Surf Forecasts:
Mablethorpe surf forecast from 16 Aug 2026:
- Best quality surf: Saturday 22 Aug, 7AM (local time) - 4ft (1.2m), 8s period, N swell with offshore winds.
- Most powerful swell: Saturday 22 Aug, 7AM (local time) - 4ft (1.2m), 8s period, N swell with 200 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 4AM (local time) - 3ft (0.9m), 8s period with NNE 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 0.9m 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 1.2m 8s and forecast to arrive on Saturday (Aug 22) at 7AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Aug 18) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 22nd Aug) | 3ft (0.9m) 8s |
| Best Surf | 7AM (Sat 22nd Aug) | 4ft (1.2m) 8s |
| Most Powerful | 7AM (Sat 22nd Aug) | 4ft (1.2m) 8s |
Table - best surf conditions forecast for Mablethorpe over the next 16 days.
The Lowdown
Rusty here again. Let’s talk about what’s on offer for Mablethorpe. The forecast is looking pretty flat for the most part, but we do have a couple of windows where you might get a knee-to-waist high dribble if you're desperate.
First up, the water temp is sitting around 69°, which is much warmer than normal for this time of year – almost 8° above average. That’s a very unusual little warm spell, so you won't be needing the 5/4 quite yet.
The overall pattern is grim. For the first week and a half, the swell is tiny. We're looking at a long stretch of days from the 16th right through to the 24th of August where the waves are just too small to be worth paddling out for. The combined wave energy is mostly in the single digits or low double digits, which is weak stuff. It’s not until the morning of Saturday the 22nd that you’ll finally see something that breaks the 3-foot mark, but even then, it’s 3ft from the North with an 8-second period and light offshore wind from the WNW (10 km/h). That morning is your first real chance at a surfable, if very ordinary, wave. The energy jumps to a moderate 144. After that, it’s back to the small stuff and onshore winds.
The only slight standout, and I’m using that term loosely, is the morning of Saturday the 22nd of August. The swell is 3ft from the North, period is a weak 8 seconds, but you’ve got that light offshore wind from the WNW at 10 km/h keeping things clean. The break itself is inconsistent and only fairly exposed, so don't expect much. The energy is moderate at 144. For a beginner spot, that 3ft is manageable.
Sunday the 23rd of August morning has a tiny 3ft from the NNE with glassy conditions (ENE 5 km/h) and only 90 energy. It’s clean but knee-high. You could practice your pop-up, I guess.
From Monday the 24th onwards, we’re back to chop and onshore winds. The last bet is the morning of Saturday the 30th of August – 2ft from the North with a light cross-shore (NNE 10 km/h) and 56 energy. Not worth planning your week around.
To be blunt, there’s no real “best” option here. The surf quality is rated as poor for almost the entire 16-day window. If you have a longboard and zero expectations, the Saturday 22nd morning is your best (only) shot. Otherwise, leave the boards in the car.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Sun night. Warm (max 22°C on Tue afternoon, min 13°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu afternoon. Very mild (max 19°C on Wed morning, min 12°C on Thu night). Winds decreasing (fresh winds from the WSW on Wed afternoon, light winds from the NW by Fri night). | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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 9 | N 9 | NNE 4 | N 8 | N 8 | N 8 | N 4 | NNE 6 | NNE 6 | NNE 8 | NNE 7 | NNE 8 | NNE 8 | N 8 | NNE 6 | NNE 6 | N 8 | NNE 8 | N 8 | NNE 8 | NNE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 6 | 2 | 1 | 1 | 4 | 2 | 4 | 8 | 22 | 18 | 12 | 12 | 21 | 64 | 66 | 163 | 112 | 144 | 147 | 126 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | glassy | cross | on | cross | off | off | off | off | off | cross-off | off | off | cross-off | cross-off | cross | cross | off | on | on |
High Tide | 9:29PM5.17m | 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 | ||||||||
Low Tide | 3:24PM0.03m | 3:31AM0.76m | 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 | ||||||||
 |  |  | | |  | | |  | | |  | |  | | | | | | | | |
 | 5:39 | — | — | 5:41 | — | — | 5:43 | — | — | 5:43 | — | — | 5:46 | — | — | 5:48 | — | — | 5:48 | — | — |
 | — | 8:24 | — | — | 8:22 | — | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — | — | 8:14 | — | — | 8:12 | — |
mm | — | — | 5 | — | — | 6 | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 15 | 16 | 16 | 17 | 21 | 22 | 18 | 19 | 19 | 17 | 17 | 18 | 15 | 15 | 14 | 14 | 17 | 16 | 16 |
Feels °C | 17 | 16 | 15 | 16 | 14 | 15 | 16 | 17 | 14 | 12 | 12 | 14 | 12 | 15 | 10 | 9 | 8 | 11 | 15 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | NNE 4 | N 4 | NNE 4 | N 8 | N 8 | N 8 | N 4 | NNE 6 | NNE 6 | NNE 8 | NNE 7 | NNE 8 | NNE 8 | — | — | N 8 | NNE 8 | NNE 8 | — | — | NNE 9 |
| kJ | 2 | 2 | 2 | 1 | 1 | 4 | 1 | 4 | 8 | 22 | 18 | 12 | 12 | — | — | 13 | 99 | 112 | — | — | 126 |
Swell 2 Height (m) Direction Period (s) | N 9 | N 9 | N 8 | — | — | — | N 8 | N 8 | — | N 8 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 6 | 6 | 1 | — | — | — | 1 | 1 | — | 12 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | NE 6 | — | N 8 | — | — | — | N 8 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 2 | — | 1 | — | — | — | 5 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SE 3 | WSW 2 | NW 3 | WNW 3 | WNW 3 | W 3 | SW 3 | WSW 3 | N 8 | NNE 6 | NNE 6 | N 8 | — | N 8 | NNE 8 | — |
| kJ | — | — | — | — | — | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 3 | 21 | 64 | 66 | 163 | — | 144 | 147 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 433 | 544 | 457 | 457 | 500 | 582 | 384 | 1200 | 222 | 137 | 274 | 298 | 149 | 446 | 350 | 319 | 220 | 87 | 0 | 220 | 49 |
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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