Surf Forecasts:
Tenby (South Beach) surf forecast from 11 Sep 2026:
- Best quality surf: Thursday 17 Sep, 7PM (local time) - 7ft (2.1m), 8s period, W swell with offshore winds.
- Most powerful swell: Thursday 17 Sep, 4PM (local time) - 7ft (2.2m), 7s period, W swell with 537 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 7AM (local time) - 5ft (1.5m), 7s 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 Sunday (Sep 13) at 7AM. The primary swell is predicted to be 1.5m and 7s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Tenby (South Beach) in the next 16 days are 2.2m 7s and forecast to arrive on Thursday (Sep 17) at 4PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Saturday (Sep 12) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Sun 13th Sep) | 5ft (1.5m) 7s |
| Best Surf | 7PM (Thu 17th Sep) | 7ft (2.1m) 8s |
| Most Powerful | 4PM (Thu 17th Sep) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for Tenby (South Beach) over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s talk about Tenby (South Beach) in feet and degrees Fahrenheit.
Plain and simple: this is a patchy 16-day outlook, not one for the highlight reel. The one real day to circle is Friday, September 11th.
That morning you’ve got a clean 5ft swell from the WSW with a 9-second interval. The combined wave energy is a moderate 322 – enough to push you around, but not scary. Water temp is a balmy 65°, which is a good 5° warmer than the seasonal average – highly unusual and very welcome. The wind is a gentle 15 km/h offshore out of the NW, so the face is clean. It’s a beginner-friendly size, so grab the foamie. The afternoon drops to about 4ft and the wind goes cross-offshore at 10 km/h, still rideable but a little smaller. Keep your head on a swivel – crowds are a possibility here.
Don’t bother with Saturday (Sept 12th). Fresh cross-winds at 30 km/h and a lumpy, messy sea – absolute waste of time. Sunday (Sept 13th) cleans up with light cross-offshore breeze and surf around 4ft to 5ft, but it’s nothing to write home about.
Monday (Sept 14th) is blown out again. Tuesday through midweek have offshore winds but the swell is tiny – between 2ft and 3ft – and the period is short. Thursday, September 17th sees a spike to 7ft, but with a 7-second period and a stiff 25 km/h offshore wind, it’s a messy, choppy beast. Combined energy hits 537 – that’s strong and lumpy. For a beach break, that’s kite-surf territory, not a clean paddle.
The second week is a long stretch of nothing. From Friday the 18th all the way to the 26th of September, you’ve got tiny waves – mostly under 2ft – and onshore or cross-onshore winds. The wave energy barely reaches triple digits on a couple days; most of the time it’s in the 20–100 range. Not a single day worth getting wet for.
So, bottom line: your only true standout is Friday morning, September 11th. That’s the cleanest, warmest, most user-friendly session. Everything else is a flat, blown-out, or skunked-out wait. Don’t bank on the long-range stuff – it looks very quiet for Tenby.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat morning. Very mild (max 18°C on Sun morning, min 14°C on Fri night). Winds decreasing (fresh winds from the SW on Sat morning, light winds from the SW by Sun night). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Mon night. Very mild (max 19°C on Mon morning, min 13°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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) | WSW 9 | WSW 9 | WSW 8 | W 15 | WSW 7 | WSW 7 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | W 8 | WSW 8 | WSW 8 | W 8 | W 6 | W 9 | W 10 | W 5 | W 7 | W 7 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 322 | 213 | 119 | 5 | 320 | 349 | 341 | 248 | 146 | 194 | 52 | 146 | 110 | 33 | 95 | 186 | 0 | 0 | 382 | 537 | 320 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross | off | off | off | off | cross-off | cross-off | off | off | off |
High Tide | 7:20PM8.27m | 7:40AM8.07m | 7:57PM8.36m | 8:15AM8.10m | 8:32PM8.22m | 8:50AM7.93m | 9:07PM7.89m | 9:23AM7.60m | 9:40PM7.40m | 9:56AM7.13m | 10:15PM6.83m | 10:31AM6.58m | 10:52PM6.21m | ||||||||
Low Tide | 1:15PM0.21m | 1:37AM0.00m | 1:51PM0.05m | 2:11AM-0.01m | 2:25PM0.09m | 2:44AM0.17m | 2:57PM0.31m | 3:15AM0.52m | 3:30PM0.68m | 3:46AM0.98m | 4:02PM1.17m | 4:18AM1.52m | 4:37PM1.74m | ||||||||
 |  |  |  |  |  | | |  | | | |  | |  | | | | | | | |
 | 6:46 | — | — | 6:47 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — |
 | — | 7:44 | — | — | 7:40 | — | — | 7:38 | — | — | 7:37 | — | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — |
mm | — | — | — | 1 | — | 1 | — | — | 1 | — | — | 2 | 2 | — | — | — | — | 1 | — | — | — |
Temp °C | 16 | 17 | 16 | 17 | 17 | 17 | 18 | 18 | 18 | 19 | 19 | 18 | 16 | 16 | 15 | 14 | 14 | 15 | 15 | 15 | 14 |
Feels °C | 14 | 15 | 12 | 13 | 13 | 14 | 17 | 16 | 18 | 17 | 17 | 17 | 12 | 11 | 12 | 10 | 10 | 10 | 10 | 9 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 9 | WSW 9 | WSW 8 | — | SW 15 | — | WSW 10 | WSW 10 | WSW 9 | SW 12 | W 8 | WSW 8 | WSW 8 | W 8 | W 6 | W 9 | — | — | — | — | W 7 |
| kJ | 322 | 213 | 119 | — | 8 | — | 341 | 248 | 146 | 6 | 52 | 146 | 110 | 33 | 95 | 186 | — | — | — | — | 320 |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 15 | W 15 | — | SW 13 | SW 13 | S 13 | — | SW 12 | SW 12 | W 11 | W 10 | WSW 10 | — | — | — | — | — | — |
| kJ | — | — | — | 5 | 4 | — | 7 | 7 | 3 | — | 6 | 6 | 2 | 18 | 31 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | S 12 | S 12 | — | S 11 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | — | 2 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | WSW 6 | WSW 7 | WSW 7 | — | — | SW 3 | WSW 9 | WSW 6 | — | NW 3 | W 6 | NNW 4 | NNW 4 | W 10 | W 5 | W 7 | W 7 | — |
| kJ | — | — | — | 139 | 320 | 349 | — | — | 3 | 194 | 72 | — | 2 | 62 | 10 | 12 | 230 | 95 | 382 | 537 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 111 | 127 | 334 | 230 | 0 | 0 | 28 | 127 | 127 | 100 | 30 | 30 | 46 | 339 | 613 | 369 | 369 | 0 | |
Best forecast wave conditions in Wales - Pembrokeshire | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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‘Porth Neigwl: Choppy waves hadn't tidied much (from what I could see in the dark.’
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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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