Puerto Rico · 1991–2020 normal
San Antonio in
September.
Typical September weather in San Antonio: 31°C by day, 22.5°C at night, 164 mm of rain over 13.5 wet days. These are measured 1991–2020 station normals, not a forecast.
Typical high31°C
Typical low22.5°C
Rain164 mm
Wet days13.5
Comfort score 36 this month (February leads the year at 72). Daylight is calculated as 12 h 13 from latitude 18.44°. Open-water sea temperature is 29.0°C (22 km from the place centre).
Event window
Warm sea in September
The nearest open-water NOAA OISST 1991–2020 cell averages 29.0°C in September. A sheltered bay can run warmer than that open-water cell.
The evidence behind this page
One month,
from the same station.
- Place identity
- GeoNames 4568077
- NOAA station
- RQC00664702 · ISABELA SUBSTN
- Station distance
- 13.1 km from the place centre
- Coverage
- Good coverage · 23 usable years
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.