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Surf Forecasts:
Mundaka surf forecast from 20 Aug 2026:
- Best quality surf: Friday 21 Aug, 11PM (local time) - 5ft (1.6m), 10s period, NW swell with glassy winds.
- Most powerful swell: Friday 21 Aug, 11AM (local time) - 6ft (1.8m), 10s period, NW swell with 650 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 11PM (local time) - 5ft (1.6m), 10s period with NW swell.
Best Forecast Surf Conditions for Mundaka this week:
The surf forecast for Mundaka over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 11PM. The primary swell is predicted to be 1.6m and 10s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Mundaka in the next 16 days are 1.8m 10s and forecast to arrive on Friday (Aug 21) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (Aug 27) at 11AM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Fri 21st Aug) | 5ft (1.6m) 10s |
| Best Surf | 11PM (Fri 21st Aug) | 5ft (1.6m) 10s |
| Most Powerful | 11AM (Fri 21st Aug) | 6ft (1.8m) 10s |
Table - best surf conditions forecast for Mundaka over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cookin’ for Mundaka over the next couple of weeks.
Straight off the bat, I gotta be honest with you – this is a tough run. We’re looking at a solid stretch of flat, poor, or just plain messy conditions for the first week or so. From Friday the 21st right through to the morning of Friday the 28th, it’s a real struggle. The swell is tiny, the wind is mostly cross or onshore, and even when it’s clean, there’s just no energy to work with. You’ll see a few mornings with gentle offshore breezes, like Sunday the 23rd morning with a 2ft swell from the NW (period 7 seconds) and a clean cross-offshore wind, but the wave height is barely a ripple. The combined energy is a weak 67 during that session. It’s not going to get your heart racing.
Then, finally, we get a glimmer. Friday morning, the 28th of August, is the standout of the whole forecast. The swell jumps to 7ft from the NW with a period of 10 seconds, and the wind is light and cross-offshore from the WSW. That’s a proper recipe for Mundaka’s famous river-mouth wave. The combined energy is a solid 934, which is moderate to strong, and the forecast says “expect very good surf conditions.” This is the one you want to be on. The water temp is about average for this time of year.
Now, a word of caution: 7ft is solid, and with a 10-second period, that’s a groundswell that will hold its shape. But it’s also a wave that’s only for experienced surfers at that size. The river mouth can get heavy, and the crowd is often a factor here. Expect some company.
The afternoon of the 28th stays big at 8ft, but the wind swings cross-onshore from the NW, making it a bit lumpy. It’s still a big wave, but the quality drops. Saturday the 29th and Sunday the 30th see the swell drop back to 4-4ft, but Sunday morning is absolutely glassy from the east. That’s a clean, small-wave session for the longboard or a fun fish.
After that, it’s back to the doldrums. The first week of September is mostly flat with weak, onshore wind. The only real highlight is the 28th of August morning. That’s your window. Don’t sleep on it.
Rusty.
Short Range ForecastModerate rain (total 15mm), heaviest on Thu night. Warm (max 27°C on Sun afternoon, min 17°C on Sat morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sun night. Warm (max 32°C on Mon afternoon, min 20°C on Sun night). Mainly fresh winds. | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 11 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 8 | NW 7 | NE 6 | NNE 5 | NNE 5 | N 6 | N 5 | NW 13 | N 4 | NW 8 | NW 6 | WNW 8 | NW 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 538 | 650 | 614 | 425 | 230 | 129 | 91 | 54 | 54 | 24 | 8 | 24 | 5 | 7 | 19 | 132 | 21 | 42 | 64 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | glassy | cross | cross-on | off | cross-off | cross-on | cross-off | off | on | off | cross-off | on | cross-off | off | on | glassy |
High Tide | 10:55PM2.59m | 11:31AM2.59m | 00:25AM2.45m | 1:08PM2.56m | 2:01AM2.50m | 2:30PM2.70m | 3:06AM2.67m | 3:23PM2.93m | 3:50AM2.89m | 4:04PM3.17m | 4:25AM3.10m | 4:38PM3.40m | 4:58AM3.29m | ||||||
Low Tide | 5:07AM1.33m | 5:56PM1.36m | 6:31AM1.44m | 7:27PM1.36m | 7:56AM1.37m | 8:39PM1.20m | 8:57AM1.17m | 9:31PM0.97m | 9:42AM0.93m | 10:11PM0.72m | 10:20AM0.69m | 10:45PM0.49m | |||||||
 | | |  |  | |  | | |  | |  | | | | | |  | | |
 | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — | 7:24 | — | — | 7:26 | — | — | 7:26 | — | — |
 | 9:07 | — | — | 9:05 | — | — | 9:02 | — | — | 9:01 | — | — | 9:00 | — | 8:59 | — | — | 8:57 | — |
mm | 7 | 4 | 2 | — | — | — | 1 | 1 | — | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 21 | 21 | 20 | 23 | 22 | 22 | 27 | 23 | 25 | 32 | 27 | 25 | 25 | 22 | 27 | 29 | 23 |
Feels °C | 19 | 17 | 18 | 19 | 18 | 20 | 20 | 22 | 25 | 23 | 25 | 31 | 29 | 23 | 24 | 22 | 25 | 28 | 22 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 8 | NW 7 | NW 7 | NNE 5 | NNE 5 | NW 10 | N 5 | WNW 4 | NNW 12 | NW 8 | NW 6 | WNW 8 | NW 9 |
| kJ | 538 | 650 | 614 | 425 | 230 | 129 | 91 | 54 | 26 | 24 | 8 | 4 | 5 | 2 | 14 | 132 | 16 | 42 | 64 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | NE 5 | NE 5 | W 8 | NW 7 | NNW 7 | — | NNW 6 | NW 13 | NW 8 | — | WNW 7 | NW 9 | — |
| kJ | — | — | — | — | — | — | 30 | 12 | 1 | 13 | 4 | — | 4 | 7 | 3 | — | 21 | 22 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 8 | W 12 | W 9 | N 6 | — | NW 9 | N 5 | W 8 | — | NW 10 | NW 11 | — |
| kJ | — | — | — | — | — | — | — | 1 | 3 | 2 | 3 | — | 3 | 1 | 1 | — | 15 | 5 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NE 4 | — | — | NE 6 | — | — | N 6 | — | — | N 4 | — | — | NNE 3 | — |
| kJ | — | — | — | — | — | 18 | — | — | 54 | — | — | 24 | — | — | 19 | — | — | 2 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 25 | 28 | 60 | 0 | 20 | 2 | 0 | 2 | 92 | 24 | 260 | 282 | 260 | 226 | 109 | 0 | 3 | 2 | 2 |
Best forecast wave conditions in Pais Vasco | |||||||||||||||||||
Best forecast wave conditions in Spain (Europe) | |||||||||||||||||||
Header Global | |||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mundaka surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Mundaka Surf forecast
The above surf forecast table for Mundaka provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mundaka can be found by selecting the local surf guide option on the grey menu. Our Mundaka 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 (Mundaka) 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 Mundaka 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.
Mundaka is 2 km (1 miles) from Bermeo. If you plan a holiday in Pais Vasco, look for hotels and other accommodation in Bermeo. Bermeo has rooms for a wide range of budgets as well as car hire and transport links.
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