Swimming at Oceanside Beach today
Oceanside, California
Updated 4:03 AM PDT
What decides a swimming score
Water quality
Where you swim changes the answer here — we score this beach 30 at its worst monitored point and 84 at its best.
Cleanest today
- Tyson St.A+
- Surfrider WayA+
- Forster St.A+
- Cassidy St.A+
1 more monitored point along this beach grade A or better.
Avoid today
- Buena Vista Lagoon OutletF
These are storm drains and piers, which are sampled precisely because they are the worst spots on a beach.
All 11 monitoring points
| Monitoring point | Distance | Grade |
|---|---|---|
| Buena Vista Lagoon Outlet storm drain / pier | 4 km | F |
| 500' N. of Loma Alta Creek Outlet storm drain / pier | 2.2 km | A+ |
| Buccaneer Beach (at Loma Alta Creek) storm drain / pier | 2.2 km | A+ |
| Harbor Beach (projection of Harbor Dr.) storm drain / pier | 1.7 km | A+ |
| San Luis Rey River outlet storm drain / pier | 1.4 km | A+ |
| St. Malo Beach (downcoast from St. Malo Rd.) | 3.8 km | A+ |
| Cassidy St. | 2.9 km | A+ |
| Forster St. | 1.6 km | A+ |
| Pier View Way storm drain / pier | 0.6 km | A+ |
| Surfrider Way | 0.7 km | A+ |
| Tyson St. | 0.7 km | A+ |
Dry-weather bacterial grades from the Heal the Bay Beach Report Card, updated 2026-08-21. Grades reflect the most recent agency sampling and can change after rain.
Before you swim
Surf is running 3.2 ft today, which makes shorebreak and currents stronger than usual.
Swim near a staffed lifeguard tower, and check the National Weather Service surf-zone forecast for the official rip-current outlook — we report conditions, we don't forecast rip currents.
Oceanside Beach is also scored for
About Oceanside Beach
Oceanside Beach sits on the California coast, where the water runs from about 59°F in January to 72°F in August.
The water averages above 70°F in July, August and September — 3 months of the year — peaking around 72°F in August and dropping to about 59°F in January.
Today it is 77°F. That is 5° above the August average of 72°F here.
Tide predictions come from NOAA station La Jolla (Scripps Institution Wharf) about 38.3 km away on the open coast.
Frequently asked questions
Is Oceanside Beach good for swimming today?
Great for swimming — we score it 84 out of 100 today. The limiting factor is surf calmness at 3.2 ft.
What makes a good swimming day?
We weight water temperature (40%), surf calmness (25%), uv exposure (15%) and combine them into one score. Conditions we cannot read are left out rather than guessed.
When is the best time of year to swim at Oceanside Beach?
The water averages above 70°F in July, August and September — 3 months of the year — peaking around 72°F in August and dropping to about 59°F in January.