MyCruiseForecast

Texas, USA

San Antonio cruise weather by month

What to expect when your ship is in San Antonio in any month: temperatures, how often it rains, wind, sea temperature and wave heights.

Weather in San Antonio by month

Average highs run from 63°F (17°C) in January to 98°F (37°C) in August. Rain falls on the fewest days in February and the most in April. Sea temperature and wave heights are for the water just off the port.

Typical conditions, 2022–2025 climate record (ECMWF). Rain days are days with at least 1 mm of rain or melted snow. These are averages, not a forecast.
MonthHigh / lowRain daysWindSea tempTypical seas
January63 / 43°F17 / 6°C26%12 mph19 km/h––
February68 / 46°F20 / 8°C17%12 mph20 km/h––
March78 / 56°F26 / 13°C29%14 mph22 km/h––
April83 / 63°F28 / 17°C43%14 mph22 km/h––
May89 / 70°F32 / 21°C42%13 mph21 km/h––
June96 / 75°F36 / 24°C32%13 mph21 km/h––
July96 / 77°F36 / 25°C26%12 mph20 km/h––
August98 / 78°F37 / 25°C26%12 mph20 km/h––
September93 / 74°F34 / 23°C22%11 mph18 km/h––
October85 / 65°F29 / 18°C21%11 mph19 km/h––
November71 / 54°F22 / 12°C33%11 mph18 km/h––
December69 / 51°F21 / 11°C28%11 mph17 km/h––

Check the forecast for your sailing

Upcoming cruises in San Antonio

1 ship from 1 cruise line is scheduled here, 1 visit in total. The next 1:

DateShipStopSailing
Fri, Dec 42026AIDAsolAIDA CruisesCalls126 nights from Hamburg

Ships that visit San Antonio

Nearby cruise ports

Wave heights are significant wave height on the Douglas sea state scale. What the numbers mean for a cruise. Sources and method are on the about page.