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Surf Forecasts:
Mundaka surf forecast from 15 Sep 2026:
- Best quality surf: Friday 18 Sep, 11PM (local time) - 8ft (2.5m), 14s period, NW swell with glassy winds.
- Most powerful swell: Friday 18 Sep, 8PM (local time) - 8ft (2.4m), 15s period, NNW swell with 2,646 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 8AM (local time) - 2.5ft (0.8m), 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 Tuesday (Sep 15) at 8AM. The primary swell is predicted to be 0.8m and 10s period with a secondary swell of 0.3m and 4s. 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 2.4m 15s and forecast to arrive on Friday (Sep 18) at 8PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 15th Sep) | 2.5ft (0.8m) 10s |
| Best Surf | 11PM (Fri 18th Sep) | 8ft (2.5m) 14s |
| Most Powerful | 8PM (Fri 18th Sep) | 8ft (2.4m) 15s |
Table - best surf conditions forecast for Mundaka over the next 16 days.
The Lowdown
Hey, Rusty here with the inside line on Mundaka. We’ve got a bit of a slow start, but a couple of proper windows in the forecast that are worth circling on the calendar.
The first real action that gets me talking is Thursday the 17th in the morning. We’re seeing a head-high plus groundswell coming in from the NW at about 5 feet, with a 11-second period. The combined wave energy is solid at (606). It’s a little lumpy with a light onshore breeze, so not perfect, but the power is there. The afternoon backs off a touch.
The first true standout is Saturday the 19th. The morning looks insane. That NW swell jumps to a solid 7 feet with a long 13-second period. That’s a heavy, powerful groundswell, and the energy is maxing out at (1599). With a light cross-shore breeze, the wave will be clean. Look, this is a world-class river mouth, and at that size with that period, it’s going to be critical. This is expert-only territory. It’ll be a beast.
Then the real magic – Sunday the 20th morning. The wind goes dead calm, glassy conditions, with a clean 4-5 foot NW swell on an 11-second period. That’s a dream combo. The energy is still pumping at (519), but the size is way more user-friendly. The wave will be a smooth, peeling machine.
Monday the 21st morning is another cracker. We get a clean cross-offshore wind from the East with a solid 4-5 foot swell and a 12-second period. Lined-up, powerful, and clean with energy at (581). Tuesday the 22nd morning also sees a glassy start with a smaller but clean 4-foot swell at a 12-second period and (404) energy.
For the second week, circle Thursday the 24th morning. Cross-offshore breezes and a clean 5-foot NW swell with a long 13-second period. The energy is back up at (762), setting up another day of proper Mundaka waves.
The forecast ends on a high note with the morning of the 30th of September. Glassy conditions, a solid 6-foot NW swell, and an 11-second period. Energy at (698) makes this another one to watch, but it’s a ways off so don’t lock it in just yet.
The takeaway? For the big dogs, Saturday the 19th and Thursday the 24th are your power days. For the best chance at a perfect, manageable wave, get out there on the glassy Sunday the 20th or the clean Monday the 21st. Just remember, when it’s on at Mundaka, it’s always busy, so plan your paddle accordingly.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Tue night. Warm (max 22°C on Tue afternoon, min 17°C on Thu night). Winds decreasing (fresh winds from the WNW on Tue afternoon, light winds from the N by Thu morning). | Days 4-6 Weather SummarySome drizzle, heaviest during Fri afternoon. Warm (max 21°C on Sun afternoon, min 15°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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) | NW 10 | WNW 6 | NW 6 | NNW 7 | NW 8 | NW 10 | NW 11 | NW 11 | NW 10 | NW 9 | NNW 16 | NW 14 | NW 13 | NW 13 | NW 12 | NW 11 | NW 11 | NW 10 | NW 12 | NW 12 | NW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 90 | 283 | 75 | 185 | 295 | 334 | 606 | 487 | 305 | 138 | 921 | 2519 | 1599 | 1249 | 706 | 515 | 414 | 341 | 570 | 599 | 647 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | on | on | on | cross-on | cross-on | cross-on | cross | cross-off | on | glassy | cross | cross-on | off | glassy | cross-on | cross-off | cross-off | cross-on | cross-off |
High Tide | 7:54PM3.40m | 8:08AM3.29m | 8:29PM3.10m | 8:44AM3.04m | 9:08PM2.80m | 9:27AM2.79m | 10:03PM2.53m | 10:34AM2.57m | 11:36PM2.37m | 12:24PM2.50m | 1:28AM2.42m | 1:56PM2.65m | 2:35AM2.62m | ||||||||
Low Tide | 1:41PM0.37m | 1:59AM0.56m | 2:19PM0.64m | 2:35AM0.86m | 3:01PM0.93m | 3:18AM1.15m | 3:54PM1.21m | 4:16AM1.40m | 5:12PM1.41m | 5:47AM1.52m | 6:54PM1.41m | 7:23AM1.43m | 8:11PM1.23m | ||||||||
 | |  |  |  | |  | |  | | |  | | | | | | | | | | |
 | 7:48 | — | — | 7:50 | — | — | 7:50 | — | — | 7:52 | — | — | 7:52 | — | — | 7:54 | — | — | 7:56 | — | — |
 | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — | — | 8:15 | — | — | 8:14 | — | — | 8:13 | — | — | 8:10 | — |
mm | — | — | 3 | 2 | 1 | 2 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 22 | 20 | 19 | 20 | 19 | 19 | 20 | 19 | 18 | 18 | 18 | 17 | 19 | 18 | 18 | 21 | 20 | 22 | 24 | 21 |
Feels °C | 19 | 19 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 16 | 16 | 17 | 17 | 18 | 17 | 19 | 21 | 19 | 21 | 22 | 21 |
Swell 1 Height (m) Direction Period (s) | NW 10 | WNW 12 | NW 11 | NNW 7 | NW 8 | NW 10 | NW 11 | NW 11 | NW 10 | NW 9 | NW 9 | NW 14 | NW 13 | NW 13 | NW 12 | NW 11 | NW 11 | NW 10 | NW 12 | NW 12 | NW 13 |
| kJ | 90 | 15 | 75 | 185 | 295 | 334 | 606 | 487 | 305 | 138 | 423 | 2519 | 1599 | 1249 | 706 | 515 | 414 | 341 | 570 | 599 | 647 |
Swell 2 Height (m) Direction Period (s) | NNE 4 | — | W 8 | NW 9 | — | NW 12 | — | — | — | NW 6 | NNW 16 | — | — | — | — | NE 4 | — | — | N 5 | — | — |
| kJ | 1 | — | 1 | 71 | — | 178 | — | — | — | 50 | 921 | — | — | — | — | 4 | — | — | 11 | — | — |
Swell 3 Height (m) Direction Period (s) | NW 13 | — | W 8 | — | — | — | — | — | — | NW 12 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 7 | — | 1 | — | — | — | — | — | — | 39 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 3 | WNW 6 | NW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 4 | — | — | NE 4 | — |
| kJ | 5 | 283 | 69 | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | — | 16 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 175 | 250 | 22 | 60 | 2 | 25 | 2 | 2 | 25 | 0 | 2 | 0 | 2 | 2 | 0 | 0 | 2 | 0 | 0 | 2 | 0 |
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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