Water Temperature of Rollover Pass in Port Bolivar, TX

Current Water Temperature

80.1°F

Measurement Time: Wednesday, May 20, 2026, 10:06 AM CDT

Today's Tides

Low: May 20, 4:38 AM, -0.1 ft
 High: May 20, 4:28 PM, 1.8 ft

Temperature Locations

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Local Points of Interest

Rollover Bay; East Bay; Trinity Bay; Gulf of Mexico

Rollover Pass

Station Name: Rollover Pass
Data Source: NOAA Tides and Currents

Elevation Above Sea Level: 3 feet

Sensor Depth: 0 feet

Nearest Address:
1682 Hamilton Ave
Port Bolivar, TX 77617
Galveston County

GPS Coordinates: 29.515, -94.513

Nearby Water Temperatures

Galveston Bay, High Island, TX (9.2 mi)
Bolivar Roads, Galveston, TX (16.8 mi)
Trinity Bay, Anahuac, TX (17.2 mi)
Galveston Bay, Galveston, TX (20.2 mi)
Port of Galveston, Galveston, TX (22 mi)
Trinity Bay, Baytown, TX (23.1 mi)
Old River, Wallisville, TX (24.3 mi)
Trinity River, Wallisville, TX (24.4 mi)
Galveston Bay, San Leon, TX (24.5 mi)
Lake Charlotte, Wallisville, TX (27.2 mi)
Galveston Bay, Galveston, TX (27.4 mi)
Old River Lake, Cove, TX (27.8 mi)
San Jacinto River, La Porte, TX (30.6 mi)
Old River Cutoff, Moss Bluff, TX (30.8 mi)
Trinity River, Liberty, TX (33.4 mi)

Weather for Port Bolivar, Texas

Current Weather

79.2°F
Patchy rain nearby
Patchy rain nearby
84.7°F
84.7°F
84%
SE 14.8 mph
19.8 mph
79.2°F
74.3°F
0 in
87%
6 mi
1017 mbar
4.4

Five Day Weather Forecast

Patchy rain nearby
Wed
H: 80°F
L: 78°F
Moderate rain
Thu
H: 80°F
L: 78°F
Moderate rain
Fri
H: 80°F
L: 78°F
Patchy rain nearby
Sat
H: 81°F
L: 78°F
Patchy rain nearby
Sun
H: 81°F
L: 79°F

Air Quality

PM2.5: 7.85 μg/m3
PM10: 11.75 μg/m3
Carbon Monoxide: 116.85 μg/m3
Nitrogen Dioxide: 1.25 μg/m3
Sulphur Dioxide: 1.05 μg/m3
Ozone: 65 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:14 PM
Sunset: 8:07 PM
Daylight: 13 hrs 44 mins
Moonrise: 10:07 AM
Moon Transit: 5:23 PM
Moonset: 12:44 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

3:45 AM - 6:15 AM
4:53 PM - 7:23 PM

Minor Periods

9:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Flood Advisory issued May 20 at 7:24AM CDT until May 20 at 9:15AM CDT by NWS Houston/Galveston TX

Effective: Wed May 20, 2026, 7:24 AM
Expires: Wed May 20, 2026, 9:15 AM

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of southeast Texas, including the following counties, Brazoria, Galveston and Harris. * WHEN...Until 915 AM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 724 AM CDT, Doppler radar indicated heavy rain due to thunderstorms. Overflowing poor drainage areas will cause minor flooding in the advisory area. Between 1 and 2.5 inches of rain have fallen. - Additional rainfall amounts up to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... League City, Texas City, southern Friendswood, Alvin, Dickinson, La Marque, Santa Fe, Webster, Hitchcock, Kemah, Hillcrest, Liverpool, Bacliff, San Leon and Chocolate Bayou. - http://www.weather.gov/safety/flood

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.


Flood Advisory issued May 20 at 6:33AM CDT until May 20 at 8:30AM CDT by NWS Houston/Galveston TX

Effective: Wed May 20, 2026, 6:33 AM
Expires: Wed May 20, 2026, 8:30 AM

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of southeast Texas, including the following counties, Brazoria and Galveston. * WHEN...Until 830 AM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 633 AM CDT, Doppler radar indicated heavy rain due to thunderstorms. Overflowing poor drainage areas will cause minor flooding in the advisory area. Between 1.5 and 3 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Galveston Island West End, northern Lake Jackson, Angleton, Richwood, Danbury, eastern Bailey's Prairie and San Luis Pass. - http://www.weather.gov/safety/flood

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.


