Surf Forecasts:
Mablethorpe surf forecast from 17 Aug 2026:
- Best quality surf: Saturday 22 Aug, 7AM (local time) - 3.5ft (1.1m), 8s period, N swell with cross-offshore winds.
- Most powerful swell: Saturday 22 Aug, 1AM (local time) - 4.5ft (1.3m), 8s period, N swell with 223 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 7AM (local time) - 3.5ft (1.1m), 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 7AM. The primary swell is predicted to be 1.1m and 8s period. 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 1.3m 8s and forecast to arrive on Saturday (Aug 22) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Tuesday (Aug 18) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sat 22nd Aug) | 3.5ft (1.1m) 8s |
| Best Surf | 7AM (Sat 22nd Aug) | 3.5ft (1.1m) 8s |
| Most Powerful | 1AM (Sat 22nd Aug) | 4.5ft (1.3m) 8s |
Table - best surf conditions forecast for Mablethorpe over the next 16 days.
The Lowdown
Alright, let's get into it. Mablethorpe has a pretty quiet stretch ahead. The water is sitting at 69°F, which is about 8°F warmer than usual for this time of year – that's a proper anomaly, so you'll feel that warm bath when you get in.
Honestly, the first week and a half is looking flat. From Monday the 17th to Saturday the 23rd, we're seeing tiny swell, mostly under 3ft, and the combined energy is barely whispering (1 to 134 units). The wind is a mixed bag – a few offshore moments on Tuesday the 18th and Wednesday the 19th, but the swell is just too small to do anything with. It's a real desert period.
We get a little lift on Saturday the 22nd with 3ft from the NNE and a light WNW cross-off on Sunday the 23rd, but again, the energy is weak (60 units) and the period is short (7 seconds). Not worth paddling out for.
The next real chance shows up on Saturday the 29th of August. Afternoon sees a jump to 4ft from the north, with a 7-second period and a moderate offshore wind from the west (16 mph). The combined energy hits 128 units, which is the strongest we see in the whole forecast. The conditions are clean, but it's still a short-period swell, so expect a bit of a bumpy, soft wave. It's surfable, but nothing to get excited about. The morning of the 29th has 3ft from the NNE with a 4-second period and offshore winds, but that's just a weak, crumbly wave.
After that, Sunday the 30th has a tiny 3ft from the south with offshore wind, but again, the period is only 4 seconds – it's a wash.
The rest of the run into September is more of the same: tiny swell, mostly clean winds but no real energy. The forecast is a long, slow grind of flatness. The 29th of August afternoon is the only window that even registers on the radar, and even then, it's a very ordinary day.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Warm (max 21°C on Tue morning, min 13°C on Wed night). Winds increasing (calm on Mon morning, fresh winds from the W by Tue afternoon). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Thu afternoon. Very mild (max 18°C on Thu morning, min 12°C on Fri night). Mainly fresh winds. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 8 | N 8 | N 8 | N 8 | N 7 | N 6 | N 7 | N 8 | NNE 7 | NNE 8 | N 5 | N 6 | N 8 | NNE 8 | N 8 | N 8 | NNE 8 | NNE 8 | NNE 8 | NNE 7 | NNE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 1 | 4 | 4 | 4 | 6 | 8 | 10 | 10 | 19 | 53 | 92 | 161 | 197 | 223 | 165 | 159 | 107 | 75 | 73 | 60 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | off | off | off | off | off | off | off | cross | cross-off | cross | cross | cross-off | cross-off | cross-on | cross-off | cross | cross-on | on |
High Tide | 10:05PM4.90m | 10:13AM5.15m | 10:42PM4.58m | 10:54AM4.72m | 11:22PM4.23m | 11:42AM4.29m | 00:12AM3.91m | 12:45PM3.91m | 1:25AM3.68m | 2:13PM3.71m | 2:55AM3.67m | 3:40PM3.76m | |||||||||
Low Tide | 3:59PM0.38m | 4:05AM0.97m | 4:33PM0.81m | 4:40AM1.24m | 5:08PM1.26m | 5:18AM1.55m | 5:48PM1.69m | 6:05AM1.86m | 6:42PM2.05m | 7:12AM2.13m | 8:06PM2.26m | 9:03AM2.18m | 9:56PM2.18m | ||||||||
 |  |  | | |  | | |  |  | | | |  |  | | | | | | | |
 | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:46 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — |
 | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — | — | 8:14 | — | — | 8:12 | — | — | 8:09 | — |
mm | — | — | 3 | — | — | — | — | — | 1 | 1 | 2 | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 16 | 17 | 21 | 21 | 17 | 20 | 21 | 19 | 18 | 16 | 15 | 15 | 15 | 14 | 16 | 16 | 17 | 17 | 16 | 15 |
Feels °C | 17 | 15 | 15 | 16 | 15 | 13 | 15 | 15 | 17 | 15 | 12 | 12 | 9 | 9 | 9 | 13 | 12 | 14 | 13 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | N 8 | N 8 | N 8 | N 8 | N 7 | N 6 | N 7 | N 8 | NNE 7 | NNE 8 | — | — | — | — | N 8 | — | — | NNE 8 | NNE 8 | NNE 7 | NNE 8 |
| kJ | 1 | 1 | 4 | 4 | 4 | 6 | 8 | 10 | 10 | 19 | — | — | — | — | 140 | — | — | 107 | 75 | 73 | 60 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | N 6 | N 8 | NW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | N 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | WNW 3 | NW 3 | — | W 3 | WSW 2 | — | — | N 5 | N 6 | N 8 | NNE 8 | N 8 | N 8 | NNE 8 | — | — | — | — |
| kJ | — | — | — | 2 | 4 | — | 2 | 1 | — | — | 53 | 92 | 161 | 197 | 223 | 165 | 159 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 457 | 500 | 646 | 325 | 582 | 308 | 498 | 50 | 278 | 101 | 525 | 220 | 220 | 220 | 114 | 0 | 144 | 0 | 102 | 338 | 87 |
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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