Surf Forecasts:
Viana do Castelo surf forecast from 23 Jul 2026:
- Best quality surf: Monday 27 Jul, 7AM (local time) - 2.5ft (0.7m), 10s period, NW swell with offshore winds.
- Most powerful swell: Saturday 25 Jul, 10PM (local time) - 7ft (2.1m), 7s period, NNW swell with 456 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 10PM (local time) - 2.5ft (0.7m), 5s 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 Friday (Jul 24) at 10PM. The primary swell is predicted to be 0.7m and 5s period with a secondary swell of 0.4m 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 2.1m 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 1.4m 6s period and expected on Wednesday (Jul 29) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Fri 24th Jul) | 2.5ft (0.7m) 5s |
| Best Surf | 7AM (Mon 27th Jul) | 2.5ft (0.7m) 10s |
| Most Powerful | 10PM (Sat 25th Jul) | 7ft (2.1m) 7s |
Table - best surf conditions forecast for Viana do Castelo over the next 16 days.
The Lowdown
Alright, grab your board. I'm Rusty, and I've scoured the charts for the next 16 days.
First off, let's be real. The opening stretch is a total write-off. We're looking at tiny, wind-chopped dribble for the first few days. Nothing to get excited about. You'll be staring at flat water from Thursday the 23rd to Friday the 25th. It's a grim start.
Then, on Saturday the 25th, the morning throws us a bone. It's not big, but we get a period of glassy conditions. The swell ticks up to 4ft from the WNW with a period of 6 seconds. The combined swell energy is moderate at 139. It's small, it's weak, but it's the first clean window we've seen. It won't be amazing, but it's a chance to get wet without the wind messing it up.
The real standout, the one you've been waiting for, is Monday the 27th. That morning is the pick of the entire forecast. The wind goes glassy, dead calm, and the swell is a clean 4ft from the NNW, with a period of 10 seconds. The energy is strong at 311. The sets will have some push, and the conditions will be absolutely perfect. This is your day. Get out there early. The water temperature is sitting at 68°, which is a touch warmer than normal for this time of year, so it's comfortable.
Monday afternoon gets a bit lumpy with a light cross-shore, but the morning is pure gold.
The second week starts to look a bit more promising again. Sunday the 2nd of August has a solid morning with clean conditions and 4ft swell from the NW, with a strong energy reading of 366. The wind is a gentle offshore from the N. That's a solid session.
Then, on Friday the 7th of August, we get the biggest swell of the window. The morning has 6ft from the NNW, but it's a short period of 7 seconds. The combined energy is a hefty 282. The wind is light and offshore, so it'll be clean. This is a punchy, short-period swell. It's not the best shape, but for the size and the clean conditions, it's a big day for the more experienced crew. It's over 5ft, so it's getting a bit too big for beginners.
So, to sum it up: the first week is a slow burn, but Monday the 27th morning is your absolute best bet for clean, glassy fun. The second week has a couple of solid, clean mornings, especially the 2nd and 7th of August, with the 7th offering the biggest, most powerful swell of the lot.
Rusty out.
Short Range ForecastMostly dry. Warm (max 23°C on Thu afternoon, min 15°C on Sat night). Winds increasing (calm on Thu night, fresh winds from the NNW by Sat afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Mon morning, min 17°C on Tue night). Winds decreasing (fresh winds from the NNW on Sun afternoon, calm by Mon morning). | ||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||
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) | WNW 9 | NNW 7 | NNW 7 | NNW 7 | W 8 | W 6 | WNW 6 | NW 7 | NNW 7 | WNW 9 | WNW 9 | NNW 6 | NNW 10 | NNW 10 | NNW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 16 | 21 | 21 | 19 | 12 | 30 | 137 | 192 | 254 | 16 | 27 | 167 | 272 | 284 | 251 | 170 | 138 | 123 | 22 | 25 | 149 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | glassy | cross-on | cross-on | glassy | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross | glassy | on | cross | cross-off | cross-on | cross | cross-off |
High Tide | 11:01AM2.58m | 11:26PM2.48m | 12:10PM2.60m | 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 | ||||||||
Low Tide | 5:18PM1.51m | 5:42AM1.44m | 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 | ||||||||
 | |  |  | | | | | | | | | | | | | | | | | | |
 | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — |
 | — | — | 9:01 | — | — | 9:00 | — | — | 9:00 | — | — | 9:00 | — | 8:59 | — | — | 8:58 | — | — | 8:57 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 23 | 20 | 21 | 21 | 19 | 22 | 22 | 18 | 24 | 23 | 23 | 29 | 28 | 26 | 25 | 23 | 18 | 22 | 22 | 17 |
Feels °C | 21 | 22 | 21 | 19 | 20 | 21 | 20 | 18 | 14 | 19 | 19 | 20 | 28 | 27 | 24 | 25 | 23 | 18 | 22 | 22 | 17 |
Swell 1 Height (m) Direction Period (s) | NW 6 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | W 6 | WNW 6 | W 8 | — | WNW 9 | WNW 9 | NW 12 | NNW 10 | NNW 10 | NNW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 6 |
| kJ | 10 | 21 | 21 | 19 | 9 | 30 | 137 | 5 | — | 16 | 27 | 65 | 272 | 284 | 251 | 170 | 138 | 123 | 20 | 25 | 149 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 9 | SW 4 | WNW 8 | W 8 | W 7 | W 11 | NW 10 | — | NW 13 | NW 13 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 8 | WNW 11 | NW 8 | WNW 10 | WNW 10 |
| kJ | 16 | 16 | 3 | 7 | 12 | 25 | 2 | 4 | — | 7 | 6 | 26 | 25 | 26 | 15 | 7 | 5 | 12 | 18 | 21 | 20 |
Swell 3 Height (m) Direction Period (s) | NNW 8 | SW 13 | WNW 9 | SW 12 | SW 11 | NNW 7 | — | S 12 | — | — | — | S 15 | WNW 8 | — | — | W 12 | W 12 | — | WNW 11 | N 10 | NW 10 |
| kJ | 6 | 7 | 15 | 5 | 5 | 9 | — | 3 | — | — | — | 4 | 14 | — | — | 3 | 3 | — | 22 | 2 | 15 |
Wind waves Height (m) Direction Period (s) | — | SSW 3 | — | SW 4 | SW 4 | — | — | NW 7 | NNW 7 | NNW 6 | NNW 5 | NNW 6 | — | — | — | — | — | — | NW 6 | NW 6 | — |
| kJ | — | 1 | — | 3 | 6 | — | — | 192 | 254 | 79 | 90 | 167 | — | — | — | — | — | — | 60 | 77 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 438 | 146 | 19 | 869 | 146 | 0 | 0 | 130 | 182 | 19 | 130 | 18 | 0 | 100 | 0 | 104 | 104 | 0 | 169 | 104 | 0 |
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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