Surf Forecasts:
Viana do Castelo surf forecast from 11 Jul 2026:
- Best quality surf: Saturday 11 Jul, 7PM (local time) - 2ft (0.6m), 10s period, NW swell with glassy winds.
- Most powerful swell: Sunday 12 Jul, 1AM (local time) - 2.5ft (0.7m), 9s period, NW swell with 88 kJ wave energy.
- Next surfable swell (1★+): Saturday 11 Jul, 7PM (local time) - 2ft (0.6m), 10s period with NW 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 Saturday (Jul 11) at 7PM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.6m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Viana do Castelo in the next 16 days are 0.7m 9s and forecast to arrive on Sunday (Jul 12) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Friday (Jul 17) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Sat 11th Jul) | 2ft (0.6m) 10s |
| Best Surf | 7PM (Sat 11th Jul) | 2ft (0.6m) 10s |
| Most Powerful | 1AM (Sun 12th Jul) | 2.5ft (0.7m) 9s |
Table - best surf conditions forecast for Viana do Castelo over the next 16 days.
Hey mates, Rusty here. Let’s have a look at what’s cooking for the next couple of weeks.
Alright, so straight off the bat, the forecast for Viana do Castelo is a real slow starter. For the first week and a half, honestly, it’s a bit of a bummer. We’ve got a long stretch from now, starting Saturday the 11th of July, all the way through to about the 20th, where the surf is just not doing us any favors. Small, weak, messy cross-onshore junk for most of that time. You’d be spending more time fighting chop than actually riding waves. The combined energy is limp, sitting under 100 or barely scraping into triple digits for most of those days. It’s a tough stretch for any paddle surfing.
The real light at the end of the tunnel is the final weekend. On the morning of Sunday the 26th of July, that’s where we finally get something to get excited about. Viana do Castelo is a river mouth, and it’s set to fire up with a clean-looking NW groundswell. We’re talking solid surf coming in at about 6 ft from the NW, with a nice long period of 10 seconds, giving the waves some real grunt. The combined energy is pumping hard at 627. More importantly, we’re getting light offshore winds from the NNW, which will keep those waves clean with next to no bump. This is the standout session of the whole outlook. The water temp is sitting at 62°, which is a bit colder than what’s typical for this time of year, so don’t forget a good suit. Given the swell size, it’s going to be a ripper for intermediate and experienced surfers. Just keep in mind the crowds can be an issue here, so you’ll want to be early.
The afternoon of that same Sunday gets a bit windier and the quality drops off, but the morning window is the one to circle on your calendar.
So to sum it up: the first week and a half is a right-off for surf. Don't bother. But if you can wait, that Sunday morning on the 26th is where it's at. Keep your fingers crossed for that one.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sat morning, min 16°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Tue afternoon, min 16°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
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 10 | NW 9 | NW 9 | NW 8 | NNW 8 | SSW 5 | SSW 5 | WSW 6 | WNW 11 | WNW 10 | W 10 | W 9 | W 9 | W 6 | W 9 | W 9 | WNW 8 | W 8 | NW 4 | S 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 92 | 80 | 88 | 81 | 71 | 45 | 45 | 26 | 46 | 40 | 33 | 46 | 41 | 39 | 22 | 40 | 25 | 24 | 21 | 36 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | glassy | cross-on | on | cross | cross-on | on | glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:05PM3.14m | 1:37AM3.02m | 2:07PM3.31m | 2:38AM3.15m | 3:03PM3.47m | 3:34AM3.27m | 3:54PM3.58m | 4:24AM3.34m | 4:42PM3.63m | 5:11AM3.35m | 5:27PM3.61m | 5:57AM3.30m | 6:11PM3.51m | ||||||||
Low Tide | 7:25PM0.91m | 7:45AM0.82m | 8:25PM0.73m | 8:42AM0.70m | 9:19PM0.57m | 9:33AM0.61m | 10:09PM0.46m | 10:22AM0.57m | 10:56PM0.42m | 11:08AM0.59m | 11:41PM0.46m | 11:52AM0.67m | 00:25AM0.56m | ||||||||
 |  |  |  | |  | | |  | | | | | | | | | | | | | |
 | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — |
 | — | — | 9:09 | — | — | 9:09 | — | — | 9:08 | — | — | 9:08 | — | — | 9:07 | — | — | 9:07 | — | — | 9:07 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 18 | 21 | 21 | 18 | 20 | 21 | 18 | 21 | 22 | 19 | 21 | 21 | 19 | 22 | 21 | 19 | 22 | 20 | 17 |
Feels °C | 22 | 20 | 17 | 18 | 18 | 18 | 18 | 20 | 19 | 20 | 21 | 20 | 20 | 21 | 21 | 21 | 20 | 18 | 19 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 10 | NW 9 | NW 9 | NW 8 | NNW 8 | NW 8 | W 6 | WSW 6 | W 6 | WNW 10 | WSW 5 | WSW 5 | WSW 5 | W 6 | W 6 | W 5 | W 5 | W 8 | W 8 | S 15 |
| kJ | 92 | 80 | 88 | 81 | 71 | 45 | 18 | 24 | 46 | 24 | 33 | 17 | 17 | 24 | 22 | 15 | 15 | 14 | 21 | 20 | 4 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | W 9 | W 8 | W 8 | W 7 | WSW 5 | WNW 8 | NW 8 | WNW 12 | WNW 11 | WNW 7 | W 10 | W 9 | W 9 | W 8 | W 9 | W 9 | WNW 8 | W 5 | SW 12 | — |
| kJ | 44 | 57 | 34 | 20 | 15 | 15 | 6 | 17 | 28 | 40 | 10 | 46 | 41 | 39 | 21 | 40 | 25 | 24 | 8 | 5 | — |
Swell 3 Height (m) Direction Period (s) | NW 4 | NW 4 | NW 5 | NNW 4 | SW 19 | W 8 | N 8 | WNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NW 6 | NW 6 | W 10 | SW 13 | SW 13 | S 11 | S 11 | — | — |
| kJ | 5 | 4 | 6 | 2 | 15 | 1 | 5 | 6 | 6 | 5 | 5 | 4 | 2 | 2 | 17 | 6 | 7 | 2 | 2 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | S 3 | S 4 | SSW 4 | SSE 4 | SSW 5 | SSW 5 | — | — | WSW 6 | — | — | — | — | — | — | — | NNW 3 | NW 4 | NNW 6 |
| kJ | — | — | 2 | 14 | 24 | 5 | 45 | 26 | — | — | 17 | — | — | — | — | — | — | — | 3 | 36 | 154 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 104 | 18 | 114 | 277 | 10 | 87 | 179 | 0 | 104 | 104 | 10 | 114 | 106 | 0 | 19 | 1135 | 0 | 151 | 1239 | 19 |
Best forecast wave conditions in Douro and Minho | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
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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.
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