Surf Forecasts:
Caswell Bay surf forecast from 20 Jul 2026:
- Best quality surf: Sunday 26 Jul, 10PM (local time) - 3.5ft (1.0m), 6s period, W swell with cross-offshore winds.
- Most powerful swell: Sunday 26 Jul, 7PM (local time) - 3.5ft (1.1m), 7s period, W swell with 104 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 10PM (local time) - 3.5ft (1.0m), 6s period with W swell.
Best Forecast Surf Conditions for Caswell Bay this week:
The surf forecast for Caswell 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 1.0m and 6s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Caswell Bay in the next 16 days are 1.1m 7s and forecast to arrive on Sunday (Jul 26) 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 0.5m 4s period and expected on Wednesday (Jul 22) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sun 26th Jul) | 3.5ft (1.0m) 6s |
| Best Surf | 10PM (Sun 26th Jul) | 3.5ft (1.0m) 6s |
| Most Powerful | 7PM (Sun 26th Jul) | 3.5ft (1.1m) 7s |
Table - best surf conditions forecast for Caswell Bay over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s be straight with you about this stretch. We’ve got a long, quiet spell ahead, then a brief pulse of more size right at the end of the first week into the second, but it’s not going to be classic.
The outlook starts with a long gap. From now through the morning of Thursday, 31st July, we’re looking at a full 10 days of pretty much nothing. The swell is tiny, most of the time under 1ft, with weak combined energy (mostly under 10). The water’s running warm at 69°F – that’s much warmer than normal for this time of year, so you’ll be comfortable in a spring suit, but there’s no wave to enjoy it in. The wind is often cross-onshore or choppy, and even when it goes glassy, there’s just no push.
The only real stand-out window arrives on Thursday, 31st July. The swell bumps up to 5ft from the WSW, with a period of 8 seconds. The combined energy hits 322 – that’s a solid, moderate push. The wind is offshore, blowing from the ESE at 12 mph, keeping the surface clean. That morning at Caswell Bay could finally offer something rideable for the experienced crew. The swell direction is a good match for the optimum SW direction, and the clean conditions will make it look better than it has in weeks. It’s a fairly consistent break, but be aware crowds are often an issue here, so expect company.
That afternoon, the swell drops to 4ft from the same direction, still with 8 seconds and energy at 206. The wind shifts lighter NNE at 6 mph, still cross-off and clean. It’s a decent second half of the day, but the morning is the pick.
After that, the swell fades quickly through the weekend into early August, dropping back under 3ft by Saturday, 1st August, with energy falling away fast. The wind turns onshore, and we’re back to poor conditions. There’s a small bump again on Monday, 3rd August and Tuesday, 4th, with swell up to 5ft from the WSW, period climbing to 7 seconds, and energy hitting 199. But the wind is onshore and strong, 15–18 mph, making it choppy and messy. That setup, with a beach break and strong wind, looks more interesting for kite surfing than paddle surfing.
So, bottom line: if you’ve got the patience, the morning of Thursday, 31st July is your best bet. After that, it’s slim pickings again. Don’t expect much else in this 16-day window.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Tue afternoon, min 14°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Thu afternoon, min 14°C on Sat night). Winds increasing (calm on Thu morning, fresh winds from the W by Sat morning). | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
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 12 | W 11 | W 11 | W 11 | W 10 | W 16 | W 10 | W 9 | W 9 | W 9 | W 8 | W 8 | W 13 | W 8 | W 3 | W 4 | W 4 | WSW 6 | W 6 | W 6 | W 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3 | 2 | 2 | 2 | 2 | 5 | 8 | 7 | 6 | 6 | 1 | 1 | 3 | 1 | 1 | 3 | 12 | 58 | 55 | 98 | 66 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | cross | cross-on | cross-off | cross-off | on | cross-off | glassy | cross-on | cross-off | cross-on | cross-on | cross-off | cross-on | cross-on | cross-off | cross | cross-off | cross-off |
High Tide | 11:23AM8.43m | 11:40PM8.45m | 12:03PM7.96m | 00:23AM7.94m | 12:51PM7.52m | 1:15AM7.47m | 1:53PM7.20m | 2:22AM7.17m | 3:07PM7.14m | 3:36AM7.15m | 4:18PM7.38m | 4:45AM7.40m | 5:18PM7.78m | ||||||||
Low Tide | 5:21PM2.03m | 5:48AM2.25m | 6:03PM2.48m | 6:32AM2.72m | 6:55PM2.92m | 7:29AM3.13m | 8:02PM3.24m | 8:40AM3.34m | 9:16PM3.29m | 9:53AM3.26m | 10:24PM3.08m | 10:57AM2.97m | 11:22PM2.74m | ||||||||
 | |  | | | |  | | | | | | | |  | |  | | | | | |
 | 5:20 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | 5:26 | — | — | 5:28 | — | — | 5:28 | — | — |
 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:17 | — | — | 9:16 | — | — | 9:15 | — | — | 9:14 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 22 | 19 | 21 | 23 | 19 | 19 | 23 | 21 | 21 | 24 | 20 | 21 | 22 | 20 | 18 | 17 | 17 | 19 | 20 | 17 |
Feels °C | 17 | 18 | 17 | 20 | 19 | 15 | 19 | 22 | 19 | 20 | 21 | 18 | 17 | 19 | 17 | 14 | 14 | 15 | 16 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 8 | W 8 | W 11 | W 10 | W 10 | W 10 | W 9 | NW 4 | W 9 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | — | WSW 6 | W 6 | W 6 | W 6 |
| kJ | 2 | 1 | 1 | 2 | 2 | 2 | 8 | 7 | 2 | 6 | 1 | 1 | 1 | 1 | 1 | 1 | — | 58 | 55 | 98 | 66 |
Swell 2 Height (m) Direction Period (s) | — | — | W 11 | W 7 | W 7 | W 7 | — | — | W 9 | W 15 | — | — | W 13 | — | — | — | — | — | — | — | — |
| kJ | — | — | 2 | 1 | 1 | 1 | — | — | 6 | 4 | — | — | 3 | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 12 | W 11 | — | — | — | W 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 3 | 2 | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | NW 4 | — | — | NW 4 | NNW 3 | WNW 3 | — | — | — | — | — | — | W 3 | W 4 | W 4 | — | — | NW 3 | — |
| kJ | — | — | 3 | — | — | 3 | 1 | 1 | — | — | — | — | — | — | 1 | 3 | 12 | — | — | 3 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 201 | 843 | 369 | 85 | 189 | 195 | 395 | 393 | 126 | 134 | 568 | 365 | 445 | 899 | 440 | 412 | 769 | 12 | 576 | 2 | 2 |
Best forecast wave conditions in Wales - Gower | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Caswell Bay Surf forecast
The above surf forecast table for Caswell Bay provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Caswell Bay can be found by selecting the local surf guide option on the grey menu. Our Caswell 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 (Caswell 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 Caswell 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.
Caswell Bay is 9 km (6 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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