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

Current Water Temperature

71.4°F

Measurement Time: Tuesday, April 21, 2026, 1:12 PM EDT

Today's Tides

 High: April 21, 12:46 AM, 4.0 ft
Low: April 21, 7:26 AM, -0.2 ft
 High: April 21, 1:19 PM, 3.3 ft
Low: April 21, 7:13 PM, -0.3 ft

Temperature Locations

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Local Points of Interest

Dames Point; Blount Island

St. Johns River

Station Name: Dames Point
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 30 feet

Sensor Depth: -3 feet

Nearest Address:
I-295 S
Jacksonville, FL 32226
Duval County

GPS Coordinates: 30.387222, -81.559166

Nearby Water Temperatures

St. Johns River, Jacksonville, FL (0.1 mi)
St. Johns River, Jacksonville, FL (3.9 mi)
Clapboard Creek, Jacksonville, FL (4.8 mi)
Dunn Creek, Jacksonville, FL (5.2 mi)
Pottsburg Creek, Jacksonville, FL (7 mi)
Broward River, Jacksonville, FL (7.6 mi)
St. Johns River, Jacksonville, FL (7.8 mi)
St. Johns River, Jacksonville, FL (7.9 mi)
St. Johns River, Jacksonville, FL (8.3 mi)
St. Johns River, Jacksonville, FL (10.5 mi)
Trout River, Jacksonville, FL (12.4 mi)
Cedar River, Jacksonville, FL (13 mi)
St. Johns River, Jacksonville, FL (15 mi)
St. Johns River, Orange Park, FL (16.4 mi)
Ortega River, Jacksonville, FL (16.4 mi)

Weather for Jacksonville, Florida

Current Weather

78.1°F
Sunny
Sunny
75.8°F
78.8°F
27%
E 9.4 mph
10.8 mph
81.8°F
40.2°F
0 in
0%
9 mi
1026 mbar
9.2

Five Day Weather Forecast

Sunny
Tue
H: 84°F
L: 50°F
Partly Cloudy
Wed
H: 76°F
L: 61°F
Sunny
Thu
H: 79°F
L: 61°F
Sunny
Fri
H: 84°F
L: 62°F
Partly Cloudy
Sat
H: 88°F
L: 64°F

Air Quality

AQI: 1 - Good
PM2.5: 6.85 μg/m3
PM10: 10.75 μg/m3
Carbon Monoxide: 146.85 μg/m3
Nitrogen Dioxide: 2.65 μg/m3
Sulphur Dioxide: 3.85 μg/m3
Ozone: 138 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 1:24 PM
Sunset: 7:58 PM
Daylight: 13 hrs 5 mins
Moonrise: 10:07 AM
Moon Transit: 5:38 PM
Moonset: 12:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

5:47 AM - 8:17 AM
5:08 PM - 7:38 PM

Minor Periods

9:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Red Flag Warning issued April 21 at 1:52AM EDT until April 21 at 8:00PM EDT by NWS Jacksonville FL

Effective: Tue April 21, 2026, 1:52 AM
Expires: Tue April 21, 2026, 5:00 PM

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED TODAY ACROSS INLAND NORTHEAST FL THIS MORNING THROUGH THIS LATE AFTERNOON... * AFFECTED AREA...In Florida, Baker, Inland Nassau, Union, Bradford, Gilchrist, Eastern Clay, Eastern Alachua, Eastern Putnam, Eastern Marion, Trout River, Western Clay, Western Alachua, Western Putnam, Central Marion, Northern Columbia, Western Marion, Southeastern Columbia, Western Duval and Southwestern Columbia. * TIMING...Tuesday late morning through evening. * WINDS...Northeast 12 to 18 mph with gusts to 25 mph. * RELATIVE HUMIDITY...As low as 21 percent. * TEMPERATURES...Up to 85. * LIGHTNING... * IMPACTS...Existing or newly ignited wildfires may exhibit erratic fire behavior, spread rapidly and become difficult to contain or suppress.

A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.


