Surf Forecasts:
Mewslade Bay surf forecast from 12 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, 4PM (local time) - 3.5ft (1.0m), 10s period, W swell with 200 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. 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 1.0m 10s and forecast to arrive on Thursday (Aug 13) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 15) 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 | 4PM (Thu 13th Aug) | 3.5ft (1.0m) 10s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright, this is Rusty, checkin' in from the coast. Let's get into it.
Alright, lookin' at the charts for the foreseeable future, and if you're hopin' for a solid session, you're gonna have to be a patient bugger. There's a long, dry spell on the cards for Mewslade Bay. We're talkin' a solid stretch of days with nothin' really worth paddlin' out for. Most of the time, the swell is tiny, the wind is messy, or both. The water is a balmy 68°, but with a temperature anomaly of 3°, it's much warmer than normal for this time of year. That's a bit of trivia, but it won't help you catch a wave.
The first real glimmer of hope doesn't show up until Monday, 24th of August in the morning. You'll see a bit of a pulse with a 4ft swell from the WSW, but the period is a short 5 seconds, so it's gonna be weak and fat. The wind is offshore, though, so it'll be clean. But the real standout, the one that's got my heart beatin' a little faster, is the Monday afternoon, 24th of August. The swell is going to pump up to 6ft from the WSW, with a moderate offshore wind from the NNE. That's gonna be clean! The wave energy is strong (285), and it feels like the best chance we're gonna get. The period is a short 7 seconds, so it'll be a bit lumpy and less powerful than a groundswell, but for Mewslade, that's a serious session.
Then, hold onto your boards, because on Wednesday, 26th of August in the afternoon, things get real interesting. The wind goes completely glassy, and the swell hits 7ft from the WSW. That's a lot of water, with very strong wave energy (468). That size is only for the experts – it's too big for a beginner. The period is still short at 7 seconds, so it's gonna be a bit of a washing machine, but with glassy conditions? That's a rare and powerful combo. If you're experienced, you'll be on it.
So, the best on offer is that Monday afternoon session, and then the big, glassy Wednesday afternoon for the brave. The rest of the time? It's a tough stretch, mate. A lot of dry spells. But that's the coast for ya.
Rusty
Short Range ForecastMostly dry. Warm (max 31°C on Wed afternoon, min 18°C on Tue night). Winds increasing (calm on Wed night, fresh winds from the WNW by Thu afternoon). | Days 5-7 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 22°C on Fri afternoon, min 12°C on Sat night). Winds decreasing (fresh winds from the NNW on Sat afternoon, light winds from the WSW by Sun morning). | |||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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 10 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | W 10 | WSW 10 | WSW 9 | WSW 9 | W 6 | W 8 | W 7 | WSW 8 | WSW 7 | W 7 | WSW 7 | WSW 7 | W 8 | W 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 7 | 25 | 57 | 96 | 119 | 184 | 200 | 157 | 108 | 80 | 26 | 29 | 40 | 19 | 11 | 26 | 5 | 5 | 12 | 28 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | glassy | cross-off | cross | cross | cross-on | cross | cross-off | cross-off | cross-off | off | off | cross-on | cross-off | off | cross-on | off |
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 | 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 | ||||||||
 |  | | | | |  |  | | | | | | | | |  | | | | |
 | — | — | 5:56 | — | — | 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 25 | 23 | 26 | 31 | 26 | 25 | 25 | 19 | 22 | 22 | 18 | 19 | 19 | 15 | 17 | 19 | 15 | 18 | 19 | 17 |
Feels °C | 23 | 20 | 22 | 28 | 24 | 21 | 21 | 18 | 20 | 20 | 16 | 14 | 13 | 10 | 15 | 14 | 11 | 16 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | ESE 3 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | — | WSW 10 | WSW 9 | WSW 9 | W 6 | W 8 | W 7 | WSW 8 | WSW 7 | — | WSW 7 | WSW 7 | W 8 | W 7 |
| kJ | 1 | 25 | 57 | 96 | 119 | 184 | — | 157 | 108 | 80 | 26 | 29 | 40 | 19 | 11 | — | 5 | 5 | 12 | 28 |
Swell 2 Height (m) Direction Period (s) | W 10 | W 9 | SW 6 | ESE 3 | — | — | — | WNW 4 | — | — | WSW 8 | W 10 | — | W 8 | — | — | W 5 | — | — | W 17 |
| kJ | 7 | 6 | 1 | 1 | — | — | — | 4 | — | — | 22 | 2 | — | 18 | — | — | 2 | — | — | 5 |
Swell 3 Height (m) Direction Period (s) | SW 6 | SW 6 | — | — | — | — | — | — | — | — | W 11 | W 10 | — | — | — | — | — | — | W 18 | — |
| kJ | 2 | 1 | — | — | — | — | — | — | — | — | 2 | 2 | — | — | — | — | — | — | 6 | — |
Wind waves Height (m) Direction Period (s) | — | S 6 | ESE 2 | — | — | — | W 10 | — | W 5 | — | N 3 | N 4 | NNW 4 | N 4 | NNW 3 | W 7 | N 3 | — | — | — |
| kJ | — | 3 | 1 | — | — | — | 200 | — | 11 | — | 5 | 10 | 13 | 14 | 3 | 26 | 2 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 338 | 4 | 4 | 2 | 0 | 0 | 358 | 0 | 16 | 396 | 181 | 318 | 318 | 360 | 403 | 384 | 418 | 379 | 299 | 54 |
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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