Water Temperature of the St. Johns River in Jacksonville, FL
Current Water Temperature
Measurement Time: Sunday, August 17, 2025, 3:30 AM EDT
Temperature Locations
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Station Name: ST. JOHNS RIVER AT JACKSONVILLE, FL
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 0 feet / 0 meters
Nearest Address:
S Acosta Bridge
Jacksonville, FL 32202
Duval County
GPS Coordinates: 30.3224616, -81.6653735
Nearby Water Temperatures
St. Johns River, Jacksonville, FL (1.3 mi)St. Johns River, Jacksonville, FL (3.9 mi)
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St. Johns River, Jacksonville, FL (7.8 mi)
Broward River, Jacksonville, FL (8.4 mi)
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Dunn Creek, Jacksonville, FL (10.0 mi)
Clapboard Creek, Jacksonville, FL (12.2 mi)
Julington Creek, Jacksonville, FL (13.7 mi)
Weather for Jacksonville, Florida
Current Weather

Humidity: 90%
Feels Like: 83.4°F
Wind: N 3.1 mph
Wind Gusts: 4.2 mph
Precipitation: 0 in
Cloud Cover: 75%
Visibility: 9 mi
UV Index: 1.5
Five Day Weather Forecast

Sun
H: 91°F
L: 80°F

Mon
H: 89°F
L: 79°F

Tue
H: 89°F
L: 78°F

Wed
H: 90°F
L: 76°F

Thu
H: 97°F
L: 77°F
Air Quality
Nitrogen Dioxide: 9.07 μg/m3
Sulphur Dioxide: 9.25 μg/m3
Ozone: 124 μg/m3
Astronomical
Sun Transit: 1:30 PM
Sunset: 8:06 PM
Daylight: 13 hrs 11 mins
Moon Transit: 8:20 AM
Moonset: 3:51 PM
Moon Phase: Last Quarter
Moon Illumination: 28.4%
Best Times for Fishing or Hunting
Major Periods
7:50 AM - 10:20 AM12:00 AM - 12:00 AM
Minor Periods
3:21 PM - 4:51 PM12:25 AM - 1:55 AM
Action Rating: 2 out of 5
Special Weather Statement issued August 17 at 7:43AM EDT by NWS Jacksonville FL
Effective: Sun August 17, 2025, 7:43 AM
Expires: Sun August 17, 2025, 10:00 AM
Areas of locally dense fog have developed across inland portions of northeast and north central Florida early this morning. Visibilities may be reduced to around one quarter mile at some locations early this morning. This fog is expected to dissipate during the mid-morning hours. The nature of the fog is such that visibilities will vary greatly over short distances. Motorists should be alert for rapidly changing conditions through the early morning hours.
Special Weather Statement issued August 17 at 7:43AM EDT by NWS Jacksonville FL
Effective: Sun August 17, 2025, 7:43 AM
Expires: Sun August 17, 2025, 10:00 AM
Areas of locally dense fog have developed across inland portions of northeast and north central Florida early this morning. Visibilities may be reduced to around one quarter mile at some locations early this morning. This fog is expected to dissipate during the mid-morning hours. The nature of the fog is such that visibilities will vary greatly over short distances. Motorists should be alert for rapidly changing conditions through the early morning hours.
Special Weather Statement issued August 17 at 7:43AM EDT by NWS Jacksonville FL
Effective: Sun August 17, 2025, 7:43 AM
Expires: Sun August 17, 2025, 10:00 AM
Areas of locally dense fog have developed across inland portions of northeast and north central Florida early this morning. Visibilities may be reduced to around one quarter mile at some locations early this morning. This fog is expected to dissipate during the mid-morning hours. The nature of the fog is such that visibilities will vary greatly over short distances. Motorists should be alert for rapidly changing conditions through the early morning hours.
Special Weather Statement issued August 17 at 7:43AM EDT by NWS Jacksonville FL
Effective: Sun August 17, 2025, 7:43 AM
