Surf Forecasts:
Mablethorpe surf forecast from 13 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 4AM (local time) - 2.5ft (0.7m), 8s period, N swell with 58 kJ wave energy.
Best Forecast Surf Conditions for Mablethorpe this week:
The most powerful waves expected at Mablethorpe in the next 16 days are 0.7m 8s 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 0.7m 6s period and expected on Wednesday (Sep 16) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Thu 17th Sep) | 2.5ft (0.7m) 8s |
Table - best surf conditions forecast for Mablethorpe over the next 16 days.
The Lowdown
Morning crew, Rusty here. Right now, it’s flat—proper flat—and it’s going to stay that way for a long stretch. From Sunday the 13th through to Monday the 21st, there’s barely anything on the surf front. We’re talking waves under half a metre, mostly with weak 4–11 second periods and combined swell energy that barely scrapes past 44. There’s a few clean moments—like Monday morning the 14th with a light offshore breeze—but there’s simply no swell behind it. If you paddle out, you’ll be bobbing around doing nothing.
Then around Tuesday the 22nd, things start to wake up a little. The swell jumps to 1.0m–1.1m out of the north, period 8–10 seconds, and the combined energy climbs to 115–239. The winds are cross-off or clean, so it might actually look decent from the beach, but the surf quality is still rated poor. It’s weak, short-period stuff that will crumble and lack push.
The one real standout—and honestly, the only morning worth setting an alarm for—is Wednesday the 23rd. That morning, Mablethorpe gets 1.2m from the north with an 8-second period and combined energy of 285. With a light NNW cross-off breeze, it should be clean and might have a few fun little ramps. It’s still only marginal, but compared to everything else, it’s the best on offer. The afternoon, though, the wind swings north and cross-shore, bumping up some chop on the 0.9m waves.
After that, it slips away again. Thursday the 24th and Friday the 25th drop back to half a metre or less; by the weekend of the 26th and 27th we’re back to tiny, choppy cross-onshore junk with weak periods. The following Monday the 28th is even worse—just 0.3m to 0.4m with messy, cross-shore conditions and no energy.
So there it is—one window, that Wednesday morning the 23rd. It’s not a classic, but if you’re beginner-friendly and desperate, that’s your shot. The water’s sitting around 18°, which is a touch warmer than normal for this time of year—nice if you do get wet.
Otherwise, don’t force it. Blank runs like this happen in this part of the world. Forecasts can change, but as it stands, it’s not looking tasty.
Rusty out.
Short Range ForecastSome drizzle, heaviest during Tue morning. Warm (max 25°C on Mon afternoon, min 12°C on Tue night). Winds increasing (calm on Sun morning, fresh winds from the W by Tue afternoon). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Fri night. Very mild (max 18°C on Fri afternoon, min 11°C on Wed night). Winds increasing (calm on Wed afternoon, fresh winds from the SSW by Fri night). | ||||||||||||||||||||
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) | — | — | N 15 | N 14 | N 13 | N 12 | N 12 | N 11 | N 11 | N 10 | N 6 | N 7 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 4 | 4 | 4 | 12 | 11 | 9 | 9 | 2 | 27 | 52 | 44 | 36 | 21 | 19 | 18 | 11 | 5 | 5 | 2 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | off | cross-off | off | off | off | off | cross-off | off | off | off |
High Tide | 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 | 11:45AM3.81m | 00:12AM3.64m | ||||||||
Low Tide | 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 | 5:19AM1.77m | 5:48PM2.12m | ||||||||
 | |  |  | | |  | | |  | |  |  | | | | |  | | | | |
 | 6:26 | — | — | 6:28 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — |
 | — | 7:20 | — | — | 7:17 | — | — | 7:15 | — | — | 7:13 | — | — | 7:10 | — | — | 7:07 | — | — | 7:06 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | 1 | — | — | — | — | 3 | — | — | — |
Temp °C | 17 | 16 | 18 | 22 | 25 | 20 | 20 | 19 | 14 | 16 | 15 | 13 | 16 | 17 | 13 | 16 | 18 | 17 | 19 | 19 | 15 |
Feels °C | 17 | 14 | 18 | 21 | 22 | 17 | 15 | 13 | 9 | 12 | 12 | 9 | 12 | 11 | 9 | 10 | 13 | 12 | 12 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | N 5 | N 12 | SSE 4 | N 11 | N 11 | N 10 | N 10 | N 7 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 9 |
| kJ | — | — | — | — | 2 | 12 | 1 | 9 | 9 | 2 | 2 | 52 | 44 | 36 | 21 | 19 | 18 | 11 | 5 | 5 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | N 5 | — | N 13 | — | N 12 | S 4 | — | — | — | — | — | SSW 4 | — | — | — | — | SE 5 | — | — |
| kJ | — | — | 1 | — | 4 | — | 11 | 1 | — | — | — | — | — | 5 | — | — | — | — | 1 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | N 15 | N 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 4 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SE 3 | — | — | SSW 2 | SW 3 | W 3 | WNW 3 | NW 6 | N 6 | W 2 | SSW 3 | W 3 | W 3 | W 3 | W 3 | SW 3 | SW 3 | WSW 3 | WSW 3 |
| kJ | — | — | 1 | — | — | 1 | 3 | 2 | 8 | 37 | 27 | 1 | 3 | 4 | 2 | 2 | 3 | 3 | 8 | 6 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 446 | 384 | 402 | 459 | 422 | 467 | 653 | 653 | 444 | 350 | 93 | 6 | 213 | 222 | 106 | 317 | 485 | 656 | 585 | 563 | 384 |
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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