Surf Forecasts:
Mewslade Bay surf forecast from 14 Aug 2026:
- Best quality surf: Thursday 20 Aug, 10PM (local time) - 2.5ft (0.7m), 6s period, W swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 1AM (local time) - 6ft (1.8m), 7s period, W swell with 358 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 10PM (local time) - 2.5ft (0.7m), 6s period with W 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 Thursday (Aug 20) at 10PM. The primary swell is predicted to be 0.7m and 6s period with a secondary swell of 0.4m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Mewslade Bay in the next 16 days are 1.8m 7s and forecast to arrive on Thursday (Aug 20) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Friday (Aug 21) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 20th Aug) | 2.5ft (0.7m) 6s |
| Best Surf | 10PM (Thu 20th Aug) | 2.5ft (0.7m) 6s |
| Most Powerful | 1AM (Thu 20th Aug) | 6ft (1.8m) 7s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
Short Range ForecastMostly dry. Warm (max 21°C on Fri afternoon, min 15°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Tue night. Very mild (max 18°C on Mon night, min 14°C on Wed night). Mainly fresh winds. | |||||||||||||||||||
Fri 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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 9 | W 8 | WSW 8 | W 8 | W 8 | WSW 7 | WSW 7 | WSW 7 | W 5 | WSW 5 | WSW 4 | W 6 | WSW 6 | WSW 6 | W 6 | WSW 7 | W 7 | W 7 | W 6 | WSW 9 |
Wave Graph | ||||||||||||||||||||
76 | 48 | 22 | 41 | 29 | 18 | 30 | 10 | 29 | 28 | 15 | 94 | 59 | 33 | 114 | 290 | 358 | 163 | 94 | 26 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off |
High Tide | 8:23PM8.94m | 8:44AM8.55m | 9:02PM8.81m | 9:22AM8.35m | 9:40PM8.46m | 9:59AM7.98m | 10:17PM7.94m | 10:35AM7.48m | 10:54PM7.30m | 11:13AM6.91m | 11:35PM6.64m | 11:56AM6.32m | 00:23AM6.02m | |||||||
Low Tide | 2:35AM0.00m | 2:49PM0.14m | 3:12AM0.17m | 3:25PM0.37m | 3:48AM0.53m | 4:02PM0.76m | 4:23AM1.02m | 4:38PM1.28m | 4:59AM1.59m | 5:17PM1.85m | 5:39AM2.19m | 6:04PM2.43m | ||||||||
— | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | |
8:42 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — | — | 8:34 | — | — | 8:31 | — | — | 8:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — |
Temp °C | 21 | 17 | 20 | 20 | 15 | 17 | 18 | 18 | 17 | 17 | 18 | 18 | 17 | 17 | 16 | 17 | 17 | 16 | 17 | 16 |
Feels °C | 20 | 14 | 16 | 15 | 10 | 16 | 15 | 20 | 16 | 14 | 17 | 16 | 13 | 16 | 11 | 11 | 11 | 11 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 8 | WSW 8 | W 8 | W 8 | WSW 7 | WSW 7 | WSW 7 | W 5 | W 8 | W 17 | W 6 | SW 17 | WSW 6 | SW 16 | SW 16 | SW 16 | W 7 | SW 14 | WSW 9 |
76 | 48 | 22 | 41 | 29 | 18 | 10 | 10 | 29 | 5 | 5 | 94 | 11 | 33 | 10 | 10 | 10 | 163 | 8 | 26 | |
Swell 2 Height (m) Direction Period (s) | — | W 11 | WSW 7 | — | W 7 | NNW 3 | — | — | W 7 | SW 18 | — | SW 16 | — | SW 17 | — | — | — | SW 15 | SW 14 | SW 14 |
— | 2 | 11 | — | 28 | 1 | — | — | 1 | 12 | — | 11 | — | 12 | — | — | — | 8 | 8 | 8 | |
Swell 3 Height (m) Direction Period (s) | — | — | W 10 | — | — | — | — | — | W 18 | — | — | — | — | — | — | — | — | — | — | SW 14 |
— | — | 2 | — | — | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — | 8 | |
Wind waves Height (m) Direction Period (s) | — | NNW 3 | N 4 | NNW 3 | N 3 | N 3 | WSW 7 | WSW 4 | — | WSW 5 | WSW 4 | — | WSW 6 | WSW 4 | W 6 | WSW 7 | W 7 | — | W 6 | W 6 |
— | 6 | 9 | 8 | 6 | 1 | 30 | 4 | — | 28 | 15 | — | 59 | 31 | 114 | 290 | 358 | — | 94 | 23 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 124 | 181 | 377 | 372 | 195 | 180 | 395 | 206 | 403 | 322 | 412 | 299 | 172 | 185 | 693 | 358 | 419 | 155 | 1 | 0 |
Best forecast wave conditions in Wales - Gower | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.











