Surf Forecasts:
Mewslade Bay surf forecast from 27 Aug 2026:
- Best quality surf: Monday 31 Aug, 1AM (local time) - 5ft (1.5m), 8s period, WSW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 10PM (local time) - 7ft (2.1m), 9s period, WSW swell with 734 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 1AM (local time) - 5ft (1.5m), 8s period with WSW swell.
Best Forecast Surf Conditions for Mewslade Bay this week:
The surf forecast for Mewslade Bay over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 31) at 1AM. The primary swell is predicted to be 1.5m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Mewslade Bay in the next 16 days are 2.1m 9s and forecast to arrive on Saturday (Aug 29) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (Aug 27) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 31st Aug) | 5ft (1.5m) 8s |
| Best Surf | 1AM (Mon 31st Aug) | 5ft (1.5m) 8s |
| Most Powerful | 10PM (Sat 29th Aug) | 7ft (2.1m) 9s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's take a look at what's on the menu for Mewslade Bay over the next couple of weeks.
Right off the bat, it's a rough start. The first few days are a write-off with poor, choppy conditions and tiny dribbles of swell. Honestly, there's nothing worth paddling out for until we hit the tail end of the period. There's a long stretch of flat, messy days where the wind is just ruining everything. Hold your horses.
The first real glimmer of hope shows up on Monday, 7th September. The morning session is where it's at. We’ve got a clean 6ft swell rolling in from the west, but the real story is the light cross-off wind from the NNW. It's going to be glassy, clean, and the waves will have some shape. The combined swell energy is moderate at 403, so there's a bit of push behind it. This is definitely the standout for the whole forecast. The afternoon holds up too, with a clean 6ft swell from the west and a gentle breeze, so you can get a solid session in.
Now, look ahead to Friday, 11th September. This one is for the experienced crew only. The swell jumps up to 8ft from the WSW with a massive 1009 combined energy reading – that's a lot of power. The wind is offshore from the north, light at 10 mph, so the conditions will be clean. This is proper, heavy stuff. If you're not an expert, stay on the beach for this one.
As for the water, it's about average for the time of year, so nothing to fuss about on that front.
So, to wrap it up: the first week is a total washout. Don't bother. Your best bet is Monday, 7th September for a clean, fun day out. If you've got the skills and the nerve, the 11th of September is a big, powerful swell for the experts.
Rusty.
Short Range ForecastHeavy rain (total 31mm), heaviest during Fri night. Warm (max 21°C on Wed night, min 17°C on Thu night). Winds increasing (light winds from the ESE on Wed night, strong winds from the SSW by Fri night). | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Mon night. Very mild (max 18°C on Sun morning, min 16°C on Sat night). Winds decreasing (fresh winds from the WNW on Sat night, calm by Sun night). | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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) | W 7 | W 7 | SW 7 | SW 6 | SW 7 | SW 7 | SW 7 | SW 8 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WSW 10 | WSW 9 | WSW 8 | W 8 | WSW 8 | WSW 5 | WSW 6 | WSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 10 | 4 | 35 | 144 | 255 | 178 | 275 | 418 | 658 | 360 | 222 | 267 | 270 | 416 | 218 | 55 | 34 | 51 | 83 | 107 | 440 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross | cross-on | on | glassy | cross | cross | cross-on | cross-on | cross | cross-off | glassy | cross-on | cross-on |
High Tide | 6:42AM7.30m | 6:58PM7.78m | 7:15AM7.75m | 7:31PM8.20m | 7:48AM8.10m | 8:03PM8.47m | 8:20AM8.30m | 8:36PM8.58m | 8:54AM8.35m | 9:11PM8.50m | 9:30AM8.21m | 9:48PM8.23m | 10:08AM7.90m | 10:28PM7.78m | |||||||
Low Tide | 12:49PM1.17m | 1:10AM0.90m | 1:21PM0.77m | 1:41AM0.55m | 1:52PM0.48m | 2:11AM0.34m | 2:22PM0.33m | 2:42AM0.28m | 2:54PM0.34m | 3:14AM0.38m | 3:28PM0.51m | 3:49AM0.66m | 4:06PM0.85m | ||||||||
 |  |  |  |  |  | | |  | |  | | | | | | |  | | | | |
 | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — |
 | — | 8:15 | — | — | 8:13 | — | — | 8:10 | — | — | 8:08 | — | — | 8:07 | — | — | 8:04 | — | — | 8:01 | — |
mm | 3 | — | 4 | 6 | 1 | 7 | 7 | 2 | — | 2 | 2 | 1 | — | — | 4 | 3 | — | — | — | — | — |
Temp °C | 18 | 19 | 18 | 17 | 18 | 18 | 18 | 18 | 17 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 18 | 17 | 15 | 17 | 18 |
Feels °C | 16 | 18 | 17 | 14 | 15 | 15 | 14 | 12 | 11 | 16 | 16 | 15 | 16 | 12 | 14 | 12 | 14 | 13 | 12 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | W 7 | W 7 | W 9 | W 9 | — | — | — | — | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WSW 10 | WSW 9 | WSW 6 | W 8 | SW 16 | W 8 | W 16 | SW 15 |
| kJ | 10 | 4 | 1 | 1 | — | — | — | — | 658 | 360 | 222 | 267 | 270 | 416 | 218 | 37 | 34 | 10 | 5 | 5 | 9 |
Swell 2 Height (m) Direction Period (s) | SW 6 | SW 7 | S 12 | — | — | — | — | — | — | — | — | — | W 11 | — | — | WSW 8 | SW 18 | SW 16 | SW 16 | — | — |
| kJ | 2 | 2 | 3 | — | — | — | — | — | — | — | — | — | 9 | — | — | 55 | 12 | 10 | 10 | — | — |
Swell 3 Height (m) Direction Period (s) | SW 12 | — | W 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 6 | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 3 | — | SW 7 | SW 6 | SW 7 | SW 7 | SW 7 | SW 8 | — | — | — | — | — | W 10 | — | — | WSW 6 | WSW 8 | WSW 5 | WSW 6 | WSW 7 |
| kJ | 3 | — | 35 | 144 | 255 | 178 | 275 | 418 | — | — | — | — | — | 339 | — | — | 25 | 51 | 83 | 107 | 440 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 332 | 172 | 146 | 214 | 322 | 281 | 193 | 130 | 33 | 68 | 141 | 0 | 1 | 138 | 195 | 244 | 322 | 1 | 0 | 311 | 322 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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