Surf Forecasts:
Mablethorpe surf forecast from 20 Aug 2026:
- Best quality surf: Saturday 22 Aug, 4AM (local time) - 4.5ft (1.4m), 8s period, N swell with cross-offshore winds.
- Most powerful swell: Friday 21 Aug, 4PM (local time) - 5ft (1.5m), 8s period, N swell with 273 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 4AM (local time) - 4.5ft (1.4m), 8s 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 Saturday (Aug 22) at 4AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 1.0m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Mablethorpe in the next 16 days are 1.5m 8s and forecast to arrive on Friday (Aug 21) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Aug 26) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 22nd Aug) | 4.5ft (1.4m) 8s |
| Best Surf | 4AM (Sat 22nd Aug) | 4.5ft (1.4m) 8s |
| Most Powerful | 4PM (Fri 21st Aug) | 5ft (1.5m) 8s |
Table - best surf conditions forecast for Mablethorpe over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a proper look at what’s on the table for the Mablethorpe stretch over the next couple of weeks.
Right off the bat, I gotta be straight with you – this is a tough run. The 16-day window is mostly a flat spell with barely a ripple worth paddling for. There’s a long gap from now until Thursday, the 22nd of August, with almost nothing to get excited about. The first few days are a write-off: tiny, onshore, messy. We’re talking about a weak energy reading of just 11 (combined energy of all swells directed here) on Thursday the 20th – that’s barely a wobble.
Things tease a little on Friday the 23rd of August. The morning shows a light north wind, cross-off, and surfable but very ordinary waves around 2 ft from the NNE with a 9-second period. The energy is still weak at 77. It’s clean, but it’s not going to win any awards. Saturday the 24th is a non-event with onshore winds and even smaller surf.
The one standout – and I mean the *only* one worth circling on your calendar – is Wednesday morning, the 2nd of September. Finally, something with a bit of punch. We’re looking at a north swell, 5 ft, with an 8-second period, and the combined energy is a solid 458 – that’s moderate energy, and the biggest we’ll see. The wind is light from the northwest, giving us a clean, cross-off setup. This is the best on offer, and it’s the only time we see a score of 2 out of 10. The swell direction from the north is right on the money for Mablethorpe’s optimum. It’s still a beach break, and with 5 ft, it’s a bit much for beginners, but for the rest of us, this is the morning to get out there. Keep in mind this is over a week away, so the long-range forecast is promising but not locked in.
After that, the surf drops off again quickly. The rest of the window is a mix of tiny, weak, onshore slop and strong offshore winds that make it hard to paddle into. The combined energy drops back to 63 and below.
Water temperature is about average for the time of year, nothing unusual to report.
So there you have it. Saddle up for the 2nd of September morning, and don’t hold your breath for the rest.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Thu morning. Very mild (max 18°C on Thu morning, min 12°C on Thu night). Winds increasing (light winds from the WNW on Wed night, fresh winds from the N by Fri morning). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Sun morning, min 14°C on Sat night). Winds increasing (calm on Sun night, fresh winds from the E by Tue morning). | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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) | NNE 7 | N 8 | N 6 | N 7 | N 8 | N 8 | N 8 | NNE 8 | NNE 8 | NNE 9 | NNE 8 | NNE 8 | N 7 | NNE 6 | E 5 | E 6 | ENE 6 | E 6 | SSE 5 | S 4 | SSE 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 11 | 40 | 78 | 131 | 273 | 157 | 131 | 116 | 96 | 77 | 68 | 44 | 24 | 14 | 34 | 120 | 80 | 83 | 48 | 6 | 13 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | on | glassy | cross-off | on | cross-on | on | on | on | on | on | cross-on | cross | on | on |
High Tide | 11:42AM4.29m | 00:12AM3.91m | 12:45PM3.91m | 1:25AM3.68m | 2:13PM3.71m | 2:55AM3.67m | 3:40PM3.76m | 4:09AM3.89m | 4:45PM3.98m | 5:03AM4.24m | 5:34PM4.27m | 5:44AM4.63m | 6:13PM4.57m | ||||||||
Low Tide | 5:18AM1.55m | 5:48PM1.69m | 6:05AM1.86m | 6:42PM2.05m | 7:12AM2.13m | 8:06PM2.26m | 9:03AM2.18m | 9:56PM2.18m | 10:39AM1.91m | 11:02PM1.89m | 11:32AM1.51m | 11:45PM1.56m | 12:11PM1.09m | 00:20AM1.25m | |||||||
 | |  |  | |  |  | | |  | | | | | | | | | | |  | |
 | 5:46 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — |
 | — | 8:16 | — | — | 8:14 | — | — | 8:12 | — | — | 8:09 | — | — | 8:07 | — | — | 8:05 | — | — | 8:02 | — |
mm | 3 | 1 | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 |
Temp °C | 18 | 16 | 14 | 15 | 15 | 14 | 17 | 15 | 16 | 18 | 17 | 17 | 17 | 16 | 16 | 17 | 18 | 19 | 23 | 24 | 22 |
Feels °C | 15 | 12 | 10 | 9 | 9 | 10 | 15 | 11 | 14 | 15 | 13 | 14 | 14 | 12 | 12 | 12 | 13 | 19 | 22 | 22 | 19 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | — | — | — | — | — | N 8 | NNE 8 | NNE 8 | NNE 9 | NNE 8 | NNE 8 | N 7 | NNE 6 | NNE 6 | N 7 | N 7 | N 11 | ENE 6 | ENE 6 | ENE 7 |
| kJ | 11 | — | — | — | — | — | 131 | 116 | 96 | 77 | 68 | 44 | 24 | 14 | 7 | 1 | 1 | 2 | 30 | 4 | 4 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 12 | — | N 10 | ESE 5 | N 10 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | 2 | 3 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 10 | NE 5 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — |
Wind waves Height (m) Direction Period (s) | — | N 8 | N 6 | N 7 | N 8 | N 8 | — | — | — | — | — | — | — | E 3 | E 5 | E 6 | ENE 6 | E 6 | SSE 5 | S 4 | SSE 4 |
| kJ | — | 40 | 78 | 131 | 273 | 157 | — | — | — | — | — | — | — | 5 | 34 | 120 | 80 | 83 | 48 | 6 | 13 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 220 | 582 | 278 | 350 | 220 | 87 | 0 | 156 | 0 | 0 | 529 | 101 | 457 | 400 | 544 | 433 | 504 | 75 | 50 | 164 | 314 |
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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