San Antonio Weather: September
 |
Average Day Temperature: | 58.5°F |
|
Average Night Temperature: | 50.3°F |
|
Sea Water Temperature: | 55.2°F |
|
Number of Sunny Days: | 18 days |
| Sunshine Hours: | 11.4 - 12.4 hours | |
|
Number of Rainy Days: | 0 days |
| Precipitation Totals: | 0.2 in | |
| detailed information | ||
forecast
| San Antonio |
Temperature
| San Antonio |
Air Temperature in September, °F
The highest day temperature in September 2026 was 62°F. The lowest night temperature was 48°F. The average values for day and night temperatures during September were 57.5°F и 54.3°F respectivly.
San Antonio Water Sea Temperature in September, °F
The average sea surface temperature in September 2026 for San Antonio was 58.0°F. The maximum and minimum values were 56.4°F and 59.6°F respectively.
Most of the days in September are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in September, in
Precipitation total in September for San Antonio is 0.2 in.
The average wind speed in September is 8.7 mph. This value is relatively stable throughout the year.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for San Antonio in September is 8.5 hours.
San Antonio on the Weather Map
| Algarrobo |  |
+52 |
| Antofagasta |  |
+58 |
| Arica | |
+64 |
| Chiloe |  |
+42 |
| Concepcion | |
+46 |
| Concon |  |
+52 |
| Easter Island | |
+70 |
| Iquique | |
+64 |
| La Serena | |
+58 |
| Puerto Montt | |
+44 |
| Puerto Natales | |
+34 |
| Punta Arenas |  |
+36 |
| Torres del Paine | |
+28 |
| Valparaiso | |
+52 |
| Vina del Mar | |
+52 |
| 0300 |  |
52°F | N 12 mph |
| 0600 |  |
52°F | N 14 mph |
| 0900 | |
54°F | N 13 mph |
| 1200 | |
56°F | N 12 mph |
| 1500 | |
58°F | N 14 mph |
| 1800 |  |
56°F | N 14 mph |
| 2100 |  |
54°F | NW 9 mph |
| 0000 | |
54°F | N 11 mph |