Rip Current Statement issued May 20 at 1:36AM CDT until May 20 at 10:00PM CDT by NWS Houston/Galveston TX

Effective: Wed May 20, 2026, 1:36 AM
Expires: Wed May 20, 2026, 5:45 PM

* WHAT...Dangerous rip currents. * WHERE...Gulf-facing beaches, including the Matagorda Peninsula, Brazoria County beaches, Galveston Island and the Bolivar Peninsula. * WHEN...Through this evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water.

Swim near a lifeguard and away from rocks, jetties, and piers. 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.


Wednesday, May 20, 2026

Weather Forecast

Patchy rain nearby
79.6°F
78.1°F
78.9°F
86%
0.11 in
83%
0%
17 mph
8


Air Quality

AQI: 1 - Good
PM2.5: 7.87 μg/m3
PM10: 11.87 μg/m3
Carbon Monoxide: 113.33 μg/m3
Nitrogen Dioxide: 2.14 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 57.16 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:14 PM
Sunset: 8:07 PM
Daylight: 13 hrs 44 mins
Moonrise: 10:07 AM
Moon Transit: 5:23 PM
Moonset: 12:44 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%

Best Times for Fishing or Hunting

Major Periods

3:45 AM - 6:15 AM
4:53 PM - 7:23 PM

Minor Periods

9:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Thursday, May 21, 2026

Weather Forecast

Moderate rain
80.3°F
78°F
79.1°F
83%
0.2 in
88%
0%
17.7 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 6.51 μg/m3
PM10: 9.83 μg/m3
Carbon Monoxide: 109.5 μg/m3
Nitrogen Dioxide: 2.16 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 53.64 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 1:14 PM
Sunset: 8:08 PM
Daylight: 13 hrs 45 mins
Moonrise: 11:16 AM
Moon Transit: 6:19 PM
Moonset: 12:34 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%

Best Times for Fishing or Hunting

Major Periods

4:45 AM - 7:15 AM
5:49 PM - 8:19 PM

Minor Periods

10:46 AM - 12:16 AM
12:04 AM - 1:34 AM

Action Rating: 3 out of 5

Friday, May 22, 2026

Weather Forecast

Moderate rain
80.3°F
77.8°F
79°F
83%
0.65 in
88%
0%
17 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 5.8 μg/m3
PM10: 8.52 μg/m3
Carbon Monoxide: 109.51 μg/m3
Nitrogen Dioxide: 2.63 μg/m3
Sulphur Dioxide: 1.16 μg/m3
Ozone: 54.64 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 1:14 PM
Sunset: 8:08 PM
Daylight: 13 hrs 46 mins
Moonrise: 12:23 AM
Moon Transit: 7:10 PM
Moonset: 1:15 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%

Best Times for Fishing or Hunting

Major Periods

5:38 AM - 8:08 AM
6:40 PM - 9:10 PM

Minor Periods

11:53 AM - 1:23 PM
12:45 AM - 2:15 AM

Action Rating: 2 out of 5

Saturday, May 23, 2026

Weather Forecast

Patchy rain nearby
80.9°F
78.1°F
79.4°F
85%
0.13 in
86%
0%
15.9 mph
6


Air Quality

AQI: 1 - Good
PM2.5: 6.75 μg/m3
PM10: 9.67 μg/m3
Carbon Monoxide: 114.93 μg/m3
Nitrogen Dioxide: 4.1 μg/m3
Sulphur Dioxide: 1.41 μg/m3
Ozone: 48.54 μg/m3

Astronomical

Sunrise: 6:22 AM
Sun Transit: 1:14 PM
Sunset: 8:09 PM
Daylight: 13 hrs 47 mins
Moonrise: 1:24 PM
Moon Transit: 7:56 PM
Moonset: 1:50 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%

Best Times for Fishing or Hunting

Major Periods

6:26 AM - 8:56 AM
7:26 PM - 9:56 PM

Minor Periods

12:54 AM - 2:24 PM
1:20 AM - 2:50 AM

Action Rating: 3 out of 5

Sunday, May 24, 2026

Weather Forecast

Patchy rain nearby
81.4°F
78.9°F
79.7°F
84%
0.1 in
88%
0%
19 mph
6


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 1:14 PM
Sunset: 8:09 PM
Daylight: 13 hrs 48 mins
Moonrise: 2:24 PM
Moon Transit: 8:39 PM
Moonset: 2:21 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

7:11 AM - 9:41 AM
8:09 PM - 10:39 PM

Minor Periods

1:54 PM - 3:24 PM
1:51 AM - 3:21 AM

Action Rating: 3 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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