Surf Forecasts:
Mewslade Bay surf forecast from 27 Jul 2026:
- Most powerful swell: Monday 27 Jul, 4PM (local time) - 3.5ft (1.0m), 6s period, WSW swell with 85 kJ wave energy.
Best Forecast Surf Conditions for Mewslade Bay this week:
The most powerful waves expected at Mewslade Bay in the next 16 days are 1.0m 6s and forecast to arrive on Monday (Jul 27) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Aug 02) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Mon 27th Jul) | 3.5ft (1.0m) 6s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright, let’s break it down for Mewslade Bay.
First thing, the water is running about 69°F, which is much warmer than you’d expect for this time of year. That’s the standout thing here. The surf, though, is a different story. We’re looking at a long, dry spell. From Monday 27th July right through to the morning of Saturday 8th August, there’s nothing worth getting excited about. The swell is tiny, the wind is often cross or onshore, and the energy is flat. We’re talking about a period of nearly two weeks with hardly a ripple. The combined swell energy is mostly in the single or double digits, so it’s weak.
The real interest finally shows up on Saturday 8th August. The morning brings a pulse of 6ft swell from the west, with a period of 8 seconds. That’s a bump in energy, with the combined reading hitting 362. That’s a solid moderate energy. The wind is offshore from the north at just 6 mph, which is a big positive. It’s going to be clean. That wave height is a bit much for beginners, but it’s within the realm of good fun for the rest of us. The afternoon sees the swell drop a touch to 5ft, still with clean conditions from a cross-offshore northwest wind.
After that, Sunday 9th August still has some clean offshore wind from the north, but the swell is dropping fast, down to 4ft in the morning. The energy is already back down to 113. It’s rideable, but it’s a big step down from the day before.
The true standout is Saturday 8th August morning. That’s your best shot. The swell is up, the wind is offshore, and the break is exposed to the west. It’s the only time the forecast says “expect good surf conditions.” Keep in mind Mewslade Bay can get busy, crowds are possible, so get there early if you can. After that, the week looks quiet again.
Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Tue afternoon, min 16°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Thu morning, min 13°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | |||||||||||||||
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 6 | WSW 6 | WSW 6 | WSW 6 | W 5 | W 5 | W 11 | W 3 | W 10 | WSW 6 | W 6 | WSW 5 | W 6 | W 6 | W 5 | W 5 | W 5 | WSW 8 | WSW 8 | WSW 7 | W 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 84 | 85 | 56 | 34 | 20 | 12 | 9 | 5 | 8 | 50 | 64 | 45 | 73 | 41 | 13 | 13 | 12 | 6 | 11 | 5 | 7 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | on | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross | cross | cross-on | cross | cross-on | cross-off | cross | cross-on | off |
High Tide | 6:05PM6.72m | 6:26AM6.77m | 6:46PM7.16m | 7:04AM7.15m | 7:22PM7.55m | 7:40AM7.47m | 7:57PM7.87m | 8:14AM7.70m | 8:30PM8.07m | 8:47AM7.83m | 9:04PM8.16m | 9:21AM7.85m | 9:38PM8.11m | ||||||||
Low Tide | 11:53AM2.12m | 00:19AM1.89m | 12:35PM1.72m | 00:58AM1.50m | 1:12PM1.35m | 1:34AM1.18m | 1:46PM1.06m | 2:08AM0.93m | 2:18PM0.86m | 2:40AM0.78m | 2:50PM0.77m | 3:11AM0.73m | 3:22PM0.78m | 3:44AM0.79m | |||||||
 |  |  |  | |  | | | | | | | | | | | | | | | | |
 | 5:31 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:39 | — | — | 5:41 | — | — |
 | — | — | 9:13 | — | — | 9:12 | — | — | 9:10 | — | — | 9:08 | — | — | 9:07 | — | — | 9:06 | — | — | 9:04 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 18 | 18 | 18 | 19 | 18 | 19 | 19 | 18 | 17 | 17 | 16 | 15 | 16 | 16 | 16 | 17 | 16 | 18 | 22 | 20 |
Feels °C | 14 | 16 | 17 | 17 | 19 | 19 | 18 | 18 | 18 | 15 | 13 | 13 | 9 | 10 | 13 | 12 | 13 | 12 | 16 | 19 | 16 |
Swell 1 Height (m) Direction Period (s) | W 6 | — | WSW 6 | WSW 6 | W 5 | W 5 | WSW 5 | W 10 | W 10 | W 10 | W 10 | W 9 | WSW 6 | W 9 | W 5 | W 5 | WSW 8 | W 4 | WSW 8 | WSW 7 | W 10 |
| kJ | 84 | — | 56 | 34 | 20 | 12 | 8 | 2 | 8 | 2 | 2 | 2 | 62 | 2 | 13 | 13 | 6 | 3 | 11 | 5 | 7 |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 8 | W 8 | W 8 | W 11 | W 8 | W 6 | — | — | W 9 | — | — | W 9 | W 8 | W 10 | WSW 8 | — | W 10 | SW 7 |
| kJ | — | — | — | 1 | 1 | 1 | 2 | 1 | 3 | — | — | 2 | — | — | 1 | 5 | 2 | 6 | — | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 12 | W 11 | W 11 | — | W 8 | — | — | — | — | — | W 11 | W 11 | — | W 9 | — | — | SW 8 |
| kJ | — | — | — | — | 3 | 2 | 9 | — | 1 | — | — | — | — | — | 3 | 2 | — | 2 | — | — | 3 |
Wind waves Height (m) Direction Period (s) | — | WSW 6 | — | — | — | — | — | W 3 | W 4 | WSW 6 | W 6 | WSW 5 | W 6 | W 6 | NNW 3 | — | W 5 | NNW 3 | NNE 3 | NW 2 | N 3 |
| kJ | — | 85 | — | — | — | — | — | 5 | 7 | 50 | 64 | 45 | 73 | 41 | 1 | — | 12 | 2 | 1 | 1 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 358 | 358 | 95 | 134 | 172 | 125 | 172 | 418 | 171 | 322 | 358 | 396 | 181 | 695 | 395 | 374 | 367 | 437 | 125 | 403 | 125 |
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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