September weather forecast and climate
Huntington Beach, CA

The beautiful Huntington Beach, California, with a view of the pier and houses
The beautiful Huntington Beach, California, with a view of the pier and houses

Weather in September

The first month of the autumn, September, is still a warm month in Huntington Beach, California, with temperature in the range of an average low of 64.8°F (18.2°C) and an average high of 75°F (23.9°C).

Temperature

The warmest months are August and September, with an average high-temperature of 75°F (23.9°C).

Humidity

The average relative humidity in Huntington Beach is 69%.

Rainfall

In Huntington Beach, California, during September, the rain falls for 4.3 days and regularly aggregates up to 0.31" (8mm) of precipitation. Throughout the year, there are 62.4 rainfall days, and 8.94" (227mm) of precipitation is accumulated.

Ocean temperature

In September, the average ocean temperature is 66.7°F (19.3°C).
Note: For swimming, a surface water temperature of 66.7°F (19.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

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

Sunshine

The average sunshine in Huntington Beach is 10.5h.

UV index

Months with the highest UV index in Huntington Beach, California, are July through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the warmest month in Huntington Beach?

Warmest months in Huntington Beach are August and September, with an average high-temperature of 75°F (23.9°C).

What is the temperature in September in Huntington Beach?

In September, in Huntington Beach, the average high-temperature is 75°F (23.9°C), and the average low-temperature is 64.8°F (18.2°C).

What is the average humidity in September in Huntington Beach?

The average relative humidity in September in Huntington Beach, California, is 69%.

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

In Huntington Beach, during September, the rain falls for 4.3 days and regularly aggregates up to 0.31" (8mm) of precipitation.

What is the ocean temperature in September in Huntington Beach?

In Huntington Beach, the average seawater temperature in September is 66.7°F (19.3°C). 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).

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

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

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

In Huntington Beach, California, the average sunshine in September is 10.5h.

When is the highest UV index in Huntington Beach?

July through September, with an average maximum UV index of 6, are months with the highest UV index in Huntington Beach.

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

In Huntington Beach, the average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV radiation.

Average temperature in September
Huntington Beach, CA

Average temperature in September - Huntington Beach, CA
  • Average high temperature in September: 75°F

The warmest months (with the highest average high temperature) are August and September (75°F).
The month with the lowest average high temperature is December (62.2°F).

  • Average low temperature in September: 64.8°F

Months with the highest average low temperature are August and September (64.8°F).
The coldest month (with the lowest average low temperature) is February (53.2°F).

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Average pressure in September
Huntington Beach, CA

Average pressure in September - Huntington Beach, CA
  • Average pressure in September: 29.89"

The month with the highest atmospheric pressure is January (30.1").
Months with the lowest atmospheric pressure are June and September (29.89").

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Average wind speed in September
Huntington Beach, CA

Average wind speed in September - Huntington Beach, CA
  • Average wind speed in September: 5.6mph

The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is October (5.5mph).

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Average humidity in September
Huntington Beach, CA

Average humidity in September - Huntington Beach, CA
  • Average humidity in September: 69%

The month with the highest relative humidity is June (76%).
The month with the lowest relative humidity is November (60%).

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Average rainfall in September
Huntington Beach, CA

Average rainfall in September - Huntington Beach, CA
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is December (1.85").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in September
Huntington Beach, CA

Average rainfall days in September - Huntington Beach, CA
  • Average rainfall days in September: 4.3 days

The month with the highest number of rainy days is March (7.9 days).
The month with the least rainy days is June (3.1 days).

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Average sea temperature in September
Huntington Beach, CA

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

The 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).

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Average daylight in September /
Average sunshine in September
Huntington Beach, CA

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

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in September: 10.5h

Months with the most sunshine are July and August (Average sunshine: 11.9h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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Average sunshine days in September
Huntington Beach, CA

Average sunshine days in September - Huntington Beach, CA
  • Average sunshine days in September: 23 days

The month with the most sunshine days is August (25 days).
The month with the least sunshine days is February (19.5 days).

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Average UV index in September
Huntington Beach, CA

Average UV index in September - Huntington Beach, CA
  • Average UV index in September: 6

Months with the highest UV index are July, August and September (UV index 6).
Months with the lowest UV index are February, March, November and December (UV index 4).

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Average cloud cover in September
Huntington Beach, CA

Average cloud cover in September - Huntington Beach, CA
  • Average cloud cover in September: 12

Months with the most cloud cover are March and December (Cloud cover 24).
The month with the least cloud cover is August (Cloud cover 9).

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Average visibility in September
Huntington Beach, CA

Average visibility in September - Huntington Beach, CA
  • Average visibility in September: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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