Surf Forecasts:
Viana do Castelo surf forecast from 12 Jul 2026:
- Best quality surf: Monday 13 Jul, 7AM (local time) - 1.5ft (0.5m), 8s period, NW swell with cross-offshore winds.
- Most powerful swell: Friday 17 Jul, 10PM (local time) - 5.5ft (1.7m), 6s period, NNW swell with 231 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 7AM (local time) - 1.5ft (0.5m), 8s 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 Monday (Jul 13) at 7AM. The primary swell is predicted to be 0.5m and 8s period with a secondary swell of 0.3m and 6s. Another secondary swell of 0.7m and 4s is also forecast. 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 1.7m 6s and forecast to arrive on Friday (Jul 17) 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 1.7m 6s period and expected on Friday (Jul 17) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 13th Jul) | 1.5ft (0.5m) 8s |
| Best Surf | 7AM (Mon 13th Jul) | 1.5ft (0.5m) 8s |
| Most Powerful | 10PM (Fri 17th Jul) | 5.5ft (1.7m) 6s |
Table - best surf conditions forecast for Viana do Castelo over the next 16 days.
Alright, crew. Rusty here, and the outlook for Viana do Castelo is a bit of a bummer. We're in for a long, flat spell to start. The water's sitting around 62°, which is a bit cooler than normal for this time of year.
We're looking at a week-long gap with nothing decent. The first real glimmer of hope comes on Monday, July 20th. The morning brings a clean, chest-high swell, 5 ft from the NW. It's short-period at 7 seconds, but with a light cross-offshore breeze, it'll be the first surfable waves we've seen.
The one to really watch is Tuesday, July 21st in the morning. That's the standout. You've got a head-high swell at 4 ft from the NW, with light, clean cross-offshore winds. The period is still short, but the energy is there. It's not going to be crowded, and it's your best chance for a proper session.
After that, we get a bigger pulse on Thursday, July 23rd. The morning has a solid 4 ft NW swell, but the wind is screaming offshore at 12 mph, making it messy and blown out. The afternoon swells to 5 ft, but with a 22 mph wind, it's going to be a washing machine. That's more a day for the kiteboarders.
Honestly, this is a patience game. The beginning is a write-off. Your window is that Tuesday morning, July 21st. It's not going to be perfect, but it's the cleanest ride we're getting in this 16-day run. Anything over 5 ft is expert territory.
- Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Mon afternoon, min 16°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Fri morning, min 16°C on Thu night). Winds increasing (calm on Wed night, fresh winds from the NNW by Fri afternoon). | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
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 9 | NW 8 | NW 8 | NW 8 | NW 8 | WSW 6 | WNW 11 | WNW 10 | W 10 | W 9 | W 9 | W 6 | W 9 | WNW 9 | WNW 8 | W 8 | W 8 | NNW 6 | WNW 8 | S 20 | WNW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 95 | 71 | 54 | 24 | 20 | 52 | 40 | 33 | 46 | 40 | 38 | 36 | 41 | 26 | 24 | 21 | 12 | 170 | 13 | 8 | 19 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | on | glassy | cross-on | cross-on | glassy | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 2:07PM3.31m | 2:38AM3.15m | 3:03PM3.47m | 3:34AM3.27m | 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 | ||||||||
Low Tide | 8:25PM0.73m | 8:42AM0.70m | 9:19PM0.57m | 9:33AM0.61m | 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 | ||||||||
 |  |  | | | | | |  | | | | | | | | | | | | | |
 | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — |
 | — | — | 9:09 | — | — | 9:08 | — | — | 9:08 | — | — | 9:07 | — | — | 9:07 | — | — | 9:07 | — | — | 9:06 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 18 | 21 | 22 | 18 | 21 | 21 | 18 | 21 | 21 | 19 | 21 | 21 | 18 | 23 | 22 | 18 | 25 | 22 | 19 |
Feels °C | 18 | 18 | 17 | 19 | 20 | 18 | 22 | 20 | 19 | 21 | 21 | 21 | 21 | 20 | 17 | 19 | 18 | 16 | 22 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 8 | NW 8 | NW 8 | W 6 | WSW 6 | SW 6 | WSW 6 | W 6 | W 6 | WSW 6 | W 6 | W 6 | WSW 6 | WNW 8 | W 8 | W 8 | W 6 | WNW 8 | S 20 | WNW 8 |
| kJ | 95 | 71 | 54 | 18 | 15 | 52 | 19 | 25 | 23 | 35 | 27 | 36 | 24 | 12 | 24 | 21 | 12 | 1 | 13 | 8 | 19 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 7 | W 6 | W 6 | NW 8 | NNW 8 | W 6 | WNW 10 | W 10 | W 9 | W 9 | W 8 | W 9 | WNW 9 | WSW 5 | WSW 6 | SW 6 | — | W 6 | — | SW 19 |
| kJ | 20 | 8 | 7 | 6 | 17 | 6 | 12 | 33 | 46 | 40 | 38 | 21 | 41 | 26 | 9 | 3 | 2 | — | 1 | — | 15 |
Swell 3 Height (m) Direction Period (s) | SW 15 | SW 19 | W 8 | N 8 | WNW 8 | WNW 12 | WNW 11 | WNW 7 | N 7 | SW 14 | SW 15 | W 10 | SW 13 | SW 13 | S 11 | S 11 | S 12 | — | S 15 | — | — |
| kJ | 8 | 15 | 1 | 5 | 6 | 28 | 40 | 5 | 1 | 8 | 8 | 17 | 6 | 7 | 2 | 2 | 3 | — | 4 | — | — |
Wind waves Height (m) Direction Period (s) | S 4 | SSW 4 | SSW 4 | S 4 | SSW 4 | — | — | — | — | — | — | — | — | NW 3 | NNW 3 | NW 4 | NW 5 | NNW 6 | NNW 6 | NW 6 | NNW 6 |
| kJ | 21 | 22 | 12 | 24 | 20 | — | — | — | — | — | — | — | — | 3 | 8 | 20 | 76 | 170 | 87 | 120 | 93 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 114 | 190 | 4 | 114 | 179 | 2 | 104 | 106 | 0 | 5 | 114 | 0 | 0 | 983 | 5 | 515 | 960 | 5 | 416 | 1239 | 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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