Surf Forecasts:
Tenby (South Beach) surf forecast from 22 Aug 2026:
- Best quality surf: Friday 28 Aug, 4AM (local time) - 7.5ft (2.3m), 7s period, SW swell with glassy winds.
- Most powerful swell: Friday 28 Aug, 10PM (local time) - 10ft (3.0m), 8s period, WSW swell with 1,058 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 4AM (local time) - 7.5ft (2.3m), 7s period with SW 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 Friday (Aug 28) at 4AM. The primary swell is predicted to be 2.3m and 7s period with a secondary swell of 0.1m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Tenby (South Beach) in the next 16 days are 3.0m 8s and forecast to arrive on Friday (Aug 28) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Aug 22) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 28th Aug) | 7.5ft (2.3m) 7s |
| Best Surf | 4AM (Fri 28th Aug) | 7.5ft (2.3m) 7s |
| Most Powerful | 10PM (Fri 28th Aug) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Tenby (South Beach) over the next 16 days.
The Lowdown
Alright, let’s break it down. This is Rusty.
Look, I’ll be straight with you—Tenby’s not firing. At all. We’ve got a long stretch of flat and poor conditions, so if you’re looking for waves, you’re gonna have to wait. There’s a big gap of nothing for days on end. Not a good start.
The only break in the data is Tenby (South Beach). Water temp is running 66°F, which is much warmer than normal for this time of year—close to 5°F above average. That’s a big deal.
Starting Saturday 22 August: tiny. 1ft from the WSW, 10-second period, cross-off wind from the north-northeast. Combined swell energy is weak (52). It’s clean but poor. Sunday’s even smaller—1ft with a glassy afternoon, but still poor.
Monday 24 August gives us 3ft from the east, but with a terrible 4-second period and onshore wind. Just messy. Tuesday 25 August shows 4ft from the east, 5-second period, onshore. Choppy and lumpy.
Wednesday 26 and Thursday 27 are still poor. Thursday afternoon hits 5ft from the SW, 7-second period, onshore wind, combined energy 275 (moderate). Still messy.
Friday 28 August morning is a big one: 8ft from the WSW, 7-second period, light cross-shore wind. Combined energy jumps to 527 (strong). But it’s flagged as marginal with questionable tides. Afternoon hits 8ft, cross-off wind, energy 785. That’s serious power, but it’s still poor quality. At that size, on a beach with that wind, it might be better for the kite crew than us paddlers.
Saturday 29 August still has size—6ft in the morning, 5ft in the afternoon—clean with cross-off wind from the west. Energy is strong in the morning (394), moderate in the afternoon (220). But still poor surf conditions.
Sunday 30 August morning gives us 3ft from the SW, offshore wind from the NW. Gentle offshore and clean. Energy is weak (54). Monday 31 August is the best of the lot: 4ft from the west, 8-second period, light offshore wind, clean. Combined energy 201 (moderate). Afternoon stays at 4ft with a 9-second period, offshore from the west-northwest. Surfable but very ordinary.
After that, it drops off. Tuesday 1 September: 2ft. Wednesday 2 September: 1ft, then a tiny 0.3ft with a 17-second period from the SW—groundswell but barely anything. Thursday 3 September shows 5ft from the WSW, 6-second period, cross-shore, energy 247. Still poor. Afternoon is 4ft, cleaner.
Friday 4 September is small. Saturday 5 September is flat at 0.3ft. Sunday 6 September is 2ft. End of story.
So what’s the pick? Monday 31 August—offshore wind, clean, 4ft, 8-9 second period. That’s your window. Friday 28 August morning has size for the brave (8ft) but comes with warnings. Nothing here is a classic.
Stay patient.
Rusty.
