Marine Weather and Tide Forecast for Port Mansfield, TX
 | Sunrise 6:58 AM Sunset 8:15 PM Moonrise 10:51 PM Moonset 11:29 AM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
GMZ132 Expires:202608050715;;620948 Fzus54 Kbro 041845 Cwfbro
coastal waters forecast for the lower texas coast national weather service brownsville tx 145 pm cdt Tue aug 4 2026
lower texas coastal waters from baffin bay to the mouth of the rio grande out 60 nm.
seas are provided as a range of the average height of the highest 1/3 of the waves, along with the occasional height of the average highest 10 percent of the waves.
gmz130-132-135-050715- laguna madre from the port of brownsville to the arroyo colorado- laguna madre from the arroyo colorado to 5 nm north of port mansfield tx- laguna madre from 5 nm north of port mansfield to baffin bay tx- 145 pm cdt Tue aug 4 2026
Small craft caution -
Tonight - Southeast winds 15 to 20 knots, diminishing to 10 to 15 knots late this evening and overnight. Choppy on the bay, diminishing to a moderate chop late this evening and overnight.
Wednesday - Southeast winds 10 to 15 knots. A moderate chop on the bay.
Wednesday night - Southeast winds 10 to 15 knots. A moderate chop on the bay.
Thursday - Southeast winds 10 to 15 knots. A moderate chop on the bay.
Thursday night - Southeast winds 10 to 15 knots, becoming south 5 to 10 knots early in the morning. A moderate chop on the bay, diminishing to light chop early in the morning.
Friday - Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. A moderate chop on the bay.
Friday night - Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the late evening and early morning, then diminishing to around 5 knots early in the morning. A moderate chop on the bay, diminishing to light chop in the late evening and early morning, then diminishing to smooth early in the morning.
Saturday - Southeast winds around 5 knots, becoming east in the afternoon. Light chop on the bay.
Saturday night - Southeast winds 5 to 10 knots, becoming south early in the morning. Light chop on the bay, diminishing to smooth early in the morning.
Sunday - Southeast winds around 5 knots, increasing to 10 to 15 knots. Smooth on the bay, increasing to a moderate chop.
Sunday night - Southeast winds 10 to 15 knots, becoming south 5 to 10 knots early in the morning. A moderate chop on the bay, diminishing to light chop early in the morning.
coastal waters forecast for the lower texas coast national weather service brownsville tx 145 pm cdt Tue aug 4 2026
lower texas coastal waters from baffin bay to the mouth of the rio grande out 60 nm.
seas are provided as a range of the average height of the highest 1/3 of the waves, along with the occasional height of the average highest 10 percent of the waves.
gmz130-132-135-050715- laguna madre from the port of brownsville to the arroyo colorado- laguna madre from the arroyo colorado to 5 nm north of port mansfield tx- laguna madre from 5 nm north of port mansfield to baffin bay tx- 145 pm cdt Tue aug 4 2026
GMZ100 145 Pm Cdt Tue Aug 4 2026
Synopsis - Light to moderate winds and low to moderate seas will prevail along the lower texas coast with a modest pressure gradient in place. However, small craft should exercise caution will likely be needed for the laguna madre occasionally due to breezy winds.
