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

Current Water Temperature

58.6°F

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 Park

St. Johns River

Station 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

48°F
Sunny
Sunny
45.1°F
53.8°F
56%
SSW 6.3 mph
13.2 mph
52.4°F
47.9°F
0 in
0%
9 mi
1022 mbar
0.9

Five Day Weather Forecast

Sunny
Sat
H: 68°F
L: 48°F
Patchy rain nearby
Sun
H: 62°F
L: 37°F
Sunny
Mon
H: 53°F
L: 34°F
Sunny
Tue
H: 55°F
L: 41°F
Sunny
Wed
H: 53°F
L: 39°F

Air Quality

PM2.5: 5.15 μg/m3
PM10: 6.15 μg/m3
Carbon Monoxide: 153.85 μg/m3
Nitrogen Dioxide: 4.75 μg/m3
Sulphur Dioxide: 6.25 μg/m3
Ozone: 101 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:35 AM
Sunset: 5:49 PM
Daylight: 10 hrs 27 mins
Moonrise: 6:44 AM
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 AM
11:13 AM - 1:43 PM

Minor Periods

4:16 PM - 5:46 PM
6:14 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.


Saturday, January 17, 2026

Weather Forecast

Sunny
67.5°F
48.4°F
56.8°F
74%
0 in
0%
0%
7.6 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 9.52 μg/m3
PM10: 9.94 μg/m3
Carbon Monoxide: 230.88 μg/m3
Nitrogen Dioxide: 16.54 μg/m3
Sulphur Dioxide: 7.48 μg/m3
Ozone: 70.32 μg/m3

Astronomical

Sunrise: 7:23 AM
Sun Transit: 12:35 AM
Sunset: 5:49 PM
Daylight: 10 hrs 27 mins
Moonrise: 6:44 AM
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 AM
11:13 AM - 1:43 PM

Minor Periods

4:16 PM - 5:46 PM
6:14 AM - 7:44 AM

Action Rating: 5 out of 5

Sunday, January 18, 2026

Weather Forecast

Patchy rain nearby
61.9°F
37.1°F
49.7°F
77%
0.12 in
65%
0%
26.4 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 8.23 μg/m3
PM10: 9.9 μg/m3
Carbon Monoxide: 205.47 μg/m3
Nitrogen Dioxide: 11.12 μg/m3
Sulphur Dioxide: 3.26 μg/m3
Ozone: 66.77 μg/m3

Astronomical

Sunrise: 7:22 AM
Sun Transit: 12:36 AM
Sunset: 5:50 PM
Daylight: 10 hrs 28 mins
Moonrise: 7:27 AM
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 AM
12:04 AM - 2:34 PM

Minor Periods

5:16 PM - 6:46 PM
6:57 AM - 8:27 AM

Action Rating: 4 out of 5

Monday, January 19, 2026

Weather Forecast

Sunny
52.8°F
33.7°F
39.3°F
54%
0 in
0%
0%
13.6 mph
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: 7:22 AM
Sun Transit: 12:36 AM
Sunset: 5:51 PM
Daylight: 10 hrs 29 mins
Moonrise: 8:06 AM
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 AM
12:53 AM - 3:23 PM

Minor Periods

6:17 PM - 7:47 PM
7:36 AM - 9:06 AM

Action Rating: 5 out of 5

Tuesday, January 20, 2026

Weather Forecast

Sunny
54.9°F
40.6°F
46.9°F
46%
0 in
0%
0%
13.9 mph
3


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: 7:22 AM
Sun Transit: 12:36 AM
Sunset: 5:52 PM
Daylight: 10 hrs 30 mins
Moonrise: 8:41 AM
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 AM
1:41 PM - 4:11 PM

Minor Periods

7:18 PM - 8:48 PM
8:11 AM - 9:41 AM

Action Rating: 3 out of 5

Wednesday, January 21, 2026

Weather Forecast

Sunny
52.6°F
38.9°F
46.7°F
55%
0 in
0%
0%
11.6 mph
3


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: 7:21 AM
Sun Transit: 12:37 AM
Sunset: 5:53 PM
Daylight: 10 hrs 31 mins
Moonrise: 9:12 AM
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 AM
2:26 PM - 4:56 PM

Minor Periods

8:19 PM - 9:49 PM
8:42 AM - 10:12 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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