
Surf Forecasts:
Viana do Castelo surf forecast from 22 Jul 2026:
- Best quality surf: Saturday 25 Jul, 7PM (local time) - 7.5ft (2.3m), 7s period, NW swell with cross-offshore winds.
- Most powerful swell: Saturday 25 Jul, 10PM (local time) - 8ft (2.4m), 8s period, NNW swell with 645 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 1AM (local time) - 1.5ft (0.4m), 7s period with NNW 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 1AM. The primary swell is predicted to be 0.4m and 7s period with a secondary swell of 0.4m and 4s. 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 2.4m 8s 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 1.5m 6s period and expected on Sunday (Jul 26) at 7PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Fri 24th Jul) | 1.5ft (0.4m) 7s |
| Best Surf | 7PM (Sat 25th Jul) | 7.5ft (2.3m) 7s |
| Most Powerful | 10PM (Sat 25th Jul) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Viana do Castelo over the next 16 days.
The Lowdown
Alright, let’s take a look at what’s coming up for the Viana do Castelo area over the next couple of weeks.
Right up front, I gotta tell you, it’s a slow start. From Wednesday through Friday, the swell is tiny and the wind is all wrong. Mostly onshore or cross-onshore. Not much to get excited about. Leave the stick in the car for a few days.
Now, Saturday the 25th, we finally get something. Morning goes glassy calm, with a small 3ft swell from the west, but the period is only 6 seconds and the energy is weak (59). It’s surfable, but just barely. That afternoon though, the wind picks up hard from the northwest at 25 km/h with a 5ft NW swell showing moderate energy (289). The problem is, the wind is side-shore and the period is short, so it’s going to be a mess. With that wind and the open beach setup, I’d say this is more of a kite-surf day than a paddle day.
Sunday the 26th stays messy. The morning has some cross-offshore wind and a 4ft swell (114 energy), but it’s only 6 seconds. The afternoon blows up to 35 km/h from the NNW – way too much wind.
Monday the 27th – now we’re onto something special. That morning it’s clear skies and flat calm, glassy. Swell runs 5ft from the NNW with a 10-second period. The combined energy jumps to a solid 397. That’s strong. Wind is almost nothing from the NNE. The water is sitting around 68°, which is a touch warmer than usual for the season. This is the standout day in the entire outlook. The river mouth and point should be handling that clean groundswell really well, and with no crowds mentioned, you could have it quiet out there.
After that, the rest of the week and into early August is pretty average. There are a few mornings like the 28th and 30th with some size, but the period stays short (7-9 seconds) and the wind keeps shifting around. Sunday, August 2nd shows a 5ft NW swell with 359 energy, but with light rain and an onshore wind, it’s only a marginal call.
From the 3rd through the 6th of August, we get 3ft-4ft swells but the wind is either too strong or onshore, and the periods stay short. Not much to write home about.
So, to sum it up: if you’ve got one day to get wet, make it Monday, July 27th, first light. Glassy, clean, good energy, and the river mouth should be running. The rest of the period is mostly a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Wed morning, min 17°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Mon morning, min 15°C on Sat night). Winds increasing (calm on Sat morning, fresh winds from the NNW by Sun afternoon). | ||||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | |||||||||||||||
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 10 | WNW 10 | WNW 9 | WNW 9 | NW 7 | NNW 7 | NNW 7 | WSW 5 | W 7 | W 6 | NW 8 | NNW 7 | NNW 6 | WNW 9 | NNW 6 | NNW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 |
Wave Graph | |||||||||||||||||||||
19 | 18 | 16 | 16 | 16 | 21 | 19 | 19 | 89 | 43 | 289 | 384 | 91 | 16 | 239 | 371 | 360 | 380 | 220 | 216 | 260 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-off | cross-on | on | glassy | cross-on | on | cross | glassy | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | glassy | cross-on | cross | cross-off |
High Tide | 10:14PM2.57m | 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 | ||||||||
Low Tide | 4:03PM1.46m | 4:34AM1.39m | 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 | ||||||||
6:18 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | |
— | — | 9:02 | — | — | 9:01 | — | — | 9:00 | — | — | 9:00 | — | — | 9:00 | — | 8:59 | — | — | 8:58 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 19 | 22 | 22 | 19 | 21 | 21 | 19 | 21 | 21 | 19 | 24 | 23 | 21 | 29 | 28 | 27 | 26 | 24 | 21 |
Feels °C | 22 | 22 | 21 | 21 | 22 | 21 | 20 | 20 | 20 | 20 | 18 | 15 | 19 | 19 | 18 | 28 | 26 | 26 | 27 | 24 | 22 |
Swell 1 Height (m) Direction Period (s) | NNW 6 | NNW 6 | NNW 6 | NW 6 | NW 7 | NNW 7 | NNW 7 | NNW 7 | W 7 | W 6 | — | S 16 | WNW 9 | WNW 9 | NNW 11 | NNW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 |
14 | 15 | 15 | 10 | 14 | 21 | 19 | 9 | 89 | 43 | — | 5 | 16 | 16 | 84 | 371 | 360 | 380 | 220 | 216 | 260 | |
Swell 2 Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | SW 4 | WNW 8 | WNW 8 | NNW 7 | NNW 7 | — | — | NW 13 | NNW 13 | S 15 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | W 8 | WNW 11 |
19 | 18 | 16 | 16 | 16 | 4 | 7 | 7 | 9 | 11 | — | — | 7 | 16 | 4 | 26 | 16 | 7 | 7 | 5 | 12 | |
Swell 3 Height (m) Direction Period (s) | SW 15 | SW 14 | SW 13 | NNW 8 | SW 13 | WNW 9 | SW 12 | SW 11 | S 11 | W 8 | — | — | — | — | — | — | — | — | — | W 12 | — |
8 | 8 | 7 | 6 | 7 | 15 | 5 | 5 | 2 | 5 | — | — | — | — | — | — | — | — | — | 11 | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSW 3 | — | SW 4 | WSW 5 | — | — | NW 8 | NNW 7 | NNW 6 | NNW 5 | NNW 6 | — | — | — | — | — | — |
— | — | — | — | 2 | — | 8 | 19 | — | — | 289 | 384 | 91 | 61 | 239 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 126 | 146 | 137 | 165 | 168 | 0 | 869 | 146 | 2 | 0 | 130 | 151 | 416 | 248 | 18 | 0 | 14 | 0 | 100 | 120 | 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.










