Mablethorpe Surf Forecast and Surf Report

Alright, grab a coffee, let’s have a proper look at this run. To be straight with you, Mablethorpe is not exactly firing across this 16-day window. The first real chance of anything worth paddling out for doesn’t show until Wednesday the 9th of September, and even then, it’s a bit of a slow burner. Before that, we’re looking at a solid gap of about 6 days where the swell is barely a ripple. There are a few morning sessions with clean conditions, but the height is just too small to get excited about.

Now, the first time we see some proper juice is on the 9th of September. Wednesday morning brings a modest bump in swell, around 3 ft from the NNE, but the real standout is the wind. We’ve got a fresh cross-offshore breeze keeping the face clean. The combined energy ticks up to a moderate 112, so there’s a bit of push behind it, but it's still on the smaller side. That period sits around 8 seconds, so it’s a bit of a short-period wind swell – it’ll be a little playful but nothing too meaty.

Then on Tuesday the 15th and into Wednesday the 16th, you start to see something building. The morning of the 16th is still small at 3 ft, but by Wednesday afternoon we’re up to 3 ft from the north with a period of 7 seconds and steady offshore winds. The combined energy is 81 – still moderate. It’s surfable, but it’s ordinary. Nothing to write home about.

The best bet in this whole window lands on Thursday the 17th of September. Thursday morning brings the biggest swell we see: 5 ft from the NNE, with a 9-second period, and a moderate cross-offshore breeze. That combined energy jumps to a solid 311, which is in the strong range. This is the session to target. The size is still manageable for most intermediate surfers, but strong enough for a bit of a push. The wind keeps it reasonably clean. After that, it drops back down, with Friday the 18th offering a tiny 3 ft and glassy conditions in the morning, but the energy is weak.

The water temperature here sits at 66°F, which is 6°F warmer than the long-term average. That’s very unusual for this time of year, so you’ll be in for a surprisingly warm paddle, especially if you hit that Thursday session. Crowds at Mablethorpe are listed as “sometimes,” so you might see a few others out, but it’s not going to be a zoo.

If you’re a beginner, that Thursday swell is pushing over 5 ft, so it might be a little too much. Stick to the smaller glassy mornings on the 11th or the 18th for a mellow paddle. For the experts, none of this really gets over 8 ft, so it’s not a big-wave day.

Overall, hold out for Thursday the 17th of September. That’s your best window. Don’t get too excited about the rest.

Rusty

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