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Surf Forecasts:
Mundaka surf forecast from 18 Aug 2026:
- Best quality surf: Thursday 20 Aug, 8AM (local time) - 3.5ft (1.1m), 12s period, NW swell with cross-offshore winds.
- Most powerful swell: Friday 21 Aug, 5AM (local time) - 5ft (1.6m), 10s period, NW swell with 527 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 5AM (local time) - 3ft (0.9m), 12s 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 Thursday (Aug 20) at 5AM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.1m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Mundaka in the next 16 days are 1.6m 10s and forecast to arrive on Friday (Aug 21) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 4s period and expected on Tuesday (Aug 25) at 5PM.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 20th Aug) | 3ft (0.9m) 12s |
| Best Surf | 8AM (Thu 20th Aug) | 3.5ft (1.1m) 12s |
| Most Powerful | 5AM (Fri 21st Aug) | 5ft (1.6m) 10s |
Table - best surf conditions forecast for Mundaka over the next 16 days.
The Lowdown
Alright, let’s talk surf. Rusty here, breaking it down for you.
Right off the bat, Mundaka is the spot, and the water’s sitting at about 76°F, which is a solid 5°F warmer than what’s typical for this time of year – feels nice when you’re sitting out there, but the waves? They’re not playing nice for a while.
From Tuesday the 18th all the way through to the 26th, it’s a tough run. The first day gives you a 2ft swell from the NNW with a short 8-second period and barely any energy (35). The wind is cross-onshore, so it’s choppy and messy. Wednesday the 19th drops to 1.0ft and 12 energy. Honestly, you’re looking at flat or blown-out conditions every day. Swell sizes bounce between 0.7ft and 6ft, but the wind is always cross, onshore, or just straight ugly. The only brief flicker is on the 20th with a 4ft NW swell showing 303 energy, but it’s cross-shore wind and considered marginal. For a spot like this, it’s a slow stretch.
But if you can hold out, there’s one morning that redeems the whole forecast. Thursday the 27th of August. That’s your session. The swell hits 7ft from the NW with a 10-second period and strong energy (753). The wind goes glassy – SSE at just 3 mph, and it’s cross-offshore. That means the wave will be clean, lined up, and holding that classic Mundaka shape. At 7ft, it’s for the experienced crew only. This is the standout of the whole 16 days. The swell direction is right on the money for this break.
After that, Friday the 28th morning has 4ft from the NW with an 8-second period and weaker energy (196), but again the wind is glassy – just a light air. It’ll be surfable but nothing special compared to the 27th. The rest of the run to the 2nd of September is back to smaller, shorter-period swell with onshore or cross winds. Not worth rushing out for.
So, the first week and a half is a bust. The one to circle is the 27th. That’s where the magic might happen.
Rusty
Short Range ForecastLight rain (total 6mm), mostly falling on Thu night. Warm (max 23°C on Tue afternoon, min 18°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 39mm), heaviest during Sat morning. Warm (max 21°C on Fri afternoon, min 16°C on Mon morning). Wind will be generally light. | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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) | NNW 8 | NW 7 | NNW 6 | WNW 8 | NW 13 | NW 11 | NNW 10 | NW 11 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 8 | NW 7 | NW 7 | NW 7 | NW 7 | NW 6 | NNW 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 35 | 7 | 6 | 6 | 134 | 303 | 354 | 445 | 509 | 509 | 388 | 230 | 194 | 187 | 107 | 91 | 104 | 63 | 47 | 25 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | cross-on | cross | cross | on | cross-on | cross | cross-on | glassy | cross-on | on | cross | cross-on | cross-on | cross-off | cross | cross-on | cross-off |
High Tide | 9:13PM3.17m | 9:33AM3.00m | 9:57PM2.85m | 10:21AM2.77m | 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 | |||||||
Low Tide | 2:57PM0.64m | 3:20AM0.81m | 3:43PM0.93m | 4:07AM1.10m | 4:39PM1.19m | 5:07AM1.33m | 5:56PM1.36m | 6:31AM1.44m | 7:27PM1.36m | 7:56AM1.37m | 8:39PM1.20m | 8:57AM1.17m | 9:31PM0.97m | |||||||
 |  | | | |  | |  |  | |  |  | |  | | | | | | | |
 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — | 7:22 | — | — | 7:22 | — | — | 7:24 | — | — |
 | — | 9:09 | — | — | 9:07 | — | — | 9:07 | — | — | 9:05 | — | — | 9:02 | — | — | 9:01 | — | — | 9:00 |
mm | — | — | — | — | — | — | — | 4 | 2 | 3 | — | 15 | 11 | 5 | 2 | 2 | — | 1 | — | — |
Temp °C | 23 | 22 | 21 | 23 | 22 | 22 | 22 | 19 | 20 | 21 | 21 | 17 | 17 | 18 | 18 | 20 | 20 | 19 | 21 | 20 |
Feels °C | 23 | 22 | 23 | 23 | 23 | 22 | 22 | 17 | 18 | 19 | 20 | 17 | 15 | 17 | 17 | 18 | 18 | 16 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | NNW 8 | NNW 5 | NNW 6 | NNW 5 | NW 13 | NW 11 | NNW 10 | NW 11 | NW 10 | NW 10 | NW 10 | NW 9 | — | NW 8 | NW 7 | NW 7 | NW 7 | NW 7 | NW 6 | NNW 6 |
| kJ | 35 | 5 | 6 | 3 | 134 | 303 | 354 | 445 | 509 | 509 | 388 | 230 | — | 187 | 107 | 91 | 104 | 63 | 47 | 25 |
Swell 2 Height (m) Direction Period (s) | — | NW 7 | WNW 8 | WNW 8 | NW 7 | — | — | — | — | — | — | — | — | — | — | — | — | W 8 | W 8 | N 9 |
| kJ | — | 7 | 6 | 6 | 23 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 |
Swell 3 Height (m) Direction Period (s) | — | WNW 8 | — | NW 11 | W 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 10 | W 7 |
| kJ | — | 6 | — | 5 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 1 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | NW 9 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 194 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 519 | 501 | 404 | 519 | 4 | 19 | 109 | 34 | 43 | 60 | 0 | 2 | 2 | 4 | 49 | 414 | 0 | 226 | 109 | 87 |
Best forecast wave conditions in Pais Vasco | ||||||||||||||||||||
Best forecast wave conditions in Spain (Europe) | ||||||||||||||||||||
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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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