Surf Forecasts:
Viana do Castelo surf forecast from 5 Jul 2026:
- Best quality surf: Saturday 11 Jul, 10PM (local time) - 7.5ft (2.3m), 7s period, NNW swell with cross-offshore winds.
- Most powerful swell: Saturday 11 Jul, 10PM (local time) - 7.5ft (2.3m), 7s period, NNW swell with 559 kJ wave energy.
- Next surfable swell (1★+): Sunday 5 Jul, 7PM (local time) - 1.5ft (0.4m), 9s 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 7PM. The primary swell is predicted to be 0.4m and 9s period with a secondary swell of 0.3m and 9s. 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 2.3m 7s and forecast to arrive on Saturday (Jul 11) 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 1.3m 6s period and expected on Saturday (Jul 11) at 4PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Sun 5th Jul) | 1.5ft (0.4m) 9s |
| Best Surf | 10PM (Sat 11th Jul) | 7.5ft (2.3m) 7s |
| Most Powerful | 10PM (Sat 11th Jul) | 7.5ft (2.3m) 7s |
Table - best surf conditions forecast for Viana do Castelo over the next 16 days.
Updates in hr min s Forecast update imminent
What’s the story, folks? Rusty here, looking at the Viana do Castelo stretch. Water temp is about 62°F, which is a little over 3°F colder than usual – you’ll feel that nip.
First thing, the forecast is pretty quiet for a good while. There’s a long gap before anything worth paddling out for. The only glimmer on the first day is Sunday morning, July 5th, at Viana do Castelo. This is a river break that’s fairly consistent but often has a few heads in the water. Early, we’ve got a 2ft swell from the NW with a 10-second period. The combined energy is weak (84), but the wind is glassy from the S at just 3 mph. It’ll be clean, but real small.
From Sunday afternoon all the way through to Friday July 10th morning, it’s poor. We’re talking messy cross-shore breezes, and wave heights dropping to 1ft with short 8-second periods. Energy dips as low as 20. Not a lot going on. Wednesday July 8th morning cleans up with a light cross-off breeze from the NNW and a 1ft swell – still tiny and weak (energy 56).
Friday July 10th morning sees a tiny pick-up: 3ft from the WNW, period 9 seconds, combined energy hits 115 (moderate). Wind is a clean cross-off from the NNW at just 6 mph. Barely surfable.
The best chance of a wave comes on Sunday July 12th morning. Swell jumps to 6ft from the NW, period is short at 8 seconds, but the energy bumps up to 389. Wind is a clean cross-off from the N at 12 mph. That’s the biggest push, but it’s short-period, so it’ll be a bit lumpy. For experienced surfers, that’s your window. The afternoon gets too windy (25 mph). Monday July 13th morning offers similar conditions at 5ft but still feels marginal.
After that it fades into small, weak stuff again. Saturday July 19th morning offers a little 4ft NW pulse with a light cross-off breeze, and Monday July 20th morning turns glassy with no wind and a 3ft NW swell – but it’s low energy (70) and a short 6-second period.
There’s no real standout here. If you’re keen, Sunday July 12th morning is the best of a bad lot. Otherwise, it’s a waiting game. For a river break like this, run of flat days is normal.
- Rusty
Short Range ForecastMostly dry. Warm (max 33°C on Sun morning, min 16°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Wed morning, min 16°C on Fri 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 | WNW 8 | WNW 8 | WNW 8 | NNW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 50 | 24 | 21 | 32 | 31 | 26 | 13 | 12 | 20 | 38 | 55 | 74 | 75 | 73 | 73 | 94 | 70 | 54 | 55 | 72 | 379 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | glassy | glassy | cross | glassy | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 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 | 33 | 30 | 27 | 26 | 25 | 18 | 22 | 21 | 18 | 23 | 22 | 18 | 21 | 23 | 18 | 22 | 22 | 18 | 26 | 25 | 23 |
Feels °C | 30 | 27 | 25 | 26 | 25 | 19 | 22 | 20 | 17 | 21 | 20 | 16 | 20 | 21 | 17 | 19 | 18 | 16 | 21 | 19 | 18 |
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 | NW 5 | WNW 9 | WNW 9 | NW 5 | WNW 9 | WNW 9 | NW 5 | WNW 8 | WNW 8 | NW 9 |
| kJ | 50 | 24 | 21 | 32 | 31 | 26 | 13 | 12 | 20 | 38 | 55 | 18 | 75 | 73 | 27 | 94 | 70 | 31 | 55 | 72 | 226 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 9 | WNW 9 | NW 9 | NW 8 | NNW 8 | WNW 4 | NW 8 | W 8 | W 7 | — | WNW 10 | NW 5 | S 17 | WNW 9 | NW 4 | SW 17 | WNW 8 | NW 11 | NW 10 | SW 21 |
| kJ | 28 | 16 | 16 | 19 | 11 | 6 | 1 | 2 | 5 | 4 | — | 74 | 12 | 6 | 73 | 10 | 11 | 54 | 31 | 51 | 18 |
Swell 3 Height (m) Direction Period (s) | NNW 5 | SW 14 | NNW 5 | SW 12 | SW 13 | WNW 3 | NNW 8 | NW 11 | NW 7 | NW 7 | — | — | — | — | SW 16 | SW 17 | — | NW 12 | SW 16 | SW 16 | SW 15 |
| kJ | 6 | 7 | 3 | 6 | 6 | 1 | 6 | 5 | 2 | 2 | — | — | — | — | 10 | 11 | — | 6 | 10 | 10 | 9 |
Wind waves Height (m) Direction Period (s) | — | NW 5 | NW 3 | — | — | NW 3 | — | NW 4 | NW 5 | NW 5 | NW 5 | — | — | NW 5 | — | — | NW 3 | NW 5 | NW 5 | NW 6 | NNW 7 |
| kJ | — | 4 | 2 | — | — | 1 | — | 7 | 13 | 12 | 18 | — | — | 17 | — | — | 5 | 20 | 17 | 104 | 379 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 146 | 0 | 0 | 311 | 19 | 576 | 779 | 0 | 0 | 769 | 0 | 10 | 768 | 0 | 0 | 781 | 2 | 19 | 438 | 312 |
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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