
Surf Forecasts:
Mundaka surf forecast from 13 Sep 2026:
- Best quality surf: Saturday 19 Sep, 5AM (local time) - 7.5ft (2.3m), 14s period, NW swell with cross-offshore winds.
- Most powerful swell: Friday 18 Sep, 11PM (local time) - 7.5ft (2.3m), 15s period, NW swell with 2,215 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 8AM (local time) - 3.5ft (1.1m), 13s 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 Sunday (Sep 13) at 8AM. The primary swell is predicted to be 1.1m and 13s period with a secondary swell of 0.4m and 4s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Mundaka in the next 16 days are 2.3m 15s and forecast to arrive on Friday (Sep 18) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (CEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sun 13th Sep) | 3.5ft (1.1m) 13s |
| Best Surf | 5AM (Sat 19th Sep) | 7.5ft (2.3m) 14s |
| Most Powerful | 11PM (Fri 18th Sep) | 7.5ft (2.3m) 15s |
Table - best surf conditions forecast for Mundaka over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s brewing for Mundaka.
First thing – there’s a bit of a lull before things get good. The first real standout doesn’t hit until Sunday, September 20th, but there are a few sessions before that if you’re keen and flexible.
The water’s sitting at 73°, which is much warmer than usual – nearly three degrees above the norm, so you’ll be comfy in a spring suit or even a shorty.
Sunday morning, September 13th, kicks off with glassy conditions – a light ESE breeze at 3 mph, and a clean 4ft swell from the NW with a 13-second period. The combined swell energy is moderate at 546. Not a standout, but a nice start.
Then things get messy. From Monday the 14th through Saturday the 19th, it’s mostly cross-onshore winds, choppy seas, and short-period slop. Tuesday the 15th sees energy drop to just 99 – barely a ripple. Wednesday the 16th is onshore and ugly. Thursday the 17th has some size but the wind’s all wrong. Friday the 18th morning cleans up a little with a light cross-offshore breeze, but the swell’s only 3ft and the energy is weak at 200 – just ordinary.
Now, Sunday, September 20th morning is where it starts to get real. Glassy conditions, ESE wind at 3 mph, and a solid 6ft NW swell with a 12-second period. Energy is 977 – moderate but building. This one’s for the competent crew.
Monday, September 21st morning is the big one. We’re looking at 7ft from the NW with a 14-second period and energy surging to 1811 – that’s strong. The wind is light and cross-shore from the west at 6 mph. This is expert territory at that size, but Mundaka’s river mouth setup handles long-period groundswell beautifully. It’ll be powerful, lined up, and world-class.
Wednesday, September 23rd morning is another glassy beauty – 5ft from the NNW with a 12-second period, no wind at all, and energy at 734. Perfect for a more mellow session if the big days are too much.
Then Friday, September 25th morning brings offshore wind from the SSE at 3 mph, 6ft from the NNW with a 13-second period, and energy at 904. Clean and lined up.
The standout without question is Monday, September 21st morning. That 7ft NW swell with 14-second period and 1811 energy, paired with light cross-shore wind, is the pick of the entire forecast. Sunday the 20th morning is a close second – slightly smaller but glassy, which is a rare treat.
Mundaka is an expert wave, consistent, and often crowded. It’s fairly exposed to the NW swell, and the optimum direction is NW, so everything lines up perfectly.
After the 25th, the wind shifts onshore again and conditions go downhill through the end of September. So mark your calendar: from Sunday the 20th to Friday the 25th is the window, and Monday the 21st is the one to circle.
Rusty out.
Short Range ForecastSome drizzle, heaviest during Tue night. Warm (max 26°C on Mon afternoon, min 16°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Wed morning. Warm (max 20°C on Thu afternoon, min 16°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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 13 | NW 12 | NW 12 | NW 12 | NW 11 | NW 10 | NW 10 | WNW 5 | NW 5 | NW 7 | NW 8 | NW 9 | NW 11 | NW 11 | NW 10 | NW 9 | NNW 16 | NW 14 | NW 13 | NW 13 | NW 13 |
Wave Graph | |||||||||||||||||||||
543 | 471 | 463 | 376 | 220 | 141 | 90 | 100 | 42 | 143 | 242 | 300 | 558 | 487 | 273 | 159 | 709 | 2095 | 1502 | 1249 | 851 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | off | cross | cross-on | cross-off | cross | cross | cross-on | on | cross-on | on | cross-on | cross-on | cross | cross-off | cross-on | cross | cross | cross-on | glassy |
High Tide | 6:47PM3.89m | 7:04AM3.68m | 7:21PM3.67m | 7:36AM3.51m | 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 | ||||||||
Low Tide | 12:29PM0.01m | 00:51AM0.07m | 1:05PM0.15m | 1:24AM0.29m | 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 | ||||||||
7:47 | — | — | 7:48 | — | — | 7:48 | — | — | 7:50 | — | — | 7:50 | — | — | 7:52 | — | — | 7:52 | — | — | |
— | 8:24 | — | — | 8:22 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — | — | 8:15 | — | — | 8:14 | — | |
mm | — | — | — | — | — | — | — | — | 1 | 1 | — | 1 | — | — | — | 1 | 1 | — | — | — | — |
Temp °C | 19 | 22 | 21 | 22 | 26 | 23 | 22 | 23 | 21 | 19 | 19 | 19 | 19 | 20 | 19 | 17 | 19 | 19 | 17 | 19 | 18 |
Feels °C | 19 | 21 | 21 | 21 | 23 | 22 | 20 | 21 | 20 | 17 | 17 | 18 | 18 | 18 | 18 | 15 | 19 | 18 | 17 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | NW 13 | NW 12 | NW 12 | NW 12 | NW 11 | NW 10 | NW 10 | WNW 12 | NW 11 | NW 7 | NW 8 | NW 9 | NW 11 | NW 11 | NW 10 | NW 9 | NNW 16 | NW 14 | NW 13 | NW 13 | NW 13 |
543 | 471 | 463 | 376 | 220 | 141 | 90 | 14 | 42 | 143 | 242 | 300 | 558 | 487 | 273 | 159 | 709 | 2095 | 1502 | 1249 | 851 | |
Swell 2 Height (m) Direction Period (s) | NNE 4 | — | NNE 4 | NNE 4 | — | NNE 4 | NNE 4 | — | NW 9 | NW 9 | NNE 6 | NW 12 | — | — | — | NNW 19 | NW 9 | — | — | — | — |
3 | — | 2 | 3 | — | 2 | 1 | — | 27 | 71 | 33 | 212 | — | — | — | 35 | 183 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | NW 13 | — | WNW 8 | — | — | — | — | — | — | NW 12 | NW 12 | — | — | — | — |
— | — | — | — | — | — | 7 | — | 6 | — | — | — | — | — | — | 6 | 114 | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NE 4 | — | — | NE 4 | — | W 2 | WNW 5 | NW 5 | NNE 6 | — | — | — | — | — | — | — | — | — | — | — |
— | 4 | — | — | 4 | — | 1 | 100 | 38 | 41 | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 2 | 0 | 2 | 2 | 0 | 49 | 480 | 109 | 60 | 2 | 2 | 2 | 2 | 25 | 0 | 2 | 2 | 2 | 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.










