Surf Forecasts:
Viana do Castelo surf forecast from 24 Jul 2026:
- Best quality surf: Monday 27 Jul, 7AM (local time) - 2.5ft (0.7m), 11s period, NW swell with offshore winds.
- Most powerful swell: Saturday 25 Jul, 10PM (local time) - 6.5ft (2.0m), 7s period, NNW swell with 342 kJ wave energy.
- Next surfable swell (1★+): Saturday 25 Jul, 1AM (local time) - 2.5ft (0.8m), 6s period with W 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 25) at 1AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.5m and 7s. 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 2.0m 7s and forecast to arrive on Saturday (Jul 25) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Sunday (Jul 26) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sat 25th Jul) | 2.5ft (0.8m) 6s |
| Best Surf | 7AM (Mon 27th Jul) | 2.5ft (0.7m) 11s |
| Most Powerful | 10PM (Sat 25th Jul) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Viana do Castelo over the next 16 days.
The Lowdown
Alright, Rusty here. Let's be honest, looking down the whole 16-day run for Viana do Castelo, we've got a bit of a wait on our hands. The first week is mostly a write-off with weak, short-period windswell and messy winds. Don't even bother paddling out until next week.
The stand-out window, the one to really circle on your calendar, is Monday, August 4th. That morning is looking absolutely dreamy. We've got a solid 6ft groundswell out of the NW with a combined energy of 505 (moderate). The water is a touch warmer than normal for this time of year at about 69°F. But the real kicker? Glassy conditions. Dead calm. It's going to be clean as a whistle and have some proper push. Just be aware, at that size, it's probably a bit much for the beginners, more of a session for the lads who know what they're doing.
Before that, the best we get is Monday, July 27th. It's not a world-beater, but it's the best of the early run. A 4ft swell from the NNW with moderate energy (360), and the morning is glassy. The wind stays light, so you'll get some clean, rideable waves. It'll be a fun session, but nothing compared to the stuff that's brewing for August.
After that big day on the 4th, the swell holds a bit into Wednesday, August 5th morning with 6ft from the NNW and another glassy morning session. The energy is still strong (414), so it’s a solid second option.
A quick note for the Tuesday, August 4th afternoon: the swell jumps to 8ft and the energy is pumping (681). The forecast says it might be too big for this river break, so unless you're a gun and the tide is perfect, you might want to sit that one out. The morning is definitely the call.
The rest of the second week is a bit of a letdown again, with onshore winds and dropping swell. So really, the whole nine days of this outlook boils down to that Monday, August 4th. Get it locked in.
Rusty, signing off.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri afternoon. Warm (max 29°C on Mon morning, min 15°C on Sat night). Winds decreasing (fresh winds from the NNW on Sat afternoon, calm by Mon morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 28°C on Mon afternoon, min 16°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Fri 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | ||||||||||||||
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) | W 8 | W 6 | WNW 6 | W 8 | NNW 6 | WNW 9 | WNW 9 | NW 12 | NNW 10 | NNW 9 | NW 10 | NW 10 | NW 9 | NW 9 | NW 8 | NW 8 | WNW 10 | WNW 10 | NW 8 | WNW 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 14 | 40 | 73 | 5 | 232 | 16 | 27 | 68 | 320 | 295 | 292 | 208 | 166 | 112 | 102 | 46 | 54 | 52 | 70 | 25 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | off | glassy | cross | cross | cross-on | cross-on | cross-off | cross-off | cross | glassy | cross-on | cross | on |
High Tide | 00:40AM2.49m | 1:11PM2.69m | 1:41AM2.56m | 2:01PM2.82m | 2:28AM2.68m | 2:42PM2.96m | 3:07AM2.80m | 3:19PM3.10m | 3:41AM2.92m | 3:52PM3.23m | 4:14AM3.02m | 4:25PM3.32m | ||||||||
Low Tide | 6:32PM1.46m | 6:46AM1.41m | 7:30PM1.35m | 7:38AM1.32m | 8:17PM1.21m | 8:21AM1.21m | 8:56PM1.06m | 8:59AM1.08m | 9:31PM0.93m | 9:34AM0.95m | 10:03PM0.81m | 10:07AM0.85m | 10:35PM0.72m | |||||||
 |  |  | |  | | | | | | | | | | | | |  |  |  | |
 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — |
 | — | 9:00 | — | — | 9:00 | — | — | 9:00 | — | 8:59 | — | — | 8:58 | — | — | 8:57 | — | — | 8:55 | — |
mm | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 19 | 22 | 21 | 18 | 23 | 22 | 22 | 29 | 28 | 24 | 24 | 23 | 17 | 22 | 22 | 19 | 25 | 26 | 21 |
Feels °C | 20 | 21 | 19 | 17 | 15 | 19 | 17 | 20 | 28 | 27 | 24 | 24 | 24 | 17 | 21 | 21 | 18 | 24 | 25 | 20 |
Swell 1 Height (m) Direction Period (s) | NNW 7 | W 6 | WNW 6 | W 8 | WNW 10 | WNW 9 | WNW 9 | NW 12 | NNW 10 | NNW 9 | NW 10 | NW 10 | NW 9 | NW 9 | NW 8 | NW 8 | WNW 10 | WNW 10 | WNW 10 | NW 5 |
| kJ | 9 | 40 | 73 | 5 | 9 | 16 | 27 | 68 | 320 | 295 | 292 | 208 | 166 | 112 | 102 | 18 | 54 | 52 | 52 | 19 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 7 | W 8 | NW 10 | — | NW 13 | NW 13 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 9 | W 8 | WNW 11 | WNW 11 | WNW 10 | N 10 | NW 8 | N 9 | WNW 9 |
| kJ | 12 | 26 | 5 | 4 | — | 7 | 7 | 25 | 26 | 14 | 14 | 15 | 5 | 23 | 12 | 20 | 2 | 24 | 2 | 25 |
Swell 3 Height (m) Direction Period (s) | SW 11 | NNW 6 | W 11 | S 12 | — | — | — | — | WNW 8 | — | S 14 | — | — | — | — | N 10 | — | N 9 | — | NW 8 |
| kJ | 5 | 8 | 2 | 3 | — | — | — | — | 14 | — | 4 | — | — | — | — | 2 | — | 2 | — | 10 |
Wind waves Height (m) Direction Period (s) | WSW 4 | — | — | NW 6 | NNW 6 | NNW 6 | NNW 5 | NNW 6 | — | — | — | — | — | — | — | NW 8 | NNW 8 | NW 4 | NW 8 | — |
| kJ | 14 | — | — | 138 | 232 | 60 | 69 | 119 | — | — | — | — | — | — | — | 46 | 46 | 2 | 70 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 271 | 0 | 0 | 146 | 151 | 2 | 130 | 0 | 0 | 100 | 2 | 56 | 111 | 0 | 0 | 130 | 0 | 151 | 180 | 104 |
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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