Oceanside
California, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Oceanside, CA

An evening panoramic view of people on the clean beach of Oceanside City in California, with buildings and palm trees with sun rays and a cloudy sky
An evening panoramic view of people on the clean beach of Oceanside City in California, with buildings and palm trees with sun rays and a cloudy sky
January, the same as December, is another comfortable winter month in Oceanside, California, with average temperature ranging between max 64°F (17.8°C) and min 45°F (7.2°C). January, February and December, with an average high-temperature of 64°F (17.8°C), are the coldest months. Weather in January »
February, the last month of the winter, in Oceanside, is also an enjoyable month, with average temperature varying between 64°F (17.8°C) and 46.9°F (8.3°C). January, February and December, with an average high-temperature of 64°F (17.8°C), are the coldest months. Weather in February »

March, the first month of the spring, in Oceanside, is also an enjoyable month, with temperature in the range of an average low of 51.1°F (10.6°C) and an average high of 64.9°F (18.3°C). In Oceanside, the average high-temperature is practically the same as in February - a still enjoyable 64.9°F (18.3°C). Weather in March »

April, like March, in Oceanside, California, is another comfortable spring month, with average temperature varying between 55.9°F (13.3°C) and 66°F (18.9°C). In Oceanside, California, the average high-temperature is essentially the same as in March - a still enjoyable 66°F (18.9°C). Weather in April »

The last month of the spring, May, is an agreeable month in Oceanside, California, with average temperature varying between 60.1°F (15.6°C) and 69.1°F (20.6°C). In Oceanside, the average high-temperature is almost the same as in April - a pleasant 69.1°F (20.6°C). Weather in May »

June, the first month of the summer, in Oceanside, is still a pleasant month, with average temperature fluctuating between 72°F (22.2°C) and 63°F (17.2°C). In June, the average high-temperature is almost the same as in May - a still pleasant 72°F (22.2°C). Weather in June »

July is a moderately hot summer month in Oceanside, California, with average temperature varying between 64°F (17.8°C) and 73.9°F (23.3°C). July is the warmest month, with an average high-temperature of 73.9°F (23.3°C) and an average low-temperature of 64°F (17.8°C). Weather in July »

The last month of the summer, August, is also an agreeable month in Oceanside, California, with temperature in the range of an average high of 73°F (22.8°C) and an average low of 61°F (16.1°C). In August, the average high-temperature is almost the same as in July - a pleasant 73°F (22.8°C). Weather in August »

The first month of the autumn, September, is still a pleasant month in Oceanside, California, with average temperature ranging between max 71.1°F (21.7°C) and min 55.9°F (13.3°C). In September, the average high-temperature is practically the same as in August - a still agreeable 71.1°F (21.7°C). Weather in September »

October, the same as September, in Oceanside, California, is another pleasant autumn month, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 68°F (20°C). In October, the average high-temperature is relatively the same as in September - a still pleasant 68°F (20°C). Weather in October »

The last month of the autumn, November, is also an enjoyable month in Oceanside, California, with average temperature ranging between max 64.9°F (18.3°C) and min 48°F (8.9°C). In Oceanside, the average high-temperature is almost the same as in October - an enjoyable 64.9°F (18.3°C). Weather in November »

The first month of the winter, December, is also an enjoyable month in Oceanside, California, with average temperature fluctuating between 45°F (7.2°C) and 64°F (17.8°C). January, February and December, with an average high-temperature of 64°F (17.8°C), are the coldest months. Weather in December »

What are the coldest months in Oceanside?

The coldest months in Oceanside, California, are January, February and December, with an average high-temperature of 64°F (17.8°C).

How much does it rain in Oceanside?

During the entire year, Oceanside aggregates up to 11.1" (282.7mm) of precipitation.

What is the wettest month in Oceanside?

January is the month with the most rainfall in Oceanside, with 2.4" (61.5mm) of accumulated precipitation.

When is the ocean coldest in Oceanside?

January and February, with an average ocean temperature of 58.6°F (14.8°C), are months with the coldest seawater in Oceanside. Swimming in 58.6°F (14.8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

When are the longest days in Oceanside?

The month with the longest days is June, with an average of 14.3h of daylight.

What is the warmest month in Oceanside?

The warmest month in Oceanside is July, with an average high-temperature of 73.9°F (23.3°C) and an average low-temperature of 64°F (17.8°C).

What is the driest month in Oceanside?

July is the month with the least rainfall, with 0" (0.5mm) of accumulated precipitation.

When is the ocean warmest in Oceanside?

July and August, with an average ocean temperature of 68°F (20°C), are months with the warmest seawater in Oceanside, California. For most, swimming in 68°F (20°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 month with the shortest days in Oceanside?

December has the shortest days of the year, with an average of 10h of daylight.
Average temperature - Oceanside, CA
Average rainfall - Oceanside, CA
Average sea temperature - Oceanside, CA

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

Average daylight - Oceanside, CA