Monthly weather forecast and climate
Opal Cliffs, CA

Weather in January

January, like December, is another mild winter month in Opal Cliffs, California, with average temperature varying between 46.9°F (8.3°C) and 58.6°F (14.8°C). In Opal Cliffs, the average high-temperature is almost the same as in December - a still moderate 58.6°F (14.8°C). Weather in January »

Weather in February

The last month of the winter, February, is another mild month in Opal Cliffs, California, with average temperature ranging between max 59.4°F (15.2°C) and min 45.5°F (7.5°C). In Opal Cliffs, the average high-temperature is practically the same as in January - a still moderate 59.4°F (15.2°C). Weather in February »

Weather in March

The first month of the spring, March, is also a moderate month in Opal Cliffs, California, with average temperature ranging between max 60.4°F (15.8°C) and min 45.9°F (7.7°C). In Opal Cliffs, the average high-temperature is almost the same as in February - a still moderate 60.4°F (15.8°C). Weather in March »

Weather in April

April is a comfortable spring month in Opal Cliffs, California, with average temperature fluctuating between 63.1°F (17.3°C) and 47.3°F (8.5°C). In April, the average high-temperature is relatively the same as in March - a comfortable 63.1°F (17.3°C). Weather in April »

Weather in May

The last month of the spring, May, is also an enjoyable month in Opal Cliffs, California, with average temperature varying between 64.9°F (18.3°C) and 49.1°F (9.5°C). In Opal Cliffs, California, the average high-temperature is practically the same as in April - a still enjoyable 64.9°F (18.3°C). Weather in May »

Weather in June

June, the first month of the summer, in Opal Cliffs, is a pleasant month, with average temperature fluctuating between 51.4°F (10.8°C) and 70°F (21.1°C). In June, the average high-temperature is relatively the same as in May - an agreeable 70°F (21.1°C). Weather in June »

Weather in July

July, the same as June, in Opal Cliffs, California, is another pleasant summer month, with average temperature fluctuating between 53.4°F (11.9°C) and 72.5°F (22.5°C). In July, the average high-temperature is essentially the same as in June - a still pleasant 72.5°F (22.5°C). Weather in July »

Weather in August

August, the last month of the summer, in Opal Cliffs, is also an agreeable month, with average temperature varying between 54.7°F (12.6°C) and 73°F (22.8°C). The warmest months are August and September, with an average high-temperature of 73°F (22.8°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Opal Cliffs, California, with average temperature fluctuating between 55.2°F (12.9°C) and 73°F (22.8°C). The warmest months are August and September, with an average high-temperature of 73°F (22.8°C). Weather in September »

Weather in October

October, like September, is another pleasant autumn month in Opal Cliffs, California, with average temperature varying between 69.4°F (20.8°C) and 53.8°F (12.1°C). In Opal Cliffs, the average high-temperature in October is essentially the same as in September - a still pleasant 69.4°F (20.8°C). Weather in October »

Weather in November

November, the last month of the autumn, in Opal Cliffs, is also an enjoyable month, with average temperature fluctuating between 62.8°F (17.1°C) and 49.6°F (9.8°C). In Opal Cliffs, the average high-temperature slightly decreases, from an agreeable 69.4°F (20.8°C) in October, to an enjoyable 62.8°F (17.1°C). Weather in November »

Weather in December

December, the first month of the winter, in Opal Cliffs, is still a mild month, with average temperature fluctuating between 46.2°F (7.9°C) and 57.2°F (14°C). December is the coldest month, with an average high-temperature of 57.2°F (14°C) and an average low-temperature of 46.2°F (7.9°C). Weather in December »
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FAQ

How much does it rain in Opal Cliffs?

In Opal Cliffs, during the entire year, the rain falls for 77.9 days and collects up to 14.45" (367mm) of precipitation.

When is the lowest UV index in Opal Cliffs?

