
Surf Forecasts:
Mewslade Bay surf forecast from 12 Jul 2026:
- Most powerful swell: Thursday 16 Jul, 7PM (local time) - 1.5ft (0.4m), 8s period, SW swell with 23 kJ wave energy.
Best Forecast Surf Conditions for Mewslade Bay this week:
The most powerful waves expected at Mewslade Bay in the next 16 days are 0.4m 8s and forecast to arrive on Thursday (Jul 16) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Monday (Jul 13) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Thu 16th Jul) | 1.5ft (0.4m) 8s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
Alright, Rusty here, checking in with a look at what we’ve got coming down the line for Mewslade Bay.
Right off the bat, it’s a tough stretch. For the next two weeks, we are looking at a whole lot of flat or near-flat conditions, with nothing that’s really going to get the heart pumping. Waves are tiny, generally below 1ft, and while the wind is often light or offshore keeping the water clean, there’s just no energy to make it worth paddling out. We do see periods of glassy conditions, particularly on the afternoon of Tuesday, July 14th with a westerly breeze and a tiny 0.7ft swell, but that’s it – just a pretty lake with no push.
The first real sign of life doesn’t show up until Thursday, July 23rd. The morning offers up a clean 3ft swell (combined energy of 90) with a light north wind blowing cross-off. It’s a small, clean, and surfable wave, but it’s very ordinary. Not a standout, but at least you won’t be sitting on the sand.
The only true standout, and I mean the only one to circle on your calendar, comes on Monday, July 27th. The early part of that day is the winner. The forecast shows a glassy 10ft swell from the WSW with a moderate period of 9 seconds. The combined energy is a massive 2358, so there’s real power behind it. The wind is glassy and light from the NE, which means it will be clean. But here’s the catch – at 10ft, this is for experienced surfers only. Beginners should sit this one out. This is a big, powerful, clean swell, but it’s a late call so don't lock it in just yet. The afternoon takes a turn as the wind shifts onshore, so the window is the morning session.
Overall, it’s a pretty desperate outlook until that one potential morning. For the 16-day window, the 27th of July is really the only day that demands attention.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Sun afternoon, min 15°C on Sun night). Winds decreasing (fresh winds from the ENE on Sun night, calm by Tue afternoon). | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Fri afternoon. Warm (max 23°C on Wed night, min 17°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sun 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | W 21 | W 16 | SW 20 | SW 19 | SW 15 | W 11 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | SW 8 | SW 7 | SW 7 | SW 7 | SW 6 | SW 6 | SW 6 | W 8 | W 8 |
Wave Graph | |||||||||||||||||||||
10 | 5 | 15 | 15 | 8 | 12 | 12 | 10 | 19 | 16 | 16 | 8 | 11 | 19 | 16 | 16 | 14 | 6 | 6 | 5 | 4 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross | glassy | cross-off | cross-off | cross | cross-off | cross | cross-on | glassy | cross-off | cross | off | cross |
High Tide | 5:17PM7.41m | 5:48AM7.57m | 6:15PM7.91m | 6:43AM7.97m | 7:07PM8.37m | 7:34AM8.27m | 7:56PM8.68m | 8:21AM8.40m | 8:42PM8.78m | 9:06AM8.34m | 9:27PM8.66m | 9:50AM8.11m | 10:10PM8.34m | 10:33AM7.74m | |||||||
Low Tide | 11:30PM1.21m | 11:58AM1.06m | 00:29AM0.76m | 12:52PM0.68m | 1:22AM0.39m | 1:42PM0.41m | 2:11AM0.18m | 2:28PM0.29m | 2:57AM0.17m | 3:13PM0.36m | 3:41AM0.35m | 3:56PM0.60m | 4:24AM0.69m | ||||||||
— | — | 5:13 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | |
— | 9:30 | — | — | 9:30 | — | — | 9:29 | — | — | 9:28 | — | — | 9:27 | — | — | 9:25 | — | — | 9:24 | 9:23 | |
mm | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | 7 | — | — | — | — | — |
Temp °C | 30 | 25 | 23 | 28 | 24 | 25 | 29 | 26 | 22 | 22 | 23 | 22 | 23 | 21 | 21 | 18 | 18 | 22 | 23 | 22 | 21 |
Feels °C | 26 | 18 | 19 | 26 | 18 | 23 | 26 | 21 | 22 | 23 | 22 | 22 | 21 | 20 | 19 | 17 | 17 | 20 | 21 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | SW 20 | SW 19 | W 12 | W 11 | WSW 11 | WSW 10 | WSW 10 | E 3 | WSW 9 | WSW 8 | SW 8 | SW 7 | SW 7 | SW 7 | SW 6 | SW 6 | SW 6 | SW 6 | W 8 |
1 | 1 | 15 | 15 | 3 | 10 | 12 | 10 | 19 | 2 | 16 | 7 | 11 | 19 | 16 | 16 | 14 | 6 | 6 | 1 | 4 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | W 16 | SW 15 | SW 15 | SW 15 | SW 18 | SW 18 | SW 14 | SW 16 | WSW 9 | SW 6 | SSW 6 | W 8 | W 9 | W 8 | W 8 | W 8 | W 8 | W 6 | W 8 | SW 6 |
10 | 5 | 8 | 8 | 8 | 12 | 12 | 7 | 10 | 16 | 1 | 3 | 6 | 6 | 5 | 5 | 5 | 5 | 2 | 5 | 1 | |
Swell 3 Height (m) Direction Period (s) | W 21 | — | W 8 | W 8 | W 8 | SW 14 | SW 14 | S 6 | SW 6 | SW 7 | SW 16 | SW 14 | SW 14 | SW 15 | SW 12 | SW 13 | SW 13 | W 13 | W 8 | W 5 | SW 6 |
9 | — | 1 | 1 | 1 | 8 | 7 | 1 | 2 | 2 | 10 | 8 | 8 | 8 | 6 | 7 | 7 | 3 | 5 | 2 | 1 | |
Wind waves Height (m) Direction Period (s) | E 4 | E 4 | E 4 | E 4 | E 4 | E 3 | E 4 | E 4 | E 3 | — | ESE 3 | — | — | — | — | SW 3 | — | — | NW 3 | NNW 4 | NNW 4 |
10 | 46 | 28 | 16 | 28 | 6 | 6 | 26 | 3 | — | 2 | — | — | — | — | 1 | — | — | 8 | 15 | 2 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 403 | 360 | 419 | 126 | 118 | 54 | 66 | 125 | 180 | 78 | 326 | 181 | 66 | 172 | 299 | 299 | 54 | 180 | 358 | 48 | 64 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
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Information about the Mewslade Bay Surf forecast
The above surf forecast table for Mewslade Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mewslade Bay can be found by selecting the local surf guide option on the grey menu. Our Mewslade Bay 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 (Mewslade Bay) 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 Mewslade Bay 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.
Mewslade Bay is 25 km (16 miles) from Swansea. If you plan a holiday in Wales - Gower, look for hotels and other accommodation in Swansea. Swansea has rooms for a wide range of budgets as well as car hire and transport links.











