Climate and monthly weather forecast
Oceanside, CA

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

Weather in January

January, the same as December, is another refreshing winter month in Oceanside, California, with an average temperature varying between 50.7°F (10.4°C) and 64°F (17.8°C). With the onset of January, the average high-temperature registers at a still refreshing 64°F (17.8°C), subtly different from December's 62.4°F (16.9°C). Weather in January »

Weather in February

February, the last month of the winter in Oceanside, is another comfortable month, with an average temperature fluctuating between 63.1°F (17.3°C) and 49.6°F (9.8°C). February's arrival registers an average high-temperature of a still comfortable 63.1°F (17.3°C), closely aligning with the temperature of the previous month. Weather in February »

Weather in March

The first month of the spring, March, is still a comfortable month in Oceanside, California, with an average temperature ranging between min 51.3°F (10.7°C) and max 64.6°F (18.1°C). Transitioning into March, Oceanside records an average high-temperature of a still enjoyable 64.6°F (18.1°C), almost identical to February's 63.1°F (17.3°C). Weather in March »

Weather in April

April, like March, in Oceanside, California, is another comfortable spring month, with an average temperature fluctuating between 52.7°F (11.5°C) and 66.7°F (19.3°C). Welcoming April, Oceanside notes an average high-temperature of a still refreshing 66.7°F (19.3°C), nearly consistent with March's 64.6°F (18.1°C). Weather in April »

Weather in May

May, the last month of the spring in Oceanside, is an agreeable month, with an average temperature fluctuating between 55°F (12.8°C) and 68.2°F (20.1°C). The onset of May marks an average high-temperature of a pleasant 68.2°F (20.1°C), hardly differing from April's 66.7°F (19.3°C). Weather in May »

Weather in June

The first month of the summer, June, is still a pleasant month in Oceanside, California, with an average temperature varying between 72.1°F (22.3°C) and 57.7°F (14.3°C). Oceanside's weather in June indicates an average high-temperature of a still agreeable 72.1°F (22.3°C), nearly consistent with the 68.2°F (20.1°C) of May. Weather in June »

Weather in July

July in Oceanside, California, is a warm summer month, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 76.3°F (24.6°C). As Oceanside transitions into July, the average high-temperature stands at a warm 76.3°F (24.6°C), offering little variation from the preceding month. Weather in July »

Weather in August

August, the last month of the summer in Oceanside, is also a moderately hot month, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 64.2°F (17.9°C). Oceanside's temperatures tend to reach their peak averages in August, with a high of 78.6°F (25.9°C) and a low of 64.2°F (17.9°C). Weather in August »

Weather in September

September, the first month of the autumn in Oceanside, is still a warm month, with temperature in the range of an average high of 77.9°F (25.5°C) and an average low of 63.5°F (17.5°C). The onset of September notes an average high-temperature of a still warm 77.9°F (25.5°C), subtly shifted from August's 78.6°F (25.9°C). Weather in September »

Weather in October

October, the same as September, is a moderately hot autumn month in Oceanside, California, with an average temperature ranging between max 73.4°F (23°C) and min 60.3°F (15.7°C). At the start of October, Oceanside's average high-temperature reaches a still moderately hot 73.4°F (23°C), subtly different from the preceding month. Weather in October »

Weather in November

November, the last month of the autumn in Oceanside, is also an agreeable month, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 68.5°F (20.3°C). The average high-temperature during November registers at an agreeable 68.5°F (20.3°C), closely corresponding to the preceding month. Weather in November »

Weather in December

The first month of the winter, December, is still a comfortable month in Oceanside, California, with temperature in the range of an average low of 50.4°F (10.2°C) and an average high of 62.4°F (16.9°C). With average temperatures fluctuating between a high of 62.4°F (16.9°C) and a low of 50.4°F (10.2°C), December stands out as the coldest month. Weather in December »

Frequently asked questions

How many days does it rain in Oceanside?

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

What months are 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.

When is the lowest UV index in Oceanside?

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

When is Daylight Saving Time (DST) in Oceanside?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Oceanside, 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 Oceanside?

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

What is the driest month in Oceanside?

The month with the least rainfall in Oceanside, California, is June, when the rain falls for 2.7 days and typically collects 0.12" (3mm) of precipitation.

When are the longest days in Oceanside?

The month with the longest days in Oceanside, California, is June, with an average of 14h and 18min of daylight.

What months are the ocean warmest in Oceanside?

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

What is the month with the most sunshine in Oceanside?

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

When is the highest UV index in Oceanside?

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

What is the hottest time of year in Oceanside?

August tends to be the warmest month, with temperatures averaging a daily high of 78.6°F (25.9°C) and a low of 64.2°F (17.9°C).

What is the least humid month in Oceanside?

With an average relative humidity of 60%, November is the least humid month.

What month is the coldest in Oceanside?

The month of December sees the average lowest temperatures in Oceanside, reaching 62.4°F (16.9°C) at the peak and 50.4°F (10.2°C) at the low.

What is the rainiest month in Oceanside?

The month with the most rainfall in Oceanside 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 and 0min of daylight, December has the shortest days of the year.

What is the month with the least sunshine in Oceanside?

With an average of 6.6h of sunshine, December has the least sunshine of the year.

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).

Average pressure
Oceanside, CA

Average pressure - Oceanside, CA

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

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).

Average humidity
Oceanside, CA

Average humidity - Oceanside, CA

The month with the highest relative humidity is June (73%).
The month with the lowest relative humidity is November (60%).

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").

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).

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).

Average daylight / Average sunshine
Oceanside, CA

Average daylight / Average sunshine - Oceanside, CA

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

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).

Average UV index
Oceanside, CA

Average UV index - Oceanside, 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
Oceanside, CA

Average visibility - Oceanside, 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).

Oceanside, California, USA

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