Playa de Rio Sieira / As Furnas surf forecast from 17 Oct 2026:
- Best quality surf: Wednesday 21 Oct, 8AM (local time) - 10ft (3.0m), 11s period, WNW swell with onshore winds.
- Most powerful swell: Friday 23 Oct, 2AM (local time) - 11ft (3.5m), 12s period, WNW swell with 3,315 kJ wave energy.
- Next surfable swell (1★+): Tuesday 20 Oct, 11AM (local time) - 5ft (1.6m), 13s period with WNW swell.
Best Forecast Surf Conditions for Playa de Rio Sieira / As Furnas this week:
The surf forecast for Playa de Rio Sieira / As Furnas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Oct 20) at 11AM. The primary swell is predicted to be 1.6m and 13s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Playa de Rio Sieira / As Furnas in the next 16 days are 3.5m 12s and forecast to arrive on Friday (Oct 23) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Thursday (Oct 22) at 11PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Tue 20th Oct) | 5ft (1.6m) 13s |
| Best Surf | 8AM (Wed 21st Oct) | 10ft (3.0m) 11s |
| Most Powerful | 2AM (Fri 23rd Oct) | 11ft (3.5m) 12s |
Table - best surf conditions forecast for Playa de Rio Sieira / As Furnas over the next 16 days.
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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