Surf Forecasts:
Tenby (South Beach) surf forecast from 15 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 10PM (local time) - 4.5ft (1.4m), 7s period, WSW swell with offshore winds.
- Most powerful swell: Wednesday 16 Sep, 7AM (local time) - 5.5ft (1.7m), 10s period, W swell with 544 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 10PM (local time) - 4.5ft (1.4m), 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 (Sep 15) at 10PM. The primary swell is predicted to be 1.4m and 7s period. 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 1.7m 10s and forecast to arrive on Wednesday (Sep 16) 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 1.6m 6s period and expected on Friday (Sep 18) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 15th Sep) | 4.5ft (1.4m) 7s |
| Best Surf | 10PM (Tue 15th Sep) | 4.5ft (1.4m) 7s |
| Most Powerful | 7AM (Wed 16th Sep) | 5.5ft (1.7m) 10s |
Table - best surf conditions forecast for Tenby (South Beach) over the next 16 days.
The Lowdown
Alright folks, Rusty here. I’ve had a good look at the charts for Tenby (South Beach), and I’ve got to be straight with you – it’s a tough run ahead.
We’re looking at a long, drawn-out period of poor surf conditions stretching all the way from now, right through to the end of the month. For the first couple of weeks, there just isn't a single standout day where it all comes together. The energy is there at times – like on the morning of Tuesday the 15th, with a combined energy of 302 (moderate) and a clean offshore wind, but the swell period is a short 7 seconds, leaving the waves weak and crumbly. The water temp is running at 65°, which is much warmer than normal for this time of year, so you won’t need a thick wetsuit, but you will need patience.
For the first week, expect a lot of cross-shore breezes and onshore wind, with the odd bit of clean surf but nothing that’s going to get the heart racing. The best you could hope for would be a sneaky paddle on Wednesday morning the 16th, with a clean 4ft from the west on a 10-second period, but it’s still not firing. By the weekend, it’s all messy, short-period stuff in the 6 to 7-second range.
The second week kicks off with some glassy mornings, particularly Monday the 21st afternoon and Wednesday the 23rd afternoon, but with wave heights around 2ft to 2ft, it’s barely a ripple. The long period groundswell that shows up on Tuesday the 22nd morning is a 12-second pulse from the west, but the energy is weak (138) and the wind is cross-onshore, messing it up. This break is sheltered, so it needs a specific window, and we just aren’t getting it.
The only thing that looks different is the final few days. Monday the 28th and Tuesday the 29th see a bump in size from the east, but it’s accompanied by a fresh onshore breeze that’ll turn the lineup into a lumpy, choppy mess. That 6ft on the Tuesday morning is actually too big for a beginner and, with that cross-onshore wind, it's not going to be any fun for anyone. At this stage, that setup looks more interesting for kite surfing than a proper paddle session.
Simply put, there’s no good surf on offer in the 16-day window. It’s a blank run. But for Tenby, this kind of lull isn't unusual – forecasts can change, so don’t write it off completely.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Mon night. Very mild (max 18°C on Mon night, min 13°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Fri afternoon. Very mild (max 18°C on Sat afternoon, min 13°C on Thu night). Winds decreasing (fresh winds from the WSW on Fri night, calm by Sat night). | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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 7 | W 7 | W 8 | WSW 10 | W 10 | W 6 | W 7 | W 7 | W 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 278 | 240 | 295 | 394 | 347 | 0 | 435 | 348 | 285 | 191 | 188 | 362 | 303 | 273 | 237 | 168 | 172 | 93 | 62 | 41 | 72 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | glassy |
High Tide | 9:23AM7.60m | 9:40PM7.40m | 9:56AM7.13m | 10:15PM6.83m | 10:31AM6.58m | 10:52PM6.21m | 11:11AM6.00m | 11:37PM5.61m | 12:05PM5.46m | 00:45AM5.12m | 1:31PM5.11m | 2:29AM4.97m | 3:17PM5.23m | 4:00AM5.29m | |||||||
Low Tide | 3:30PM0.68m | 3:46AM0.98m | 4:02PM1.17m | 4:18AM1.52m | 4:37PM1.74m | 4:54AM2.09m | 5:20PM2.32m | 5:42AM2.65m | 6:23PM2.84m | 7:03AM3.06m | 8:11PM3.08m | 9:00AM3.06m | 9:53PM2.80m | ||||||||
 | |  |  | |  | |  | | |  |  | | | | | |  | | | | |
 | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — |
 | — | 7:34 | — | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:20 | — |
mm | — | — | — | — | — | 3 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 16 | 15 | 15 | 16 | 15 | 15 | 14 | 16 | 15 | 16 | 17 | 18 | 17 | 18 | 18 | 18 | 18 | 19 | 18 |
Feels °C | 10 | 11 | 13 | 10 | 10 | 12 | 9 | 9 | 9 | 11 | 10 | 11 | 14 | 15 | 16 | 16 | 17 | 19 | 18 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | W 11 | — | W 8 | WSW 10 | — | — | — | — | W 7 | S 12 | S 12 | SW 16 | SW 16 | SW 16 | W 10 | SW 14 | SW 14 | WSW 7 | WSW 7 | WSW 7 | WSW 10 |
| kJ | 2 | — | 295 | 394 | — | — | — | — | 285 | 3 | 3 | 10 | 10 | 10 | 8 | 8 | 8 | 93 | 62 | 41 | 72 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | S 12 | W 14 | W 13 | — | — | W 14 | SW 13 | SW 13 | SW 13 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 4 | 3 | — | — | 4 | 7 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | S 12 | SW 14 | — | — | SW 14 | W 14 | W 14 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 8 | — | — | 7 | 4 | 4 | — |
Wind waves Height (m) Direction Period (s) | W 7 | W 7 | NW 3 | NW 5 | W 10 | W 6 | W 7 | W 7 | — | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | WSW 7 | — | — | — | — |
| kJ | 278 | 240 | 6 | 23 | 347 | 149 | 435 | 348 | — | 191 | 188 | 362 | 303 | 273 | 237 | 168 | 172 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 127 | 127 | 369 | 369 | 0 | 40 | 339 | 339 | 428 | 369 | 0 | 30 | 314 | 127 | 127 | 127 | 57 | 127 | 127 | 8 | 25 |
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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