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

Current Water Temperature

88.5°F

Measurement Time: Wednesday, July 29, 2026, 3:30 PM EDT

Temperature Locations

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Local Points of Interest

Riverfront Park; Marco Lake

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

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 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 mi)
Julington Creek, Jacksonville, FL (12.4 mi)
Clapboard Creek, Jacksonville, FL (12.9 mi)

Weather for Jacksonville, Florida

Current Weather

86.1°F
Cloudy
Cloudy
91.9°F
103.8°F
62%
SW 11.2 mph
15.4 mph
91.4°F
76°F
0 in
75%
10 mi
1010 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 102°F
L: 81°F
Patchy rain nearby
Thu
H: 101°F
L: 77°F
Sunny
Fri
H: 99°F
L: 75°F
Sunny
Sat
H: 98°F
L: 77°F
Partly Cloudy
Sun
H: 89°F
L: 76°F

Air Quality

AQI: 1 - Good
PM2.5: 13.7 μg/m3
PM10: 15.4 μg/m3
Carbon Monoxide: 132 μg/m3
Nitrogen Dioxide: 3.1 μg/m3
Sulphur Dioxide: 0.9 μg/m3
Ozone: 98 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:33 PM
Sunset: 8:23 PM
Daylight: 13 hrs 39 mins
Moonrise: 8:41 PM
Moon Transit: 1:17 AM
Moonset: 6:34 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:47 AM - 3:17 AM
2:20 PM - 4:50 PM

Minor Periods

8:11 PM - 9:41 PM
6:04 AM - 7:34 AM

Action Rating: 4 out of 5

Severe Thunderstorm Watch issued July 29 at 2:44PM EDT until July 29 at 10:00PM EDT by NWS Jacksonville FL

Effective: Wed July 29, 2026, 2:44 PM
Expires: Wed July 29, 2026, 10:00 PM

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 532 IN EFFECT UNTIL 10 PM EDT THIS EVENING FOR THE FOLLOWING AREAS THIS WATCH INCLUDES THE FOLLOWING ADJACENT COASTAL WATERS COASTAL WATERS FROM ALTAMAHA SOUND TO FERNANDINA BEACH FL OUT 20 NM COASTAL WATERS FROM FERNANDINA BEACH TO ST. AUGUSTINE FL OUT 20 NM COASTAL WATERS FROM ST. AUGUSTINE TO FLAGLER BEACH FL OUT 20 NM
Wednesday, July 29, 2026

Weather Forecast

Sunny
102.2°F
80.6°F
89.2°F
67%
0 in
17%
0%
12.8 mph
10


Air Quality

AQI: 1 - Good
PM2.5: 15.04 μg/m3
PM10: 16.84 μg/m3
Carbon Monoxide: 127.83 μg/m3
Nitrogen Dioxide: 3.25 μg/m3
Sulphur Dioxide: 0.89 μg/m3
Ozone: 98.42 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:33 PM
Sunset: 8:23 PM
Daylight: 13 hrs 39 mins
Moonrise: 8:41 PM
Moon Transit: 1:17 AM
Moonset: 6:34 AM
Moon Phase: Full
Moon Illumination: 99.7%

Best Times for Fishing or Hunting

Major Periods

12:47 AM - 3:17 AM
2:20 PM - 4:50 PM

Minor Periods

8:11 PM - 9:41 PM
6:04 AM - 7:34 AM

Action Rating: 4 out of 5

Thursday, July 30, 2026

Weather Forecast

Patchy rain nearby
100.5°F
77°F
85.5°F
65%
0.73 in
71%
0%
11.6 mph
10.3


Air Quality

AQI: 1 - Good
PM2.5: 9.2 μg/m3
PM10: 9.95 μg/m3
Carbon Monoxide: 128.67 μg/m3
Nitrogen Dioxide: 3.18 μg/m3
Sulphur Dioxide: 0.92 μg/m3
Ozone: 102.75 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 1:33 PM
Sunset: 8:22 PM
Daylight: 13 hrs 38 mins
Moonrise: 9:13 PM
Moon Transit: 2:04 AM
Moonset: 7:33 AM
Moon Phase: Full
Moon Illumination: 97.1%

Best Times for Fishing or Hunting

Major Periods

1:34 AM - 4:04 AM
3:05 PM - 5:35 PM

Minor Periods

8:43 PM - 10:13 PM
7:03 AM - 8:33 AM

Action Rating: 5 out of 5

Friday, July 31, 2026

Weather Forecast

Sunny
99.4°F
75.4°F
84.7°F
66%
0.08 in
57%
0%
13 mph
9.3


Air Quality

AQI: 1 - Good
PM2.5: 12.18 μg/m3
PM10: 12.89 μg/m3
Carbon Monoxide: 141.21 μg/m3
Nitrogen Dioxide: 4.34 μg/m3
Sulphur Dioxide: 0.93 μg/m3
Ozone: 106.25 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:33 PM
Sunset: 8:21 PM
Daylight: 13 hrs 37 mins
Moonrise: 9:42 PM
Moon Transit: 2:48 AM
Moonset: 8:31 AM
Moon Phase: Full
Moon Illumination: 92.0%

Best Times for Fishing or Hunting

Major Periods

2:18 AM - 4:48 AM
3:49 PM - 6:19 PM

Minor Periods

9:12 PM - 10:42 PM
8:01 AM - 9:31 AM

Action Rating: 3 out of 5

Saturday, August 1, 2026

Weather Forecast

Sunny
98.4°F
76.9°F
84.5°F
69%
0.62 in
69%
0%
8.9 mph
9.2


Air Quality

AQI: 1 - Good
PM2.5: 7.3 μg/m3
PM10: 7.83 μg/m3
Carbon Monoxide: 137.61 μg/m3
Nitrogen Dioxide: 3.88 μg/m3
Sulphur Dioxide: 0.8 μg/m3
Ozone: 89.96 μg/m3

Astronomical

Sunrise: 6:45 AM
Sun Transit: 1:33 PM
Sunset: 8:21 PM
Daylight: 13 hrs 35 mins
Moonrise: 10:10 PM
Moon Transit: 3:32 AM
Moonset: 9:29 AM
Moon Phase: Waning Gibbous
Moon Illumination: 84.9%

Best Times for Fishing or Hunting

Major Periods

3:02 AM - 5:32 AM
12:00 AM - 12:00 AM

Minor Periods

9:40 PM - 11:10 PM
8:59 AM - 10:29 AM

Action Rating: 2 out of 5

Sunday, August 2, 2026

Weather Forecast

Partly Cloudy
89.4°F
76.3°F
80.2°F
75%
0.01 in
25%
0%
9.8 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 3.48 μg/m3
PM10: 4.17 μg/m3
Carbon Monoxide: 143.67 μg/m3
Nitrogen Dioxide: 4.04 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 62.22 μg/m3

Astronomical

Sunrise: 6:46 AM
Sun Transit: 1:32 PM
Sunset: 8:20 PM
Daylight: 13 hrs 34 mins
Moonrise: 10:39 PM
Moon Transit: 6:50 PM
Moonset: 10:27 AM
Moon Phase: Waning Gibbous
Moon Illumination: 75.9%

Best Times for Fishing or Hunting

Major Periods

6:20 PM - 8:50 PM
6:20 PM - 8:50 PM

Minor Periods

10:09 PM - 11:39 PM
9:57 AM - 11:27 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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