Surf Forecasts:
Tenby (South Beach) surf forecast from 14 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 4AM (local time) - 5ft (1.6m), 7s period, WSW swell with offshore winds.
- Most powerful swell: Tuesday 18 Aug, 4AM (local time) - 5ft (1.6m), 7s period, WSW swell with 232 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 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 Tuesday (Aug 18) at 4AM. The primary swell is predicted to be 1.6m and 7s period with a secondary swell of 0.1m and 16s. 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 1.6m 7s and forecast to arrive on Tuesday (Aug 18) at 4AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Monday (Aug 17) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 18th Aug) | 5ft (1.6m) 7s |
| Best Surf | 4AM (Tue 18th Aug) | 5ft (1.6m) 7s |
| Most Powerful | 4AM (Tue 18th Aug) | 5ft (1.6m) 7s |
Table - best surf conditions forecast for Tenby (South Beach) over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let’s break down the next couple of weeks.
It’s a bit of a slow start. We’ve got a week and a half of small, weak surf, nothing that’s going to have you rushing for your board. The water is sitting at 67°, which is much warmer than usual for the time of year – that’s a bit of a treat if you're just getting wet.
The first real swell of note is on Tuesday the 19th. We’ll see waves around 5ft, but they’ll have a short period of 6 seconds. It’s from the W with a light offshore NW wind, so it should be clean. The energy is moderate at (186), so there’s a little push, but the short period will keep it from having any real shape. A decent option for beginners, but nothing to write home about.
Then it goes flat again for a while. Around the 22nd and 23rd, it's tiny and mostly onshore or cross-shore. Not worth the drive.
But hold on. The long-range charts are showing something serious at the end of the month. For the morning of the 28th, we’re looking at a big 16ft swell from the WSW with a long 12-second period. The energy is massive at (7054) – that’s very strong. But, there's a problem: a fresh cross-shore NE wind is going to make it a lumpy, choppy mess. This is strictly for experts, way too big for anyone else. It might be a better day for the kite surfers.
The standout day is the 29th. The swell drops to a still-solid 13ft from the WSW, with a long 10-second period. The wind swings to a better cross-off from the NNE, which should clean it up nicely. This is the one to circle on the calendar. Tenby (South Beach) will hold up, and the direction suits it.
So, the next few days are quiet. Tuesday the 19th is a small, clean option, but the real score is Saturday the 29th. It’s a long way off and could change, but if it comes together, it’ll be worth the wait.
Rusty, out.
Short Range ForecastMostly dry. Warm (max 23°C on Fri morning, min 14°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Tue night. Warm (max 20°C on Mon morning, min 14°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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 9 | WSW 9 | WSW 8 | WSW 7 | WSW 7 | W 8 | WSW 7 | WSW 7 | WSW 7 | SW 18 | W 8 | WSW 6 | WSW 6 | WSW 6 | W 6 | W 6 | W 6 | WSW 6 | SW 15 | W 8 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 108 | 79 | 51 | 26 | 43 | 29 | 18 | 10 | 17 | 12 | 12 | 182 | 127 | 123 | 115 | 176 | 153 | 64 | 8 | 49 | 24 |
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-off | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | off | off | cross-off | off | cross-off | cross-off |
High Tide | 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 | 11:14AM6.51m | 11:35PM6.26m | 11:58AM5.96m | 00:25AM5.67m | ||||||||
Low Tide | 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 | 5:03AM1.52m | 5:21PM1.77m | 5:43AM2.09m | 6:07PM2.32m | ||||||||
 | |  |  | |  | | | | | | | | |  | | | | | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | 8:44 | — | — | 8:42 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — | — | 8:34 | — | — | 8:31 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 23 | 23 | 17 | 18 | 18 | 15 | 18 | 19 | 17 | 20 | 20 | 18 | 18 | 19 | 18 | 16 | 18 | 17 | 17 | 17 | 14 |
Feels °C | 22 | 21 | 15 | 14 | 13 | 11 | 15 | 15 | 16 | 17 | 17 | 16 | 14 | 14 | 15 | 11 | 13 | 15 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | WSW 9 | WSW 9 | WSW 8 | WSW 7 | WSW 7 | W 8 | WSW 7 | WSW 7 | WSW 7 | W 7 | W 8 | SW 16 | WSW 6 | SW 17 | SW 17 | SW 16 | SW 16 | WSW 6 | W 7 | W 8 | WSW 8 |
| kJ | 108 | 79 | 51 | 26 | 43 | 29 | 18 | 10 | 17 | 4 | 10 | 11 | 127 | 11 | 12 | 10 | 10 | 64 | 72 | 49 | 24 |
Swell 2 Height (m) Direction Period (s) | — | — | S 13 | W 8 | — | — | — | — | S 18 | SW 18 | SW 18 | — | SW 17 | — | — | — | — | SSW 16 | SW 15 | SSW 14 | SSW 14 |
| kJ | — | — | 3 | 5 | — | — | — | — | 6 | 12 | 12 | — | 11 | — | — | — | — | 24 | 8 | 21 | 20 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 10 | — | — | S 12 | — | W 18 | SW 18 | — | — | — | — | — | — | — | SW 16 | — | — | — |
| kJ | — | — | — | 2 | — | — | 3 | — | 6 | 12 | — | — | — | — | — | — | — | 10 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | N 3 | N 3 | NNW 3 | N 3 | — | W 5 | W 4 | W 5 | WSW 5 | WSW 6 | — | WSW 6 | W 6 | W 6 | W 6 | — | — | NNW 3 | N 3 |
| kJ | — | — | 4 | 5 | 4 | 5 | — | 4 | 4 | 18 | 35 | 182 | — | 123 | 115 | 176 | 153 | — | — | 3 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 127 | 181 | 407 | 426 | 68 | 336 | 375 | 183 | 377 | 447 | 339 | 17 | 369 | 271 | 181 | 30 | 30 | 31 | 181 | 25 |
Best forecast wave conditions in Wales - Pembrokeshire | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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