Short Range ForecastMostly dry. Warm (max 23°C on Mon afternoon, min 13°C on Sat night). Winds increasing (calm on Sun afternoon, fresh winds from the ESE by Mon morning). | Days 4-6 Weather SummaryHeavy rain (total 30mm), heaviest during Wed night. Warm (max 23°C on Tue afternoon, min 15°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||||
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 | SSW 15 | SW 14 | SW 13 | SW 10 | E 4 | E 4 | E 5 | E 5 | E 4 | SW 8 | SW 8 | SW 7 | SSW 7 | SW 8 | SW 7 | SW 7 | WSW 7 | WSW 8 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 31 | 30 | 21 | 32 | 28 | 25 | 28 | 22 | 51 | 81 | 36 | 17 | 15 | 14 | 19 | 206 | 268 | 221 | 527 | 785 | 899 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-on | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross | cross-off | off |
High Tide | 2:19PM5.20m | 3:09AM5.13m | 3:52PM5.33m | 4:31AM5.41m | 4:59PM5.77m | 5:26AM5.88m | 5:46PM6.31m | 6:07AM6.39m | 6:24PM6.85m | 6:42AM6.88m | 6:58PM7.34m | 7:15AM7.30m | 7:30PM7.73m | ||||||||
Low Tide | 8:51PM2.96m | 9:36AM2.93m | 10:23PM2.72m | 10:51AM2.55m | 11:22PM2.26m | 11:40AM2.05m | 00:05AM1.75m | 12:19PM1.54m | 00:41AM1.25m | 12:53PM1.08m | 1:14AM0.82m | 1:25PM0.70m | 1:45AM0.49m | ||||||||
 | |  | | |  |  |  | | | | | | |  |  | | |  | | | |
 | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — |
 | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 26 | 3 | — | 1 | 1 | — | — |
Temp °C | 18 | 18 | 14 | 18 | 21 | 18 | 20 | 23 | 20 | 21 | 23 | 19 | 19 | 22 | 19 | 19 | 19 | 17 | 18 | 19 | 17 |
Feels °C | 16 | 14 | 11 | 16 | 19 | 14 | 15 | 19 | 14 | 16 | 20 | 18 | 18 | 22 | 19 | 15 | 16 | 17 | 16 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 10 | WSW 10 | WSW 9 | W 9 | SW 13 | SW 10 | SW 9 | SSW 13 | SW 13 | SSW 8 | SW 8 | SW 8 | SW 8 | SW 7 | SSW 7 | W 7 | W 8 | SW 12 | — | — | — |
| kJ | 31 | 30 | 16 | 6 | 28 | 25 | 13 | 18 | 7 | 7 | 11 | 17 | 15 | 14 | 19 | 4 | 1 | 5 | — | — | — |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SW 15 | SSW 15 | SSW 14 | W 9 | SSW 14 | SSW 14 | SW 9 | W 9 | W 8 | W 8 | W 9 | W 8 | W 8 | W 8 | S 12 | S 12 | — | — | — | — |
| kJ | 21 | 8 | 21 | 20 | 6 | 19 | 19 | 3 | 6 | 5 | 5 | 15 | 12 | 12 | 10 | 3 | 3 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | NW 5 | SW 12 | SW 12 | SW 14 | — | — | W 9 | W 9 | SW 9 | SW 13 | SW 13 | SW 13 | SW 12 | SW 4 | SW 12 | — | W 13 | — | — | — | — |
| kJ | 1 | 6 | 6 | 32 | — | — | 7 | 6 | 3 | 7 | 7 | 7 | 6 | 3 | 6 | — | 3 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNE 3 | — | N 3 | NE 2 | — | — | E 4 | E 4 | E 5 | E 5 | E 4 | SSE 3 | SSW 4 | — | — | SW 8 | SW 7 | SW 7 | WSW 7 | WSW 8 | W 8 |
| kJ | 1 | — | 2 | 1 | — | — | 28 | 22 | 51 | 81 | 36 | 4 | 8 | — | — | 206 | 268 | 221 | 527 | 785 | 899 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 28 | 185 | 28 | 128 | 122 | 25 | 346 | 329 | 259 | 347 | 142 | 88 | 129 | 88 | 88 | 122 | 284 | 28 | 111 | 5 | 271 |
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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