Surf Forecasts:
Viana do Castelo surf forecast from 5 Jul 2026:
- Best quality surf: Saturday 11 Jul, 10PM (local time) - 5ft (1.6m), 8s period, NW swell with glassy winds.
- Most powerful swell: Saturday 11 Jul, 10PM (local time) - 5ft (1.6m), 8s period, NW swell with 274 kJ wave energy.
- Next surfable swell (1★+): Sunday 5 Jul, 4AM (local time) - 1.5ft (0.4m), 11s 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 Sunday (Jul 05) at 4AM. The primary swell is predicted to be 0.4m and 11s period with a secondary swell of 0.4m and 10s. 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 1.6m 8s and forecast to arrive on Saturday (Jul 11) at 10PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Friday (Jul 10) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 5th Jul) | 1.5ft (0.4m) 11s |
| Best Surf | 10PM (Sat 11th Jul) | 5ft (1.6m) 8s |
| Most Powerful | 10PM (Sat 11th Jul) | 5ft (1.6m) 8s |
Table - best surf conditions forecast for Viana do Castelo over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, Rusty here. Let’s break down what we’ve got for the next couple of weeks at Viana do Castelo.
Truth is, it’s pretty quiet out there. No real swell to get the heart pumping, and even when the energy picks up a bit, the wind spoils it. The river mouth at Viana do Castelo is our only break, and while it’s often crowded, with waves this small you might have the place to yourself.
From Sunday, 5 July through to Wednesday, 8 July, we’re looking at tiny surf: 1.0 – 2 ft from the NW, with short period around 8-10 seconds. The combined swell energy is real weak, mostly in the 20-69 range. A couple of glassy mornings on Monday 6 July and Wednesday 8 July offer the cleanest looks, but there’s just no push. Winds are light and variable, with a slight cross-off on Wednesday morning keeping things tidy.
A small bump comes Thursday 9 July morning, still only 2 ft from the WNW (period 9 seconds, combined energy 77). That glassy west wind gives you the cleanest window of the week. Still, not a standout.
If I had to pick one, it’d be Thursday morning, 9 July at Viana do Castelo. Glassy, the swell at 2 ft from the WNW, and the 9-second period gives it a little shape. But you’re not missing much if you sit this one out.
From Saturday 11 July into the second week, we see a little more size. On Sunday morning, 12 July, we get 4 ft from the NW, but it’s got onshore wind from the SSW at 3 mph, a short 7-second period, and combined energy of 212 – moderate, but poor quality. That’s the biggest we get, but it’s not surfable.
Monday 20 July morning offers another glassy morning with 3 ft from the NNW (8 seconds, combined energy 96) and west-northwest wind. Clean, but still small and ordinary.
Bottom line: no real standout. Most days are poor, with the best being a few glassy windows on small days. Combined energy only cracks 100 once or twice, and even then the wind messes it up. Water temp is about average for this time of year.
Your best bet? Thursday morning 9 July or Monday morning 20 July for clean, small conditions. Otherwise, the forecast is pretty bleak. A blank run, but it happens.
Rusty.
Short Range ForecastMostly dry. Warm (max 32°C on Sun morning, min 17°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Wed morning, min 17°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | |||||||||||||||
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 10 | NW 10 | NW 9 | WNW 10 | WNW 10 | WNW 9 | WNW 8 | W 8 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NNW 7 | NW 6 | WNW 8 | NW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 50 | 24 | 21 | 32 | 31 | 26 | 13 | 12 | 20 | 38 | 55 | 74 | 66 | 73 | 71 | 71 | 70 | 116 | 54 | 103 | 244 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | glassy | glassy | cross | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross | glassy | cross-on | cross-on | cross-on | cross-on | on | cross |
High Tide | 6:57AM2.96m | 7:12PM3.16m | 7:42AM2.93m | 7:59PM3.08m | 8:35AM2.90m | 8:54PM2.99m | 9:35AM2.89m | 9:58PM2.90m | 10:44AM2.91m | 11:11PM2.87m | 11:56AM3.00m | 00:26AM2.91m | 1:05PM3.14m | 1:37AM3.02m | |||||||
Low Tide | 12:53PM0.98m | 1:27AM0.89m | 1:41PM1.04m | 2:16AM0.94m | 2:37PM1.12m | 3:14AM1.00m | 3:44PM1.17m | 4:20AM1.04m | 5:00PM1.16m | 5:32AM1.02m | 6:16PM1.07m | 6:42AM0.94m | 7:25PM0.91m | ||||||||
 | |  | | |  | | | | |  | | | | | | | | | | | |
 | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | — | 9:12 | — | — | 9:12 | — | — | 9:12 | — | — | 9:12 | — | — | 9:10 | — | — | 9:10 | — | — | 9:09 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 32 | 30 | 27 | 26 | 24 | 18 | 22 | 22 | 19 | 25 | 24 | 21 | 25 | 25 | 22 | 21 | 21 | 17 | 21 | 21 | 18 |
Feels °C | 29 | 28 | 25 | 25 | 23 | 18 | 22 | 21 | 18 | 22 | 21 | 18 | 23 | 22 | 21 | 20 | 21 | 19 | 20 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | NW 10 | NW 10 | NW 9 | WNW 10 | WNW 10 | WNW 9 | WNW 8 | W 8 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | NNW 6 | NW 6 | WNW 9 | WNW 8 | NW 6 | WNW 8 | NW 8 |
| kJ | 50 | 24 | 21 | 32 | 31 | 26 | 13 | 12 | 20 | 38 | 55 | 74 | 66 | 73 | 39 | 47 | 70 | 75 | 54 | 103 | 244 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 9 | WNW 9 | NW 9 | NW 8 | NNW 8 | NNW 8 | NNW 8 | W 8 | W 7 | — | — | NW 5 | S 17 | WNW 9 | WNW 9 | SW 17 | SW 17 | WNW 8 | NW 10 | NW 9 |
| kJ | 28 | 16 | 16 | 19 | 11 | 6 | 6 | 6 | 5 | 4 | — | — | 11 | 6 | 71 | 71 | 11 | 11 | 53 | 37 | 29 |
Swell 3 Height (m) Direction Period (s) | NNW 5 | NNW 5 | NNW 4 | SW 12 | SW 13 | WNW 3 | W 3 | NW 11 | NW 7 | NW 7 | — | — | — | — | SW 16 | SW 17 | — | — | WNW 11 | SW 16 | NW 11 |
| kJ | 6 | 3 | 2 | 6 | 6 | 1 | 1 | 5 | 2 | 2 | — | — | — | — | 10 | 11 | — | — | 12 | 10 | 19 |
Wind waves Height (m) Direction Period (s) | — | — | NW 3 | — | — | — | — | NW 4 | NW 4 | NW 5 | NW 5 | NW 4 | — | NW 3 | — | — | NW 6 | NNW 7 | — | NW 6 | — |
| kJ | — | — | 2 | — | — | — | — | 3 | 7 | 11 | 14 | 13 | — | 9 | — | — | 36 | 116 | — | 38 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 29 | 104 | 5 | 0 | 180 | 19 | 779 | 146 | 151 | 0 | 100 | 0 | 0 | 130 | 0 | 56 | 104 | 18 | 56 | 100 | 2 |
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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