Oceanside, CA Weather by Month and Climate Averages

How much rain does Oceanside get?

Oceanside gets 10.3 in of precipitation in an average year, spread over about 33 days with measurable rain. That is fewer rainy days than 91% of the US.

February is the wettest month, with 2.4 in. August is the driest, with 0.0 in. January has the most rainy days, about 6.

The longest dry spell in the last five years lasted 139 days, to September 8, 2022.

See where Oceanside ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in California.

Oceanside weather by month

Oceanside weather in January

In January, Oceanside averages a high of 63°F and a low of 46°F. It gets 2.2 in of precipitation over about 6 rainy days. The sun is out about 52% of daylight hours. The January record high is 87°F (2005) and the record low is 29°F (1979). January is one of the most comfortable months to visit.

Oceanside weather in February

In February, Oceanside averages a high of 62°F and a low of 47°F. It gets 2.4 in of precipitation over about 6 rainy days. The sun is out about 58% of daylight hours. The February record high is 90°F (1977) and the record low is 28°F (1974).

Oceanside weather in March

In March, Oceanside averages a high of 62°F and a low of 50°F. It gets 1.4 in of precipitation over about 5 rainy days. The sun is out about 50% of daylight hours. The March record high is 90°F (1978) and the record low is 34°F (1971). March is one of the most comfortable months to visit.

Oceanside weather in April

In April, Oceanside averages a high of 64°F and a low of 52°F. It gets 0.8 in of precipitation over about 3 rainy days. The sun is out about 50% of daylight hours. The April record high is 99°F (2014) and the record low is 33°F (1975). April is one of the most comfortable months to visit.

Oceanside weather in May

In May, Oceanside averages a high of 65°F and a low of 57°F. It gets 0.3 in of precipitation over about 2 rainy days. The sun is out about 35% of daylight hours. The May record high is 95°F (2014) and the record low is 38°F (1974). May is one of the most comfortable months to visit.

Oceanside weather in June

In June, Oceanside averages a high of 67°F and a low of 60°F. It gets 0.1 in of precipitation over about 1 rainy days. The sun is out about 46% of daylight hours. The June record high is 90°F (1981) and the record low is 43°F (1975). June is one of the most comfortable months to visit.

Oceanside weather in July

In July, Oceanside averages a high of 70°F and a low of 64°F. It gets 0.0 in of precipitation over about 1 rainy days. The sun is out about 59% of daylight hours. The July record high is 90°F (1985) and the record low is 46°F (1975). July is one of the most comfortable months to visit.

Oceanside weather in August

In August, Oceanside averages a high of 72°F and a low of 65°F. It gets 0.0 in of precipitation over about 0 rainy days. The sun is out about 64% of daylight hours. The August record high is 94°F (1983) and the record low is 47°F (1975). August is one of the most comfortable months to visit.

Oceanside weather in September

In September, Oceanside averages a high of 72°F and a low of 63°F. It gets 0.2 in of precipitation over about 1 rainy days. The sun is out about 59% of daylight hours. The September record high is 104°F (1970) and the record low is 43°F (1973). September is one of the most comfortable months to visit.

Oceanside weather in October

In October, Oceanside averages a high of 70°F and a low of 57°F. It gets 0.6 in of precipitation over about 2 rainy days. The sun is out about 59% of daylight hours. The October record high is 100°F (1994) and the record low is 36°F (1971). October is one of the most comfortable months to visit.

Oceanside weather in November

In November, Oceanside averages a high of 67°F and a low of 50°F. It gets 0.8 in of precipitation over about 3 rainy days. The sun is out about 64% of daylight hours. The November record high is 100°F (1976) and the record low is 34°F (1977). November is one of the most comfortable months to visit.

Oceanside weather in December

In December, Oceanside averages a high of 64°F and a low of 46°F. It gets 1.6 in of precipitation over about 5 rainy days. The sun is out about 49% of daylight hours. The December record high is 89°F (1980) and the record low is 29°F (1990). December is one of the most comfortable months to visit.

Sunshine, humidity and wind in Oceanside

August is the sunniest month in Oceanside, with sunshine about 64% of daylight hours. May is the cloudiest, at 35%. Over the year the sun shines about 54% of daylight hours. Oceanside is sunnier than 71% of the US.

Humidity peaks in July at 81% and is lowest in November at 68%.

Oceanside has about 2 days a year above 90°F. Oceanside is cooler than 99% of the US.

See where Oceanside ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.

Oceanside weather records

The hottest temperature on record at the Oceanside station is 104°F, on September 27, 1970. The coldest is 28°F, on February 8, 1974.

The wettest day on record brought 4.2 in of rain, on March 15, 2023.

24 all-time records have been set at the station since 1970.

The best time to visit Oceanside

The most comfortable time to visit is typically January and March to December, when daytime highs sit near 67°F.

Winter (December–February) is mild, with average highs around 63°F and lows near 46°F.

Spring (March–May) is mild, with average highs around 64°F and lows near 53°F.

Summer (June–August) is warm, with average highs around 70°F and lows near 63°F. It can feel humid.

Autumn (September–November) is warm, with average highs around 69°F and lows near 57°F.

Oceanside climate questions

How much rain does Oceanside get?

Oceanside gets 10.3 in of precipitation in an average year, over about 33 rainy days.

What is the wettest month in Oceanside?

February is the wettest month in Oceanside, with 2.4 in. August is the driest, with 0.0 in.

How many rainy days does Oceanside have a year?

Oceanside has about 33 days with measurable rain in an average year. January has the most, about 6.

What is the hottest month in Oceanside?

August is the warmest month in Oceanside, with an average high of 72°F.

What is the coldest month in Oceanside?

January is the coldest month in Oceanside, with an average low of 46°F.

What is the record high temperature in Oceanside?

The record high at the Oceanside station is 104°F, set on September 27, 1970. The record low is 28°F, on February 8, 1974.

What is the sunniest month in Oceanside?

August is the sunniest month in Oceanside, with sunshine about 64% of daylight hours. May is the cloudiest.

What is the best time to visit Oceanside?

The most comfortable time to visit is typically January and March to December, when daytime highs sit near 67°F.