Galveston Bay Marine Forecast
| Today...South Winds 10 To 15 Knots. Bay Waters Slightly Choppy. |
| Tonight...South Winds 10 To 15 Knots, Diminishing To Around 10 Knots After Midnight. Bay Waters Slightly Choppy, Diminishing To Smooth After Midnight. |
| Thursday...Southwest Winds Around 10 Knots, Becoming South 10 To 15 Knots In The Afternoon. Bay Waters Smooth, Increasing To Slightly Choppy In The Afternoon. |
| Thursday Night...Southwest Winds 10 To 15 Knots. Bay Waters Slightly Choppy. |
| Friday...Southwest Winds Around 10 Knots, Becoming South 10 To 15 Knots In The Afternoon. Bay Waters Smooth, Increasing To Slightly Choppy In The Afternoon. |
| Friday Night...Southwest Winds 10 To 15 Knots. Bay Waters Slightly Choppy. |
| Saturday...Southwest Winds Around 10 Knots, Becoming South 10 To 15 Knots In The Afternoon. Bay Waters Smooth, Increasing To Slightly Choppy In The Afternoon. |
| Saturday Night...South Winds 10 To 15 Knots. Bay Waters Slightly Choppy. |
| Sunday...South Winds 10 To 15 Knots. Bay Waters Slightly Choppy. |
| Sunday Night...South Winds 10 To 15 Knots. Bay Waters Slightly Choppy. |
| Area Forecast Discussion National Weather Service Houston/Galveston TX 1223am CDT Wednesday Mar 18 2026 ...NewARINE... .KEY MESSAGES... - High pressure remains in control through the week, resulting in dry and warmer conditions with light southerly winds. - A significant warming trend Friday into the weekend. Some locations may see the first 90-degree days of the year. Issued at 1220am CDT Wednesday Mar 18 2026 Quiet weather is expected throughout the next several days as surface high pressure remains in the vicinity with ridging aloft. Currently the upper level ridge is over the West Coast centered over SoCal/Baja California with the midlevel ridge's heigheights over 590 dam. These 500mb heigheights are well above the 99th percentile in both the GEFS M-Climate and NAEFS Climate percentiles for this time of the year. Midlevel heigheights over SE Texas should climb above the 90th climatological percentile on Thursday, and stay there for the remainder of the forecast period. By Friday, 850mb temperatures reach 14-17C, in 90th to 97.5th percentile compared to NAEFS climate and are expected to remain there through the weekend. In addition, the ECMWF (European Centre for Medium-Range Weather Forecasts) Extreme Forecast Index (EFI) shows values of 0.70-0.95 for max temperature, with shift of tales values approaching 1-2 over portions of eastern Texas during this period. This comes paired with solid west-southeasterly flow in the lower levels of the atmosphere with low PWs generally below 0.75 inches. Very much a potent signal rather high afternoon temperatures for this spring, around 5 to 17 degrees above normal. An approaching shortwave further upstream should fatten out the ridge late in the weekend, easing down on max temps, but still keeping quiet weather in place. Overall warm conditions and slim rain chances are expected through the forecast period. We'll see some cool lows early this morning, generally in the 40s inland and 50s near the coast. During the afternoon, highs should reach the upper 60s/70s. Friday through Sunday will be the hottest period in the forecast with highs reaching the upper 70s/lower 90s and morning lows in the upper 50s/60s. High temperatures ease off slightly next week, but remain in the 70s/80s during the afternoon hours. 03 Marine Issued at 1220am CDT Wednesday Mar 18 2026 Light to moderate south-southwest winds and low seas are expected over the next several days. Rain chances remain slim throughout this period as high pressure looms in the vicinity. 03 NOAA Houston/Galveston TX Office: Watches - Warnings - Advisories TX...None. GM...None. |
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