Surf Forecasts:
Mewslade Bay surf forecast from 18 Jul 2026:
- Most powerful swell: Saturday 25 Jul, 7AM (local time) - 5ft (1.5m), 7s period, W swell with 214 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 1.5m 7s and forecast to arrive on Saturday (Jul 25) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Wednesday (Jul 22) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Sat 25th Jul) | 5ft (1.5m) 7s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on offer here at Mewslade Bay. I’m not gonna lie to you, it’s a tough watch. The next couple of weeks are looking pretty flat, with only a tiny flicker of hope right at the end of the first week. We’ve got a long dry spell to get through first.
The water’s sitting at a balmy 68°, which is a massive 8° warmer than usual for this time of year. That’s seriously unusual, almost like bathwater, but don’t get your hopes up for the waves to match.
For the first week, from Saturday the 18th right through to Friday the 24th of July, it’s a complete write-off. Swell heights are barely a whisper, mostly less than 1ft. The wave energy is pitiful, with the combined energy reading just single or low double digits. You’re looking at a lot of glassy mornings, like Monday the 20th and Thursday the 23rd, which would be perfect if there was anything to ride, but there isn’t. The wind shifts around, but honestly, it doesn’t matter when there’s no swell.
Now, there is a glimmer. On Saturday morning, the 25th of July, we finally see a pulse of energy. The swell pushes up to about 5ft from the west, with a period of 7 seconds. The combined energy jumps to 205 (moderate), which is the only real number we’ve seen. The wind is a clean cross-off from the NNW, so the surface should be tidy. This is your one and only standout window. It’s not a massive swell, but it’s the only game in town. That 5ft is right on the edge of being too much for beginners, but it’s manageable.
After that, it drops off again. The rest of the 25th and into the following week, the swell fades back to nothing. There are a few more clean, cross-off mornings, like the 30th and 31st of July, but with the swell barely a ripple, it’s just a nice day to be on the beach, not in the water. For the first week of August, it’s the same story – tiny, powerless waves. It’s a long, dry stretch.
So, bottom line: if you’re desperate, you’ve got one shot on Saturday the 25th of July. It’s not going to be epic, but it’s the only thing that’s even close. For the rest of the 16 days, it’s a flat spell. Don’t bother packing the boards until that Saturday morning.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Sat afternoon, min 15°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Tue afternoon, min 14°C on Tue night). Winds decreasing (fresh winds from the NNW on Wed afternoon, calm by Thu morning). | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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 8 | W 8 | S 12 | W 7 | W 19 | W 19 | W 9 | SW 18 | W 18 | W 11 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | W 14 | SW 13 | W 3 | W 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 5 | 3 | 1 | 7 | 7 | 2 | 12 | 6 | 2 | 2 | 10 | 7 | 7 | 6 | 8 | 6 | 4 | 7 | 8 | 39 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | off | cross | cross-on | off | glassy | cross-off | off | cross | cross | cross-off | cross-off | cross-off | off | glassy | cross | cross-off | cross | cross-on | cross |
High Tide | 10:10PM8.34m | 10:33AM7.74m | 10:54PM7.85m | 11:17AM7.27m | 11:38PM7.27m | 12:02PM6.78m | 00:26AM6.68m | 12:53PM6.31m | 1:21AM6.18m | 1:54PM5.96m | 2:29AM5.85m | 3:07PM5.83m | 3:44AM5.81m | ||||||||
Low Tide | 3:56PM0.60m | 4:24AM0.69m | 4:39PM0.98m | 5:07AM1.15m | 5:22PM1.45m | 5:51AM1.66m | 6:09PM1.94m | 6:39AM2.15m | 7:04PM2.39m | 7:36AM2.55m | 8:09PM2.70m | 8:45AM2.76m | 9:24PM2.78m | ||||||||
 | |  | | | | | |  | | | |  | | | | | | | | | |
 | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:28 | — | — |
 | — | — | 9:24 | — | — | 9:23 | — | — | 9:22 | — | — | 9:22 | — | — | 9:20 | — | — | 9:19 | — | — | 9:17 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 21 | 19 | 18 | 20 | 19 | 19 | 20 | 19 | 20 | 22 | 20 | 18 | 20 | 17 | 18 | 21 | 19 | 19 | 20 | 18 |
Feels °C | 16 | 18 | 17 | 15 | 15 | 16 | 17 | 16 | 17 | 18 | 18 | 17 | 13 | 14 | 15 | 17 | 18 | 17 | 15 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | NW 4 | W 7 | — | W 10 | W 9 | W 8 | W 8 | W 11 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | W 8 | W 8 | SW 13 | W 8 |
| kJ | 5 | 5 | 4 | 1 | — | 2 | 2 | 1 | 1 | 2 | 2 | 8 | 7 | 7 | 6 | 6 | 6 | 1 | 1 | 7 | 1 |
Swell 2 Height (m) Direction Period (s) | — | SW 5 | W 8 | NW 4 | W 7 | W 7 | — | SW 18 | W 11 | W 7 | W 7 | W 7 | — | — | W 15 | SW 15 | W 14 | W 14 | SW 13 | — | — |
| kJ | — | 1 | 1 | 1 | 1 | 1 | — | 12 | 2 | 1 | 1 | 1 | — | — | 4 | 8 | 4 | 4 | 7 | — | — |
Swell 3 Height (m) Direction Period (s) | SW 5 | S 11 | S 12 | — | W 19 | W 19 | — | W 11 | W 18 | — | — | SW 16 | — | — | — | W 15 | — | — | W 13 | — | — |
| kJ | 1 | 2 | 3 | — | 7 | 7 | — | 2 | 6 | — | — | 10 | — | — | — | 4 | — | — | 3 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NE 3 | ESE 3 | NNE 2 | N 3 | — | — | NNW 4 | — | — | NNW 3 | N 4 | NW 4 | NNW 4 | NNW 3 | — | NW 3 | — | W 3 | W 5 |
| kJ | — | — | 3 | 3 | 1 | 3 | — | — | 5 | — | — | 4 | 9 | 21 | 12 | 2 | — | 3 | — | 8 | 39 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 429 | 429 | 48 | 384 | 326 | 366 | 191 | 191 | 366 | 125 | 180 | 198 | 384 | 756 | 198 | 78 | 465 | 364 | 387 | 947 | 299 |
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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