Surf Forecasts:
Tenby (South Beach) surf forecast from 7 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 7PM (local time) - 3ft (0.9m), 9s period, WSW swell with 143 kJ wave energy.
Best Forecast Surf Conditions for Tenby (South Beach) this week:
The most powerful waves expected at Tenby (South Beach) in the next 16 days are 0.9m 9s and forecast to arrive on Wednesday (Aug 12) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Friday (Aug 07) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Wed 12th Aug) | 3ft (0.9m) 9s |
Table - best surf conditions forecast for Tenby (South Beach) over the next 16 days.
The Lowdown
Alright, Rusty here again. Let's break down the surf for Tenby (South Beach) in feet and miles per hour.
Honestly, the first ten days are a flat spell. We're looking at tiny, weak waves with poor conditions. The swell is small, and the wind is mostly onshore or side-shore, creating messy, unappealing surf. It's a long gap with nothing really worth a paddle.
Things finally start to turn around from the 17th of August. The swell builds a bit, and we see cleaner conditions. The best bet looks like the morning of the 17th of August. We've got clean waves around 5ft from the west, with a light offshore breeze. The water temperature is about average for the season. The combined energy is moderate (207), so there's a bit of power. It's not huge, but for a beginner-friendly spot like Tenby, this is a really good window.
The 19th and 20th of August are also looking good. The swell stays in the 5ft to 5ft range, with periods around 7 to 8 seconds. The wind is offshore from the north-west, which is a big plus, keeping the waves clean. The energy is moderate (296 and 285), so there's some decent grunt. This is the best run of the forecast. The swell is a bit much for total beginners by the 19th, but it's fine for most.
The 21st of August sees a bigger 7ft south-west swell, but the wind is strong and onshore, making for poor, lumpy waves. The 22nd looks cleaner with an offshore breeze, but the swell is dropping.
So, the first week and a half is a bust. The real surf to aim for is the clean, moderate swells from the 17th to the 20th of August. That's your window.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sun afternoon, min 13°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Tue afternoon, min 17°C on Sun night). Winds increasing (calm on Mon morning, fresh winds from the SE by Tue morning). | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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 5 | W 9 | W 9 | W 9 | WSW 8 | WSW 7 | SW 7 | SW 6 | SW 7 | SW 6 | SW 6 | SW 7 | ESE 4 | W 9 | W 11 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | WSW 9 | WSW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 7 | 6 | 6 | 6 | 6 | 18 | 11 | 6 | 7 | 6 | 10 | 7 | 7 | 7 | 63 | 102 | 126 | 140 | 127 | 140 | 124 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | glassy | on | cross | glassy | cross-off | cross-off | cross-off | glassy | cross-off | cross | on | on | cross-on | on | cross-off | off | cross-off | cross-off | off |
High Tide | 1:13PM6.15m | 1:52AM6.08m | 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 | ||||||||
Low Tide | 6:51AM1.93m | 7:27PM2.08m | 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 | |||||||
 | |  |  | |  |  | | | | | | | | | | | | | | | |
 | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — |
 | — | 8:58 | — | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 15 | 17 | 20 | 17 | 21 | 22 | 18 | 22 | 24 | 20 | 22 | 27 | 23 | 24 | 27 | 20 | 23 | 23 | 19 |
Feels °C | 15 | 15 | 14 | 14 | 18 | 15 | 19 | 20 | 18 | 22 | 23 | 17 | 18 | 25 | 22 | 21 | 24 | 18 | 22 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | W 5 | W 9 | W 4 | W 4 | WSW 8 | WSW 7 | SW 7 | SW 6 | SW 7 | SW 6 | SW 6 | SW 7 | SW 6 | ESE 4 | W 11 | WSW 10 | WSW 9 | WSW 9 | WSW 8 | WSW 9 | WSW 9 |
| kJ | 7 | 6 | 1 | 1 | 6 | 18 | 11 | 6 | 7 | 6 | 10 | 7 | 6 | 5 | 63 | 102 | 126 | 140 | 127 | 140 | 124 |
Swell 2 Height (m) Direction Period (s) | W 9 | SW 12 | W 9 | W 9 | — | S 11 | SW 12 | SW 12 | W 8 | W 4 | W 8 | NNW 3 | W 8 | SW 6 | WSW 6 | SSE 6 | — | — | W 12 | W 11 | — |
| kJ | 7 | 6 | 6 | 6 | — | 2 | 6 | 6 | 1 | 1 | 1 | 1 | 5 | 1 | 4 | 3 | — | — | 3 | 10 | — |
Swell 3 Height (m) Direction Period (s) | SW 6 | SW 6 | SW 12 | SW 8 | — | — | W 8 | W 8 | S 12 | W 8 | S 13 | W 8 | W 10 | W 9 | ESE 3 | — | — | — | — | — | — |
| kJ | 1 | 1 | 5 | 3 | — | — | 1 | 1 | 3 | 1 | 3 | 1 | 2 | 7 | 1 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | WSW 4 | — | — | — | — | — | — | WNW 2 | — | WNW 5 | NNE 2 | ESE 4 | — | — | SSE 3 | WSW 2 | WSW 3 | — | WSW 3 | — |
| kJ | — | 6 | — | — | — | — | — | — | 1 | — | 4 | 1 | 7 | — | — | 1 | 1 | 3 | — | 2 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 373 | 364 | 347 | 348 | 189 | 181 | 181 | 194 | 181 | 180 | 181 | 181 | 365 | 329 | 8 | 28 | 172 | 30 | 30 | 127 | 30 |
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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