Surf Forecasts:
Viana do Castelo surf forecast from 3 Jul 2026:
- Best quality surf: Friday 3 Jul, 7PM (local time) - 3ft (0.9m), 11s period, WNW swell with cross-offshore winds.
- Most powerful swell: Friday 3 Jul, 1PM (local time) - 3ft (0.9m), 11s period, WNW swell with 186 kJ wave energy.
- Next surfable swell (1★+): Friday 3 Jul, 1PM (local time) - 3ft (0.9m), 11s 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 Friday (Jul 03) at 1PM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.1m and 16s. 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 0.9m 11s and forecast to arrive on Friday (Jul 03) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Friday (Jul 03) at 1PM.
| Wave Type | Time (WEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Fri 3rd Jul) | 3ft (0.9m) 11s |
| Best Surf | 7PM (Fri 3rd Jul) | 3ft (0.9m) 11s |
| Most Powerful | 1PM (Fri 3rd Jul) | 3ft (0.9m) 11s |
Table - best surf conditions forecast for Viana do Castelo over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, let’s look at what’s coming up in the next couple of weeks in feet and miles per hour.
Honestly, it’s a pretty quiet run for most of this forecast period. There’s a long gap of small, ordinary waves before anything worthwhile shows up. For the first week and a half, it’s mostly knee-high dribble with poor winds. The water temp here is sitting at about 63°F, which is a touch cooler than usual for this time of year – nothing crazy.
The only real standout is going to be Friday, July 17th, early morning at Viana do Castelo. That’s when we finally get some proper size with a glassy 5ft swell rolling in from the west. The swell period is a solid 9 seconds, and the combined wave energy is pushing 397 – that’s moderate but punchy energy. The break is a river mouth, so it can handle some size, and with those clean conditions, it’s going to be a fun session for sure. It’s a fairly consistent spot, but it does get crowded often, so get in early.
After that, the afternoon on the 17th and into the 18th keeps the size up, but the wind swings around to cross-shore, knocking the quality down a notch. Still, those mornings around the 17th and 18th of July are your best bets in this whole outlook. The swell sits around 5ft from the west-northwest, which is proper for intermediate and advanced surfers. Beginners might find it a bit much when it’s over 5ft.
Saturday the 18th morning has a 5ft west-northwest swell with a light cross-shore breeze – rideable but not as clean as the Friday morning glass-off. The combined energy is still strong at 344, so there’s plenty of push.
Everything before that is small, weak, and blown out. There’s a stretch from July 3rd right through to July 16th where the waves are tiny, the period is short, and the wind is mostly onshore or cross-onshore. Not worth getting wet for. The combined energy values barely crack three digits most of the time, and when they do, it’s still poor quality.
So, mark your calendar for Friday, July 17th – early. That’s the one.
Rusty.
Short Range ForecastMostly dry. Warm (max 34°C on Fri morning, min 21°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Mon morning, min 15°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 3 | Saturday 4 | Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | |||||||||||||||
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 11 | WNW 11 | WNW 11 | WNW 10 | W 10 | NW 11 | NW 10 | NW 10 | NW 9 | WNW 10 | WNW 10 | WNW 9 | WNW 8 | W 8 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 186 | 186 | 128 | 82 | 50 | 31 | 36 | 24 | 21 | 32 | 31 | 26 | 13 | 12 | 10 | 35 | 50 | 48 | 46 | 46 | 48 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | cross-off | glassy | cross | glassy | glassy | cross | glassy | cross-on | cross | cross-off | cross | cross | glassy | on | cross-on | cross | glassy | cross-on | glassy |
High Tide | 5:52PM3.24m | 6:17AM2.97m | 6:30PM3.21m | 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 | ||||||||
Low Tide | 11:33AM0.92m | 00:06AM0.83m | 12:11PM0.93m | 00:45AM0.85m | 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 | ||||||||
 | |  | | | | |  |  | | | | | | | | | | | | | |
 | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — |
 | — | — | 9:13 | — | — | 9:13 | — | — | 9:12 | — | — | 9:12 | — | — | 9:12 | — | — | 9:12 | — | — | 9:10 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 34 | 34 | 32 | 32 | 30 | 29 | 33 | 29 | 26 | 26 | 24 | 17 | 20 | 20 | 17 | 22 | 21 | 17 | 22 | 22 | 17 |
Feels °C | 32 | 31 | 29 | 30 | 28 | 27 | 31 | 27 | 24 | 25 | 23 | 17 | 19 | 19 | 17 | 22 | 21 | 18 | 21 | 22 | 18 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | WNW 11 | NNW 6 | WNW 10 | W 10 | WNW 10 | NW 10 | NW 10 | NW 9 | WNW 10 | WNW 10 | WNW 9 | NW 4 | W 8 | WNW 4 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 |
| kJ | 186 | 186 | 68 | 82 | 50 | 31 | 36 | 24 | 21 | 32 | 31 | 26 | 4 | 12 | 3 | 35 | 50 | 48 | 46 | 46 | 48 |
Swell 2 Height (m) Direction Period (s) | NNW 6 | S 16 | WNW 11 | NNW 6 | NNW 6 | NW 5 | WNW 9 | WNW 9 | WNW 9 | NW 8 | NW 8 | NNW 8 | WNW 8 | NNW 8 | WNW 10 | W 8 | WNW 4 | NW 6 | NNW 5 | WNW 11 | NW 4 |
| kJ | 42 | 5 | 128 | 20 | 12 | 7 | 28 | 16 | 16 | 18 | 11 | 6 | 13 | 6 | 10 | 4 | 1 | 5 | 3 | 13 | 1 |
Swell 3 Height (m) Direction Period (s) | S 16 | — | NNW 8 | NNW 8 | NW 8 | NW 11 | NNW 5 | SW 14 | W 11 | SW 12 | SW 13 | WNW 3 | NNW 8 | W 11 | W 8 | WNW 4 | NW 6 | — | N 7 | NNW 5 | SW 16 |
| kJ | 5 | — | 26 | 7 | 11 | 31 | 3 | 7 | 2 | 6 | 6 | 1 | 6 | 2 | 5 | 2 | 1 | — | 1 | 2 | 10 |
Wind waves Height (m) Direction Period (s) | — | NNW 6 | — | — | — | — | — | NW 5 | WNW 3 | — | — | NW 3 | — | NW 4 | — | — | — | — | S 2 | SSW 2 | — |
| kJ | — | 29 | — | — | — | — | — | 4 | 1 | — | — | 1 | — | 5 | — | — | — | — | 1 | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 260 | 0 | 0 | 130 | 0 | 0 | 146 | 0 | 106 | 311 | 180 | 778 | 1472 | 427 | 104 | 104 | 5 | 0 | 104 | 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.
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