Weather for Mercedes, Texas
Current Weather
Humidity: 93%
Feels Like: 61°F
Wind: NE 9.8 mph
Wind Gusts: 13.8 mph
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 9 mi
UV Index: 0
Five Day Weather Forecast
Thu
H: 74°F
L: 61°F
Fri
H: 73°F
L: 69°F
Sat
H: 81°F
L: 70°F
Sun
H: 72°F
L: 60°F
Mon
H: 62°F
L: 58°F
Air Quality
Nitrogen Dioxide: 6.85 μg/m3
Sulphur Dioxide: 2.85 μg/m3
Ozone: 55 μg/m3
Astronomical
Sun Transit: 12:19 AM
Sunset: 5:39 PM
Daylight: 10 hrs 40 mins
Moon Transit: 6:22 PM
Moonset: 12:15 AM
Moon Phase: First Quarter
Moon Illumination: 46.5%
Best Times for Fishing or Hunting
Major Periods
4:24 AM - 6:54 AM5:52 PM - 8:22 PM
Minor Periods
12:09 AM - 1:39 PM12:00 AM - 12:00 AM
Action Rating: 4 out of 5
High Surf Advisory issued November 26 at 1:03PM CST until November 26 at 8:00PM CST by NWS Brownsville TX
Effective: Wed November 26, 2025, 1:03 PM
Expires: Thu November 27, 2025, 12:00 AM
* WHAT...For the High Surf Advisory, large breaking waves of 5 to 6 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...Kenedy Island, Willacy Island and Cameron Island Counties. * WHEN...For the High Surf Advisory, until 8 PM CST this evening. For the High Rip Current Risk, through late tonight. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water.
Inexperienced swimmers should remain out of the water due to dangerous surf conditions. 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 November 26 at 1:03PM CST until November 27 at 6:00AM CST by NWS Brownsville TX
Effective: Wed November 26, 2025, 1:03 PM
Expires: Thu November 27, 2025, 12:00 AM
* WHAT...For the High Surf Advisory, large breaking waves of 5 to 6 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...Kenedy Island, Willacy Island and Cameron Island Counties. * WHEN...For the High Surf Advisory, until 8 PM CST this evening. For the High Rip Current Risk, through late tonight. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water.
Inexperienced swimmers should remain out of the water due to dangerous surf conditions. 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: 68.5°F
Average Humidity: 76%
Wind: 13.9 mph
UV Index: 0.4
Air Quality
Nitrogen Dioxide: 6.23 μg/m3
Sulphur Dioxide: 2.61 μg/m3
Ozone: 75.88 μg/m3
Astronomical
Sun Transit: 12:19 AM
Sunset: 5:39 PM
Daylight: 10 hrs 40 mins
Moon Transit: 6:22 PM
Moonset: 12:15 AM
Moon Phase: First Quarter
Moon Illumination: 46.5%
Best Times for Fishing or Hunting
Major Periods
4:24 AM - 6:54 AM5:52 PM - 8:22 PM
Minor Periods
12:09 AM - 1:39 PM12:00 AM - 12:00 AM
Action Rating: 4 out of 5
Weather Forecast
Average Temperature: 70.6°F
Average Humidity: 75%
Wind: 15.7 mph
UV Index: 0.3
Air Quality
Nitrogen Dioxide: 6.87 μg/m3
Sulphur Dioxide: 2.34 μg/m3
Ozone: 82.52 μg/m3
Astronomical
Sun Transit: 12:19 AM
Sunset: 5:39 PM
Daylight: 10 hrs 39 mins
Moon Transit: 12:00 AM
Moonset: 12:13 AM
Moon Phase: First Quarter
Moon Illumination: 57.8%
Best Times for Fishing or Hunting
Major Periods
12:00 AM - 12:00 AM5:10 AM - 7:40 AM
Minor Periods
12:41 AM - 2:11 PM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 75°F
Average Humidity: 77%
Wind: 21.9 mph
UV Index: 0.6
Air Quality
Nitrogen Dioxide: 3.54 μg/m3
Sulphur Dioxide: 1.87 μg/m3
Ozone: 87.76 μg/m3
Astronomical
Sun Transit: 12:20 AM
Sunset: 5:39 PM
Daylight: 10 hrs 39 mins
Moon Transit: 8:12 PM
Moonset: 1:11 AM
Moon Phase: First Quarter
Moon Illumination: 68.7%
Best Times for Fishing or Hunting
Major Periods
7:42 PM - 10:12 PM7:42 PM - 10:12 PM
Minor Periods
1:13 PM - 2:43 PM12:41 AM - 2:11 AM
Action Rating: 2 out of 5
Weather Forecast
Average Temperature: 67.3°F
Average Humidity: 80%
Wind: 20.6 mph
UV Index: 0.4
Air Quality
Nitrogen Dioxide: 6.18 μg/m3
Sulphur Dioxide: 2.25 μg/m3
Ozone: 64.92 μg/m3
Astronomical
Sun Transit: 12:20 AM
Sunset: 5:39 PM
Daylight: 10 hrs 38 mins
Moon Transit: 8:42 PM
Moonset: 2:12 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.6%
Best Times for Fishing or Hunting
Major Periods
6:42 AM - 9:12 AM8:12 PM - 10:42 PM
Minor Periods
1:47 PM - 3:17 PM1:42 AM - 3:12 AM
Action Rating: 3 out of 5
Weather Forecast
Average Temperature: 59.6°F
Average Humidity: 66%
Wind: 14.1 mph
UV Index: 0
Air Quality
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3
Astronomical
Sun Transit: 12:20 AM
Sunset: 5:39 PM
Daylight: 10 hrs 37 mins
Moon Transit: 9:33 PM
Moonset: 3:15 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 87.1%
Best Times for Fishing or Hunting
Major Periods
7:32 AM - 10:02 AM9:03 PM - 11:33 PM
Minor Periods
2:24 PM - 3:54 PM2:45 AM - 4:15 AM
Action Rating: 2 out of 5