Imperial Beach
California, USA
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Imperial Beach, CA

September, the first month of the autumn, in Imperial Beach, is still a warm month, with average temperature varying between 65.1°F (18.4°C) and 75.9°F (24.4°C).

Temperature

In Imperial Beach, California, the average high-temperature is relatively the same as in August - a still moderately hot 75.9°F (24.4°C). In Imperial Beach, California, the average low-temperature is 65.1°F (18.4°C).

Humidity

In Imperial Beach, the average relative humidity is 72.7%.

Rainfall

In September, in Imperial Beach, California, the rain falls for 1.2 days. In Imperial Beach, during the entire year, the rain falls for 41.5 days.

Daylight

The average length of the day in Imperial Beach is 12.4h.

Sunshine

In Imperial Beach, the average sunshine in September is 8.4h.

What is the temperature in September in Imperial Beach?

In September, in Imperial Beach, the average high-temperature is 75.9°F (24.4°C), and the average low-temperature is 65.1°F (18.4°C).

What is the average humidity in September in Imperial Beach?

The average relative humidity in September is 72.7%.

How many days does it rain in September in Imperial Beach?

In September, in Imperial Beach, California, the rain falls for 1.2 days.

How many hours of daylight does Imperial Beach have in September?

The average length of the day in September in Imperial Beach is 12.4h.

How many hours of sunshine does Imperial Beach have in September?

The average sunshine in September in Imperial Beach is 8.4h.
Average temperature in September - Imperial Beach, CA
  • Average high temperature in September: 75.9°F

The warmest month (with the highest average high temperature) is August (76.4°F).
The month with the lowest average high temperature is December (64.7°F).

  • Average low temperature in September: 65.2°F

The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is December (48.4°F).

Average humidity in September - Imperial Beach, CA
  • Average humidity in September: 72.7%

The month with the highest relative humidity is July (74.6%).
The month with the lowest relative humidity is January (63.1%).

Average rainfall days in September - Imperial Beach, CA
  • Average rainfall days in September: 1.2 days

The month with the highest number of rainy days is February (7.1 days).
The month with the lowest number of rainy days is August (0.4 days).

Average daylight in September / Average sunshine in September - Imperial Beach, CA
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.3h).
The month with shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 8.4h

The month with most sunshine is July (Average sunshine: 9.8h).
The month with least sunshine is December (Average sunshine: 7.5h).