Surf Forecasts:
Mewslade Bay surf forecast from 8 Aug 2026:
- Best quality surf: Thursday 13 Aug, 1AM (local time) - 3ft (0.9m), 9s period, WSW swell with glassy winds.
- Most powerful swell: Thursday 13 Aug, 10PM (local time) - 3ft (0.9m), 10s period, WSW swell with 154 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 1AM (local time) - 3ft (0.9m), 9s 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 Thursday (Aug 13) at 1AM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.2m and 3s. 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 0.9m 10s and forecast to arrive on Thursday (Aug 13) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Thursday (Aug 13) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Thu 13th Aug) | 3ft (0.9m) 9s |
| Best Surf | 1AM (Thu 13th Aug) | 3ft (0.9m) 9s |
| Most Powerful | 10PM (Thu 13th Aug) | 3ft (0.9m) 10s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what Mewslade Bay has in store for us over the next couple of weeks.
Right off the bat, I gotta be straight with you – it’s a tough start. We’re looking at a solid stretch of poor surf conditions from now until the middle of the month. For the first week and a half, the swell is tiny, the energy is weak, and the wind is all over the place. The water temp is pretty standard for this time of year, nothing unusual there. You’ll be sitting on your board more than you’re riding, so maybe save the petrol for now.
The first real glimmer of hope comes on Tuesday, the 18th of August. The morning is the standout. The swell bumps up to a clean 6ft from the WSW, with a period of 8 seconds. The wind is a clean offshore from the NNW, 9 mph, and the energy is solid at 438. This is the best on offer. It’s a bit on the bigger side, so it’s probably more for the intermediate crew who know what they’re doing. The wind should keep it tidy, and the crowds are *sometimes* an issue, so you might have a few mates out, but it’s worth the paddle.
The afternoon of the 18th stays similar in size at 6ft from the W, but the wind picks up to 12 mph and the energy jumps to 464. It’s still clean, but a bit more juice in the water. Good for a session, but the morning looks cleaner.
After that, it drops off again. The 19th sees the swell fade back to 2ft, and the rest of the window is just tiny, weak waves and messy wind. There’s a day on the 21st with a 5ft swell from the WSW, but the period is only 5 seconds and the wind is cross, so it’s gonna be a mess.
So, to sum it up: the first week is a write-off. The only real shot you have is Tuesday the 18th of August, and the morning is your best bet. After that, we’re back to small and ordinary. It’s a pretty blank run, but in this area, that’s not unusual. Forecasts can change, but for now, mark that Tuesday in your calendar.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Mon afternoon, min 14°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Wed afternoon, min 16°C on Tue night). Winds decreasing (fresh winds from the ESE on Wed morning, calm by Thu morning). | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
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 9 | W 9 | WSW 7 | WSW 7 | WSW 6 | W 3 | SW 7 | SW 6 | SW 7 | WSW 6 | W 10 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 10 | W 9 | W 9 | WSW 9 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 5 | 6 | 13 | 1 | 7 | 6 | 7 | 4 | 7 | 43 | 78 | 98 | 113 | 113 | 140 | 142 | 103 | 59 | 33 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross-on | cross-off | cross-off | cross | cross-off | cross | cross | cross | cross | cross-on | glassy | glassy | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 2:35PM6.38m | 3:19AM6.43m | 3:59PM6.64m | 4:38AM6.79m | 5:10PM7.20m | 5:42AM7.35m | 6:08PM7.85m | 6:35AM7.89m | 6:57PM8.42m | 7:21AM8.31m | 7:41PM8.80m | 8:04AM8.54m | 8:23PM8.94m | ||||||||
Low Tide | 8:06AM2.27m | 8:52PM2.25m | 9:36AM2.19m | 10:20PM1.94m | 10:54AM1.77m | 11:30PM1.39m | 11:55AM1.22m | 00:26AM0.80m | 12:45PM0.69m | 1:13AM0.33m | 1:30PM0.31m | 1:56AM0.05m | 2:10PM0.12m | 2:35AM0.00m | |||||||
 | |  |  | | |  | | | | | | | | | | | | | | | |
 | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 20 | 19 | 18 | 19 | 18 | 20 | 22 | 22 | 23 | 27 | 23 | 24 | 29 | 23 | 23 | 25 | 20 | 20 | 20 | 17 |
Feels °C | 16 | 18 | 17 | 17 | 16 | 16 | 18 | 18 | 18 | 19 | 24 | 21 | 19 | 25 | 21 | 19 | 22 | 18 | 17 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | W 9 | SW 8 | WSW 7 | WSW 7 | W 8 | W 3 | W 4 | SW 6 | SW 7 | WSW 6 | SW 6 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 10 | W 9 | W 9 | WSW 9 | W 8 |
| kJ | 2 | 2 | 5 | 4 | 1 | 1 | 3 | 6 | 7 | 4 | 2 | 43 | 78 | 98 | 113 | 113 | 140 | 142 | 103 | 59 | 33 |
Swell 2 Height (m) Direction Period (s) | — | W 9 | W 9 | W 8 | SW 12 | SW 6 | SW 7 | W 5 | — | W 8 | W 10 | SW 6 | SW 6 | W 6 | WSW 3 | W 11 | — | — | — | — | — |
| kJ | — | 2 | 2 | 1 | 6 | 1 | 7 | 4 | — | 1 | 7 | 1 | 1 | 1 | 1 | 22 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 5 | — | — | SW 12 | — | W 8 | — | W 8 | W 4 | W 10 | W 13 | SW 6 | — | — | — | — | — | — | — | — | — |
| kJ | 1 | — | — | 6 | — | 1 | — | 1 | 1 | 2 | 3 | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | WSW 6 | — | — | — | NE 2 | ESE 3 | SE 3 | SE 3 | ESE 4 | ESE 4 | — | — | W 2 | NNW 3 | — | NW 3 | NW 3 |
| kJ | — | — | — | — | 13 | — | — | — | 1 | 6 | 3 | 5 | 16 | 9 | — | — | 1 | 1 | — | 3 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 323 | 323 | 180 | 180 | 358 | 180 | 125 | 180 | 180 | 403 | 359 | 4 | 43 | 2 | 0 | 0 | 135 | 0 | 1 | 412 | 54 |
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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