7 Day Forecast for Marine Location Near Port Mansfield, TX
NEW! Add second zone forecast
| Padre Island Click for Map Tue -- 01:34 AM CDT 0.74 feet Low Tide Tue -- 06:32 AM CDT 1.01 feet High Tide Tue -- 06:55 AM CDT Sunrise Tue -- 12:28 PM CDT Moonset Tue -- 01:53 PM CDT 0.14 feet Low Tide Tue -- 08:14 PM CDT Sunset Tue -- 09:29 PM CDT 1.16 feet High Tide Tue -- 11:50 PM CDT Moonrise Tide / Current data from XTide NOT FOR NAVIGATION |
Padre Island, Port Mansfield Channel ent., Texas, Tide feet
| 12 am |
| 0.8 |
| 1 am |
| 0.7 |
| 2 am |
| 0.7 |
| 3 am |
| 0.8 |
| 4 am |
| 0.8 |
| 5 am |
| 0.9 |
| 6 am |
| 1 |
| 7 am |
| 1 |
| 8 am |
| 0.9 |
| 9 am |
| 0.8 |
| 10 am |
| 0.6 |
| 11 am |
| 0.4 |
| 12 pm |
| 0.3 |
| 1 pm |
| 0.2 |
| 2 pm |
| 0.1 |
| 3 pm |
| 0.2 |
| 4 pm |
| 0.3 |
| 5 pm |
| 0.5 |
| 6 pm |
| 0.8 |
| 7 pm |
| 1 |
| 8 pm |
| 1.1 |
| 9 pm |
| 1.2 |
| 10 pm |
| 1.2 |
| 11 pm |
| 1.1 |
| ICW Laguna Madre Click for Map Flood direction 347 true Ebb direction 164 true Tue -- 01:11 AM CDT 0.11 knots Max Flood Tue -- 03:42 AM CDT 0.10 knots Min Flood Tue -- 06:56 AM CDT Sunrise Tue -- 09:51 AM CDT 0.19 knots Max Flood Tue -- 12:28 PM CDT Moonset Tue -- 02:59 PM CDT -0.00 knots Slack Tue -- 07:53 PM CDT -0.31 knots Max Ebb Tue -- 08:14 PM CDT Sunset Tue -- 11:51 PM CDT Moonrise Tide / Current data from XTide NOT FOR NAVIGATION |
ICW Laguna Madre, 2.25 nmi S of Arroyo Colorado Cut (depth 3 ft), Texas Current, knots
| 12 am |
| 0.1 |
| 1 am |
| 0.1 |
| 2 am |
| 0.1 |
| 3 am |
| 0.1 |
| 4 am |
| 0.1 |
| 5 am |
| 0.1 |
| 6 am |
| 0.1 |
| 7 am |
| 0.1 |
| 8 am |
| 0.2 |
| 9 am |
| 0.2 |
| 10 am |
| 0.2 |
| 11 am |
| 0.2 |
| 12 pm |
| 0.2 |
| 1 pm |
| 0.1 |
| 2 pm |
| 0.1 |
| 3 pm |
| -0 |
| 4 pm |
| -0.1 |
| 5 pm |
| -0.2 |
| 6 pm |
| -0.2 |
| 7 pm |
| -0.3 |
| 8 pm |
| -0.3 |
| 9 pm |
| -0.3 |
| 10 pm |
| -0.2 |
| 11 pm |
| -0.1 |
FXUS64 KBRO 041712 AFDBRO
Area Forecast Discussion National Weather Service Brownsville TX 1212 PM CDT Tue Aug 4 2026
New DISCUSSION, AVIATION, MARINE
KEY MESSAGES
Updated at 1204 PM CDT Tue Aug 4 2026
- Heat Indices between 105-110F are expected each day, potentially higher.
Heat Advisories may be needed.
- Moderate (level 2 out of 4) to Major (level 3 out of 4) Heat risk will continue through Thursday.
- Low chance of isolated showers and thunderstorms along the sea breeze each afternoon, mainly late week through the weekend.
DISCUSSION
Issued at 1204 PM CDT Tue Aug 4 2026
Hot temperatures will continue plague Deep South Texas and the Rio Grande Valley through the forecast period as high pressure remains over the southwestern US. Temperatures each day will rise into the upper 90s to low 100s with heat indices between 105-110F expected. While we look to remain just shy of Heat Advisory criteria each day, a few locations may briefly exceed 111F. There is a Moderate (level 2 of 4) to Major (level 3 of 4) Heat Risk every afternoon through Thursday.
Dry conditions will prevail through much of the period. With that said, there does remain a low chance (less than 20%) of an isolated shower or thunderstorms each afternoon along the seabreeze, mainly late week into the weekend. Any showers or thunderstorms that do develop could produce gusty winds, lightning, and brief heavy rainfall.
AVIATION
(18Z TAFS)
Issued at 1204 PM CDT Tue Aug 4 2026
VFR conditions will prevail at all aerodromes. Southeasterly winds will gust to around 25 kts through this afternoon before decreasing this evening and overnight.
