Galveston to Tampa — sea route & marine weather
The sea route from Galveston (USGLS) to Tampa (USTPA) is about 688 nm — about 3 days at 10 kn. Along the route today (Aug 3): WSW wind 1–17 kn, waves 0.5–1.4 m. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 688 nm |
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| Passage time at 10 kn | about 3 days |
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| Great-circle distance | 656 nm |
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| Galveston | 29°19.0′N 94°47.0′W |
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| Tampa | 27°55.0′N 82°27.0′W |
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| Reference vessel | 4.5 m draft, 10 kn cruise |
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10-day marine forecast — along the route
| Date | Wind | Gusts | Waves |
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| WSW 1–17 kn | 19 kn | 0.5–1.4 m |
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| S 0–12 kn | 16 kn | 0.3–1.1 m |
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| SSW 1–8 kn | 14 kn | 0.3–0.7 m |
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| SSW 1–10 kn | 14 kn | 0.3–0.9 m |
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| SSE 1–14 kn | 18 kn | 0.5–0.8 m |
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| S 1–12 kn | 15 kn | 0.4–0.9 m |
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| SE 5–9 kn | 11 kn | 0.3–0.8 m |
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| SSE 2–9 kn | 15 kn | 0.3–0.8 m |
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| SSW 4–6 kn | 16 kn | 0.3–0.9 m |
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| S 4–6 kn | 15 kn | 0.2–0.9 m |
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Forecast from the ECMWF IFS model run , waves from ECMWF WAM. Updated with each model cycle; the live chart below recalculates for your departure time and vessel.
Frequently asked
How far is it from Galveston to Tampa by sea?
The water route is 688 nm (1,274 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Tampa to Galveston.
How long does the passage from Galveston to Tampa take?
about 3 days at a 10 kn cruise. Scale by your own speed: at half the speed it takes about twice as long. The planner on this page recalculates for your vessel and live weather.
What is the weather between Galveston and Tampa today?
Along the route today, per the ECMWF IFS run 2026-08-03 12z: WSW wind 1–17 kn, waves 0.5–1.4 m. The day-by-day table on this page covers the next 10 days.