Surf Forecasts:
Tenby (South Beach) surf forecast from 29 Aug 2026:
- Best quality surf: Monday 31 Aug, 1PM (local time) - 7ft (2.2m), 9s period, W swell with offshore winds.
- Most powerful swell: Monday 31 Aug, 1AM (local time) - 10ft (3.0m), 9s period, WSW swell with 1,266 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 1PM (local time) - 7ft (2.2m), 9s period with W 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 Monday (Aug 31) at 1PM. The primary swell is predicted to be 2.2m and 9s period with a secondary swell of 2.2m and 9s. 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 3.0m 9s and forecast to arrive on Monday (Aug 31) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Wednesday (Sep 02) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Mon 31st Aug) | 7ft (2.2m) 9s |
| Best Surf | 1PM (Mon 31st Aug) | 7ft (2.2m) 9s |
| Most Powerful | 1AM (Mon 31st Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Tenby (South Beach) over the next 16 days.
The Lowdown
Alright, surf crew, this is Rusty. Let's talk about what we've got coming up for Tenby. It’s a bit of a mixed bag, so let's break it down.
Right off the bat, we got a tough start with some real small, poor surf. The first few days are a write-off, honestly. The water is sitting at a balmy 67°, which is a good 5° warmer than usual for the tail end of August, so that’s a bit of a treat if you’re just going for a dip.
Our first real chance to get wet comes on Saturday the 29th afternoon. It’s not going to be pretty, with a lumpy 5ft swell from the SW but an offshore NW wind will make it clean. The following Monday, the 31st, is our first real standout. We’ve got a moderate 7ft SW groundswell with a solid 9-second period pushing through, with a clean offshore wind from the NW all day. The combined energy is solid, so there’s some push behind it. This is the window to aim for.
After that, the surf goes flat and messy for a week straight. It’s a long dry spell.
Now, here’s something to keep an eye on. Around the 7th and 8th of September, a much bigger pulse is due. On the 7th afternoon we see a 10ft swell from the SW and by Tuesday the 8th we’re looking at a serious 16 to 18ft swell from the WSW with an 11-second period. The combined energy numbers are massive, so that’s some serious ocean energy. This is way too big for beginners and only for experienced surfers on the right board. The wind looks like it’ll be cross-off from the WNW, which is alright, but with that much water moving around it’ll be a handful. Still, it’s the best of the big stuff on offer, just be aware that a long-period groundswell like this can break a bit too straight on a beach, so look for a bank that can handle it.
The days after that drop back down to average 3-5ft surf, but the wind turns onshore, so it doesn’t look great for the tail end of the run.
For the whole 16 days, keep your eyes on Monday 31st morning for a clean, fun-sized wave. Then, if you’ve got the skills, Tuesday 8th September is the big-swell day to be out there. Just be ready for some serious power.
Stay stoked.
Rusty.
Short Range ForecastHeavy rain (total 29mm), heaviest during Fri night. Very mild (max 19°C on Sat morning, min 14°C on Sun night). Winds increasing (calm on Sat morning, fresh winds from the SW by Sun afternoon). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Tue night. Very mild (max 19°C on Wed afternoon, min 15°C on Wed night). Winds increasing (light winds from the WSW on Mon night, fresh winds from the WSW by Wed night). | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | SW 6 | SW 8 | WSW 9 | WSW 9 | SW 8 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | S 18 | W 9 | SW 16 | W 8 | WSW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 6 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 109 | 314 | 591 | 411 | 517 | 1266 | 938 | 605 | 271 | 6 | 14 | 10 | 11 | 471 | 623 | 441 | 398 | 280 | 206 | 0 | 931 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-on | cross | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 7:47AM7.62m | 8:03PM7.99m | 8:20AM7.82m | 8:36PM8.09m | 8:53AM7.86m | 9:10PM8.01m | 9:28AM7.74m | 9:47PM7.76m | 10:06AM7.45m | 10:27PM7.34m | 10:49AM7.01m | 11:14PM6.79m | 11:41AM6.49m | 00:15AM6.20m | |||||||
Low Tide | 1:56PM0.43m | 2:16AM0.29m | 2:27PM0.30m | 2:47AM0.25m | 2:59PM0.32m | 3:19AM0.36m | 3:33PM0.49m | 3:54AM0.64m | 4:11PM0.82m | 4:33AM1.07m | 4:54PM1.29m | 5:21AM1.60m | 5:51PM1.83m | ||||||||
 | |  |  | |  |  |  |  | | |  |  | |  | | |  | |  | | |
 | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — |
 | — | 8:13 | — | — | 8:10 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:01 | — | — | 7:59 | — |
mm | 6 | 2 | 1 | 4 | 5 | 4 | — | — | — | — | — | 2 | 1 | 1 | — | — | — | — | 2 | — | — |
Temp °C | 19 | 19 | 16 | 18 | 18 | 15 | 15 | 16 | 16 | 18 | 18 | 17 | 17 | 19 | 17 | 17 | 17 | 16 | 17 | 18 | 16 |
Feels °C | 21 | 18 | 14 | 15 | 14 | 12 | 10 | 12 | 14 | 14 | 14 | 16 | 13 | 15 | 12 | 11 | 11 | 10 | 13 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SW 8 | — | — | — | — | WSW 9 | WSW 9 | — | S 18 | W 9 | SW 16 | W 8 | — | SW 15 | SSW 15 | SSW 15 | WSW 8 | SSW 14 | — | — |
| kJ | 109 | 314 | — | — | — | — | 938 | 605 | — | 6 | 14 | 10 | 11 | — | 9 | 21 | 23 | 280 | 20 | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNW 5 | — | — | SW 18 | SW 16 | — | — | — | — | — | SSW 15 | — | — | — |
| kJ | — | — | — | — | — | — | — | 5 | — | — | 12 | 10 | — | — | — | — | — | 22 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 4 | — | WSW 9 | WSW 9 | SW 8 | WSW 9 | — | — | WSW 9 | WSW 6 | WSW 6 | WSW 6 | SW 5 | WSW 7 | WSW 8 | WSW 8 | WSW 8 | — | WSW 8 | WSW 6 | WSW 8 |
| kJ | 11 | — | 591 | 411 | 517 | 1266 | — | — | 271 | 94 | 119 | 94 | 79 | 471 | 623 | 441 | 398 | — | 206 | 188 | 931 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 173 | 175 | 127 | 79 | 390 | 5 | 162 | 5 | 0 | 127 | 127 | 103 | 120 | 339 | 230 | 904 | 339 | 393 | 127 | 172 | 5 |
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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