Mexico · 1991–2020 normal

San Mateo del Mar in
September.

Typical September weather in San Mateo del Mar: 31°C by day, 22.5°C at night, 245 mm of rain over 11 wet days. These are measured 1991–2020 station normals, not a forecast.

Typical high31°C
Typical low22.5°C
Rain245 mm
Wet days11

Comfort score 27 this month (January leads the year at 76). Daylight is calculated as 12 h 12 from latitude 16.21°. Open-water sea temperature is 29.7°C (15 km from the place centre).

Event window

Warm sea in September

The nearest open-water NOAA OISST 1991–2020 cell averages 29.7°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 3518382
NOAA station
MXN00020048 · JUCHITAN DE ZARAGOZA
Station distance
25 km from the place centre
Coverage
Good coverage · 21 usable years
Important limit
Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.