Weather for Port Isabel, Texas
Current Weather
Humidity: 84%
Feels Like: 76.8°F
Wind: SE 11.9 mph
Wind Gusts: 17.4 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast
Mon
H: 84°F
L: 81°F
Tue
H: 81°F
L: 79°F
Wed
H: 81°F
L: 78°F
Thu
H: 82°F
L: 77°F
Fri
H: 82°F
L: 78°F
Air Quality
Nitrogen Dioxide: 1.46 μg/m3
Sulphur Dioxide: 0.96 μg/m3
Ozone: 103 μg/m3
Astronomical
Sun Transit: 1:14 PM
Sunset: 7:03 PM
Daylight: 11 hrs 36 mins
Moon Transit: 7:17 AM
Moonset: 2:29 PM
Moon Phase: Last Quarter
Moon Illumination: 51.1%
Best Times for Fishing or Hunting
Major Periods
6:47 AM - 9:17 AM6:16 PM - 8:46 PM
Minor Periods
1:59 PM - 3:29 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Coastal Flood Statement issued October 12 at 9:46PM CDT until October 13 at 7:00AM CDT by NWS Brownsville TX
Effective: Sun October 12, 2025, 9:46 PM
Expires: Mon October 13, 2025, 7:15 AM
* WHAT...For the Coastal Flood Statement, isolated minor coastal flooding. For the High Rip Current Risk, dangerous rip currents. * WHERE...Kenedy Island, Willacy Island and Cameron Island Counties. * WHEN...For the Coastal Flood Statement, until 7 AM CDT Monday. For the High Rip Current Risk, through Monday evening. * IMPACTS...Wave run-up may approach the dunes along narrow beaches. Beach equipment, such as umbrellas and chairs, could be moved by waves. Vehicles driving along narrow beaches may experience higher water levels. Elevated water levels may also occur across the Laguna Madre and South Bay, and along State Highway 4 west of Boca Chica State Park. Rip currents can sweep even the best swimmers away from shore into deeper water.
Do not drive through flooded roadways. 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.
Rip Current Statement issued October 12 at 9:46PM CDT until October 13 at 7:00PM CDT by NWS Brownsville TX
Effective: Sun October 12, 2025, 9:46 PM
Expires: Mon October 13, 2025, 7:15 AM
* WHAT...For the Coastal Flood Statement, isolated minor coastal flooding. For the High Rip Current Risk, dangerous rip currents. * WHERE...Kenedy Island, Willacy Island and Cameron Island Counties. * WHEN...For the Coastal Flood Statement, until 7 AM CDT Monday. For the High Rip Current Risk, through Monday evening. * IMPACTS...Wave run-up may approach the dunes along narrow beaches. Beach equipment, such as umbrellas and chairs, could be moved by waves. Vehicles driving along narrow beaches may experience higher water levels. Elevated water levels may also occur across the Laguna Madre and South Bay, and along State Highway 4 west of Boca Chica State Park. Rip currents can sweep even the best swimmers away from shore into deeper water.
Do not drive through flooded roadways. 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.
Weather Forecast
Average Temperature: 82.3°F
Average Humidity: 68%
Wind: 14.5 mph
UV Index: 1.9
Air Quality
Nitrogen Dioxide: 1.3 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 104.48 μg/m3
Astronomical
Sun Transit: 1:14 PM
Sunset: 7:03 PM
Daylight: 11 hrs 36 mins
Moon Transit: 7:17 AM
Moonset: 2:29 PM
Moon Phase: Last Quarter
Moon Illumination: 51.1%
Best Times for Fishing or Hunting
Major Periods
6:47 AM - 9:17 AM6:16 PM - 8:46 PM
Minor Periods
1:59 PM - 3:29 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 80.3°F
Average Humidity: 72%
Wind: 17.9 mph
UV Index: 1.7
Air Quality
Nitrogen Dioxide: 1.12 μg/m3
Sulphur Dioxide: 0.82 μg/m3
Ozone: 99.36 μg/m3
Astronomical
Sun Transit: 1:14 PM
Sunset: 7:02 PM
Daylight: 11 hrs 34 mins
Moon Transit: 8:13 AM
Moonset: 3:14 PM
Moon Phase: Last Quarter
Moon Illumination: 39.8%
Best Times for Fishing or Hunting
Major Periods
7:43 AM - 10:13 AM7:10 PM - 9:40 PM
Minor Periods
2:44 PM - 4:14 PM12:37 AM - 2:07 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 79.4°F
Average Humidity: 68%
Wind: 12.3 mph
UV Index: 1.7
Air Quality
Nitrogen Dioxide: 1.38 μg/m3
Sulphur Dioxide: 1.37 μg/m3
Ozone: 121.64 μg/m3
Astronomical
Sun Transit: 1:14 PM
Sunset: 7:01 PM
Daylight: 11 hrs 33 mins
Moon Transit: 9:04 AM
Moonset: 3:53 PM
Moon Phase: Last Quarter
Moon Illumination: 29.1%
Best Times for Fishing or Hunting
Major Periods
8:34 AM - 11:04 AM7:59 PM - 10:29 PM
Minor Periods
3:23 PM - 4:53 PM1:40 AM - 3:10 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 79.3°F
Average Humidity: 59%
Wind: 13.6 mph
UV Index: 1.7
Air Quality
Nitrogen Dioxide: 2.25 μg/m3
Sulphur Dioxide: 1.19 μg/m3
Ozone: 108.31 μg/m3
Astronomical
Sun Transit: 1:14 PM
Sunset: 7:00 PM
Daylight: 11 hrs 31 mins
Moon Transit: 9:51 AM
Moonset: 4:27 PM
Moon Phase: Last Quarter
Moon Illumination: 19.4%
Best Times for Fishing or Hunting
Major Periods
8:44 PM - 11:14 PM9:21 AM - 11:51 AM
Minor Periods
3:57 PM - 5:27 PM2:39 AM - 4:09 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 79.3°F
Average Humidity: 65%
Wind: 12.5 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 1:14 PM
Sunset: 6:59 PM
Daylight: 11 hrs 30 mins
Moon Transit: 10:35 AM
Moonset: 4:58 PM
Moon Phase: Waning Crescent
Moon Illumination: 11.3%
Best Times for Fishing or Hunting
Major Periods
9:26 PM - 11:56 PM10:05 AM - 12:35 AM
Minor Periods
4:28 PM - 5:58 PM3:36 AM - 5:06 AM
Action Rating: 2 out of 5