Seaside Beach Water Temperature
Sea-surface temperature at Seaside Beach, Oregon · times in PDT
Updated 1:00 AM PDT
How it compares today
Water temperature through the year
Monthly normals computed from 2023–2025 daily sea-surface temperature history.
Nearby water right now
7-day outlook
| Day | Air high / low | Max UV | Rain |
|---|---|---|---|
| Tue, Oct 13 | 58° / 47° | 1 | 6% |
| Wed, Oct 14 | 61° / 51° | 2 | 13% |
| Thu, Oct 15 | 78° / 52° | 4 | 0% |
| Fri, Oct 16 | 69° / 52° | 3 | 3% |
| Sat, Oct 17 | 61° / 47° | 4 | 42% |
| Sun, Oct 18 | 61° / 45° | 2 | 35% |
| Mon, Oct 19 | 58° / 48° | 3 | 62% |
Sea-surface temperature and wave data from the Open-Meteo marine model; weather from Open-Meteo.
Is Seaside Beach warm enough to swim?
At 53°F, the water at Seaside Beach is cold — not recommended for swimming. Most swimmers are comfortable without a wetsuit above 72°F; below 62°F, cold-water shock becomes a real risk for unprotected swimmers.
That is 3° below the October average of 56°F here.
The water here never averages above 70°F — even in August, the warmest month, it sits around 58°F. Most people wear a wetsuit.
Frequently asked questions
How warm is the water at Seaside Beach right now?
The sea-surface temperature is about 53°F. That is 3° below the October average of 56°F here.
When is the water warm enough to swim at Seaside Beach?
The water here never averages above 70°F — even in August, the warmest month, it sits around 58°F. Most people wear a wetsuit.
What is the warmest the water gets at Seaside Beach?
Around 58°F in August, based on 2023–2025 records. The coolest month is January at roughly 49°F.