Surf Forecasts:
Mablethorpe surf forecast from 12 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 10PM (local time) - 2.5ft (0.7m), 9s period, N swell with offshore winds.
- Most powerful swell: Thursday 17 Sep, 4AM (local time) - 2.5ft (0.8m), 10s period, N swell with 115 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 10PM (local time) - 2.5ft (0.7m), 9s period with N swell.
Best Forecast Surf Conditions for Mablethorpe this week:
The surf forecast for Mablethorpe over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 16) at 10PM. The primary swell is predicted to be 0.7m and 9s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Mablethorpe in the next 16 days are 0.8m 10s and forecast to arrive on Thursday (Sep 17) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (Sep 19) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 16th Sep) | 2.5ft (0.7m) 9s |
| Best Surf | 10PM (Wed 16th Sep) | 2.5ft (0.7m) 9s |
| Most Powerful | 4AM (Thu 17th Sep) | 2.5ft (0.8m) 10s |
Table - best surf conditions forecast for Mablethorpe over the next 16 days.
The Lowdown
Alright, let me have a look at what's shaping up here. I'm Rusty, and I've been surfing these parts long enough to know when to bother waxing the board.
First up, the water temp at Mablethorpe – we're talking 64°F and it's much warmer than normal for this time of year. That's a bit of a trip, feels more like late summer than mid-September.
Now, honest truth: this outlook is a tough one. For the first week and a half, it's pretty much a write-off. We're looking at flat to tiny, messy wind, and just poor conditions all round. From Saturday the 12th right through to Monday the 21st, you're chasing shadows. Swell heights barely tickle 2ft, and the wind is mostly cross-off or fresh, which just chops up any hope of a decent ripple. The combined energy is weak, well under 100 (1 to 79), so there's just nothing to ride. It's a long, quiet stretch.
The first real glimmer of hope comes on Tuesday the 22nd of September. The afternoon sees a tiny bump in swell to 3ft, with light offshore wind (3 mph) from the West. The combined energy finally nudges into moderate territory at 123. It's described as "surfable waves but very ordinary conditions". Don't get your hopes up for a classic, but it's the first time you could actually get wet and catch something small and clean.
Then, after another couple of flat, choppy days, Friday the 25th of September morning stands out. Swell hits 3ft from the North, with a period of 10 seconds – not groundswell magic, but a solid little pulse. The wind is light offshore from the SW at 6 mph, and the combined energy jumps to 198, the best all period. The wave state is clean. This is the standout window. It's still small, best for longboards or a fun fish, but it's the cleanest and most energetic surf in the whole 16-day run. Mablethorpe is inconsistent at the best of times, so a morning like this is what you wait for. Crowds are possible here, so get down early.
After that, it fades back into tiny, windy slop for the final days.
So, to wrap it up: the first 10 days are a near-total blank. The single best bet, and the only real highlight, is the morning of Friday the 25th of September. Aim for Mablethorpe with the light offshore wind and that pulse of northerly swell. Everything else is a gamble you'll probably lose.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Mon afternoon, min 14°C on Sat morning). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Tue morning. Warm (max 21°C on Tue afternoon, min 10°C on Thu night). Winds increasing (light winds from the ESE on Wed afternoon, fresh winds from the WNW by Thu morning). | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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) | N 7 | N 6 | — | N 5 | — | N 15 | N 14 | N 13 | N 12 | N 12 | N 11 | N 10 | N 10 | N 5 | N 9 | N 9 | N 9 | N 9 | N 9 | N 9 | NNE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 1 | 0 | 1 | 0 | 4 | 4 | 4 | 12 | 11 | 10 | 9 | 7 | 11 | 110 | 79 | 56 | 38 | 39 | 25 | 26 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | on | cross | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-on | cross-off | cross-off | off | off | off | off | cross-off |
High Tide | 7:46PM5.54m | 7:52AM5.89m | 8:19PM5.48m | 8:27AM5.76m | 8:51PM5.31m | 9:02AM5.50m | 9:22PM5.04m | 9:36AM5.13m | 9:53PM4.71m | 10:12AM4.71m | 10:25PM4.34m | 10:51AM4.25m | 11:05PM3.97m | ||||||||
Low Tide | 1:46PM-0.19m | 1:56AM0.44m | 2:19PM-0.09m | 2:28AM0.44m | 2:50PM0.15m | 2:58AM0.55m | 3:20PM0.50m | 3:29AM0.75m | 3:51PM0.90m | 4:01AM1.04m | 4:23PM1.33m | 4:36AM1.39m | 4:59PM1.74m | ||||||||
 | |  |  | | | | |  |  |  | | | | | | | | | |  | |
 | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — |
 | — | 7:22 | — | — | 7:20 | — | — | 7:17 | — | — | 7:15 | — | — | 7:13 | — | — | 7:10 | — | — | 7:07 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 1 | — | — | — | — | — | — | — |
Temp °C | 20 | 21 | 18 | 18 | 17 | 17 | 23 | 25 | 23 | 20 | 21 | 14 | 16 | 16 | 13 | 16 | 17 | 12 | 17 | 18 | 16 |
Feels °C | 16 | 17 | 16 | 16 | 15 | 15 | 21 | 23 | 22 | 16 | 16 | 10 | 13 | 15 | 9 | 10 | 10 | 7 | 12 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | — | — | — | N 5 | — | NNE 4 | NNE 5 | NNE 5 | N 12 | N 12 | N 11 | N 10 | N 10 | N 5 | N 9 | N 9 | N 9 | N 9 | N 9 | N 9 | NNE 9 |
| kJ | — | — | — | 1 | — | 2 | 2 | 2 | 12 | 11 | 10 | 9 | 7 | 11 | 110 | 79 | 56 | 38 | 39 | 25 | 26 |
Swell 2 Height (m) Direction Period (s) | N 7 | N 6 | — | — | — | N 6 | — | N 13 | NE 5 | — | — | — | — | N 9 | — | — | SSW 4 | — | — | — | — |
| kJ | 1 | 1 | — | — | — | 1 | — | 4 | 1 | — | — | — | — | 6 | — | — | 3 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | N 15 | N 14 | — | N 6 | — | SE 4 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 4 | 4 | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 3 | WSW 3 | — | — | — | SE 3 | — | — | — | SW 3 | WNW 3 | NW 3 | N 5 | — | W 2 | SW 3 | W 3 | W 3 | W 3 | — | SSW 2 |
| kJ | 3 | 6 | — | — | — | 2 | — | — | — | 4 | 3 | 2 | 12 | — | 1 | 3 | 2 | 2 | 1 | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 498 | 437 | 317 | 325 | 384 | 279 | 425 | 422 | 467 | 325 | 653 | 350 | 318 | 220 | 6 | 145 | 218 | 106 | 137 | 219 | 866 |
Best forecast wave conditions in Lincolnshire | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Mablethorpe Surf forecast
The above surf forecast table for Mablethorpe provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mablethorpe can be found by selecting the local surf guide option on the grey menu. Our Mablethorpe 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 (Mablethorpe) 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 Mablethorpe 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.
Mablethorpe is 20 km (12 miles) from Skegness. If you plan a holiday in Lincolnshire, look for hotels and other accommodation in Skegness. Skegness has rooms for a wide range of budgets as well as car hire and transport links.
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