Surf Forecasts:
Tenby (South Beach) surf forecast from 17 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 4PM (local time) - 0.5ft (0.1m), 19s period, SW swell with 15 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 0.1m 19s and forecast to arrive on Sunday (Jul 19) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Wednesday (Jul 22) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sun 19th Jul) | 0.5ft (0.1m) 19s |
Table - best surf conditions forecast for Tenby (South Beach) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you: the next couple of weeks are looking pretty grim for a paddle. We’ve got a long stretch of flat, weak conditions, so don’t be in a rush to get the board waxed just yet.
There’s no real surf to speak of from now all the way through to the morning of Friday, July 25th. That’s a solid week of nothing worthwhile. The swell energy is tiny, barely registering in the single digits and low teens (combined energy 5 to 19), and the swell heights are a pathetic 0.3 ft to 1.0 ft. Even when the wind goes glassy or offshore, there’s just nothing to push around. It’s a complete write-off for a surf.
The first flicker of hope finally shows up on Saturday morning, July 26th. We get a bump in the swell, with 4 ft from the west, but it’s a short period of just 6 seconds. The wave energy is moderate (140), but the data still calls it poor surf. The offshore wind from the NNW will clean it up, but that short period at a sheltered spot like Tenby (South Beach) means it’s going to be small, weak, and very fat. It’s really not a standout.
The best of a very bad bunch looks like Sunday morning, July 27th. The swell drops a touch to 4 ft from the west, still with that short 6-second period, but the energy is moderate (101). The big thing here is the glassy conditions with a light NW breeze. That will make the surface clean as a whistle. But don’t get excited about power; it’s still a beginner-friendly wave at best. The water temperature is about average for this time of year, so no shocks there.
For the rest of the run into the first week of August, it just fades back into tiny, wind-affected slop. If you’re a kite surfer, the breezier afternoons with a bit of chop might be more interesting than anything for a paddle board.
This is definitely a “wait and see” window. Forecasts can change, but the models are showing a total flat spell for a classic summer spot. Keep the gear in the shed for now.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Fri morning, min 14°C on Sat night). Winds increasing (calm on Fri morning, fresh winds from the N by Sat afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Tue morning, min 13°C on Tue night). Winds increasing (calm on Tue morning, strong winds from the N by Wed afternoon). | ||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||
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) | SW 6 | W 8 | W 8 | W 8 | W 8 | SW 11 | S 10 | SW 19 | SW 19 | S 18 | W 8 | SW 18 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 6 | 7 | 7 | 5 | 5 | 2 | 15 | 15 | 6 | 1 | 12 | 8 | 10 | 10 | 10 | 9 | 8 | 8 | 8 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off |
High Tide | 9:06AM7.84m | 9:26PM8.17m | 9:50AM7.63m | 10:10PM7.86m | 10:33AM7.28m | 10:54PM7.40m | 11:17AM6.85m | 11:38PM6.86m | 12:03PM6.38m | 00:27AM6.31m | 12:54PM5.95m | 1:22AM5.83m | 1:56PM5.63m | 2:30AM5.53m | |||||||
Low Tide | 3:17PM0.30m | 3:46AM0.29m | 4:00PM0.54m | 4:29AM0.63m | 4:43PM0.91m | 5:11AM1.07m | 5:27PM1.37m | 5:55AM1.57m | 6:13PM1.84m | 6:43AM2.04m | 7:08PM2.28m | 7:41AM2.43m | 8:14PM2.57m | ||||||||
 | |  | |  | | | | | | | | | |  | | | | | | | |
 | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:26 | — | — | 5:26 | — | — |
 | — | — | 9:28 | — | — | 9:27 | — | — | 9:25 | — | — | 9:24 | — | — | 9:23 | — | — | 9:22 | — | — | 9:21 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 19 | 19 | 19 | 17 | 20 | 21 | 18 | 20 | 19 | 18 | 21 | 21 | 17 | 19 | 19 | 16 | 19 | 20 | 18 |
Feels °C | 22 | 20 | 16 | 14 | 12 | 14 | 18 | 17 | 15 | 18 | 14 | 15 | 19 | 17 | 14 | 13 | 11 | 10 | 15 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SSW 6 | W 8 | W 8 | W 8 | NW 4 | W 7 | — | W 9 | W 9 | W 8 | W 8 | — | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | W 4 |
| kJ | 6 | 4 | 5 | 5 | 5 | 4 | 1 | — | 2 | 2 | 1 | 1 | — | 8 | 8 | 7 | 7 | 6 | 6 | 6 | 3 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 8 | SW 6 | SW 5 | SW 5 | W 8 | NW 4 | W 7 | SW 19 | — | NW 5 | W 11 | W 10 | W 7 | SW 16 | SW 16 | SW 16 | SW 14 | SW 14 | SW 14 | W 8 |
| kJ | 5 | 5 | 1 | 1 | 1 | 1 | 1 | 1 | 15 | — | 1 | 2 | 8 | 1 | 10 | 10 | 9 | 8 | 8 | 8 | 5 |
Swell 3 Height (m) Direction Period (s) | — | SW 13 | SW 13 | SW 13 | SW 11 | SW 11 | S 10 | SW 19 | W 7 | S 18 | — | SW 18 | NW 5 | SW 16 | W 7 | — | — | — | — | — | SW 14 |
| kJ | — | 6 | 7 | 7 | 5 | 5 | 2 | 15 | 1 | 6 | — | 12 | 1 | 10 | 1 | — | — | — | — | — | 8 |
Wind waves Height (m) Direction Period (s) | — | NW 3 | NNW 3 | NNW 3 | NNW 4 | NE 3 | E 3 | NW 2 | N 3 | NE 3 | N 3 | N 4 | — | NW 4 | N 3 | N 4 | NNW 4 | N 4 | NNW 3 | WNW 3 | WNW 4 |
| kJ | — | 2 | 4 | 3 | 14 | 2 | 2 | 1 | 6 | 1 | 2 | 6 | — | 2 | 5 | 9 | 19 | 6 | 3 | 8 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 271 | 768 | 346 | 431 | 431 | 98 | 189 | 441 | 353 | 190 | 346 | 353 | 128 | 834 | 194 | 904 | 898 | 194 | 405 | 428 | 408 |
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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