Surf Forecasts:
Mewslade Bay surf forecast from 16 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 7PM (local time) - 0.5ft (0.1m), 19s period, SW swell with 15 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 0.1m 19s and forecast to arrive on Sunday (Jul 19) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Wednesday (Jul 22) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Sun 19th Jul) | 0.5ft (0.1m) 19s |
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 for the next couple of weeks.
Alright, I’ll be straight with you. The outlook for Mewslade Bay is a pretty quiet one for the vast majority of this 16-day window. We’re looking at a long stretch of very small, weak surf, and honestly, there’s not a single day that jumps out as a proper standout. The water is sitting at a balmy 68°F which is a full 8°F warmer than we’d expect for this time of year, which is very unusual.
The first week or so is a write-off. From Thursday the 16th right through to the morning of Sunday the 26th, the swell is tiny – mostly 0.3ft to 0.7ft – with a combined swell energy that barely breaks double digits (values like 15 or 9). It’s just not enough to push a wave through. The wind does offer some glassy or clean windows on the 17th, 18th, and 23rd, but with no wave height to speak of, it’s a flat spell.
We do finally see a pulse of energy arrive around the 27th of July. The swell picks up a bit, hitting 3ft from the WSW with a period of 5 seconds, and the combined energy climbs into the 50s (53-55). The wind is light and cross or cross-off, so conditions are reasonable. It’s still small, but it’s the first real sign of life. This small swell carries through to the 28th, with a morning of gentle offshore winds (NNE, 9 mph) and clean conditions. The energy is moderate at 48. This is the best you’re going to find in this window – a very small, clean wave for the longboard or a foamie.
By the 29th and 30th, the swell actually builds a bit more, hitting 4ft to 4ft from the SW and WSW, with energy jumping to a moderate 128-134. However, the wind turns onshore and ramps up to 19 mph, making it a choppy, blown-out mess. The 31st doesn’t look much better, with strong onshore winds and rain.
So, to be clear, there’s no real standout session here. The only whisper of a surf comes on the 27th and 28th of July, where you'll find small, clean 3ft WSW swell. For the rest of the time, the board is staying in the car.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Thu afternoon, min 14°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). Wind will be generally light. | ||||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||
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 | WSW 8 | SW 7 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 11 | W 19 | W 19 | W 9 | W 18 | W 18 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 7 | 7 | 6 | 7 | 7 | 5 | 5 | 1 | 2 | 7 | 7 | 2 | 6 | 6 | 2 | 8 | 10 | 8 | 7 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | off | glassy | cross | cross-off | glassy | cross-off | cross-off | cross-off | cross-on | off | cross-off | cross-off | off | cross | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 8:42PM8.78m | 9:06AM8.34m | 9:27PM8.66m | 9:50AM8.11m | 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 | ||||||||
Low Tide | 2:28PM0.29m | 2:57AM0.17m | 3:13PM0.36m | 3:41AM0.35m | 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 | ||||||||
 | |  | | | | | | | | | | | | | | |  | | | | |
 | 5:16 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — |
 | — | — | 9:27 | — | — | 9:25 | — | — | 9:24 | — | — | 9:23 | — | — | 9:22 | — | — | 9:22 | — | — | 9:20 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 26 | 24 | 21 | 25 | 20 | 20 | 21 | 21 | 18 | 21 | 19 | 20 | 20 | 21 | 19 | 22 | 17 | 18 | 19 | 16 |
Feels °C | 20 | 22 | 20 | 19 | 23 | 16 | 18 | 16 | 18 | 14 | 17 | 15 | 17 | 15 | 17 | 17 | 18 | 14 | 13 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | W 8 | WSW 8 | NW 4 | SSW 6 | W 8 | W 8 | W 8 | W 8 | N 4 | W 7 | W 7 | W 10 | W 9 | W 8 | W 8 | W 10 | ESE 3 | W 10 | W 10 | W 9 | W 9 |
| kJ | 5 | 7 | 4 | 4 | 5 | 5 | 5 | 5 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 2 | 1 | 8 | 8 | 7 | 6 |
Swell 2 Height (m) Direction Period (s) | W 10 | SW 7 | SW 7 | W 8 | SW 6 | SW 6 | SW 5 | S 5 | NW 4 | — | — | W 7 | — | W 18 | W 11 | W 7 | W 10 | W 7 | W 16 | — | SW 15 |
| kJ | 2 | 2 | 7 | 5 | 1 | 1 | 1 | 1 | 1 | — | — | 1 | — | 6 | 2 | 1 | 8 | 1 | 5 | — | 8 |
Swell 3 Height (m) Direction Period (s) | SW 14 | ESE 2 | W 8 | SW 12 | SW 13 | SW 13 | W 13 | S 11 | W 8 | W 11 | W 19 | W 19 | — | W 11 | W 18 | — | W 7 | SW 16 | — | — | — |
| kJ | 8 | 1 | 6 | 6 | 7 | 7 | 3 | 2 | 1 | 2 | 7 | 7 | — | 2 | 6 | — | 1 | 10 | — | — | — |
Wind waves Height (m) Direction Period (s) | E 3 | ENE 2 | NNE 3 | — | — | NNW 3 | NNW 3 | NW 4 | ENE 4 | E 3 | — | N 3 | — | — | N 3 | E 3 | ENE 3 | N 4 | NNW 3 | NW 4 | NNW 4 |
| kJ | 1 | 1 | 4 | — | — | 4 | 1 | 12 | 16 | 1 | — | 6 | — | — | 6 | 3 | 1 | 6 | 3 | 12 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 206 | 204 | 48 | 299 | 377 | 403 | 384 | 366 | 384 | 180 | 364 | 384 | 366 | 78 | 125 | 180 | 378 | 896 | 318 | 48 | |
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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