Mundaka Surf Forecast and Surf Report

Alright folks this is Rusty and I’m looking at the Mundaka stretch over the next couple of weeks. The whole menu here is built around one spot: Mundaka, a river-mouth wave that only works proper for experts. The key thread is that we’ve got swell on the way, but conditions are going to be choosy about when they line up.

For the next few days, don’t get excited—Thursday afternoon the 27th is a write-off with a tiny 2ft WNW windswell and a stiff cross-onshore breeze. The water is sitting at 75°F, which is much warmer than usual for this time of year, but that won’t help the 44 weak energy (44) on offer.

Friday morning the 28th sees a small step up to 4ft from the WNW, still a short 7-second period, but the wind turns light cross-off from the SSW. That’s going to clean it up a little, and combined energy ticks up to moderate (206). It’s surfable but very ordinary. Friday afternoon goes back to poor.

Now Saturday morning the 29th is a standout window. The swell picks up to 5ft from the NW with a 9-second period, and we get glassy conditions—zero wind. That’s the kind of clean lineup you wait for. Combined energy jumps to a moderate 427. This is the best on offer in this whole stretch. It’s still Mundaka, so you’re looking at a fast, hollow river wave that needs expert handling. Crowds are possible here often, so get in early.

Sunday the 30th morning drops back to 4ft NW with a light cross breeze and moderate energy (348), but the tide might mess with it. Afternoon turns choppy as a moderate NNW breeze kicks up. Monday the 31st stays marginal through the morning with 4ft NW, but Monday afternoon has a pulse to 5ft NW, 10-second period, and the wind switches to light onshore from the NNE. It’s a marginal call, but combined energy is strong at 469. Still not glassy though.

Tuesday the 1st of September hangs around 4ft NW with light onshore flow, still marginal. Wednesday the 2nd and Thursday the 3rd drop off hard—below 3ft, poor surf, weak energy down to 61 (Thursday morning is glassy but it’s only 2ft). There’s nothing worth paddling out for through Friday the 4th.

Then we hit a weird one: Saturday the 5th of September. The swell bumps to 3ft NW but with a very long 12-second period, and combined energy is moderate at 225. Sunday the 6th has 4ft NW at 11 seconds, moderate energy at 313, but both days are plagued by onshore and cross winds—poor conditions. That long-period groundswell would usually shape up well at a river mouth like Mundaka, but the wind is ruining it.

From Monday the 7th through Wednesday the 9th, we’re in the 3ft range with marginal to poor conditions. Thursday the 10th morning goes glassy but only 2ft WNW with an 11-second period—surfable but tiny. Friday the 11th is flat and glassy, 1ft, not worth a session.

Honestly, the standout here is Saturday morning the 29th of August: 5ft NW, glassy, moderate energy. That’s the one to aim for. There’s a gap of basically no real surf from the 30th onward, with only short windows of marginal waves. If you’re not in the water on that Saturday morning, you’re waiting a long time.

Keep your eyes on the forecasts—things can change.

Rusty.

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