Seaside Beach Water Temperature
Sea-surface temperature at Seaside Beach, Oregon · times in PDT
Updated 4:03 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 |
|---|---|---|---|
| Fri, Aug 28 | 63° / 57° | 6 | 3% |
| Sat, Aug 29 | 63° / 56° | 6 | 28% |
| Sun, Aug 30 | 67° / 53° | 6 | 6% |
| Mon, Aug 31 | 68° / 53° | 5 | 10% |
| Tue, Sep 1 | 69° / 52° | 6 | 26% |
| Wed, Sep 2 | 60° / 51° | 2 | 77% |
| Thu, Sep 3 | 64° / 51° | 3 | 56% |
Sea-surface temperature and wave data from the Open-Meteo marine model; weather from Open-Meteo.
Is Seaside Beach warm enough to swim?
At 61°F, the water at Seaside Beach is chilly — wetsuit recommended. 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° above the August average of 58°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 61°F. That is 3° above the August average of 58°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.