
Surf Forecasts:
Mewslade Bay surf forecast from 11 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, 10AM (local time) - 3ft (0.9m), 10s period, WSW swell with 184 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 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Aug 18) at 10AM.
| 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 | 10AM (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 take a look at what’s on the cards for Mewslade Bay over the next couple of weeks.
First off, I’ve gotta be straight with you – the opening stretch is a real struggle. We’re looking at a painful gap of several days with virtually nothing worthwhile. The water is sitting at 68°F, which is a massive 6°F warmer than normal for this time of year – that’s very unusual, and you’ll definitely feel it, but it’s not enough to make up for the lack of waves.
The first proper sign of life doesn’t show up until Thursday morning, the 13th of August. We’ve got a small 3 ft swell rolling in from the WSW with a period of 10 seconds, and the wind is a light cross-off from the NW, keeping things clean. The combined energy is moderate (184). It’s not going to blow your mind – it’s surfable but ordinary. Still, it’s the first real chance to get wet.
Thursday afternoon is a write-off thanks to a fresh breeze, so look elsewhere. Friday the 14th and Saturday the 15th stay clean with cross-off winds, but the swell is tiny – 2 ft to 3 ft – and the energy is weak (84 and 59). You’d be on a longboard or a foamie, and even then you’d be working for it.
Sunday morning the 16th is a total tease. The swell is just 1 ft, but the wind goes glassy, dead calm, with an NNE breeze. It’s a beautiful morning to be on the water, but there’s almost no wave to push you. You’d be bobbing around.
Then we hit another dry spell. Monday the 17th and Tuesday the 18th are messy with onshore and cross winds, and the swell is still small. The setup is more interesting for kite surfing than paddle surfing on those days.
Now, the standout comes on Thursday the 20th of August. We’ve got a solid 6 ft to 7 ft swell from the W and WNW, with a period of 8 seconds. The combined energy is strong – 541 and 445. Thursday morning is a bit questionable with a cross-chop, but Thursday afternoon is where it’s at. The wind goes glassy, dead calm from the SE. That’s a rare combination – a decent-sized swell and perfect clean conditions. For the more experienced surfers, the 7 ft morning swell is pushing into expert territory, but the afternoon glass-off with 6 ft is where the magic could happen. This is the best on offer in the entire forecast.
The following days drop off again. Friday the 21st has a small 3 ft swell with glassy morning conditions, but it’s short period (6 seconds) and weak energy (105). Saturday the 22nd and Sunday the 23rd see a bit more size (4 ft to 7 ft), but the winds are mostly onshore or cross, keeping it choppy and messy. The 23rd has a 7 ft swell from the west with moderate energy (486), but it’s cross-shore and lumpy – not the clean ride you’re after.
The final week is a bust. Monday the 24th through Wednesday the 26th are all blown out or tiny, with onshore winds and low energy. The 26th even has a near gale warning – stay out of the water that day.
So, to wrap it up: the first half of the forecast is a write-off, with a few small, clean windows. The real jewel is Thursday afternoon, the 20th of August at Mewslade Bay – glassy conditions with a solid 6 ft swell from the WNW. That’s your day. Get on it, because the rest of the outlook is a long, slow fade.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Wed afternoon, min 17°C on Tue morning). Winds increasing (calm on Tue night, fresh winds from the WNW by Thu afternoon). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 21°C on Fri afternoon, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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 8 | W 10 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | W 9 | WSW 8 | WSW 7 | W 7 | W 8 | WSW 7 | WSW 6 | WSW 7 | WSW 7 | WSW 7 | WSW 6 |
Wave Graph | |||||||||||||||||||||
5 | 7 | 25 | 78 | 96 | 119 | 184 | 167 | 125 | 84 | 99 | 85 | 57 | 54 | 29 | 18 | 10 | 10 | 9 | 9 | 104 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | glassy | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off | glassy | cross-on | cross | cross-on | cross-on | cross |
High Tide | 6:08PM7.85m | 6:35AM7.89m | 6:57PM8.42m | 7:21AM8.31m | 7:41PM8.80m | 8:04AM8.54m | 8:23PM8.94m | 8:44AM8.55m | 9:02PM8.81m | 9:22AM8.35m | 9:40PM8.46m | 9:59AM7.98m | 10:17PM7.94m | ||||||||
Low Tide | 11:55AM1.22m | 00:26AM0.80m | 12:45PM0.69m | 1:13AM0.33m | 1:30PM0.31m | 1:56AM0.05m | 2:10PM0.12m | 2:35AM0.00m | 2:49PM0.14m | 3:12AM0.17m | 3:25PM0.37m | 3:48AM0.53m | 4:02PM0.76m | ||||||||
5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | |
— | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 4 | 8 | — |
Temp °C | 22 | 25 | 24 | 26 | 31 | 27 | 25 | 24 | 19 | 20 | 21 | 17 | 19 | 20 | 15 | 16 | 17 | 17 | 18 | 18 | 18 |
Feels °C | 21 | 23 | 24 | 22 | 28 | 25 | 21 | 21 | 19 | 19 | 18 | 14 | 15 | 15 | 11 | 13 | 13 | 16 | 19 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | ESE 3 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | W 9 | WSW 8 | WSW 7 | W 7 | W 8 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 6 |
4 | 1 | 25 | 78 | 96 | 119 | 184 | 167 | 125 | 84 | 99 | 85 | 57 | 54 | 29 | 18 | 10 | 10 | 9 | 9 | 104 | |
Swell 2 Height (m) Direction Period (s) | W 8 | W 10 | W 9 | SW 6 | — | S 3 | — | — | — | — | — | — | W 10 | — | — | — | — | W 4 | — | W 9 | — |
5 | 7 | 6 | 1 | — | 1 | — | — | — | — | — | — | 2 | — | — | — | — | 4 | — | 2 | — | |
Swell 3 Height (m) Direction Period (s) | W 10 | SW 6 | SW 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 18 | W 16 |
2 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 5 | |
Wind waves Height (m) Direction Period (s) | ESE 3 | — | S 6 | ESE 2 | ESE 3 | — | — | — | WSW 4 | — | — | NNW 3 | N 3 | NW 3 | NNW 3 | — | WSW 6 | — | — | — | — |
1 | — | 3 | 1 | 3 | — | — | — | 4 | — | — | 2 | 5 | 6 | 4 | — | 10 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 395 | 338 | 4 | 4 | 2 | 0 | 0 | 358 | 1 | 124 | 1 | 1 | 181 | 181 | 38 | 180 | 396 | 405 | 378 | 381 | 138 |
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.











