Surf Forecasts:
Tenby (South Beach) surf forecast from 12 Sep 2026:
- Best quality surf: Sunday 13 Sep, 7AM (local time) - 5.5ft (1.7m), 10s period, WSW swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 4AM (local time) - 7.5ft (2.3m), 7s period, WSW swell with 588 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 4AM (local time) - 5ft (1.6m), 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 4AM. The primary swell is predicted to be 1.6m and 7s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Tenby (South Beach) in the next 16 days are 2.3m 7s and forecast to arrive on Saturday (Sep 19) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Friday (Sep 18) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 13th Sep) | 5ft (1.6m) 7s |
| Best Surf | 7AM (Sun 13th Sep) | 5.5ft (1.7m) 10s |
| Most Powerful | 4AM (Sat 19th Sep) | 7.5ft (2.3m) 7s |
Table - best surf conditions forecast for Tenby (South Beach) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a proper look at what’s on the cards for the next couple of weeks.
Right, straight up, this is a tough outlook. We’ve got a long, long gap with no surf worth paddling out for. It’s not until Monday the 23rd of September that we finally see something, and even then, it’s a real stretch. That’s over a week and a half of flat or junk conditions to sit through. For Tenby, that’s a pretty normal blank run – it happens.
So, when things finally do show up, we’re looking at Tenby (South Beach) . On Monday the 23rd of September morning, we get a 7ft swell from the WSW with a short period of 7 seconds. The wind is light and cross-onshore from the ESE at 6 mph. The combined energy is moderate, sitting at 485. It’s a light wind day, so the surface won't be too chopped up, but that short period and cross-onshore wind mean it’s going to be lumpy and hard to get a decent ride. It’s surfable, but just barely. The afternoon is a carbon copy at 8ft (572 energy), so same story. The water temp on the 12th was 65°, which is 5° above normal – much warmer than you'd expect for mid-September, so you can get away with a thinner spring suit.
There is a pulse of bigger, cleaner-looking swell on Saturday the 21st of September (7ft with 755 energy) but the wind is a fresh cross-offshore from the W at 16 mph. That sounds promising, but the file says it’s poor surf conditions. The wind is just too strong, making it a battle.
If you want the absolute best on offer across the whole 16 days, you have to look at the tail end. Sunday the 22nd of September afternoon shows a tiny 3ft swell but with light cross-offshore wind from the WSW at 12 mph. It’s small, but it’s clean. That’s the standout window for a beginner or someone wanting a smooth, cruisy session on a log. At 3ft, it's perfect for learning.
Honestly, pick your days carefully. The opening week is a write-off. The 23rd is for the desperate, and the 22nd is for the patient and those on a foamie.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Sat night. Very mild (max 19°C on Sun morning, min 15°C on Mon night). Winds decreasing (fresh winds from the SW on Sat afternoon, light winds from the WSW by Sat night). | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Very mild (max 16°C on Tue afternoon, min 12°C on Tue night). Mainly fresh winds. | |||||||||||||||||||
Sat 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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 7 | WSW 7 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | WSW 9 | WSW 7 | W 7 | W 8 | W 11 | WSW 10 | W 10 | W 6 | W 7 | W 8 | WSW 6 | W 13 | WSW 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 516 | 273 | 358 | 289 | 193 | 194 | 173 | 16 | 198 | 166 | 257 | 498 | 173 | 73 | 176 | 157 | 57 | 82 | 14 | 520 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | off | off | off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 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 | 11:11AM6.00m | 11:37PM5.61m | |||||||
Low Tide | 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 | 4:54AM2.09m | 5:20PM2.32m | ||||||||
 |  |  |  |  | | |  | | |  | | | | | |  | | | | |
 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — |
 | 7:40 | — | — | 7:38 | — | — | 7:37 | — | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — |
mm | — | 8 | — | — | 1 | — | — | 2 | — | — | — | — | — | 2 | — | — | — | — | — | 3 |
Temp °C | 17 | 17 | 19 | 19 | 18 | 18 | 18 | 18 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 17 |
Feels °C | 13 | 15 | 18 | 18 | 18 | 16 | 16 | 16 | 13 | 10 | 13 | 10 | 10 | 12 | 9 | 9 | 10 | 11 | 10 | 12 |
Swell 1 Height (m) Direction Period (s) | — | W 10 | WSW 10 | WSW 10 | WSW 9 | SW 12 | SW 12 | WSW 9 | W 11 | — | W 8 | W 11 | WSW 10 | W 10 | W 10 | W 10 | W 8 | W 10 | W 13 | — |
| kJ | — | 52 | 358 | 289 | 193 | 6 | 6 | 16 | 2 | — | 257 | 498 | 173 | 73 | 17 | 17 | 57 | 17 | 14 | — |
Swell 2 Height (m) Direction Period (s) | — | — | SW 13 | SW 13 | SW 13 | — | — | W 12 | — | — | — | WSW 12 | — | — | — | — | — | W 14 | — | — |
| kJ | — | — | 7 | 7 | 7 | — | — | 3 | — | — | — | 47 | — | — | — | — | — | 15 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 12 | — | — | — | — | — | — | — | — | — | S 12 | — | — |
| kJ | — | — | — | — | — | — | — | 6 | — | — | — | — | — | — | — | — | — | 3 | — | — |
Wind waves Height (m) Direction Period (s) | WSW 7 | WSW 7 | — | — | — | WSW 9 | WSW 8 | WSW 6 | WSW 7 | W 7 | NW 3 | NNW 6 | W 6 | WSW 5 | W 6 | W 7 | W 6 | WSW 6 | WSW 5 | WSW 7 |
| kJ | 516 | 273 | — | — | — | 194 | 173 | 116 | 198 | 166 | 5 | 39 | 69 | 47 | 176 | 157 | 66 | 82 | 86 | 520 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 329 | 127 | 126 | 0 | 103 | 127 | 127 | 122 | 129 | 369 | 46 | 0 | 17 | 383 | 369 | 369 | 450 | 364 | 329 | 625 |
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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