Surf Forecasts:
Tenby (South Beach) surf forecast from 23 Aug 2026:
- Best quality surf: Thursday 27 Aug, 10PM (local time) - 5ft (1.5m), 9s period, SW swell with offshore winds.
- Most powerful swell: Saturday 29 Aug, 7AM (local time) - 6ft (1.8m), 7s period, W swell with 348 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 10PM (local time) - 5ft (1.5m), 9s period with SW 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 27) at 10PM. The primary swell is predicted to be 1.5m and 9s period with a secondary swell of 0.1m and 12s. 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 1.8m 7s and forecast to arrive on Saturday (Aug 29) at 7AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Monday (Aug 31) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 27th Aug) | 5ft (1.5m) 9s |
| Best Surf | 10PM (Thu 27th Aug) | 5ft (1.5m) 9s |
| Most Powerful | 7AM (Sat 29th Aug) | 6ft (1.8m) 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 look at what’s coming up for Tenby (South Beach) over the next couple of weeks.
Right off the bat, I gotta be straight with you – this is a tough run. The forecast is pretty much a long stretch of poor surf conditions, so don’t go getting your hopes up for any quick sessions. The water is sitting at a very warm 66°F for this time of year, and that’s 4°F above normal, which is a pretty notable difference for the area.
The first real chance of anything surfable doesn’t come until Thursday, August 27th in the morning. We’re looking at a 4ft swell from the southwest with a period of 8 seconds, and the combined energy is moderate at 164. The wind is cross-onshore though, so it’ll be a choppy mess. That afternoon, it builds a touch to 4ft from the SSW (226 energy), but the wind turns cross-shore and there’s a risk of thunderstorms. It’s not clean, but it’s the first pulse of size.
Then we get a bit of a build-up. Friday, August 28th stays messy with cross-shore winds and a dropping swell. The real standout comes on Saturday, August 29th. That morning, the swell jumps to 8ft from the WSW, with a solid 663 energy reading – that’s strong stuff. The wind is cross-offshore, so the faces will be clean. But listen, at 8ft, this is only for the experts. It’s a punchy, powerful wave and beginners should stay well clear. The afternoon drops a bit to 7ft (537 energy) but stays clean with cross-off winds. That’s your best window, but it’s a short one.
Sunday, August 30th settles down to 4ft (103 energy) with cross-off winds in the morning – rideable but nothing special. After that, the whole first week of September is a mix of small, weak swells and strong winds. Monday, August 31st sees a small 3ft swell from the SW with offshore winds from the NW, so it’ll be clean but tiny. Tuesday, September 1st has a 4ft swell from the west (181 energy) with clean cross-off winds, but again, it’s not a standout.
The rest of the run into the second week is mostly poor. The swell gets small and the wind stays strong or onshore. There’s a little spike in energy on Saturday, September 5th with a 3ft swell from the WSW (192 energy) and clean cross-off winds, but it’s small. Overall, the Saturday, August 29th is your best bet for a proper, powerful wave, but it’s a beast. The Sunday, August 30th morning is a safer, mellow option for the beginner crew.
Keep your eyes on the charts, but don’t hold your breath. This is a tough outlook for Tenby.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Mon afternoon, min 14°C on Mon night). Winds increasing (calm on Sun afternoon, fresh winds from the ESE by Mon morning). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Wed night. Warm (max 22°C on Wed afternoon, min 13°C on Fri night). Winds decreasing (fresh winds from the SE on Wed night, light winds from the WNW by Thu night). | |||||||||||||||||||
Sun 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
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 14 | SW 10 | E 4 | E 4 | E 4 | E 5 | E 4 | SW 8 | SW 8 | SW 7 | W 8 | SSW 7 | SW 8 | WSW 8 | SW 7 | SW 7 | WSW 7 | W 7 | WSW 7 | WSW 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 29 | 25 | 24 | 16 | 38 | 60 | 35 | 18 | 16 | 14 | 10 | 113 | 297 | 117 | 121 | 183 | 138 | 238 | 186 | 113 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross-on | on | cross-on | cross-on | on | on | cross-on | cross-on | on | cross-on | cross | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 4:31AM5.41m | 4:59PM5.77m | 5:26AM5.88m | 5:46PM6.31m | 6:07AM6.39m | 6:24PM6.85m | 6:42AM6.88m | 6:58PM7.34m | 7:15AM7.30m | 7:30PM7.73m | 7:47AM7.62m | 8:03PM7.99m | ||||||||
Low Tide | 10:23PM2.72m | 10:51AM2.55m | 11:22PM2.26m | 11:40AM2.05m | 00:05AM1.75m | 12:19PM1.54m | 00:41AM1.25m | 12:53PM1.08m | 1:14AM0.82m | 1:25PM0.70m | 1:45AM0.49m | 1:56PM0.43m | 2:16AM0.29m | |||||||
 |  |  | |  |  | | | | |  | | | | | | | | | | |
 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — |
 | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:13 | — |
mm | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | 1 | — | — | 1 |
Temp °C | 20 | 17 | 20 | 24 | 20 | 21 | 21 | 20 | 19 | 22 | 19 | 19 | 19 | 16 | 19 | 19 | 16 | 17 | 18 | 16 |
Feels °C | 18 | 13 | 15 | 20 | 15 | 17 | 20 | 18 | 18 | 21 | 18 | 17 | 17 | 15 | 14 | 14 | 13 | 12 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 10 | SW 9 | SW 14 | SW 13 | SW 8 | SSW 8 | SW 8 | SW 8 | SSW 4 | SW 4 | W 7 | W 8 | WSW 8 | W 8 | SW 7 | WSW 9 | — | — | — |
| kJ | 29 | 25 | 13 | 7 | 7 | 3 | 7 | 18 | 16 | 6 | 5 | 4 | 1 | 103 | 1 | 183 | 28 | — | — | — |
Swell 2 Height (m) Direction Period (s) | W 9 | SSW 14 | SW 14 | W 9 | W 9 | W 8 | W 10 | W 9 | W 8 | W 8 | W 8 | W 7 | W 12 | SSW 8 | SW 11 | SW 11 | — | — | — | — |
| kJ | 6 | 19 | 8 | 6 | 6 | 5 | 2 | 16 | 12 | 12 | 10 | 10 | 3 | 117 | 5 | 5 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | W 9 | SW 9 | SW 9 | SW 13 | W 8 | SW 13 | SW 12 | SW 7 | SSW 7 | — | — | — | SW 11 | — | — | — | — | — |
| kJ | — | — | 7 | 3 | 3 | 7 | 1 | 7 | 6 | 14 | 5 | — | — | — | 5 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNE 2 | ENE 2 | E 4 | E 4 | E 4 | E 5 | E 4 | ESE 3 | S 4 | — | SE 3 | SSW 7 | SW 8 | — | SW 7 | — | WSW 7 | W 7 | WSW 7 | WSW 6 |
| kJ | 1 | 1 | 24 | 16 | 38 | 60 | 35 | 2 | 7 | — | 6 | 113 | 297 | — | 121 | — | 138 | 238 | 186 | 113 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 122 | 25 | 346 | 338 | 240 | 128 | 336 | 29 | 29 | 88 | 271 | 28 | 30 | 0 | 148 | 148 | 40 | 271 | 329 | 103 |
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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