Surf Forecasts:
Viana do Castelo surf forecast from 14 Jul 2026:
- Best quality surf: Tuesday 14 Jul, 10PM (local time) - 1.5ft (0.5m), 10s period, W swell with cross-offshore winds.
- Most powerful swell: Saturday 18 Jul, 10PM (local time) - 4ft (1.2m), 7s period, NW swell with 127 kJ wave energy.
- Next surfable swell (1★+): Tuesday 14 Jul, 10PM (local time) - 1.5ft (0.5m), 10s 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 Tuesday (Jul 14) at 10PM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.5m and 5s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Viana do Castelo in the next 16 days are 1.2m 7s and forecast to arrive on Saturday (Jul 18) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Saturday (Jul 18) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 14th Jul) | 1.5ft (0.5m) 10s |
| Best Surf | 10PM (Tue 14th Jul) | 1.5ft (0.5m) 10s |
| Most Powerful | 10PM (Sat 18th Jul) | 4ft (1.2m) 7s |
Table - best surf conditions forecast for Viana do Castelo over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what we’ve got.
The first week or so is pretty dead. From the 14th through the 23rd, we’re looking at tiny waves, mostly 1 to 2 feet, with a lot of cross-on or light winds. There’s a few glassy mornings, but the energy is weak – not enough to get excited about. It’s a real slow start.
The big highlight comes on Friday, July 24th. Viana do Castelo (river) gets a solid pulse of WNW swell, around 5 feet, with a period of 11 seconds and good energy (616). The wind is light and cross-off from the NNW, so it’s clean. The water is a bit colder than usual for this time of year, about 63°, running a degree cooler. That morning session is the one to aim for. The afternoon gets bigger, up to 7 feet, but that’s too much for this spot.
Saturday, July 25th morning is another good one. A 6-foot NW swell, period of 10 seconds, and energy at 845. Clean cross-off winds again. The afternoon gets windier and smaller, but the morning is solid.
After that, Sunday, July 26th morning has a clean 3-foot NW swell with 337 energy – still worth a look, but not as strong. The following days have bigger swells, but they’re either too big for the break or the wind isn’t right. The best windows are those Friday and Saturday mornings.
So, if you’re waiting for a wave, the 24th and 25th are your best bets. The rest of the time, it’s a long stretch of small stuff.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Tue afternoon, min 17°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Sat afternoon, min 17°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | |||||||||||||||
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 11 | WNW 10 | W 10 | W 9 | W 9 | WNW 8 | W 9 | WNW 9 | W 8 | W 8 | W 8 | WNW 8 | NNW 5 | WNW 8 | NW 7 | NW 8 | NW 9 | NW 8 | NNW 8 | NNW 7 | WNW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 40 | 33 | 46 | 56 | 39 | 22 | 41 | 26 | 22 | 21 | 12 | 13 | 22 | 13 | 119 | 14 | 14 | 31 | 23 | 35 | 24 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | glassy | cross-on | cross-on | cross-off | glassy | cross-on | glassy | glassy | cross | off | glassy | cross | cross | cross-on | cross-on | glassy | cross-on | on | glassy |
High Tide | 3:54PM3.58m | 4:24AM3.34m | 4:42PM3.63m | 5:11AM3.35m | 5:27PM3.61m | 5:57AM3.30m | 6:11PM3.51m | 6:41AM3.20m | 6:55PM3.36m | 7:25AM3.06m | 7:38PM3.16m | 8:11AM2.90m | 8:23PM2.95m | ||||||||
Low Tide | 10:09PM0.46m | 10:22AM0.57m | 10:56PM0.42m | 11:08AM0.59m | 11:41PM0.46m | 11:52AM0.67m | 00:25AM0.56m | 12:36PM0.80m | 1:09AM0.72m | 1:20PM0.97m | 1:53AM0.90m | 2:06PM1.16m | 2:39AM1.09m | ||||||||
 | |  | | | |  | | | | |  | | | | | | | | | | |
 | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — |
 | — | — | 9:08 | — | — | 9:07 | — | — | 9:07 | — | — | 9:07 | — | — | 9:06 | — | — | 9:05 | — | — | 9:05 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 19 | 22 | 21 | 19 | 21 | 21 | 19 | 21 | 21 | 18 | 22 | 23 | 19 | 22 | 22 | 19 | 23 | 23 | 17 |
Feels °C | 21 | 22 | 20 | 22 | 21 | 20 | 21 | 21 | 21 | 20 | 19 | 17 | 22 | 23 | 20 | 22 | 23 | 20 | 23 | 23 | 19 |
Swell 1 Height (m) Direction Period (s) | W 6 | W 6 | W 10 | W 9 | W 9 | WNW 8 | W 9 | WNW 9 | W 8 | W 8 | W 8 | WNW 8 | NNW 5 | WNW 8 | NW 7 | NW 5 | NW 5 | NW 8 | NNW 7 | NNW 7 | NW 7 |
| kJ | 16 | 15 | 46 | 56 | 39 | 22 | 41 | 26 | 22 | 21 | 12 | 13 | 22 | 13 | 119 | 12 | 8 | 31 | 18 | 35 | 14 |
Swell 2 Height (m) Direction Period (s) | WNW 11 | WNW 10 | WSW 5 | NW 6 | W 5 | W 5 | W 5 | W 5 | WSW 5 | WSW 5 | WSW 4 | SW 4 | WNW 8 | SW 5 | NW 10 | NW 8 | NW 9 | W 8 | NNW 8 | W 7 | WNW 11 |
| kJ | 40 | 33 | 9 | 2 | 9 | 8 | 4 | 4 | 5 | 4 | 2 | 1 | 22 | 1 | 4 | 14 | 12 | 12 | 23 | 4 | 24 |
Swell 3 Height (m) Direction Period (s) | WNW 7 | WNW 7 | NNW 7 | SW 14 | SW 15 | W 10 | SW 12 | SW 13 | S 11 | SW 11 | SW 6 | SW 6 | SW 6 | NW 11 | SW 19 | NNW 9 | W 9 | NW 10 | W 8 | WNW 12 | W 7 |
| kJ | 10 | 5 | 4 | 8 | 8 | 17 | 6 | 7 | 2 | 5 | 1 | 1 | 1 | 5 | 15 | 8 | 14 | 4 | 11 | 14 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | NW 3 | NNW 4 | — | NNW 5 | — | SSE 2 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 2 | 12 | — | 17 | — | 1 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 104 | 0 | 81 | 180 | 0 | 0 | 983 | 733 | 981 | 588 | 700 | 0 | 258 | 2 | 126 | 146 | 0 | 336 | 146 | 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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