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

September weather forecast and climate
Laguna Beach, CA

Unique and breathtaking aerial views over the scenic Three Arch Bay spot on Laguna Beach in California, with light waves seen on the beach at twilight
Unique and breathtaking aerial views over the scenic Three Arch Bay spot on Laguna Beach in California, with light waves seen on the beach at twilight
The first month of the autumn, September, is still a warm month in Laguna Beach, California, with average temperature fluctuating between 80.1°F (26.7°C) and 59°F (15°C).

Temperature

The warmest months are August and September, with an average high-temperature of 80.1°F (26.7°C).

Rainfall

In Laguna Beach, during September, the rain falls for 1 days and regularly aggregates up to 0.4" (8.9mm) of precipitation. In Laguna Beach, during the entire year, the rain falls for 34 days and collects up to 13.6" (344.3mm) of precipitation.

Ocean temperature

In September, the average ocean temperature is 66.7°F (19.3°C).
Note: For most, swimming in 66.7°F (19.3°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

In September, the average length of the day in Laguna Beach is 12.4h.

Sunshine

In Laguna Beach, the average sunshine is 9h.

UV index

The average daily maximum UV index in September is 8. A UV Index estimate of 8 to 10 represents a very high threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: In September, the average maximum UV index of 8 translate into the following recommendations:
Take special precautions, as unprotected skin can be damaged and can burn quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What are the warmest months in Laguna Beach?

August and September, with an average high-temperature of 80.1°F (26.7°C), are warmest months in Laguna Beach, California.

What is the temperature in September in Laguna Beach?

In Laguna Beach, in September, the average high-temperature is 80.1°F (26.7°C), and the average low-temperature is 59°F (15°C).

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

In Laguna Beach, during September, the rain falls for 1 days and regularly aggregates up to 0.4" (8.9mm) of precipitation.

What is the ocean temperature in September in Laguna Beach?

In Laguna Beach, California, the average seawater temperature in September is 66.7°F (19.3°C). Swimming in 66.7°F (19.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

What is the average length of the day in September in Laguna Beach?

In Laguna Beach, California, the average length of the day in September is 12.4h.

How long on average sun shines in September in Laguna Beach?

In Laguna Beach, the average sunshine in September is 9h.

What is the UV index intensity in September in Laguna Beach?

In Laguna Beach, California, the average daily maximum UV index in September is 8. A UV Index of 8 to 10 symbolizes a very high hazard to health from the exposure to the Sun's UV rays.
Average temperature in September - Laguna Beach, CA
  • Average high temperature in September: 80°F

Warmest months (with the highest average high temperature) are August and September (80°F).
The month with the lowest average high temperature is December (67°F).

  • Average low temperature in September: 59°F

The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is December (43°F).

Average rainfall in September - Laguna Beach, CA
  • Average rainfall in September: 0.4"

The wettest month (with the highest rainfall) is February (3").
The driest month (with the lowest rainfall) is July (0").

Average rainfall days in September - Laguna Beach, CA
  • Average rainfall days in September: 1 days

The month with the highest number of rainy days is March (6 days).
Months with the lowest number of rainy days are June and July (0 days).

Average sea temperature in September - Laguna Beach, CA
  • Average sea temperature in September: 66.8°F

Best months for swimming (with the highest average sea temperature) are July and August (67.7°F).
The coldest month (with the lowest average sea temperature) is January (58.5°F).

Average daylight in September / Average sunshine in September - Laguna Beach, 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: 10h).

  • Average sunshine in September: 9h

Months with most sunshine are July and August (Average sunshine: 11h).
Months with least sunshine are January, November and December (Average sunshine: 7).

Average UV index in September - Laguna Beach, CA
  • Average UV index in September: 8

Months with the highest UV index are June, July and August (UV index 10).
Months with the lowest UV index are January and December (UV index 3).