Surf Forecasts:
Tenby (South Beach) surf forecast from 12 Aug 2026:
- Best quality surf: Thursday 13 Aug, 10AM (local time) - 3.5ft (1.0m), 10s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 10AM (local time) - 3.5ft (1.0m), 10s period, WSW swell with 222 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 10AM (local time) - 3.5ft (1.0m), 10s 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 Thursday (Aug 13) at 10AM. The primary swell is predicted to be 1.0m and 10s 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 1.0m 10s and forecast to arrive on Thursday (Aug 13) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Tuesday (Aug 18) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Thu 13th Aug) | 3.5ft (1.0m) 10s |
| Best Surf | 10AM (Thu 13th Aug) | 3.5ft (1.0m) 10s |
| Most Powerful | 10AM (Thu 13th Aug) | 3.5ft (1.0m) 10s |
Table - best surf conditions forecast for Tenby (South Beach) over the next 16 days.
The Lowdown
Alright, Rusty here. Let's size it up.
Right off the bat, the 16-day window at Tenby (South Beach) is a grim one. It’s a sheltered, beginner-friendly spot, fairly consistent usually, but this forecast just doesn't line up. The water is running at 66°, which is much warmer than normal, but you'll need more than warm water to make a wave worth paddling for.
The first and only real flicker of hope is on the morning of Thursday the 13th. We get a little 3ft pulse from the west-southwest, with a 10-second period, and a light west-northwest cross-offshore breeze. The combined swell energy is moderate at (222). It's surfable, but it's very ordinary, small and clean.
After that, it's a long, drawn-out drought. From the 14th through the 17th, the swell is tiny, never hitting 2ft, and the energy readings are in the dumps. The 17th is glassy but with absolutely no push (0.3ft).
Tuesday the 18th shows a jump to about 5ft from the west-southwest, but the period is a short and lumpy 6 seconds, with a fresh cross-offshore wind. That's a messy, bumpy mess. The afternoon gets a fresh offshore, dropping to 5ft, but still poor quality.
From then on, it's more tiny, weak swell and onshore winds or strong offshore winds that kill any shape. The 22nd has a tiny 0.7ft from the south-southwest with a very long 15-second period, but no energy.
The best bet, and really the only one worth mentioning, is Thursday morning the 13th. It's only 3ft from the west-southwest, but the light cross-offshore wind will make it clean. It's strictly a beginner longboard wave. After that, you're waiting for a miracle, and the 1.5m set on the 27th with a 6-second period just isn't it.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Wed afternoon, min 15°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Mon night. Very mild (max 18°C on Sun morning, min 14°C on Sat night). Winds increasing (calm on Mon morning, fresh winds from the WSW by Mon night). | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||||
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 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | W 9 | WSW 8 | WSW 8 | WSW 8 | W 8 | WSW 7 | WSW 7 | S 18 | SW 18 | SW 18 | SW 16 | WSW 6 | WSW 7 | W 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 104 | 123 | 149 | 222 | 173 | 123 | 108 | 96 | 67 | 44 | 44 | 29 | 11 | 18 | 6 | 12 | 12 | 11 | 205 | 186 | 113 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | glassy | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross | cross-off | off | off |
High Tide | 6:56PM7.93m | 7:21AM7.81m | 7:41PM8.30m | 8:03AM8.03m | 8:22PM8.43m | 8:43AM8.04m | 9:01PM8.31m | 9:21AM7.86m | 9:39PM7.98m | 9:58AM7.52m | 10:17PM7.48m | 10:35AM7.05m | 10:55PM6.89m | ||||||||
Low Tide | 12:50PM0.61m | 1:18AM0.26m | 1:34PM0.24m | 2:00AM-0.00m | 2:15PM0.07m | 2:40AM-0.04m | 2:53PM0.10m | 3:17AM0.13m | 3:30PM0.33m | 3:53AM0.49m | 4:06PM0.72m | 4:27AM0.97m | 4:42PM1.21m | ||||||||
 | |  |  | |  | |  | | | | | | | | | |  | | |  | |
 | 5:58 | — | — | 5:58 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — |
 | — | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — |
Temp °C | 25 | 29 | 24 | 26 | 26 | 19 | 22 | 20 | 17 | 16 | 16 | 15 | 18 | 18 | 15 | 16 | 17 | 18 | 19 | 20 | 19 |
Feels °C | 21 | 26 | 24 | 23 | 23 | 19 | 20 | 17 | 15 | 11 | 10 | 11 | 13 | 13 | 12 | 16 | 14 | 15 | 15 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | WSW 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | W 9 | WSW 8 | WSW 8 | WSW 8 | W 8 | WSW 7 | WSW 7 | WSW 7 | W 5 | W 7 | SW 16 | SW 17 | SW 17 | W 7 |
| kJ | 104 | 123 | 149 | 222 | 173 | 123 | 108 | 96 | 67 | 44 | 44 | 29 | 11 | 18 | 5 | 4 | 4 | 11 | 11 | 11 | 113 |
Swell 2 Height (m) Direction Period (s) | SW 6 | ESE 3 | — | — | — | — | — | — | S 13 | W 10 | — | — | S 12 | — | — | W 7 | ESE 3 | — | — | SW 17 | SW 17 |
| kJ | 1 | 4 | — | — | — | — | — | — | 3 | 2 | — | — | 3 | — | — | 4 | 1 | — | — | 11 | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 18 | SW 18 | SW 18 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 12 | 12 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 3 | — | — | — | WNW 2 | WSW 3 | — | — | NNW 3 | N 4 | NNW 4 | N 4 | N 4 | NNW 4 | N 3 | ESE 3 | WSW 4 | WSW 4 | WSW 6 | WSW 7 | NW 4 |
| kJ | 3 | — | — | — | 1 | 3 | — | — | 8 | 12 | 19 | 21 | 9 | 11 | 6 | 3 | 4 | 14 | 205 | 186 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 64 | 28 | 8 | 0 | 369 | 30 | 30 | 369 | 49 | 407 | 426 | 346 | 398 | 398 | 316 | 377 | 377 | 384 | 842 | 916 | 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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