freeze Warning, until 7 AM EST Saturday. For the Freeze Watch, from late Sunday night through Monday morning. * IMPACTS...Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them.
Take steps now to protect tender plants from the cold.
Freeze Watch issued January 17 at 5:28AM EST until January 19 at 9:00AM EST by NWS Jacksonville FL
Effective: Sat January 17, 2026, 5:28 AM
Expires: Sun January 18, 2026, 4:00 AM
* WHAT...Sub-freezing temperatures as low as 24 possible early on Monday morning. * WHERE...All of northeast and north central Florida and southeast Georgia. * WHEN...From late Sunday night through Monday morning. * IMPACTS...Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them.
Take steps now to protect tender plants from the cold.
Freeze Watch issued January 17 at 5:28AM EST until January 19 at 9:00AM EST by NWS Jacksonville FL
Effective: Sat January 17, 2026, 5:28 AM
Expires: Sun January 18, 2026, 4:00 AM
* WHAT...Sub-freezing temperatures as low as 23 possible early on Monday morning. * WHERE...All of northeast and north central Florida and southeast Georgia. * WHEN...From late Sunday night through Monday morning. * IMPACTS...Appropriate action should be taken to ensure tender vegetation and outdoor pets have adequate protection from the cold temperatures. Young children, the elderly and the homeless are especially vulnerable to the cold. Take measures to protect them.
Take steps now to protect tender plants from the cold.
Weather Forecast
Air Quality
Nitrogen Dioxide: 16.54 μg/m3
Sulphur Dioxide: 7.48 μg/m3
Ozone: 70.32 μg/m3
Astronomical
Sun Transit: 12:35 AM
Sunset: 5:49 PM
Daylight: 10 hrs 27 mins
Moon Transit: 11:43 AM
Moonset: 4:46 PM
Moon Phase: New
Moon Illumination: 0.2%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM11:13 AM - 1:43 PM
Minor Periods
4:16 PM - 5:46 PM6:14 AM - 7:44 AM
Action Rating: 5 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 11.12 μg/m3
Sulphur Dioxide: 3.26 μg/m3
Ozone: 66.77 μg/m3
Astronomical
Sun Transit: 12:36 AM
Sunset: 5:50 PM
Daylight: 10 hrs 28 mins
Moon Transit: 12:34 AM
Moonset: 5:46 PM
Moon Phase: New
Moon Illumination: 2.5%
Best Times for Fishing or Hunting
Major Periods
12:50 AM - 3:20 AM12:04 AM - 2:34 PM
Minor Periods
5:16 PM - 6:46 PM6:57 AM - 8:27 AM
Action Rating: 4 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:36 AM
Sunset: 5:51 PM
Daylight: 10 hrs 29 mins
Moon Transit: 1:23 PM
Moonset: 6:47 PM
Moon Phase: New
Moon Illumination: 0.4%
Best Times for Fishing or Hunting
Major Periods
1:40 AM - 4:10 AM12:53 AM - 3:23 PM
Minor Periods
6:17 PM - 7:47 PM7:36 AM - 9:06 AM
Action Rating: 5 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:36 AM
Sunset: 5:52 PM
Daylight: 10 hrs 30 mins
Moon Transit: 2:11 PM
Moonset: 7:48 PM
Moon Phase: New
Moon Illumination: 3.1%
Best Times for Fishing or Hunting
Major Periods
2:28 AM - 4:58 AM1:41 PM - 4:11 PM
Minor Periods
7:18 PM - 8:48 PM8:11 AM - 9:41 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:37 AM
Sunset: 5:53 PM
Daylight: 10 hrs 31 mins
Moon Transit: 2:56 PM
Moonset: 8:49 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%
Best Times for Fishing or Hunting
Major Periods
3:14 AM - 5:44 AM2:26 PM - 4:56 PM
Minor Periods
8:19 PM - 9:49 PM8:42 AM - 10:12 AM
Action Rating: 2 out of 5
