September weather forecast and climate
Irvine, CA

What is the temperature in September in Irvine?

In Irvine, in September, the average high-temperature is 89.1°F (31.7°C), and the average low-temperature is 58.5°F (14.7°C).

How much does it rain in Irvine in September?

Throughout September, 0.2" (5.1mm) of precipitation is accumulated.
Average temperature in September - Irvine, CA
  • Average high temperature in September: 89.1°F

The warmest month (with the highest average high temperature) is August (90.3°F).
The month with the lowest average high temperature is December (67.1°F).

  • Average low temperature in September: 58.4°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is December (45.6°F).

Average rainfall in September - Irvine, CA
  • Average rainfall in September: 0.2"

The wettest month (with the highest rainfall) is February (3.3").
Driest months (with the lowest rainfall) are June, July and August (0.1").

Average daylight in September - Irvine, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 9.9h).