Expires: Sun August 17, 2025, 10:00 AM
Areas of locally dense fog have developed across inland portions of northeast and north central Florida early this morning. Visibilities may be reduced to around one quarter mile at some locations early this morning. This fog is expected to dissipate during the mid-morning hours. The nature of the fog is such that visibilities will vary greatly over short distances. Motorists should be alert for rapidly changing conditions through the early morning hours.
Special Weather Statement issued August 17 at 7:43AM EDT by NWS Jacksonville FL
Effective: Sun August 17, 2025, 7:43 AM
Expires: Sun August 17, 2025, 10:00 AM
Areas of locally dense fog have developed across inland portions of northeast and north central Florida early this morning. Visibilities may be reduced to around one quarter mile at some locations early this morning. This fog is expected to dissipate during the mid-morning hours. The nature of the fog is such that visibilities will vary greatly over short distances. Motorists should be alert for rapidly changing conditions through the early morning hours.
Weather Forecast
Average Temperature: 84.5°F
Average Humidity: 77%
Wind: 8.1 mph
UV Index: 2
Air Quality
Nitrogen Dioxide: 11.14 μg/m3
Sulphur Dioxide: 11.5 μg/m3
Ozone: 121.16 μg/m3
Astronomical
Sun Transit: 1:30 PM
Sunset: 8:06 PM
Daylight: 13 hrs 11 mins
Moon Transit: 8:20 AM
Moonset: 3:51 PM
Moon Phase: Last Quarter
Moon Illumination: 28.4%
Best Times for Fishing or Hunting
Major Periods
7:50 AM - 10:20 AM12:00 AM - 12:00 AM
Minor Periods
3:21 PM - 4:51 PM12:25 AM - 1:55 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 83.4°F
Average Humidity: 78%
Wind: 9.6 mph
UV Index: 2.7
Air Quality
Nitrogen Dioxide: 14.28 μg/m3
Sulphur Dioxide: 9.31 μg/m3
Ozone: 89.92 μg/m3
Astronomical
Sun Transit: 1:30 PM
Sunset: 8:05 PM
Daylight: 13 hrs 9 mins
Moon Transit: 9:22 AM
Moonset: 4:55 PM
Moon Phase: Last Quarter
Moon Illumination: 18.9%
Best Times for Fishing or Hunting
Major Periods
8:52 AM - 11:22 AM12:00 AM - 12:00 AM
Minor Periods
4:25 PM - 5:55 PM1:21 AM - 2:51 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 82.4°F
Average Humidity: 81%
Wind: 12.1 mph
UV Index: 2.5
Air Quality
Nitrogen Dioxide: 13.79 μg/m3
Sulphur Dioxide: 7.56 μg/m3
Ozone: 86.92 μg/m3
Astronomical
Sun Transit: 1:30 PM
Sunset: 8:04 PM
Daylight: 13 hrs 8 mins
Moon Transit: 10:24 AM
Moonset: 5:51 PM
Moon Phase: Waning Crescent
Moon Illumination: 10.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM9:54 AM - 12:24 AM
Minor Periods
5:21 PM - 6:51 PM2:24 AM - 3:54 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 83.2°F
Average Humidity: 70%
Wind: 7.2 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 9.98 μg/m3
Sulphur Dioxide: 5.9 μg/m3
Ozone: 85.88 μg/m3
Astronomical
Sun Transit: 1:29 PM
Sunset: 8:03 PM
Daylight: 13 hrs 6 mins
Moon Transit: 11:23 AM
Moonset: 6:40 PM
Moon Phase: Waning Crescent
Moon Illumination: 4.9%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM10:53 AM - 1:23 PM
Minor Periods
6:10 PM - 7:40 PM3:30 AM - 5:00 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 84.7°F
Average Humidity: 65%
Wind: 8.7 mph
UV Index: 6
Air Quality
Nitrogen Dioxide: 38.69 μg/m3
Sulphur Dioxide: 8.99 μg/m3
Ozone: 63.46 μg/m3
Astronomical
Sun Transit: 1:29 PM
Sunset: 8:02 PM
Daylight: 13 hrs 4 mins
Moon Transit: 12:17 AM
Moonset: 7:19 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.2%
Best Times for Fishing or Hunting
Major Periods
12:30 AM - 3:00 AM11:47 AM - 2:17 PM
Minor Periods
6:49 PM - 8:19 PM4:37 AM - 6:07 AM
Action Rating: 3 out of 5