Surf Forecasts:
Mewslade Bay surf forecast from 8 Sep 2026:
- Best quality surf: Friday 11 Sep, 7AM (local time) - 5ft (1.5m), 9s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 10AM (local time) - 6ft (1.8m), 9s period, WSW swell with 510 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 1PM (local time) - 3.5ft (1.0m), 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 Wednesday (Sep 09) at 1PM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.7m and 7s. 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 9s and forecast to arrive on Tuesday (Sep 08) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Sep 09) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Wed 9th Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 7AM (Fri 11th Sep) | 5ft (1.5m) 9s |
| Most Powerful | 10AM (Tue 8th Sep) | 6ft (1.8m) 9s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright, Rusty here again, giving you the lowdown in feet and miles per hour.
So, the next 16 days at Mewslade are looking pretty rough. We've got a long stretch of poor surf, with just a couple of small windows that might be worth a look. The water is a warm 66°F, which is about 5° warmer than usual for this time of year, so you'll be alright in a spring suit.
The first real chance of a wave comes on the morning of Friday, September 11th. We're looking at a 5ft swell from the WSW with a 9-second period, and a light 9 mph wind from the NNW. That's a clean, offshore breeze, so the surf should be clean. The combined energy is a moderate 281, so there's some juice. It's not a classic, but it's the best we've got. The afternoon of the 11th will be smaller, around 4ft from the same direction.
The one standout, and the only time I'd really tell you to paddle out, is that Friday morning, the 11th of September. It's a fairly consistent spot, exposed to the SW swell. The wind is light and glassy, which is a huge deal. The waves will be around chest to head high. It can get a crowd sometimes, so be ready for that.
After that, it's a desert. Flat, blown-out, and tiny waves take over until the morning of Sunday, the 20th of September. That morning brings a small 4ft swell from the WSW with a light 6 mph NW wind, making it clean. The energy is weak at 167, so it's a longboard or a funboard session. The afternoon of the 20th gets a bit choppier.
Honestly, keep your expectations low. The 11th is your only real shot, and even then, it's not going to be a day you'll tell your grandkids about.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Mon night. Very mild (max 17°C on Mon afternoon, min 13°C on Tue night). Winds decreasing (fresh winds from the SW on Mon night, light winds from the W by Wed night). | Days 5-7 Weather SummaryModerate rain (total 14mm), heaviest on Sat afternoon. Very mild (max 18°C on Sat night, min 12°C on Fri night). Winds increasing (calm on Fri night, strong winds from the SW by Sat afternoon). | |||||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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 13 | W 12 | WSW 9 | W 9 | W 7 | W 8 | WSW 8 | WSW 8 | WSW 8 | WSW 5 | WSW 8 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WSW 5 | WSW 7 | WSW 7 | WSW 9 | WSW 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1060 | 786 | 510 | 431 | 179 | 161 | 116 | 49 | 32 | 44 | 364 | 281 | 193 | 94 | 45 | 59 | 289 | 147 | 166 | 103 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-on | on | on | on | cross-on | cross-off | cross-off | off | on | on | cross-off | cross-off | cross | cross-on |
High Tide | 4:36AM6.67m | 5:04PM7.20m | 5:34AM7.31m | 5:56PM7.89m | 6:21AM7.90m | 6:40PM8.44m | 7:02AM8.34m | 7:20PM8.77m | 7:40AM8.58m | 7:57PM8.86m | 8:16AM8.60m | 8:33PM8.72m | ||||||||
Low Tide | 10:25PM1.99m | 10:53AM1.83m | 11:27PM1.35m | 11:47AM1.20m | 00:15AM0.74m | 12:31PM0.65m | 00:56AM0.29m | 1:10PM0.27m | 1:33AM0.05m | 1:46PM0.09m | 2:07AM0.02m | 2:20PM0.12m | 2:39AM0.20m | |||||||
 |  |  |  |  | | |  | | |  | | | | |  | | | | | |
 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:46 | — | — | 6:47 | — | — |
 | 7:51 | — | — | 7:49 | — | — | 7:45 | — | — | 7:44 | — | — | 7:42 | — | — | 7:38 | — | — | 7:37 | — |
mm | — | 7 | — | — | — | — | — | — | — | — | 3 | — | — | — | — | 9 | 2 | — | — | — |
Temp °C | 17 | 15 | 15 | 16 | 15 | 15 | 15 | 15 | 16 | 17 | 17 | 16 | 17 | 14 | 15 | 16 | 18 | 15 | 15 | 16 |
Feels °C | 12 | 9 | 8 | 9 | 8 | 12 | 11 | 12 | 11 | 12 | 13 | 14 | 14 | 11 | 11 | 10 | 14 | 10 | 11 | 14 |
Swell 1 Height (m) Direction Period (s) | — | W 12 | WSW 9 | — | WSW 9 | W 8 | WSW 8 | WSW 8 | WSW 8 | W 11 | WSW 8 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | W 15 | W 7 | WSW 7 | WSW 9 | WSW 9 |
| kJ | — | 786 | 510 | — | 62 | 161 | 116 | 49 | 32 | 2 | 364 | 281 | 193 | 94 | 45 | 4 | 233 | 147 | 166 | 103 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 13 | W 12 | W 11 | — | — | — | N 3 | W 11 | — | — | W 13 | SW 13 | — |
| kJ | — | — | — | — | — | — | — | 3 | 3 | 2 | — | — | — | 1 | 9 | — | — | 3 | 7 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 16 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 13 | WSW 7 | — | W 9 | W 7 | — | W 6 | — | SW 4 | WSW 5 | — | — | — | — | — | WSW 5 | WSW 7 | — | — | — |
| kJ | 1060 | 444 | — | 431 | 179 | — | 24 | — | 6 | 44 | — | — | — | — | — | 59 | 289 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 135 | 135 | 10 | 358 | 16 | 1 | 124 | 46 | 158 | 311 | 124 | 0 | 0 | 0 | 114 | 322 | 260 | 154 | 31 | 95 |
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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