
Surf Forecasts:
Viana do Castelo surf forecast from 8 Jul 2026:
- Best quality surf: Thursday 9 Jul, 1AM (local time) - 2.5ft (0.7m), 10s period, WNW swell with glassy winds.
- Most powerful swell: Saturday 11 Jul, 10PM (local time) - 2.5ft (0.8m), 10s period, WNW swell with 117 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 1AM (local time) - 2.5ft (0.7m), 10s period with WNW 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 Thursday (Jul 09) at 1AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.9m and 5s. 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 0.8m 10s 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 0.8m 5s period and expected on Wednesday (Jul 08) at 10PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Thu 9th Jul) | 2.5ft (0.7m) 10s |
| Best Surf | 1AM (Thu 9th Jul) | 2.5ft (0.7m) 10s |
| Most Powerful | 10PM (Sat 11th Jul) | 2.5ft (0.8m) 10s |
Table - best surf conditions forecast for Viana do Castelo over the next 16 days.
Alright folks, it’s Rusty here. Let's have a look at what’s on offer for Viana do Castelo over the next couple of weeks.
Honestly, I’m looking at a pretty flat, quiet picture for the whole 16-day run. There’s no real standout session on the cards, and the surf is going to be very small and mostly weak for the entire period. The combined energy of the swells never gets above moderate, hitting a max of just 149 (moderate energy) on Saturday the 11th, but that comes with poor conditions.
The first real chance to get wet comes on Friday, July 10th. The morning is the pick of the whole outlook, with a tiny 3ft swell from the WNW and glassy conditions. The water temp is sitting at 61°, which is a solid 4° colder than usual for this time of year, so you’ll want a good wetsuit. It’s just surfable, nothing to write home about, but at least it’s clean. The afternoon gets a light cross-shore wind, so it’s less appealing.
The next window is Monday morning, July 13th. Again, we’re looking at glassy conditions, but the swell drops to a tiny 2ft from the NW. The energy is weak (54). It’s a small, clean wave for a longboard or a foiler, but it’s not going to get your heart pumping.
Tuesday morning, July 14th, offers a similar story: glassy, 2ft from the WNW, and weak energy (56). After that, the wind starts to blow stronger and the surf gets smaller and more confused. From the 15th onwards, we’re stuck with a lot of strong cross-offshore winds from the NNW, especially in the afternoons, blowing up to 18-22 mph. The swell is tiny, mostly under 2ft. While the cross-off wind cleans the surface, the waves are just too small for anything meaningful.
There is a brief moment on Friday, July 17th morning, with a 2ft WNW swell and cross-off wind, but the period is a short 6 seconds, and the energy is still weak (51). The next morning, the 18th, has a very long-period 1ft swell (11 seconds) but that’s just a knee-high dribble.
Viana do Castelo is a river mouth, fairly consistent, and exposed to the west swell. But for this entire forecast, the energy is just not there. There are no standout days. The crowds are often around here, but with waves this small, most folks will be on the beach. The best advice is to keep an eye on the forecasts; a blank run like this can change quickly.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Fri morning, min 15°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Mon afternoon, min 16°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wed 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | NW 12 | NW 11 | NW 10 | W 9 | NW 9 | NW 8 | NW 8 | NW 8 | WSW 6 | WSW 6 | WNW 7 | WNW 10 | WNW 10 | W 9 |
Wave Graph | |||||||||||||||||||||
80 | 85 | 75 | 75 | 73 | 101 | 88 | 53 | 92 | 80 | 79 | 74 | 69 | 54 | 34 | 15 | 12 | 26 | 20 | 31 | 25 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | on | cross-on | glassy | glassy | cross | glassy | on | cross-on | glassy | cross-on | on | glassy | glassy | cross-on | cross-off | glassy | on | cross | cross-on |
High Tide | 9:58PM2.90m | 10:44AM2.91m | 11:11PM2.87m | 11:56AM3.00m | 00:26AM2.91m | 1:05PM3.14m | 1:37AM3.02m | 2:07PM3.31m | 2:38AM3.15m | 3:03PM3.47m | 3:34AM3.27m | 3:54PM3.58m | 4:24AM3.34m | ||||||||
Low Tide | 4:20AM1.04m | 5:00PM1.16m | 5:32AM1.02m | 6:16PM1.07m | 6:42AM0.94m | 7:25PM0.91m | 7:45AM0.82m | 8:25PM0.73m | 8:42AM0.70m | 9:19PM0.57m | 9:33AM0.61m | 10:09PM0.46m | 10:22AM0.57m | ||||||||
— | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | |
— | 9:12 | — | — | 9:10 | — | — | 9:10 | — | — | 9:09 | — | — | 9:09 | — | — | 9:08 | — | — | 9:08 | 9:07 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 16 | 20 | 20 | 17 | 21 | 20 | 17 | 21 | 20 | 17 | 20 | 20 | 17 | 20 | 21 | 18 | 21 | 21 | 19 | 21 |
Feels °C | 18 | 15 | 20 | 20 | 18 | 21 | 21 | 18 | 21 | 20 | 19 | 19 | 20 | 18 | 20 | 21 | 19 | 21 | 21 | 20 | 20 |
Swell 1 Height (m) Direction Period (s) | WNW 10 | NW 5 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | NW 11 | NW 10 | W 9 | NW 9 | NW 8 | NW 8 | NW 8 | WSW 6 | WSW 6 | WNW 7 | W 6 | W 6 | W 6 |
80 | 47 | 75 | 75 | 73 | 101 | 88 | 53 | 92 | 80 | 79 | 74 | 69 | 54 | 34 | 15 | 12 | 26 | 10 | 9 | 20 | |
Swell 2 Height (m) Direction Period (s) | — | WNW 10 | NW 5 | S 17 | NW 4 | SW 17 | NW 13 | NW 12 | WNW 9 | WNW 9 | NW 9 | W 8 | WSW 7 | WSW 7 | WSW 6 | NNW 8 | NNW 8 | WSW 6 | WNW 10 | WNW 10 | W 9 |
— | 85 | 16 | 6 | 7 | 11 | 7 | 50 | 43 | 59 | 71 | 31 | 18 | 15 | 14 | 13 | 12 | 7 | 20 | 31 | 25 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SW 16 | — | SW 17 | SW 17 | WNW 4 | SW 16 | — | SW 15 | SW 19 | W 8 | WNW 8 | NW 8 | WNW 7 | WNW 11 | NNW 7 | NNW 7 | NW 8 |
— | — | — | — | 10 | — | 11 | 11 | 1 | 10 | — | 8 | 15 | 5 | 6 | 10 | 5 | 23 | 10 | 5 | 3 | |
Wind waves Height (m) Direction Period (s) | NW 5 | — | — | NW 5 | — | — | NW 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
29 | — | — | 8 | — | — | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 100 | 0 | 169 | 100 | 0 | 0 | 100 | 0 | 104 | 100 | 0 | 104 | 146 | 0 | 0 | 106 | 104 | 0 | 104 | 19 | 183 |
Best forecast wave conditions in Douro and Minho | |||||||||||||||||||||
Best forecast wave conditions in Portugal | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











