Surf Forecasts:
Mewslade Bay surf forecast from 25 Jul 2026:
- Best quality surf: Sunday 26 Jul, 10PM (local time) - 4.5ft (1.3m), 7s period, W swell with cross-offshore winds.
- Most powerful swell: Sunday 26 Jul, 4PM (local time) - 5ft (1.5m), 7s period, W swell with 220 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 10PM (local time) - 4.5ft (1.3m), 7s period with W 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 Sunday (Jul 26) at 10PM. The primary swell is predicted to be 1.3m and 7s period. 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 1.5m 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 0.4m 3s period and expected on Monday (Jul 27) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 26th Jul) | 4.5ft (1.3m) 7s |
| Best Surf | 10PM (Sun 26th Jul) | 4.5ft (1.3m) 7s |
| Most Powerful | 4PM (Sun 26th Jul) | 5ft (1.5m) 7s |
Table - best surf conditions forecast for Mewslade Bay over the next 16 days.
The Lowdown
Alright, let’s break it down. It’s been a quiet one, I’m not gonna lie. The whole 16-day stretch is a struggle for Mewslade Bay. There’s no real swell to speak of for the vast majority of the time, and the water is sitting at a very unusual 68°F – that’s a massive 7°F warmer than average for this time of year, a real oddity.
We start on Saturday, July 25th. The morning is flat with a tiny 0.3ft swell from the SW, and a cross-shore wind. It’s a no-go. The afternoon bumps up to a weak 3ft from the west, but with an onshore wind and a period of just 4 seconds, it’s choppy and messy.
Sunday the 26th sees the best of a bad bunch. The morning brings a 5ft swell from the WSW, clean with a cross-offshore wind, and the combined energy is moderate at 186. The period is a short 7 seconds, so it’s not groundswell, but it’s the most rideable it gets. The afternoon is a bit bigger at 5ft, but the wind swings cross-shore and it gets lumpy.
After that, it’s a long, dry spell. From Monday the 27th right through to the end of the first week of August, the swell drops away to nothing – 0.7ft, 1.0ft, 2ft. The winds are all over the place, and the energy readings are barely into double figures. There’s a moment on the morning of July 30th (Thursday) that’s glassy, but with a 2ft swell from the west, it’s just not enough to surf.
The next slight glimmer is on Tuesday, August 4th. The morning shows a 3ft swell from the SW, with a period of 8 seconds and a clean offshore wind from the NNE. The combined energy is moderate at 120. It’s the most promising reading in the whole outlook, but it’s still a small, weak swell. The afternoon drops to 2ft.
From August 5th onwards, it’s back to tiny, weak, and inconsistent. The swell direction is all over the place, the periods are short, and the wind is rarely favourable. The morning of August 7th has a 0.7ft swell with a 9-second period, which is a long period for such a tiny wave, but it’s useless.
To be honest, for a spot that’s exposed to the SW, this is a proper flat spell. It’s not a place for beginners at the moment, but there’s nothing for anyone. The only day that even looks like you could get a board wet is Sunday the 26th, and even then, you’d be scratching for scraps. It’s a blank run, and that’s how it goes sometimes.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Sun afternoon, min 14°C on Sun night). Winds decreasing (fresh winds from the WNW on Sun morning, light winds from the WSW by Mon night). | Days 4-6 Weather SummarySome drizzle, heaviest during Tue afternoon. Warm (max 24°C on Thu afternoon, min 17°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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 4 | W 4 | WSW 6 | WSW 7 | W 7 | W 6 | W 7 | WSW 6 | WSW 6 | W 6 | W 5 | WSW 5 | W 11 | WSW 5 | W 10 | W 6 | W 5 | W 5 | W 6 | W 5 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 30 | 101 | 186 | 220 | 104 | 70 | 68 | 43 | 22 | 13 | 5 | 2 | 5 | 8 | 25 | 37 | 12 | 33 | 13 | 1 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-off | cross | cross-off | cross | cross-on | cross-on | on | cross | off | cross | cross | cross-off | glassy | cross-on | cross-off | off | cross-off | cross-off |
High Tide | 4:19PM5.96m | 4:51AM6.02m | 5:18PM6.29m | 5:43AM6.38m | 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 | ||||||||
Low Tide | 10:35PM2.61m | 11:02AM2.48m | 11:32PM2.28m | 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 | ||||||||
 | |  |  | |  | |  | | |  | | | | | | |  | | | | |
 | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — |
 | — | — | 9:15 | — | — | 9:15 | — | — | 9:13 | — | — | 9:12 | — | — | 9:10 | — | — | 9:08 | — | — | 9:07 |
mm | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 17 | 18 | 19 | 19 | 16 | 18 | 19 | 20 | 22 | 22 | 22 | 23 | 20 | 20 | 24 | 20 | 24 | 25 | 19 |
Feels °C | 14 | 14 | 15 | 12 | 13 | 17 | 12 | 16 | 20 | 21 | 22 | 22 | 20 | 20 | 18 | 19 | 21 | 18 | 22 | 21 | 15 |
Swell 1 Height (m) Direction Period (s) | W 8 | S 12 | — | — | — | W 6 | W 7 | — | WSW 6 | W 6 | W 5 | WSW 5 | W 5 | W 10 | W 10 | W 10 | W 9 | W 5 | W 6 | W 9 | W 6 |
| kJ | 1 | 3 | — | — | — | 104 | 70 | — | 43 | 22 | 13 | 5 | 2 | 2 | 8 | 2 | 7 | 12 | 33 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | SW 12 | — | — | — | — | — | — | — | — | W 8 | W 8 | W 8 | W 11 | W 8 | W 6 | W 10 | W 8 | W 9 | W 9 | W 9 | W 8 |
| kJ | 6 | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 2 | 1 | 3 | 2 | 1 | 2 | 2 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 11 | W 8 | — | — | — | — | W 7 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | — | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | W 4 | W 4 | WSW 6 | WSW 7 | W 7 | — | — | WSW 6 | — | — | — | — | — | WSW 5 | — | W 6 | W 5 | — | — | W 5 | WNW 3 |
| kJ | 6 | 30 | 101 | 186 | 220 | — | — | 68 | — | — | — | — | — | 5 | — | 25 | 37 | — | — | 13 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 395 | 395 | 435 | 758 | 756 | 1 | 124 | 358 | 113 | 125 | 113 | 125 | 153 | 406 | 181 | 54 | 412 | 195 | 377 | 784 | 322 |
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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