Oceanside, California, United States climate
Average temperatures, precipitation and all-time records for Oceanside, California, United States, with every day graded against ~46 years of local climate history (1980–2026). Its warmest month is August, averaging a high of 76°F, and its coldest is January, with an average low of 52°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
Oceanside average temperatures by month
Typical daily high and low, and average precipitation, for each month in Oceanside, California, United States, based on 1980–2026 records. The wettest month is January (0.10 in on an average day).
| Month | Avg high | Avg low | Avg precip |
|---|---|---|---|
| January | 63°F | 52°F | 0.10 in |
| February | 63°F | 53°F | 0.10 in |
| March | 64°F | 54°F | 0.10 in |
| April | 65°F | 56°F | 0.00 in |
| May | 66°F | 59°F | 0.00 in |
| June | 69°F | 61°F | 0.00 in |
| July | 74°F | 66°F | 0.00 in |
| August | 76°F | 67°F | 0.00 in |
| September | 75°F | 66°F | 0.00 in |
| October | 73°F | 63°F | 0.00 in |
| November | 68°F | 58°F | 0.00 in |
| December | 63°F | 53°F | 0.10 in |
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: 99°F on 1988-09-05
- Coldest day on record: 38°F on 1990-12-23
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 →