Surf Forecasts:
Mablethorpe surf forecast from 17 Aug 2026:
- Most powerful swell: Friday 21 Aug, 4AM (local time) - 4.5ft (1.3m), 8s period, N swell with 223 kJ wave energy.
Best Forecast Surf Conditions for Mablethorpe this week:
The most powerful waves expected at Mablethorpe in the next 16 days are 1.3m 8s and forecast to arrive on Friday (Aug 21) 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 0.5m 3s period and expected on Tuesday (Aug 18) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Fri 21st Aug) | 4.5ft (1.3m) 8s |
Table - best surf conditions forecast for Mablethorpe over the next 16 days.
The Lowdown
Alright, surf is gonna be real quiet for a while. We're looking at a stretch of tiny, weak waves for the next several days, so don't get your hopes up just yet. It's not until Saturday the 22nd that things start to get interesting, and even then it's not huge.
We're talking about Mablethorpe here. It's a beach break that's inconsistent, so we need the conditions to line up. Right now, the water is a toasty 69°, which is much warmer than normal for this time of year, so at least it'll be comfortable while you're waiting for a set.
The first real chance of anything decent arrives on the morning of Saturday the 22nd. We've got a light offshore breeze from the northwest, creating clean conditions. Swell is a small 4ft from the north with a period of 8 seconds, and the combined energy is moderate at 291. It’s not going to be epic, but it's the best on offer. The wind stays clean into the afternoon, but turns onshore from the east, so the morning is your window. It's still not big, so if you're just getting into it, this could be a decent one to try.
After that, it drops back off again. There is a tiny bump of 2ft on Sunday the 23rd morning with light offshore wind, but the energy is weak, only 67. It's surfable, but pretty ordinary. The afternoon turns glassy, but the swell fades.
Then we're in for another flat spell. Small, short-period junk is all we get for the next few days. The middle of the week, from the 24th to the 27th, is really poor. There is a little pulse on Friday the 28th, but a storm blows in with rain and strong cross-onshore winds, just messing things up.
Looking further out, there's another small window around Saturday the 29th. The morning has fresh offshore winds and a tiny 1ft swell. It’s not much, but clean. The afternoon sees a bit of a bump to 3ft from the southeast, but the period is a short 4 seconds, so it'll be weak and lumpy.
Honestly, the long-range stuff is promising but not much to get excited about. The forecast for Sunday the 30th shows strong winds, but they're offshore and it'll be hard to paddle into the tiny waves.
So, there you have it. Keep your expectations low for the next couple of weeks. The standout is Saturday the 22nd, and maybe a quick one on the morning of Sunday the 23rd if you're keen. It's the kind of forecast where you have to be in the right place at the right time.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Mon night. Warm (max 21°C on Tue morning, min 13°C on Tue night). Winds increasing (calm on Sun night, fresh winds from the WNW by Tue afternoon). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Thu afternoon. Very mild (max 18°C on Thu morning, min 13°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
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 5 | N 8 | N 8 | NNE 7 | NNE 8 | N 8 | N 5 | N 8 | NNE 8 | N 7 | N 8 | N 7 | NNE 7 | N 7 | N 7 | N 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 1 | 4 | 1 | 4 | 5 | 11 | 18 | 10 | 19 | 63 | 71 | 120 | 178 | 156 | 135 | 114 | 52 | 39 | 26 | 23 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | cross | off | off | off | off | off | cross-off | off | cross | cross-off | cross-off | cross | cross | cross | on | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:34AM5.53m | 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 | — | — | 4 | — | — | — | — | — | 1 | 1 | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 17 | 21 | 21 | 17 | 19 | 20 | 17 | 18 | 16 | 14 | 16 | 15 | 14 | 16 | 15 | 15 | 19 | 21 | 18 |
Feels °C | 18 | 15 | 16 | 16 | 15 | 14 | 13 | 14 | 14 | 16 | 11 | 9 | 10 | 9 | 11 | 12 | 12 | 12 | 16 | 19 | 16 |
Swell 1 Height (m) Direction Period (s) | N 8 | N 8 | N 8 | N 8 | N 7 | N 5 | N 8 | N 8 | NNE 7 | NNE 8 | — | — | — | — | NNE 8 | NNE 8 | NNE 7 | NNE 7 | N 7 | N 7 | N 7 |
| kJ | 1 | 1 | 4 | 1 | 4 | 5 | 11 | 18 | 10 | 19 | — | — | — | — | 96 | 81 | 67 | 52 | 39 | 26 | 23 |
Swell 2 Height (m) Direction Period (s) | — | — | — | N 5 | — | N 7 | — | — | — | S 4 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 1 | — | 4 | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | N 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SE 3 | W 3 | WNW 3 | — | W 3 | WSW 2 | — | SW 3 | N 8 | N 5 | N 8 | NNE 8 | N 7 | N 8 | N 7 | — | — | — | — |
| kJ | — | — | 1 | 1 | 3 | — | 1 | 1 | — | 2 | 63 | 71 | 120 | 178 | 156 | 135 | 114 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 457 | 544 | 646 | 325 | 582 | 266 | 485 | 457 | 342 | 50 | 444 | 278 | 351 | 220 | 114 | 87 | 338 | 49 | 87 | 118 | 50 |
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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