Surf Forecasts:
Mewslade Bay surf forecast from 28 Jul 2026:
- Most powerful swell: Tuesday 4 Aug, 10AM (local time) - 4.5ft (1.3m), 8s period, WSW swell with 219 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 1.3m 8s and forecast to arrive on Tuesday (Aug 04) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Sunday (Aug 02) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Tue 4th Aug) | 4.5ft (1.3m) 8s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a proper look at what's on the table for Mewslade Bay. Gotta be straight with you – it’s a tough stretch ahead. The water's sitting at a very unusual 69°F, which is 8°F warmer than we expect for this time of year. That’s a proper anomaly, makes the place feel like a bathtub.
Looking at the whole 16-day run, there’s not a single "go" day for surfing here. The energy is just too weak for too long. We start with a combined swell energy of only 46, and it barely nudges above that for the first week. Short-period, small windswell is all we get. The wind is mostly onshore or cross-shore, and the conditions are described as "poor" across every single session.
There is a couple of moments that almost look interesting. On Saturday, August 1st, the morning shows a clean, cross-offshore NW wind with a 2ft swell, but the energy is only 37 and the period is a tiny 5 seconds. It might be clean as a whistle for a log or a swim, but there’s no push in it. The following Saturday, August 8th, the afternoon bumps up to 2ft and a 6-second period, but it’s cross-on and a bit choppy. Still a weak energy of 43.
The 4th and 5th of August see a slight lift, with the swell popping up near 4ft to 6ft. On the morning of the 5th, we get a clean 4ft swell from the WSW with a crisp NW cross-offshore breeze. The energy jumps to 149. For a few hours that Wednesday, it actually looks like a surfable wave, but the period is still short at 7 seconds. It might be a bit lumpy and close-outs on a beach break.
Even by the end of the second week, the best we see is on the 11th with a 3ft swell and 8-second period, but the wind is cross-onshore and messy. There’s also an interesting glassy moment on the afternoon of the 12th with the wind dropping to zero, but again it's only a weak 2ft.
Honestly, for a spot like this that is exposed and usually picks stuff up, it's a disappointing run. The setup looks more interesting for kite surfing than paddle surfing on the days with stronger cross-shore winds.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Tue morning, min 15°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Sun afternoon, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | |||||||||||||||
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) | WSW 6 | WSW 5 | W 5 | WSW 5 | WSW 5 | W 4 | W 5 | WSW 5 | W 5 | W 5 | W 5 | WSW 11 | W 5 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | WSW 10 | WSW 9 | WSW 9 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 45 | 21 | 13 | 8 | 13 | 14 | 27 | 36 | 13 | 12 | 19 | 12 | 19 | 26 | 23 | 22 | 22 | 21 | 90 | 86 | 80 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | glassy | cross-on | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross-on | cross-off | cross | cross-off | cross | cross-off | glassy | cross | cross-on | on |
High Tide | 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 | 9:57AM7.77m | 10:15PM7.93m | ||||||||
Low Tide | 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 | 3:56PM0.90m | ||||||||
 |  |  |  | |  | | | | | | | | | | | | | | |  | |
 | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — |
 | — | — | 9:12 | — | — | 9:10 | — | — | 9:08 | — | — | 9:07 | — | — | 9:06 | — | — | 9:04 | — | — | 9:01 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 |
Temp °C | 18 | 18 | 17 | 18 | 18 | 18 | 16 | 17 | 16 | 17 | 16 | 16 | 16 | 18 | 17 | 19 | 24 | 20 | 19 | 19 | 18 |
Feels °C | 17 | 17 | 18 | 17 | 16 | 17 | 11 | 13 | 13 | 13 | 11 | 13 | 12 | 14 | 13 | 16 | 21 | 17 | 17 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | WSW 5 | W 5 | WSW 5 | W 10 | W 10 | W 10 | W 10 | W 5 | W 5 | W 12 | WSW 11 | W 5 | WSW 9 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 8 |
| kJ | 45 | 21 | 13 | 8 | 2 | 8 | 7 | 2 | 13 | 12 | 3 | 12 | 19 | 26 | 23 | 22 | 22 | 12 | 90 | 86 | 80 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 8 | W 8 | W 11 | W 7 | W 10 | W 8 | — | W 9 | W 9 | W 12 | W 5 | WSW 10 | — | WNW 4 | — | ESE 3 | WSW 10 | — | — | — |
| kJ | 1 | 1 | 1 | 2 | 1 | 8 | 1 | — | 2 | 1 | 3 | 1 | 18 | — | 4 | — | 1 | 21 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | W 12 | W 11 | W 8 | W 8 | W 6 | — | — | W 8 | W 8 | W 12 | W 7 | — | — | — | — | — | — | — | — | — |
| kJ | — | 3 | 2 | 1 | 1 | 1 | — | — | 1 | 1 | 3 | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | W 5 | — | — | WSW 5 | W 4 | W 5 | WSW 5 | — | — | W 5 | W 4 | — | W 5 | — | ESE 3 | — | — | — | — | SW 2 |
| kJ | — | 19 | — | — | 13 | 14 | 27 | 36 | — | — | 19 | 7 | — | 12 | — | 3 | — | — | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 136 | 171 | 125 | 172 | 358 | 322 | 358 | 785 | 180 | 359 | 603 | 181 | 181 | 195 | 125 | 366 | 379 | 4 | 2 | 76 | 6 |
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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