Surf Forecasts:
Tenby (South Beach) surf forecast from 8 Aug 2026:
- Best quality surf: Thursday 13 Aug, 10AM (local time) - 3ft (0.9m), 11s period, WSW swell with glassy winds.
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 3ft (0.9m), 11s period, WSW swell with 198 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 10AM (local time) - 3ft (0.9m), 11s period with WSW swell.
Best Forecast Surf Conditions for Tenby (South Beach) this week:
The surf forecast for Tenby (South Beach) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 13) at 10AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.5m and 11s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Tenby (South Beach) in the next 16 days are 0.9m 11s and forecast to arrive on Thursday (Aug 13) at 10AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Thursday (Aug 13) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Thu 13th Aug) | 3ft (0.9m) 11s |
| Best Surf | 10AM (Thu 13th Aug) | 3ft (0.9m) 11s |
| Most Powerful | 10AM (Thu 13th Aug) | 3ft (0.9m) 11s |
Table - best surf conditions forecast for Tenby (South Beach) over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s coming up. For the first week or so, honestly, it's pretty grim. We’re looking at a long stretch of flat, weak, or just messy conditions. The swell is tiny, the winds are often onshore, and the wave energy is in the single digits most days. It’s not until Thursday the 13th of August that we finally see a pulse of life, and even then, it’s just barely surfable. The real standout doesn’t show until Tuesday the 18th of August.
Alright, let’s get into it. The first real glimmer of hope is on Thursday the 13th of August, at Tenby (South Beach). The morning glass-off is a major bonus – the wind is dead calm, and the water is flat glassy. The swell is a small 2.9 ft from the WSW, with a period of 11 seconds, giving it a bit of groundswell punch. The combined energy is a moderate 256, so there’s some actual push behind it. It’s a beginner-friendly break, so the small size is perfect for a learner. The water temperature is about average for this time of year, so nothing wild there. Be aware, crowds are possible at this spot.
Now, the big one. The true standout is Tuesday the 18th of August. Both the morning and afternoon are looking excellent. The swell picks up to 6.9 ft from the W, with a period of 8 seconds. That’s a solid, punchy little swell. The combined wave energy jumps up to a strong 542 in the morning and 548 in the afternoon. That’s proper grunt. The wind is offshore or cross-off from the NNW, which means clean, peeling faces. For a beginner spot, this is starting to get a bit too big – 6.9 ft is pushing into intermediate territory, but for anyone with a bit of experience, it’s going to be firing. The water temp is still sitting around average.
After that, the swell drops off again quickly into Wednesday the 19th and the rest of the forecast, so that Tuesday is definitely the one to circle on the calendar. It’s a long way out, so keep an eye on it, but it’s the best on offer.
Short Range ForecastMostly dry. Warm (max 23°C on Mon afternoon, min 13°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Wed afternoon, min 17°C on Mon night). Winds decreasing (fresh winds from the ESE on Wed morning, calm by Thu morning). | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
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 9 | WSW 8 | SW 7 | WSW 6 | SW 12 | WSW 6 | W 5 | SW 6 | SW 7 | ESE 4 | W 9 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 11 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 6 | 12 | 6 | 6 | 4 | 7 | 7 | 7 | 10 | 7 | 41 | 104 | 96 | 140 | 198 | 169 | 118 | 62 | 57 | 33 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | off | cross-off | cross-off | off | cross-off | off | cross | on | on | cross-on | on | on | glassy | glassy | off | cross-off | cross-off | off | cross-off |
High Tide | 2:34PM6.03m | 3:18AM6.07m | 3:58PM6.26m | 4:37AM6.40m | 5:09PM6.79m | 5:42AM6.91m | 6:07PM7.40m | 6:34AM7.42m | 6:56PM7.93m | 7:21AM7.81m | 7:41PM8.30m | 8:03AM8.03m | 8:22PM8.43m | ||||||||
Low Tide | 8:12AM2.17m | 8:59PM2.14m | 9:43AM2.07m | 10:27PM1.82m | 11:00AM1.65m | 11:36PM1.27m | 12:00PM1.11m | 00:31AM0.71m | 12:50PM0.61m | 1:18AM0.26m | 1:34PM0.24m | 2:00AM-0.00m | 2:15PM0.07m | 2:40AM-0.04m | |||||||
 |  |  | |  | | | | | | | | | | | | | | | | | |
 | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 6:01 | — | — |
 | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:44 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 21 | 18 | 20 | 20 | 18 | 21 | 23 | 20 | 22 | 26 | 23 | 24 | 28 | 23 | 25 | 26 | 20 | 19 | 19 | 17 |
Feels °C | 15 | 19 | 16 | 17 | 17 | 17 | 20 | 21 | 17 | 18 | 23 | 21 | 19 | 24 | 21 | 22 | 23 | 19 | 15 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | W 9 | WSW 8 | SW 7 | WSW 6 | SW 6 | W 3 | W 5 | SW 6 | SW 7 | SW 6 | SW 6 | WSW 11 | WSW 10 | WSW 10 | WSW 9 | WSW 11 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | W 8 |
| kJ | 6 | 6 | 12 | 4 | 2 | 2 | 7 | 7 | 7 | 6 | 1 | 41 | 104 | 96 | 140 | 198 | 169 | 118 | 62 | 57 | 33 |
Swell 2 Height (m) Direction Period (s) | — | W 9 | W 9 | W 8 | W 8 | WSW 6 | SW 6 | W 5 | W 8 | W 8 | W 9 | S 4 | SW 6 | ESE 4 | — | W 11 | — | — | W 5 | — | — |
| kJ | — | 2 | 2 | 1 | 1 | 4 | 5 | 4 | 1 | 5 | 7 | 1 | 1 | 11 | — | 58 | — | — | 18 | — | — |
Swell 3 Height (m) Direction Period (s) | SW 8 | — | S 11 | SW 12 | SW 12 | W 8 | W 8 | W 8 | — | W 10 | W 13 | SW 6 | SW 6 | SW 6 | — | — | — | — | — | — | — |
| kJ | 3 | — | 2 | 6 | 6 | 1 | 1 | 1 | — | 2 | 3 | 1 | 1 | 1 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | WSW 2 | WNW 3 | — | WNW 5 | NNE 3 | ESE 4 | ESE 4 | SE 3 | ESE 4 | — | — | — | WNW 3 | — | — | NW 3 | NNW 3 |
| kJ | — | — | — | — | 1 | 2 | — | 8 | 1 | 10 | 4 | 2 | 17 | — | — | — | 3 | — | — | 3 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 336 | 336 | 181 | 181 | 368 | 181 | 128 | 181 | 181 | 372 | 348 | 29 | 64 | 28 | 8 | 0 | 150 | 8 | 30 | 426 | 25 |
Best forecast wave conditions in Wales - Pembrokeshire | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Tenby (South Beach) Surf forecast
The above surf forecast table for Tenby (South Beach) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Tenby (South Beach) can be found by selecting the local surf guide option on the grey menu. Our Tenby (South Beach) 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 (Tenby (South Beach)) 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 Tenby (South Beach) 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.
Are you planning a holiday in Wales - Pembrokeshire? If you are looking for accommodation near Tenby (South Beach), camping, hotels and holiday cottages in Wales - Pembrokeshire, consider staying in Pembroke which is 15 km (9 miles) away. Other places in and around Wales - Pembrokeshire where you can find information about places to rent, and car hire include Milford Haven which is 23 km (14 miles) away, Carmarthen, Fishguard and Aberporth.
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