MARINE
Issued at 1204 PM CDT Tue Aug 4 2026
An enhanced pressure gradient along the immediate coast could result in periodic Small Craft Exercise Caution conditions along the Laguna Madre. Otherwise, expect light to moderate southeasterly winds with 2 to 3 ft seas and 5 to 6 second periods.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 81 96 81 97 / 0 0 10 10 HARLINGEN 78 99 78 100 / 0 0 0 10 MCALLEN 81 102 81 102 / 0 0 0 10 RIO GRANDE CITY 79 102 79 103 / 0 0 0 10 SOUTH PADRE ISLAND 81 89 81 89 / 0 0 10 10 BAYVIEW/PORT ISABEL 80 95 79 96 / 0 0 0 10
BRO WATCHES/WARNINGS/ADVISORIES
TX...None.
GM...None.
Area Forecast Discussion National Weather Service Brownsville TX 1212 PM CDT Tue Aug 4 2026
New DISCUSSION, AVIATION, MARINE
KEY MESSAGES
Updated at 1204 PM CDT Tue Aug 4 2026
- Heat Indices between 105-110F are expected each day, potentially higher.
Heat Advisories may be needed.
- Moderate (level 2 out of 4) to Major (level 3 out of 4) Heat risk will continue through Thursday.
- Low chance of isolated showers and thunderstorms along the sea breeze each afternoon, mainly late week through the weekend.
DISCUSSION
Issued at 1204 PM CDT Tue Aug 4 2026
Hot temperatures will continue plague Deep South Texas and the Rio Grande Valley through the forecast period as high pressure remains over the southwestern US. Temperatures each day will rise into the upper 90s to low 100s with heat indices between 105-110F expected. While we look to remain just shy of Heat Advisory criteria each day, a few locations may briefly exceed 111F. There is a Moderate (level 2 of 4) to Major (level 3 of 4) Heat Risk every afternoon through Thursday.
Dry conditions will prevail through much of the period. With that said, there does remain a low chance (less than 20%) of an isolated shower or thunderstorms each afternoon along the seabreeze, mainly late week into the weekend. Any showers or thunderstorms that do develop could produce gusty winds, lightning, and brief heavy rainfall.
AVIATION
(18Z TAFS)
Issued at 1204 PM CDT Tue Aug 4 2026
VFR conditions will prevail at all aerodromes. Southeasterly winds will gust to around 25 kts through this afternoon before decreasing this evening and overnight.
MARINE
Issued at 1204 PM CDT Tue Aug 4 2026
An enhanced pressure gradient along the immediate coast could result in periodic Small Craft Exercise Caution conditions along the Laguna Madre. Otherwise, expect light to moderate southeasterly winds with 2 to 3 ft seas and 5 to 6 second periods.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 81 96 81 97 / 0 0 10 10 HARLINGEN 78 99 78 100 / 0 0 0 10 MCALLEN 81 102 81 102 / 0 0 0 10 RIO GRANDE CITY 79 102 79 103 / 0 0 0 10 SOUTH PADRE ISLAND 81 89 81 89 / 0 0 10 10 BAYVIEW/PORT ISABEL 80 95 79 96 / 0 0 0 10
BRO WATCHES/WARNINGS/ADVISORIES
TX...None.
GM...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| PMNT2 | 2 mi | 45 min | 89°F | 89°F | 29.91 | |||
| RSJT2 - 8777812 - Rincon del San Jose; Potrero Lopeno SW, TX | 18 mi | 45 min | SSE 18G | 88°F | 89°F | 29.90 | ||
| RLIT2 | 20 mi | 45 min | SE 20G | 88°F | 29.91 | |||
| BZST2 | 35 mi | 45 min | SE 11G | 83°F | 80°F | 29.89 | ||
| PCGT2 - 8779748 - South Padre Island CGS, TX | 35 mi | 45 min | SE 14G | 85°F | 81°F | 29.91 | ||
| PTIT2 - 8779770 - Port Isabel, TX | 35 mi | 45 min | SE 18G | 87°F | 87°F | 29.92 |
Wind History for Rincon Del San Jose, TX
toggle option: (graph/table)
Link to 5 hour of 5 minute data for KHRL
Terminal Aerodrome Forecast (TAF) for KHRL
Wind History Graph: HRL
(wind in knots)
GEOS Local Image of gulf of mexico
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Brownsville, TX,
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