Viana do Castelo Surf Break

Lat Long: 41.69° N 8.85° W

Viana do Castelo Surf Forecast and Surf Report

Issued: 12 pm 03 Aug 2026 (local time)

Forecast update in  hr  min

Today's Viana do Castelo sea temperature is
19.1° C
0.3° 

Viana do Castelo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Viana do Castelo surf forecast from 3 Aug 2026:

  • Best quality surf: Friday 7 Aug, 1AM (local time) - 4.5ft (1.4m), 7s period, NNW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 5 Aug, 7PM (local time) - 4.5ft (1.4m), 9s period, NW swell with 307 kJ wave energy.
  • Next surfable swell (1★+): Monday 3 Aug, 10PM (local time) - 3.5ft (1.1m), 8s period with W 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 (Aug 03) at 10PM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.1m and 8s. 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 1.4m 9s and forecast to arrive on Wednesday (Aug 05) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Thursday (Aug 06) at 4AM.

Wave TypeTime (WEST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Mon 3rd Aug)3.5ft (1.1m) 8s
Best Surf 1AM (Fri 7th Aug)4.5ft (1.4m) 7s
Most Powerful 7PM (Wed 5th Aug)4.5ft (1.4m) 9s

Table - best surf conditions forecast for Viana do Castelo over the next 16 days.


The Lowdown

Alright, grab your board and let’s talk about the next stretch. Honestly, the next couple of weeks are looking pretty flat and messy for most spots. The swell windows are few and far between, and even when there’s something in the water, the winds are going to be all over the place. We’ve got a long, quiet period ahead, so don’t get your hopes up for anything epic.

The first real chance of anything surfable comes on Wednesday morning, the 5th. Viana do Castelo (Viana do Castelo) will see a small pulse, around 2ft, but it’s coming from the NW with a short 10-second period. It’s clean, with a light cross-offshore breeze, but it’s weak. The energy is only reading 172, so it’s going to be gutless. It’s surfable, but you’ll be working for every little ripple. Not a standout, just a chance to get wet.

After that, the waves just die out. The sea goes quiet for a solid stretch. Thursday morning, the 6th, has a tiny 2ft wave, but it’s not doing much. Friday morning, the 7th, offers a glassy 3ft with a short-period NNW swell, but the energy is weak. The wind is dead, which is nice, but the swell is just too small to be fun. You’d be doing more floating than surfing.

The weekend is a complete write-off. Saturday the 8th and Sunday the 9th are tiny, with hardly any push at all. The swell drops to 1ft and 2ft, and the wind is all over the place. Not worth paddling out for.

The next week isn't much better. There’s a small bump on Monday morning, the 10th, with a 2ft NW swell and clean conditions, but again, it’s weak. The same pattern repeats for the next few days – small, inconsistent, and mostly cross-shore winds. You’ll see the odd glassy morning, like on Thursday the 13th and Friday the 14th, but the swell is only around 2ft. It’s the kind of surf that’s only good for a longboard and a lot of patience.

About the only thing that gets remotely interesting is the weekend of the 15th and 16th. There’s a small mix of swells, but the period drops to 6-7 seconds, which is just junky. Saturday the 15th sees 4ft to 4ft, but it’s a short-period close-out machine. The energy is picking up though, 132 and 158, so there’s a bit more push, but the quality just isn't there. Sunday the 16th is similar, with 3ft and cross-off winds in the afternoon, which will keep it clean, but the swell is still short-period.

The last real hope is Monday morning, the 17th, when the energy jumps to 231, and we see 4ft of NNW swell. The period is still short at 7 seconds, but there’s a bit more power behind it. The winds are light, so it could be less junky than the previous days, but with that short period, it’s going to be a close-out at the beach breaks. It’s a marginal call, and for a river mouth like this, it’s going to be a mess.

The water temp is around 66°F, which is about normal for this time of year, so no surprises there.

Honestly, if you’re looking for a real highlight, there isn’t one. The best you can hope for is a clean, small day with a longboard. The wind is going to be the main issue, with the cross-shore and cross-on winds messing up a lot of the small swells. If it gets too messy, the setup might be more interesting for a kite than a paddle board. Keep your expectations low, and you won’t be disappointed.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 22°C on Tue morning, min 16°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 25°C on Thu morning, min 17°C on Fri night). Wind will be generally light.

Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
0
1
1
0
1
1
0
2
1
0
1
0
0
1
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
W
9
1.3
W
8
1
W
8
0.9
W
9
0.9
W
8
0.8
W
8
0.7
NW
10
1.1
NW
9
1.4
NW
6
0.5
W
10
1.3
NNW
9
1.4
NNW
7
0.8
NNW
7
0.7
NW
8
0.7
NW
5
0.3
W
9
0.3
NW
12
0.5
NW
11
0.6
NNW
10
0.5
NW
9
0.5
NW
8
Wave Graph
Metric surfscale
Energy kJ
127
208
116
120
109
86
96
197
139
54
264
175
56
62
23
14
21
55
64
40
34
Wind (km/h)
15
SSE
15
S
5
SSE
10
S
10
WSW
10
N
15
NNW
25
NW
20
N
15
NNW
25
NW
10
N
5
NW
20
NW
5
N
5
W
15
NW
10
NNE
5
NW
15
NW
10
NNE
Wind State
cross-on
cross-on
glassy
cross-on
on
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
glassy
cross
cross-off
cross-on
cross
cross-off
glassy
cross
cross-off
High Tide
6:45PM3.29m
7:12AM3.12m
7:29PM3.16m
8:01AM3.03m
8:22PM2.99m
9:00AM2.92m
9:28PM2.82m
10:14AM2.85m
10:51PM2.72m
11:39AM2.88m
00:21AM2.76m
12:59PM3.03m
1:36AM2.92m
Low Tide
12:30PM0.78m
00:57AM0.73m
1:14PM0.89m
1:42AM0.85m
2:06PM1.03m
2:36AM1.00m
3:12PM1.17m
3:46AM1.14m
4:37PM1.24m
5:10AM1.19m
6:07PM1.17m
6:33AM1.11m
7:22PM0.98m
part cloud
part cloud
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:30
6:31
6:31
6:33
6:35
6:35
6:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:51
8:50
8:49
8:47
8:45
8:45
8:44
 mm
Temp °C
21
21
19
22
22
20
22
21
19
25
25
21
22
22
18
22
22
19
22
22
19
Feels °C
20
23
21
22
23
21
19
17
17
22
21
19
21
20
17
21
21
19
22
22
20
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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