Climate and monthly weather forecast
Seal Beach, CA

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Weather in January

January, like December, in Seal Beach, California, is another comfortable winter month, with an average temperature varying between 53.6°F (12°C) and 64.6°F (18.1°C). Seal Beach's transition from December to January introduces an average high-temperature of a still comfortable 64.6°F (18.1°C), marking an insignificant variation from the 62.8°F (17.1°C). Weather in January »

Weather in February

The last month of the winter, February, is another comfortable month in Seal Beach, California, with an average temperature varying between 63.5°F (17.5°C) and 52.7°F (11.5°C). Seal Beach signifies an average high-temperature of a still comfortable 63.5°F (17.5°C) in February, closely mirroring the 64.6°F (18.1°C) of January. Weather in February »

Weather in March

The first month of the spring, March, is still a refreshing month in Seal Beach, California, with an average temperature varying between 53.6°F (12°C) and 65.3°F (18.5°C). Seal Beach, California, experiences an average high-temperature of a still comfortable 65.3°F (18.5°C) in March, subtly different from February's 63.5°F (17.5°C). Weather in March »

Weather in April

April, like March, in Seal Beach, California, is another refreshing spring month, with an average temperature fluctuating between 67.1°F (19.5°C) and 55.4°F (13°C). As Seal Beach welcomes April, the average high-temperature is noted at a still enjoyable 67.1°F (19.5°C), closely aligning with the preceding month. Weather in April »

Weather in May

May, the last month of the spring in Seal Beach, is a pleasant month, with temperature in the range of an average low of 57.4°F (14.1°C) and an average high of 68.2°F (20.1°C). The onset of May brings an average high-temperature of an agreeable 68.2°F (20.1°C), nearly matching the April temperature. Weather in May »

Weather in June

June, the first month of the summer in Seal Beach, is also an agreeable month, with temperature in the range of an average high of 71.2°F (21.8°C) and an average low of 59.5°F (15.3°C). The commencement of June records an average high-temperature of a still agreeable 71.2°F (21.8°C), barely varying from May's 68.2°F (20.1°C). Weather in June »

Weather in July

July is a moderately hot summer month in Seal Beach, California, with an average temperature fluctuating between 63.1°F (17.3°C) and 75.6°F (24.2°C). The transition into July marks the average high-temperature at a moderately hot 75.6°F (24.2°C), differing minimally from June's 71.2°F (21.8°C). Weather in July »

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). 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. Weather in August »

Weather in September

September, the first month of the autumn in Seal Beach, is still a warm month, with an average temperature ranging between max 77°F (25°C) and min 64.6°F (18.1°C). The commencement of September records an average high-temperature of a still moderately hot 77°F (25°C), barely varying from August's 77.4°F (25.2°C). Weather in September »

Weather in October

October, like September, in Seal Beach, California, is another warm autumn month, with temperature in the range of an average high of 73.8°F (23.2°C) and an average low of 62.1°F (16.7°C). The transition into October shows a subtle variation to a still moderately hot 73.8°F (23.2°C) from September's 77°F (25°C) in the average high-temperature. Weather in October »

Weather in November

November, the last month of the autumn in Seal Beach, is also an agreeable month, with an average temperature ranging between min 58.3°F (14.6°C) and max 68.9°F (20.5°C). November's onset sees an average high-temperature of an agreeable 68.9°F (20.5°C), exhibiting a slight fluctuation from the previous month. Weather in November »

Weather in December

The first month of the winter, December, is still a comfortable month in Seal Beach, California, with temperature in the range of an average high of 62.8°F (17.1°C) and an average low of 53.4°F (11.9°C). December tends to be the coldest month, with temperatures averaging a daily high of 62.8°F (17.1°C) and a low of 53.4°F (11.9°C). Weather in December »
Updated: Feb 9, 2024 | Published by: Weather U.S. | About Us / Weather Forecasting / Data Sources

Frequently asked questions

How many days does it rain in Seal Beach?

In Seal Beach, California, during the entire year, the rain falls for 57.8 days and collects up to 8.82" (224mm) of precipitation.

What month is the ocean coldest in Seal Beach?

The month with the coldest seawater is January, with an average ocean temperature of 58.3°F (14.6°C).

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

The months with the lowest UV index in Seal Beach are January through March, November and December, with an average maximum UV index of 4.

When is Daylight Saving Time (DST) in Seal Beach?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Seal Beach, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

What is the most humid month in Seal Beach?

With an average relative humidity of 73%, June is the most humid month in Seal Beach, California.

What is the driest month in Seal Beach?

June is the month with the least rainfall. Rain falls for 2.3 days and accumulates 0.04" (1mm) of precipitation.

When are the longest days in Seal Beach?

The month with the longest days is June, with an average of 14h and 24min of daylight.

What months are the ocean warmest in Seal Beach?

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

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

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

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 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.

What is the least humid month in Seal Beach?

With an average relative humidity of 57%, November is the least humid month in Seal Beach, California.

What month is the coldest in Seal Beach?

In Seal Beach, the lowest temperatures are generally noted in December, averaging a high of 62.8°F (17.1°C) and a low of 53.4°F (11.9°C).

What is the wettest month in Seal Beach?

The month with the most rainfall in Seal Beach, California, is December, when the rain falls for 6.6 days and typically aggregates up to 1.77" (45mm) of precipitation.

What is the month with the shortest days in Seal Beach?

The month with the shortest days is December, with an average of 10h and 0min of daylight.

What is the month with the least sunshine in Seal Beach?

December has the least sunshine of the year, with an average of 6.7h of sunshine.

Average temperature
Seal Beach, CA

Average temperature - Seal Beach, CA

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).

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).

Average pressure
Seal Beach, CA

Average pressure - Seal Beach, CA

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).

Average wind speed
Seal Beach, CA

Average wind speed - Seal Beach, CA

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).

Average humidity
Seal Beach, CA

Average humidity - Seal Beach, CA

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

Average rainfall
Seal Beach, CA

Average rainfall - Seal Beach, CA

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

Average rainfall days
Seal Beach, CA

Average rainfall days - Seal Beach, CA

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).

Average sea temperature
Seal Beach, CA

Average sea temperature - Seal Beach, CA

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).

Average daylight / Average sunshine
Seal Beach, CA

Average daylight / Average sunshine - Seal Beach, CA

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).

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).

Average sunshine days
Seal Beach, CA

Average sunshine days - Seal Beach, CA

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

Average UV index
Seal Beach, CA

Average UV index - Seal Beach, CA

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).

Average visibility
Seal Beach, CA

Average visibility - Seal Beach, CA

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).

Seal Beach, California, USA

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