Surf Forecasts:
Mewslade Bay surf forecast from 3 Sep 2026:
- Best quality surf: Saturday 5 Sep, 10PM (local time) - 2.5ft (0.7m), 10s period, WSW swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 10AM (local time) - 6.5ft (2.0m), 13s period, WSW swell with 1,259 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 10PM (local time) - 2.5ft (0.7m), 10s 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 Saturday (Sep 05) at 10PM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.1m and 13s. 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 2.0m 13s and forecast to arrive on Monday (Sep 07) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sat 5th Sep) | 2.5ft (0.7m) 10s |
| Best Surf | 10PM (Sat 5th Sep) | 2.5ft (0.7m) 10s |
| Most Powerful | 10AM (Mon 7th Sep) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's chew the fat on Mewslade Bay for the next couple of weeks. It's a bit of a slow-burner, so don't be in a rush.
The first week is a write-off. We start Thursday with a 5ft swell from the WSW, but it's messy with a strong cross-onshore wind. The water is a weirdly warm 67°F, which is a good 6°F warmer than usual. The energy is moderate (264), but the wind is just ruining the surface.
Friday and Saturday are no better. The wind stays onshore or cross-shore, and the swell drops. By Sunday, we're looking at tiny 2ft waves with hardly any energy (62). It's a proper blank run to start.
The first real chance comes on Monday, September 7th. The morning session has a solid 7ft groundswell from the WSW, and the energy jumps to 1587. The wind is a clean cross-offshore, and the conditions are clean. That's the one to watch. This is a big set for Mewslade, over 5ft, so it's not for the beginners, and that long 13-second period means it'll be a proper groundswell that might straighten out, but it's the best we've seen. The afternoon gets choppy again.
After that, it's back to the same messy, lumpy cross-shore conditions for the rest of the week. The swell hangs around 5ft to 6ft, but the wind is a fresh 19 mph from the west, making it a real struggle.
For the second week, things get a little more interesting but less certain. Saturday the 12th and Sunday the 13th are still poor.
Then Monday the 14th of September looks like our next good shout. We've got a clean 5ft swell from the WSW with a light offshore wind from the north. The period is a solid 9 seconds, and the energy is moderate (308). Conditions are expected to be clean. That's a solid call.
Then Tuesday the 15th of September, we get a real gem. The wind drops to zero. It's glassy. The swell is a modest 3ft from the west, but it's perfectly clean. The energy is low (158), so it won't be a powerhouse, but for a longboard or a funboard, that's going to be a beautiful morning.
After that, it fades out into small, weak surf and fresh winds. The best bets are the Monday the 7th morning for some grunt, and the glassy Tuesday the 15th for a clean, easy day.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Very mild (max 19°C on Thu night, min 14°C on Fri night). Winds decreasing (strong winds from the SW on Thu night, calm by Sat night). | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Mon night. Warm (max 23°C on Sun afternoon, min 12°C on Mon night). Winds increasing (light winds from the SE on Sun afternoon, strong winds from the WSW by Mon night). | ||||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | |||||||||||||||
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) | WSW 8 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | W 7 | WSW 7 | WSW 8 | WSW 9 | WSW 6 | SW 6 | WSW 5 | WSW 13 | WSW 12 | WSW 10 | W 7 | WSW 8 | W 7 | WSW 7 | WSW 6 | WSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 256 | 294 | 465 | 560 | 416 | 238 | 79 | 99 | 65 | 30 | 66 | 56 | 1259 | 983 | 932 | 397 | 427 | 352 | 161 | 98 | 373 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross | cross | cross | on | cross-off | cross-on | cross-on | cross | cross | cross-off | cross | cross-on | cross-on |
High Tide | 10:51AM7.44m | 11:16PM7.20m | 11:43AM6.88m | 00:16AM6.58m | 12:52PM6.37m | 1:38AM6.14m | 2:24PM6.19m | 3:16AM6.18m | 3:56PM6.54m | 4:36AM6.67m | 5:04PM7.20m | 5:34AM7.31m | 5:56PM7.89m | ||||||||
Low Tide | 4:49PM1.33m | 5:16AM1.67m | 5:45PM1.90m | 6:20AM2.24m | 7:06PM2.39m | 7:55AM2.58m | 8:54PM2.45m | 9:38AM2.39m | 10:25PM1.99m | 10:53AM1.83m | 11:27PM1.35m | 11:47AM1.20m | 00:15AM0.74m | ||||||||
 |  |  |  | |  | | |  | | | | | | | | | | | |  | |
 | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — |
 | — | 8:00 | — | — | 7:58 | — | — | 7:54 | — | — | 7:52 | — | — | 7:51 | — | — | 7:49 | — | — | 7:45 | — |
mm | — | — | 3 | — | — | — | — | — | 1 | — | — | 1 | — | — | 12 | — | — | — | — | — | 6 |
Temp °C | 18 | 18 | 19 | 16 | 17 | 17 | 15 | 15 | 16 | 20 | 23 | 18 | 16 | 16 | 16 | 15 | 16 | 16 | 15 | 16 | 18 |
Feels °C | 16 | 15 | 12 | 11 | 11 | 12 | 13 | 13 | 12 | 16 | 21 | 15 | 12 | 12 | 11 | 8 | 9 | 11 | 11 | 12 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | — | SW 15 | SW 14 | SW 14 | WSW 7 | WSW 8 | WSW 9 | WSW 6 | SW 13 | SW 16 | WSW 13 | — | — | W 10 | — | — | — | — | — |
| kJ | 8 | 9 | — | 8 | 8 | 8 | 79 | 99 | 65 | 30 | 7 | 11 | 187 | — | — | 53 | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | W 16 | W 9 | SW 13 | SW 13 | WSW 9 | SW 13 | SW 12 | WSW 13 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 5 | 38 | 7 | 7 | 16 | 6 | 6 | 141 | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 15 | SW 14 | — | — | SW 13 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 4 | 7 | — | — | 7 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 8 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | W 7 | — | — | — | SE 3 | SW 6 | WSW 5 | WSW 13 | WSW 12 | WSW 10 | W 7 | WSW 8 | W 7 | WSW 7 | WSW 6 | WSW 7 |
| kJ | 256 | 294 | 465 | 560 | 416 | 238 | — | — | — | 9 | 66 | 56 | 1259 | 983 | 932 | 397 | 427 | 352 | 161 | 98 | 373 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 124 | 311 | 141 | 127 | 358 | 31 | 1 | 124 | 2 | 46 | 4 | 95 | 10 | 236 | 33 | 358 | 322 | 31 | 172 | 124 | 192 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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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