August weather forecast
Seal Beach, CA

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Weather in August

August, the last month of the summer in Seal Beach, is also a moderately hot month, with an average temperature fluctuating between 65.3°F (18.5°C) and 77.4°F (25.2°C).

Temperature

Seal Beach's temperatures peak on average in August, reaching 77.4°F (25.2°C) at their highest and 65.3°F (18.5°C) at their lowest.

Humidity

The average relative humidity in August in Seal Beach is 68%.

Rainfall

In Seal Beach, in August, it is raining for 2.3 days, with typically 0.16" (4mm) of accumulated precipitation. Throughout the year, there are 57.8 rainfall days, and 8.82" (224mm) of precipitation is accumulated.

Ocean temperature

July and August, with an average ocean temperature of 67.8°F (19.9°C), are months with the warmest seawater in Seal Beach.
Note: Most people find swimming in 67.8°F (19.9°C) unenjoyable. As the water temperature falls from 69.8°F (21°C) to 59°F (15°C), controlling one's breathing becomes harder.

Daylight

In Seal Beach, the average length of the day in August is 13h and 22min.
On the first day of August, sunrise is at 6:05 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:18 pm PDT.

Sunshine

With an average of 12h of sunshine, August has the most sunshine of the year in Seal Beach.

UV index

The months with the highest UV index in Seal Beach are July through September, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 6 during August translates into the following directions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

What month is the hottest in Seal Beach?

August tends to be the warmest month, with temperatures averaging a daily high of 77.4°F (25.2°C) and a low of 65.3°F (18.5°C).

What is the temperature in August in Seal Beach?

In Seal Beach, in August, the average high-temperature is 77.4°F (25.2°C), and the average low-temperature is 65.3°F (18.5°C).

What is the average humidity in August in Seal Beach?

The average relative humidity in August is 68%.

How many days does it rain in August in Seal Beach?

In Seal Beach, California, in August, during 2.3 rainfall days, 0.16" (4mm) of precipitation is typically accumulated.

When is the ocean warmest in Seal Beach?

July and August, with an average ocean temperature of 67.8°F (19.9°C), are months with the warmest seawater in Seal Beach.

What is the ocean temperature in August in Seal Beach?

In Seal Beach, in August, the average water temperature is 67.8°F (19.9°C). Swimming in 67.8°F (19.9°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

How many hours of daylight does Seal Beach have in August?

In August, the average day length in Seal Beach, California, is 13h and 22min.

What time are sunrise and sunset in August in Seal Beach?

In August, on the first day of the month, sunrise is at 6:05 am and sunset at 7:52 pm. On the last day of the month, in Seal Beach, sunrise is at 6:26 am and sunset at 7:18 pm PDT.

What month has the most sunshine in Seal Beach?

With an average of 12h of sunshine, August has the most sunshine of the year in Seal Beach.

How long on average sun shines in August in Seal Beach?

In Seal Beach, California, the average sunshine duration in August is 12h.

What is the month with the highest UV index in Seal Beach?

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

What is the UV index intensity in August in Seal Beach?

In August, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Seal Beach, CA

Average temperature in August - Seal Beach, CA
  • Average high temperature in August: 77.4°F

The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is December (62.8°F).

  • Average low temperature in August: 65.3°F

The month with the highest average low temperature is August (65.3°F).
The coldest month (with the lowest average low temperature) is February (52.7°F).

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Average pressure in August
Seal Beach, CA

Average pressure in August - Seal Beach, CA
  • Average pressure in August: 29.9"Hg

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

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Average wind speed in August
Seal Beach, CA

Average wind speed in August - Seal Beach, CA
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest months (with the lowest average wind speed) are August, September and October (5.3mph).

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Average humidity in August
Seal Beach, CA

Average humidity in August - Seal Beach, CA
  • Average humidity in August: 68%

The month with the highest relative humidity is June (73%).
The month with the lowest relative humidity is November (57%).

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Average rainfall in August
Seal Beach, CA

Average rainfall in August - Seal Beach, CA
  • Average rainfall in August: 0.16"

The wettest month (with the highest rainfall) is December (1.77").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in August
Seal Beach, CA

Average rainfall days in August - Seal Beach, CA
  • Average rainfall days in August: 2.3 days

The month with the highest number of rainy days is March (8.1 days).
The months with the least rainy days are June and August (2.3 days).

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Average sea temperature in August
Seal Beach, CA

Average sea temperature in August - Seal Beach, CA
  • Average sea temperature in August: 67.9°F

The best months for swimming (with the highest average sea temperature) are July and August (67.9°F).
The coldest month (with the lowest average sea temperature) is January (58.3°F).

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Average daylight in August /
Average sunshine in August
Seal Beach, CA

Average daylight in August / Average sunshine in August - Seal Beach, CA
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in August: 12h and 0min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

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Average sunshine days in August
Seal Beach, CA

Average sunshine days in August - Seal Beach, CA
  • Average sunshine days in August: 26.3 days

The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is February (19.3 days).

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Average UV index in August
Seal Beach, CA

Average UV index in August - Seal Beach, CA
  • Average UV index in August: 6

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

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Average cloud cover in August
Seal Beach, CA

Average cloud cover in August - Seal Beach, CA
  • Average cloud cover in August: 7

The months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in August
Seal Beach, CA

Average visibility in August - Seal Beach, CA
  • Average visibility in August: 6mi

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

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Seal Beach, California, USA

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