Surf Forecasts:
Mewslade Bay surf forecast from 21 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 7AM (local time) - 3ft (0.9m), 6s period, WSW swell with cross-offshore winds.
- Most powerful swell: Sunday 26 Jul, 4PM (local time) - 5ft (1.6m), 7s period, W swell with 276 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 7AM (local time) - 3ft (0.9m), 6s 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 Tuesday (Jul 28) at 7AM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.8m and 6s. 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 1.6m 7s and forecast to arrive on Sunday (Jul 26) 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 0.6m 3s period and expected on Tuesday (Jul 21) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Tue 28th Jul) | 3ft (0.9m) 6s |
| Best Surf | 7AM (Tue 28th Jul) | 3ft (0.9m) 6s |
| Most Powerful | 4PM (Sun 26th Jul) | 5ft (1.6m) 7s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get straight into it for the Mewslade Bay area. It’s a pretty bleak start to the outlook, so if you’ve got your hopes up for a session this week, you might want to park them for a while.
The whole 16-day window is a tough one. We’re looking at a long, dry spell with barely a ripple. For the first several days, from Tuesday the 21st right through to about the end of July, the swell is tiny – we’re talking 0.3ft to 0.7ft most of the time. The combined swell energy is pitiful, often in the single digits, like 3 or 7 (weak energy). It’s basically a lake out there. Don’t bother paddling out.
Then, around Sunday the 26th, something finally stirs. The swell bumps up to 5ft to 5ft from the West, and the energy jumps to 220 and then 457 (moderate wave energy) on the Sunday afternoon. It’s a short-period, windswell though, with a period of just 7 seconds, so it’ll be a bit messy and lumpy. The best bet is Sunday morning the 26th – the wind is offshore from the NNW, which will keep it clean. For a confident intermediate, this might be the only real shot. But it’s a short window, and the afternoon turns into a cross-shore mess.
The rest of the run into the second week drops off again. Monday the 27th morning has a bit of leftover 5ft from the West, with a clean cross-offshore wind, but the energy is already fading to 173 (moderate). After that, it’s back to tiny, weak surf right through to August 5th. The water temperature is about average for the time of year, nothing wild to report.
If you’re desperate, Sunday morning the 26th is the standout – but keep your expectations in check. It’s not a classic, just the best of a bad lot. For the rest of the time, it’s a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Wed afternoon, min 12°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Warm (max 21°C on Fri afternoon, min 15°C on Sat night). Winds increasing (calm on Fri night, fresh winds from the WSW by Sat afternoon). | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
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 11 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | W 14 | SW 13 | SW 13 | W 8 | SW 12 | W 3 | W 6 | W 7 | W 7 | W 7 | W 7 | W 6 | W 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 10 | 7 | 7 | 6 | 8 | 6 | 4 | 7 | 7 | 1 | 6 | 8 | 119 | 220 | 276 | 112 | 173 | 78 | 42 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-off | cross-off | cross | off | glassy | cross-on | cross-off | cross | cross-on | glassy | cross-on | cross-on | cross | cross-off | cross | cross-off | cross-off | cross-on | cross |
High Tide | 12:02PM6.78m | 00:26AM6.68m | 12:53PM6.31m | 1:21AM6.18m | 1:54PM5.96m | 2:29AM5.85m | 3:07PM5.83m | 3:44AM5.81m | 4:19PM5.96m | 4:51AM6.02m | 5:18PM6.29m | 5:43AM6.38m | 6:05PM6.72m | ||||||||
Low Tide | 5:51AM1.66m | 6:09PM1.94m | 6:39AM2.15m | 7:04PM2.39m | 7:36AM2.55m | 8:09PM2.70m | 8:45AM2.76m | 9:24PM2.78m | 9:58AM2.73m | 10:35PM2.61m | 11:02AM2.48m | 11:32PM2.28m | 11:53AM2.12m | 00:19AM1.89m | |||||||
 | |  |  | | | | |  | | | |  | |  | | | | | | | |
 | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — |
 | — | — | 9:22 | — | — | 9:20 | — | — | 9:19 | — | — | 9:17 | — | — | 9:15 | — | — | 9:15 | — | — | 9:13 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — |
Temp °C | 19 | 21 | 17 | 18 | 22 | 20 | 20 | 22 | 19 | 20 | 21 | 19 | 17 | 17 | 17 | 17 | 18 | 19 | 17 | 17 | 17 |
Feels °C | 17 | 18 | 13 | 14 | 19 | 17 | 19 | 20 | 16 | 17 | 17 | 16 | 14 | 12 | 12 | 12 | 13 | 16 | 12 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | W 11 | W 10 | W 10 | W 10 | W 9 | NW 4 | W 9 | W 8 | W 8 | W 8 | W 8 | W 3 | W 8 | — | W 6 | W 7 | W 7 | W 7 | — | — | W 6 |
| kJ | 2 | 2 | 8 | 7 | 7 | 4 | 6 | 6 | 1 | 1 | 1 | 1 | 1 | — | 109 | 220 | 181 | 112 | — | — | 42 |
Swell 2 Height (m) Direction Period (s) | W 7 | W 7 | W 7 | — | — | W 9 | — | W 14 | — | SW 13 | SW 13 | — | SW 12 | — | — | — | — | — | — | — | — |
| kJ | 1 | 1 | 1 | — | — | 6 | — | 4 | — | 7 | 7 | — | 6 | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | SW 16 | — | — | W 15 | SW 15 | — | W 14 | — | — | W 8 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 10 | — | — | 4 | 8 | — | 4 | — | — | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NNW 4 | N 3 | NW 3 | NE 3 | — | — | — | — | WSW 2 | — | W 4 | W 3 | WSW 6 | — | W 7 | NNW 3 | W 7 | W 6 | — |
| kJ | — | — | 7 | 6 | 2 | 3 | — | — | — | — | 1 | — | 3 | 8 | 119 | — | 276 | 7 | 173 | 78 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 125 | 847 | 198 | 384 | 464 | 364 | 118 | 191 | 367 | 429 | 785 | 408 | 435 | 780 | 896 | 16 | 358 | 12 | 181 | 322 | 358 |
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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