Months with the lowest UV index in Opal Cliffs are February and November, with an average maximum UV index of 3.

What is the most humid month in Opal Cliffs?

With an average relative humidity of 75%, March is the most humid month in Opal Cliffs, California.

What is the month with the coldest ocean in Opal Cliffs?

With an average ocean temperature of 53.8°F (12.1°C), April is the month with the coldest seawater in Opal Cliffs, California.

When are the longest days in Opal Cliffs?

June has the longest days of the year, with an average of 14.7h of daylight.

When is the highest UV index in Opal Cliffs?

June through September, with an average maximum UV index of 5, are months with the highest UV index in Opal Cliffs, California.

What is the driest month in Opal Cliffs?

July and August are months with the least rain in Opal Cliffs when the rain falls for 2.8 days and typically aggregates up to 0.04" (1mm) of rain.

What month has the most sunshine in Opal Cliffs?

The month with the most sunshine is July, with an average of 11.7h of sunshine.

What are the warmest months in Opal Cliffs?

August and September, with an average high-temperature of 73°F (22.8°C), are warmest months in Opal Cliffs, California.

What are the months with the warmest ocean in Opal Cliffs?

August and September, with an average ocean temperature of 58.1°F (14.5°C), are months with the warmest seawater in Opal Cliffs.

What is the least humid month in Opal Cliffs?

The least humid month is October, with an average relative humidity of 68%.

What is the coldest month in Opal Cliffs?

December is the coldest month in Opal Cliffs, with an average high-temperature of 57.2°F (14°C) and an average low-temperature of 46.2°F (7.9°C).

What is the wettest month in Opal Cliffs?

The month with the most rainfall in Opal Cliffs is December when the rain falls for 10.3 days and typically aggregates up to 2.8" (71mm) of precipitation.

What is the month with the shortest days in Opal Cliffs?

The month with the shortest days is December, with an average of 9.7h of daylight.

What is the month with the least sunshine in Opal Cliffs?

With an average of 5.8h of sunshine, December has the least sunshine of the year in Opal Cliffs, California.

Average temperature
Opal Cliffs, CA

Average temperature - Opal Cliffs, CA

The warmest months (with the highest average high temperature) are August and September (73°F).
The month with the lowest average high temperature is December (57.2°F).

The month with the highest average low temperature is September (55.2°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).

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Average pressure
Opal Cliffs, CA

Average pressure - Opal Cliffs, CA

The month with the highest atmospheric pressure is January (30.13").
The month with the lowest atmospheric pressure is September (29.92").

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Average wind speed
Opal Cliffs, CA

Average wind speed - Opal Cliffs, CA

The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average rainfall
Opal Cliffs, CA

Average rainfall - Opal Cliffs, CA

The wettest month (with the highest rainfall) is December (2.8").
The driest months (with the least rainfall) are July and August (0.04").

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Average rainfall days
Opal Cliffs, CA

Average rainfall days - Opal Cliffs, CA

The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (1.2 days).

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Average sea temperature
Opal Cliffs, CA

Average sea temperature - Opal Cliffs, CA

The best months for swimming (with the highest average sea temperature) are August and September (58.1°F).
The coldest month (with the lowest average sea temperature) is April (53.8°F).

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Average daylight / Average sunshine
Opal Cliffs, CA

Average daylight / Average sunshine - Opal Cliffs, CA

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.7h).

The month with the most sunshine is July (Average sunshine: 11.7h).
The month with the least sunshine is December (Average sunshine: 5.8h).

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Average sunshine days
Opal Cliffs, CA

Average sunshine days - Opal Cliffs, CA

The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (16.4 days).

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Average UV index
Opal Cliffs, CA

Average UV index - Opal Cliffs, CA

Months with the highest UV index are June, July, August and September (UV index 5).
Months with the lowest UV index are February and November (UV index 3).

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Average visibility
Opal Cliffs, CA

Average visibility - Opal Cliffs, CA

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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