Oceanside, California, United States climate

Average temperatures, precipitation and all-time records for Oceanside, California, United States, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is August, averaging a high of 76°F, and its coldest is February, with an average low of 54°F.

Oceanside is a beach city in the North County area of San Diego County, California, United States. The city had a population of 174,068 at the 2020 United States census, making it the most populous city in the North County region of San Diego. via Wikipedia

How today compares

Latest recorded day: 2026-07-21. Each reading placed on Oceanside, California, United States's own ±7-day seasonal distribution.

High 80°F High · 89th pct

Low 66°F Above Normal · 69th pct

Feels-like 86°F Very High · 97th pct

Humidity 15.6 g/m³ Very High · 94th pct

Wind 13 mph Very High · 93rd pct

Precip 0.00 in Dry

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Oceanside average temperatures by month

Typical daily high and low, and average precipitation, for each month in Oceanside, California, United States, based on 1981–2026 records. The wettest month is January (0.10 in on an average day).

Month	Avg high	Avg low	Avg precip
January	63°F	55°F	0.10 in
February	63°F	54°F	0.10 in
March	64°F	55°F	0.10 in
April	65°F	56°F	0.00 in
May	67°F	58°F	0.00 in
June	70°F	60°F	0.00 in
July	74°F	65°F	0.00 in
August	76°F	66°F	0.00 in
September	76°F	66°F	0.00 in
October	73°F	63°F	0.00 in
November	68°F	59°F	0.00 in
December	64°F	55°F	0.10 in

Jan 50°–70°

Feb 50°–70°

Mar 51°–71°

Apr 53°–73°

May 55°–74°

Jun 57°–76°

Jul 61°–80°

Aug 62°–82°

Sep 61°–83°

Oct 60°–80°

Nov 55°–75°

Dec 51°–70°

Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.

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Record extremes

Hottest day on record: 96°F on 1988-09-03
Coldest day on record: 41°F on 1990-12-23

All Oceanside weather records →

Percentiles compare each day to Oceanside, California, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →