Monthly weather forecast and climate
Oceanside, CA

The beautiful clean beach of Oceanside City in California
The beautiful clean beach of Oceanside City in California

Weather in January

January, like December, in Oceanside, California, is another comfortable winter month, with temperature in the range of an average high of 64°F (17.8°C) and an average low of 50.7°F (10.4°C). In January, the average high-temperature is essentially the same as in December - a still enjoyable 64°F (17.8°C). Weather in January »

Weather in February

The last month of the winter, February, is another comfortable month in Oceanside, California, with average temperature varying between 63.1°F (17.3°C) and 49.6°F (9.8°C). In February, the average high-temperature is practically the same as in January - a still enjoyable 63.1°F (17.3°C). Weather in February »

Weather in March

The first month of the spring, March, is also an enjoyable month in Oceanside, California, with temperature in the range of an average high of 64.6°F (18.1°C) and an average low of 51.3°F (10.7°C). In March, the average high-temperature is essentially the same as in February - a still comfortable 64.6°F (18.1°C). Weather in March »

Weather in April

April, like March, in Oceanside, California, is another enjoyable spring month, with temperature in the range of an average high of 66.7°F (19.3°C) and an average low of 52.7°F (11.5°C). In Oceanside, the average high-temperature in April is practically the same as in March - a still enjoyable 66.7°F (19.3°C). Weather in April »

Weather in May

May, the last month of the spring, in Oceanside, is an agreeable month, with average temperature fluctuating between 55°F (12.8°C) and 68.2°F (20.1°C). In Oceanside, the average high-temperature is essentially the same as in April - an agreeable 68.2°F (20.1°C). Weather in May »

Weather in June

The first month of the summer, June, is also an agreeable month in Oceanside, California, with average temperature fluctuating between 57.7°F (14.3°C) and 72.1°F (22.3°C). In Oceanside, the average high-temperature in June is essentially the same as in May - a still pleasant 72.1°F (22.3°C). Weather in June »

Weather in July

July in Oceanside, California, is a moderately hot summer month, with average temperature varying between 63.1°F (17.3°C) and 76.3°F (24.6°C). In July, the average high-temperature is practically the same as in June - a moderately hot 76.3°F (24.6°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Oceanside, California, with average temperature ranging between min 64.2°F (17.9°C) and max 78.6°F (25.9°C). August is the warmest month, with an average high-temperature of 78.6°F (25.9°C) and an average low-temperature of 64.2°F (17.9°C). Weather in August »

Weather in September

September, the first month of the autumn, in Oceanside, is also a moderately hot month, with average temperature ranging between min 63.5°F (17.5°C) and max 77.9°F (25.5°C). In Oceanside, the average high-temperature is essentially the same as in August - a still moderately hot 77.9°F (25.5°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Oceanside, California, with average temperature ranging between min 60.3°F (15.7°C) and max 73.4°F (23°C). In Oceanside, the average high-temperature is almost the same as in September - a still warm 73.4°F (23°C). Weather in October »

Weather in November

The last month of the autumn, November, is another pleasant month in Oceanside, California, with temperature in the range of an average high of 68.5°F (20.3°C) and an average low of 55.4°F (13°C). In Oceanside, California, the average high-temperature is essentially the same as in October - a pleasant 68.5°F (20.3°C). Weather in November »

Weather in December

The first month of the winter, December, is still a comfortable month in Oceanside, California, with average temperature ranging between max 62.4°F (16.9°C) and min 50.4°F (10.2°C). December is the coldest month, with an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 50.4°F (10.2°C). Weather in December »
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FAQ

How many days does it rain in Oceanside?

Throughout the year, there are 68.2 rainfall days, and 9.49" (241mm) of precipitation is accumulated.

What are the months with the coldest ocean in Oceanside?

Months with the coldest seawater in Oceanside, California, are January and February, with an average ocean temperature of 58.6°F (14.8°C).

What is the month with the lowest UV index in Oceanside?

Months with the lowest UV index in Oceanside, California, are January through March, November and December, with an average maximum UV index of 4.

What is the most humid month in Oceanside?

The most humid month is June, with an average relative humidity of 73%.

What is the driest month in Oceanside?

June is the month with the least rainfall. Rain falls for 2.7 days and accumulates 0.12" (3mm) of precipitation.

When are the longest days in Oceanside?

June has the longest days of the year, with an average of 14.3h of daylight.

What are the months with the warmest ocean in Oceanside?

July and August, with an average ocean temperature of 68°F (20°C), are months with the warmest seawater in Oceanside.

What are the months with the most sunshine in Oceanside?

July and August, with an average of 12h of sunshine, are months with the most sunshine in Oceanside, California.

What are the months with the highest UV index in Oceanside?

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

What is the warmest month in Oceanside?

The warmest month in Oceanside is August, with an average high-temperature of 78.6°F (25.9°C) and an average low-temperature of 64.2°F (17.9°C).

What is the least humid month in Oceanside?

November is the least humid month in Oceanside, with an average relative humidity of 60%.

What is the coldest month in Oceanside?

December is the coldest month, with an average high-temperature of 62.4°F (16.9°C) and an average low-temperature of 50.4°F (10.2°C).

What is the rainiest month in Oceanside?

The month with the most rainfall is December when the rain falls for 6.8 days and typically aggregates up to 1.97" (50mm) of precipitation.

What is the month with the shortest days in Oceanside?

With an average of 10h of daylight, December has the shortest days of the year in Oceanside.

What is the month with the least sunshine in Oceanside?

December has the least sunshine of the year in Oceanside, California, with an average of 6.6h of sunshine.

Average temperature
Oceanside, CA

Average temperature - Oceanside, CA

The warmest month (with the highest average high temperature) is August (78.6°F).
The month with the lowest average high temperature is December (62.4°F).

The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is February (49.6°F).

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Average pressure
Oceanside, CA

Average pressure - Oceanside, CA

The month with the highest atmospheric pressure is January (30.09").
Months with the lowest atmospheric pressure are June and September (29.88").

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Average wind speed
Oceanside, CA

Average wind speed - Oceanside, CA

The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).

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Average rainfall
Oceanside, CA

Average rainfall - Oceanside, CA

The wettest month (with the highest rainfall) is December (1.97").
The driest month (with the least rainfall) is June (0.12").

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Average rainfall days
Oceanside, CA

Average rainfall days - Oceanside, CA

The month with the highest number of rainy days is March (8 days).
The month with the least rainy days is June (2.7 days).

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Average sea temperature
Oceanside, CA

Average sea temperature - Oceanside, CA

The best month for swimming (with the highest average sea temperature) is August (68°F).
The coldest months (with the lowest average sea temperature) are January and February (58.7°F).

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Average daylight / Average sunshine
Oceanside, CA

Average daylight / Average sunshine - Oceanside, CA

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.6h).

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Average sunshine days
Oceanside, CA

Average sunshine days - Oceanside, CA

The month with the most sunshine days is October (24.2 days).
The month with the least sunshine days is February (20 days).

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Average UV index
Oceanside, CA

Average UV index - Oceanside, CA

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

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Average visibility
Oceanside, CA

Average visibility - Oceanside, 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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