Station Name: San Juan, PR
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 0 feet / 0 meters

Nearest Address:
PR-25R
San Juan, PR 00901
San Juan County

GPS Coordinates: 18.474, -66.099

Nearby Water Temperatures

Heat Advisory issued August 10 at 3:58AM AST until August 10 at 5:00PM AST by NWS San Juan PR

Effective: Sun August 10, 2025, 3:58 AM
Expires: Sun August 10, 2025, 12:00 PM

* WHAT...This level of heat affect most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health system and in heat-sensitive industries. * WHERE...All coastal and urban areas in Puerto Rico. * WHEN...From 10 AM this morning to 5 PM AST this afternoon. * IMPACTS...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. 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.

Flash Flood Warning issued August 10 at 1:55PM AST until August 10 at 4:00PM AST by NWS San Juan PR

Effective: Sun August 10, 2025, 1:55 PM
Expires: Sun August 10, 2025, 4:00 PM

FFWSJU The National Weather Service in San Juan has issued a * Flash Flood Warning for... Northern Bayamon... Catano... Northern Guaynabo... San Juan... Toa Baja... * Until 400 PM AST. * At 155 PM AST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts up to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.

Heat Advisory issued August 10 at 10:00AM AST until August 10 at 5:00PM AST by NWS San Juan PR

Effective: Sun August 10, 2025, 10:00 AM
Expires: Sun August 10, 2025, 5:00 PM

* WHAT...This level of heat affect most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health system and in heat-sensitive industries. * WHERE...Eastern Interior, Mayaguez and Vicinity, North Central, Northeast, Northwest, Ponce and Vicinity, San Juan and Vicinity, Southeast, and Southwest Counties. * WHEN...Until 5 PM AST this afternoon. * IMPACTS...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. 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.

Heat Advisory issued August 10 at 3:58AM AST until August 10 at 5:00PM AST by NWS San Juan PR

Effective: Sun August 10, 2025, 3:58 AM
Expires: Sun August 10, 2025, 12:00 PM

* WHAT...This level of heat affect most individuals sensitive to heat, especially those without effective cooling and/or adequate hydration. Impacts possible in some health system and in heat-sensitive industries. * WHERE...All coastal and urban areas in Puerto Rico. * WHEN...From 10 AM this morning to 5 PM AST this afternoon. * IMPACTS...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. 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.

Flash Flood Warning issued August 10 at 1:55PM AST until August 10 at 4:00PM AST by NWS San Juan PR

Effective: Sun August 10, 2025, 1:55 PM
Expires: Sun August 10, 2025, 4:00 PM

FFWSJU The National Weather Service in San Juan has issued a * Flash Flood Warning for... Northern Bayamon... Catano... Northern Guaynabo... San Juan... Toa Baja... * Until 400 PM AST. * At 155 PM AST, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts up to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.