
Surf Forecasts:
Viana do Castelo surf forecast from 28 Sep 2026:
- Best quality surf: Tuesday 29 Sep, 10PM (local time) - 10ft (3.0m), 9s period, SW swell with onshore winds.
- Most powerful swell: Thursday 1 Oct, 4AM (local time) - 10ft (3.0m), 12s period, WNW swell with 2,685 kJ wave energy.
- Next surfable swell (1★+): Tuesday 29 Sep, 10PM (local time) - 10ft (3.0m), 9s period with SW swell.
Best Forecast Surf Conditions for Viana do Castelo this week:
The surf forecast for Viana do Castelo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 29) at 10PM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 0.6m and 12s. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Viana do Castelo in the next 16 days are 3.0m 12s and forecast to arrive on Thursday (Oct 01) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 29th Sep) | 10ft (3.0m) 9s |
| Best Surf | 10PM (Tue 29th Sep) | 10ft (3.0m) 9s |
| Most Powerful | 4AM (Thu 1st Oct) | 10ft (3.0m) 12s |
Table - best surf conditions forecast for Viana do Castelo over the next 16 days.
Short Range ForecastHeavy rain (total 21mm), heaviest during Tue night. Warm (max 22°C on Tue morning, min 14°C on Wed night). Winds decreasing (strong winds from the S on Tue morning, light winds from the SSW by Tue night). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sat afternoon. Warm (max 25°C on Sat morning, min 15°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 28 | Tuesday 29 | Wednesday 30 | Thursday 1 | Friday 2 | Saturday 3 | Sunday 4 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | NW 11 | NW 12 | NW 11 | SSW 7 | SSW 8 | WSW 9 | WSW 9 | W 10 | WNW 12 | WNW 12 | WNW 12 | NW 12 | NW 13 | NW 13 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 |
Wave Graph | |||||||||||||||||||||
713 | 836 | 650 | 303 | 866 | 1178 | 882 | 1618 | 2461 | 2173 | 2299 | 2418 | 1749 | 1374 | 1031 | 663 | 534 | 357 | 338 | 304 | 258 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | on | cross-on | cross-off | cross-off | cross-off | off | glassy | cross-off | glassy | glassy | cross-off | cross-off | cross-off | cross | cross-off |
High Tide | 4:42PM3.56m | 5:02AM3.55m | 5:20PM3.47m | 5:42AM3.47m | 6:03PM3.29m | 6:26AM3.31m | 6:52PM3.06m | 7:19AM3.10m | 7:53PM2.80m | 8:26AM2.88m | 9:16PM2.61m | 9:56AM2.76m | 10:59PM2.59m | ||||||||
Low Tide | 10:30AM0.42m | 10:48PM0.40m | 11:08AM0.46m | 11:26PM0.50m | 11:50AM0.59m | 00:08AM0.68m | 12:37PM0.79m | 00:55AM0.92m | 1:34PM1.02m | 1:56AM1.18m | 2:52PM1.23m | 3:23AM1.38m | 4:35PM1.28m | ||||||||
7:28 | — | — | 7:28 | — | — | 7:30 | — | — | 7:31 | — | — | 7:31 | — | — | 7:33 | — | — | 7:33 | — | — | |
— | 7:22 | — | — | 7:21 | — | — | 7:19 | — | — | 7:17 | — | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | |
mm | — | — | — | — | 9 | 12 | — | — | — | — | — | — | — | — | — | — | 2 | 3 | 1 | — | — |
Temp °C | 21 | 21 | 21 | 22 | 21 | 17 | 20 | 19 | 17 | 19 | 21 | 19 | 22 | 22 | 23 | 25 | 24 | 23 | 25 | 25 | 23 |
Feels °C | 20 | 21 | 16 | 16 | 15 | 17 | 18 | 17 | 16 | 16 | 16 | 16 | 21 | 20 | 22 | 25 | 23 | 23 | 25 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 12 | NW 11 | NW 11 | NW 11 | WSW 9 | WSW 9 | W 10 | WNW 12 | WNW 12 | WNW 12 | NW 12 | NW 13 | NW 13 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 |
713 | 836 | 650 | 303 | 137 | 1178 | 882 | 1618 | 2461 | 2173 | 2299 | 2418 | 1749 | 1374 | 1031 | 663 | 534 | 357 | 338 | 304 | 258 | |
Swell 2 Height (m) Direction Period (s) | S 12 | SW 11 | SW 14 | SSW 13 | — | NW 12 | NW 11 | — | — | SW 9 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | NW 5 | SW 12 |
3 | 5 | 7 | 17 | — | 114 | 268 | — | — | 3 | 11 | 10 | 10 | 9 | 8 | 8 | 7 | 7 | 7 | 7 | 6 | |
Swell 3 Height (m) Direction Period (s) | — | — | S 11 | — | — | WNW 12 | — | — | — | — | — | — | — | — | — | SW 14 | SW 14 | SW 13 | — | SW 13 | — |
— | — | 2 | — | — | 93 | — | — | — | — | — | — | — | — | — | 8 | 7 | 7 | — | 7 | — | |
Wind waves Height (m) Direction Period (s) | — | SW 5 | S 3 | SSW 7 | SSW 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | 1 | 3 | 273 | 866 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 106 | 2 | 247 | 182 | 10 | 265 | 100 | 2 | 2 | 100 | 2 | 2 | 100 | 0 | 0 | 0 | 0 | 0 | 100 | 0 |
Best forecast wave conditions in Douro and Minho | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Viana do Castelo Surf forecast
The above surf forecast table for Viana do Castelo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Viana do Castelo can be found by selecting the local surf guide option on the grey menu. Our Viana do Castelo surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Viana do Castelo) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Viana do Castelo may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Viana do Castelo is 3 km (2 miles) from Viana do Castelo. If you plan a holiday in Douro and Minho, look for hotels and other accommodation in Viana do Castelo. Viana do Castelo has rooms for a wide range of budgets as well as car hire and transport links.