Rip Current Statement issued April 21 at 1:45AM EDT until April 22 at 2:00AM EDT by NWS Jacksonville FL

Effective: Tue April 21, 2026, 1:45 AM
Expires: Wed April 22, 2026, 2:00 AM

* WHAT...Dangerous rip currents expected. * WHERE...Northeast Florida Beaches. * WHEN...From 8 AM EDT this morning 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.
Tuesday, April 21, 2026

Weather Forecast

Sunny
83.8°F
50°F
66.6°F
56%
0 in
0%
0%
11 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 8.3 μg/m3
PM10: 12.51 μg/m3
Carbon Monoxide: 171.05 μg/m3
Nitrogen Dioxide: 6.1 μg/m3
Sulphur Dioxide: 4.05 μg/m3
Ozone: 118.04 μg/m3

Astronomical

Sunrise: 6:53 AM
Sun Transit: 1:24 PM
Sunset: 7:58 PM
Daylight: 13 hrs 5 mins
Moonrise: 10:07 AM
Moon Transit: 5:38 PM
Moonset: 12:06 AM
Moon Phase: Waxing Crescent
Moon Illumination: 18.8%

Best Times for Fishing or Hunting

Major Periods

5:47 AM - 8:17 AM
5:08 PM - 7:38 PM

Minor Periods

9:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Wednesday, April 22, 2026

Weather Forecast

Partly Cloudy
76°F
61.1°F
68.5°F
57%
0 in
0%
0%
10.5 mph
7.3


Air Quality

AQI: 1 - Good
PM2.5: 9.33 μg/m3
PM10: 14.53 μg/m3
Carbon Monoxide: 166.01 μg/m3
Nitrogen Dioxide: 6.62 μg/m3
Sulphur Dioxide: 4.53 μg/m3
Ozone: 119.8 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 1:24 PM
Sunset: 7:58 PM
Daylight: 13 hrs 7 mins
Moonrise: 11:14 AM
Moon Transit: 6:41 PM
Moonset: 1:09 AM
Moon Phase: Waxing Crescent
Moon Illumination: 28.4%

Best Times for Fishing or Hunting

Major Periods

6:51 AM - 9:21 AM
6:11 PM - 8:41 PM

Minor Periods

10:44 AM - 12:14 AM
12:39 AM - 2:09 AM

Action Rating: 3 out of 5

Thursday, April 23, 2026

Weather Forecast

Sunny
79.1°F
60.8°F
69.9°F
61%
0 in
0%
0%
11.9 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 10.51 μg/m3
PM10: 14.94 μg/m3
Carbon Monoxide: 167.01 μg/m3
Nitrogen Dioxide: 6.92 μg/m3
Sulphur Dioxide: 3.51 μg/m3
Ozone: 106.2 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 1:24 PM
Sunset: 7:59 PM
Daylight: 13 hrs 9 mins
Moonrise: 12:24 AM
Moon Transit: 7:39 PM
Moonset: 2:02 AM
Moon Phase: First Quarter
Moon Illumination: 39.1%

Best Times for Fishing or Hunting

Major Periods

7:51 AM - 10:21 AM
7:09 PM - 9:39 PM

Minor Periods

11:54 AM - 1:24 PM
1:32 AM - 3:02 AM

Action Rating: 2 out of 5

Friday, April 24, 2026

Weather Forecast

Sunny
84.3°F
61.5°F
71.3°F
64%
0 in
0%
0%
11.6 mph
8.7


Air Quality

AQI: 1 - Good
PM2.5: 8.28 μg/m3
PM10: 11.95 μg/m3
Carbon Monoxide: 148.73 μg/m3
Nitrogen Dioxide: 5.63 μg/m3
Sulphur Dioxide: 3.11 μg/m3
Ozone: 100.2 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 1:24 PM
Sunset: 8:00 PM
Daylight: 13 hrs 10 mins
Moonrise: 1:31 PM
Moon Transit: 8:31 PM
Moonset: 2:47 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

8:46 AM - 11:16 AM
8:01 PM - 10:31 PM

Minor Periods

1:01 PM - 2:31 PM
2:17 AM - 3:47 AM

Action Rating: 3 out of 5

Saturday, April 25, 2026

Weather Forecast

Partly Cloudy
87.5°F
64.3°F
74.9°F
56%
0 in
0%
0%
12.5 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 6.62 μg/m3
PM10: 9.21 μg/m3
Carbon Monoxide: 137.62 μg/m3
Nitrogen Dioxide: 6.24 μg/m3
Sulphur Dioxide: 2.87 μg/m3
Ozone: 82.38 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 1:24 PM
Sunset: 8:00 PM
Daylight: 13 hrs 12 mins
Moonrise: 2:35 PM
Moon Transit: 9:19 PM
Moonset: 3:24 AM
Moon Phase: First Quarter
Moon Illumination: 61.6%

Best Times for Fishing or Hunting

Major Periods

9:36 AM - 12:06 AM
8:49 PM - 11:19 PM

Minor Periods

2:05 PM - 3:35 PM
2:54 AM - 4:24 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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