Water Temperature of the St. Johns River in Jacksonville, FL
Current Water Temperature
Measurement Time: Monday, July 28, 2025, 1:30 AM EDT
Temperature Locations
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Local Points of Interest
Henry H Buckman Bridge; Plummers Cove; Mulberry Cove; Naval Air Station JacksonvilleSponsored Content
Station Name: ST.JOHNS RIVER BUCKMAN BRIDGE AT JACKSONVILLE,FL
Data Source: Water Data - usgc.gov
Elevation Above Sea Level: 0 feet / 0 meters
Nearest Address:
I-295 (Buckman Bridge)
Jacksonville, FL 32257
Duval County
GPS Coordinates: 30.1902405, -81.6662048
Nearby Water Temperatures
St. Johns River, Orange Park, FL (1.9 mi)Ortega River, Jacksonville, FL (3.9 mi)
St. Johns River, Jacksonville, FL (4.5 mi)
Julington Creek, Jacksonville, FL (5.7 mi)
Cedar River, Jacksonville, FL (7.7 mi)
St. Johns River, Jacksonville, FL (7.9 mi)
Durbin Creek, Jacksonville, FL (8.7 mi)
Pottsburg Creek, Jacksonville, FL (8.8 mi)
St. Johns River, Jacksonville, FL (9.1 mi)
St. Johns River, Jacksonville, FL (11.8 mi)
St. Johns River, Green Cove Springs, FL (13.1 mi)
St. Johns River, Green Cove Springs, FL (14.6 mi)
St. Johns River, Jacksonville, FL (15.0 mi)
St. Johns River, Jacksonville, FL (15.0 mi)
Broward River, Jacksonville, FL (17.5 mi)
Weather for Jacksonville, Florida
Current Weather

Humidity: 79%
Feels Like: 86°F
Wind: SW 3.1 mph
Wind Gusts: 5.9 mph
Precipitation: 0 in
Cloud Cover: 25%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast

Mon
H: 106°F
L: 83°F

Tue
H: 101°F
L: 79°F

Wed
H: 96°F
L: 81°F

Thu
H: 102°F
L: 80°F

Fri
H: 102°F
L: 80°F
Air Quality
Nitrogen Dioxide: 7.22 μg/m3
Sulphur Dioxide: 5.18 μg/m3
Ozone: 114 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:23 PM
Daylight: 13 hrs 40 mins
Moon Transit: 4:41 PM
Moonset: 10:51 PM
Moon Phase: Waxing Crescent
Moon Illumination: 9.3%
Best Times for Fishing or Hunting
Major Periods
4:59 AM - 7:29 AM4:11 PM - 6:41 PM
Minor Periods
10:21 PM - 11:51 PM9:55 AM - 11:25 AM
Action Rating: 2 out of 5
Extreme Heat Warning issued July 28 at 12:22AM EDT until July 28 at 7:00PM EDT by NWS Jacksonville FL
Effective: Mon July 28, 2025, 12:22 AM
Expires: Mon July 28, 2025, 7:00 PM
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 113 possible. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...For the Extreme Heat Warning, from noon today to 7 PM EDT this evening. For the Extreme Heat Watch, from Tuesday afternoon through Tuesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Stay cool, stay hydrated, stay informed.
Extreme Heat Watch issued July 28 at 12:22AM EDT until July 29 at 7:00PM EDT by NWS Jacksonville FL
Effective: Mon July 28, 2025, 12:22 AM
Expires: Mon July 28, 2025, 7:00 PM
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 113 possible. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...For the Extreme Heat Warning, from noon today to 7 PM EDT this evening. For the Extreme Heat Watch, from Tuesday afternoon through Tuesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Stay cool, stay hydrated, stay informed.
Extreme Heat Warning issued July 28 at 12:22AM EDT until July 28 at 7:00PM EDT by NWS Jacksonville FL
Effective: Mon July 28, 2025, 12:22 AM
Expires: Mon July 28, 2025, 7:00 PM
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 113 possible. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...For the Extreme Heat Warning, from noon today to 7 PM EDT this evening. For the Extreme Heat Watch, from Tuesday afternoon through Tuesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Stay cool, stay hydrated, stay informed.
Extreme Heat Watch issued July 28 at 12:22AM EDT until July 29 at 7:00PM EDT by NWS Jacksonville FL
Effective: Mon July 28, 2025, 12:22 AM
Expires: Mon July 28, 2025, 7:00 PM
* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 113 possible. * WHERE...Portions of northeast and northern Florida and southeast Georgia. * WHEN...For the Extreme Heat Warning, from noon today to 7 PM EDT this evening. For the Extreme Heat Watch, from Tuesday afternoon through Tuesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Stay cool, stay hydrated, stay informed.
Heat Advisory issued July 28 at 12:22AM EDT until July 28 at 7:00PM EDT by NWS Jacksonville FL
Effective: Mon July 28, 2025, 12:22 AM
Expires: Mon July 28, 2025, 7:00 PM
* WHAT...For the Heat Advisory, heat index values up to 112 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 115 possible. * WHERE...Portions of northeast and northern Florida. * WHEN...For the Heat Advisory, from noon today to 7 PM EDT this evening. For the Extreme Heat Watch, from Tuesday afternoon through Tuesday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Weather Forecast
Average Temperature: 93.1°F
Average Humidity: 55%
Wind: 11.4 mph
UV Index: 2.7
Air Quality
Nitrogen Dioxide: 8.1 μg/m3
Sulphur Dioxide: 5.35 μg/m3
Ozone: 117.16 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:23 PM
Daylight: 13 hrs 40 mins
Moon Transit: 4:41 PM
Moonset: 10:51 PM
Moon Phase: Waxing Crescent
Moon Illumination: 9.3%
Best Times for Fishing or Hunting
Major Periods
4:59 AM - 7:29 AM4:11 PM - 6:41 PM
Minor Periods
10:21 PM - 11:51 PM9:55 AM - 11:25 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 90.8°F
Average Humidity: 62%
Wind: 7.6 mph
UV Index: 2.6
Air Quality
Nitrogen Dioxide: 8.11 μg/m3
Sulphur Dioxide: 6.16 μg/m3
Ozone: 111.48 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:22 PM
Daylight: 13 hrs 38 mins
Moon Transit: 5:22 PM
Moonset: 11:17 PM
Moon Phase: Waxing Crescent
Moon Illumination: 16.9%
Best Times for Fishing or Hunting
Major Periods
5:40 AM - 8:10 AM4:52 PM - 7:22 PM
Minor Periods
12:00 AM - 12:00 AM10:50 AM - 12:20 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 88.4°F
Average Humidity: 74%
Wind: 8.5 mph
UV Index: 2.7
Air Quality
Nitrogen Dioxide: 8.15 μg/m3
Sulphur Dioxide: 4.89 μg/m3
Ozone: 110.24 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:22 PM
Daylight: 13 hrs 37 mins
Moon Transit: 6:02 PM
Moonset: 12:17 AM
Moon Phase: Waxing Crescent
Moon Illumination: 26.2%
Best Times for Fishing or Hunting
Major Periods
6:20 AM - 8:50 AM5:32 PM - 8:02 PM
Minor Periods
11:45 AM - 1:15 PM12:00 AM - 12:00 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 90.2°F
Average Humidity: 55%
Wind: 10.3 mph
UV Index: 2.8
Air Quality
Nitrogen Dioxide: 9.73 μg/m3
Sulphur Dioxide: 3.66 μg/m3
Ozone: 73.69 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:21 PM
Daylight: 13 hrs 36 mins
Moon Transit: 6:43 PM
Moonset: 12:43 AM
Moon Phase: First Quarter
Moon Illumination: 36.7%
Best Times for Fishing or Hunting
Major Periods
7:01 AM - 9:31 AM6:13 PM - 8:43 PM
Minor Periods
12:40 AM - 2:10 PM12:00 AM - 12:00 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 87.9°F
Average Humidity: 60%
Wind: 7.8 mph
UV Index: 0.1
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:33 PM
Sunset: 8:20 PM
Daylight: 13 hrs 34 mins
Moon Transit: 7:27 PM
Moonset: 12:12 AM
Moon Phase: First Quarter
Moon Illumination: 47.9%
Best Times for Fishing or Hunting
Major Periods
7:44 AM - 10:14 AM6:57 PM - 9:27 PM
Minor Periods
1:36 PM - 3:06 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5