Swimming in San Antonio in september 2025: Average sea temperature in september and tide times in september 2025
Average sea temperature in San Antonio in september 2025.
In september, according to seasonal norms, the sea temperature in San Antonio is:
Minimum: 54°F
Average: 56°F
Maximum: 58°F
Other useful seasonal weather averages in september:
- Outside temperature: 52°F to 62°F
- Most common weather: "Clear/Sunny"
- The wind blows at 6.2mph
- It rains a total of 1.1in, over 1 day(s).
Should we swim in San Antonio in september?
No... The water temperature in San Antonio in september is freezing
You won't be able to swim in San Antonio in september! The water temperature is freezing, reaching as low as 54°F (and only 58°F at best)! Our advice: if you are going to San Antonio this month, plan to sightsee and forget the beach!
Note also that in september, the climate is good with an average outside temperature of 57°F, 1.1in of precipitation (over 1 days) and 78.86 % humidity.
Water and normal seasonal temperatures in San Antonio in september
| September | |||
| Average sea temperature | 56°F | ||
| Minimum sea temperature | 54°F | ||
| Maximum sea temperature | 58°F | ||
| Average outside temperature | 58°F | ||
| Maximum outside temperature | 63°F | ||
| Minimum outside temperature | 54°F | ||
| Wind speed | 13.1mph | ||
| Wind temperature | 50°F | ||
| Precipitation | 1.1in | ||
| Number of days of rain | 1 jour(s) (4%) | ||
| Humidity | 79% | ||
| Visibility in kilometers | 9.57km | ||
| Cloud cover | 24% | ||
| Our opinion | freezing swimming |
Chart of the tides in september 2025
Tide times in september 2025 in San Antonio
Swim elsewhere in Chile in september
| City | Average T° | Min. T° | Max. T° | Our opinion | Easter island in september | 70°F | 71°F | cool swimming | Iquique in september | 63°F | 65°F | cool swimming | Punta Arenas in september | 43°F | 44°F | freezing swimming | Valparaiso in september | 56°F | 58°F | freezing swimming | Constitucion in september | 56°F | 57°F | freezing swimming | Quellon in september | 51°F | 53°F | freezing swimming | Viña del Mar in september | 56°F | 58°F | freezing swimming |