Surf Forecasts:
Harlyn surf forecast from 15 Aug 2026:
- Best quality surf: Friday 21 Aug, 4AM (local time) - 3.5ft (1.0m), 9s period, W swell with glassy winds.
- Most powerful swell: Thursday 20 Aug, 10AM (local time) - 5ft (1.6m), 8s period, WNW swell with 341 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 4AM (local time) - 3.5ft (1.0m), 9s period with W swell.
Best Forecast Surf Conditions for Harlyn this week:
The surf forecast for Harlyn over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 4AM. The primary swell is predicted to be 1.0m and 9s period with a secondary swell of 0.2m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Harlyn in the next 16 days are 1.6m 8s and forecast to arrive on Thursday (Aug 20) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 21st Aug) | 3.5ft (1.0m) 9s |
| Best Surf | 4AM (Fri 21st Aug) | 3.5ft (1.0m) 9s |
| Most Powerful | 10AM (Thu 20th Aug) | 5ft (1.6m) 8s |
Table - best surf conditions forecast for Harlyn over the next 16 days.
The Lowdown
G’day, Rusty here. Let's be straight with you – this outlook for Harlyn is a bit of a tough one. Looking across the full 16-day window, the surf just isn't cooperating. There are no standout days to get excited about, and the swell signal is weak and inconsistent.
The first shot at anything rideable won’t come until Saturday the 16th, and even then it’s grim. Sunday morning the 16th has a tiny 2 ft swell with gentle cross-onshore wind, making for fairly choppy conditions. It’s a flat spell for the most part through the start of the week.
The water temperature is sitting at 67°F with an anomaly of about 4°F – that’s much warmer than normal for this time of year, which is a nice touch, but it doesn’t do much for the surf quality.
We do see a slight pulse in the swell building through the middle of next week. Tuesday the 18th shows a 4 ft swell from the WNW, but the wind is cross-shore and the wave energy is moderate. The swell period is short at 6 seconds, producing very weak, chopped-up lines. It’s really not a paddler’s dream.
Even where the swell edges up – like Thursday morning the 20th with 5 ft of WNW swell – the cross-shore wind and lumpy conditions ruin any chance of clean waves. The combined energy hits 272, which is moderate, but the quality isn’t there. The break is sheltered and inconsistent by nature, which only adds to the struggle.
Winds stay messy throughout, mostly onshore or cross-shore, with moderate to fresh breezes. On Thursday the 27th there’s a brief window with a light cross-offshore breeze and clean conditions, but only a 2 ft swell is on offer. It’s not enough to recommend paddling out.
The saving grace is a glassy moment on Friday the 28th morning – wind is calm, the sea is flat with just 2 ft of swell, and the first record shows 2 ft from the WSW. But with such tiny swell, you’d be hard pressed to find a wave worth the effort. The consistency at Harlyn is poor, and we’ve got a real blank run here.
If you’re a kiter, there might be a bit more interest when the wind picks up and the swell hits 4 ft on Tuesday the 18th with cross-shore conditions – a bit more suited to your sport than a paddleboard.
Bottom line: there’s no good surf to chase in this 16-day window. The area is struggling with minimal swell and persistent onshore wind. It’s a quiet run, but forecasts can shift – and around here, that can happen quick.
Stay patient,
Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Sun night, min 16°C on Sat afternoon). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Very mild (max 18°C on Tue afternoon, min 17°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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 8 | W 8 | W 7 | W 7 | W 7 | WNW 9 | WNW 8 | W 7 | WNW 6 | WNW 6 | W 6 | WNW 6 | WNW 6 | WNW 7 | WNW 8 | WNW 9 | W 9 | W 8 | W 8 | W 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 74 | 54 | 17 | 25 | 8 | 28 | 101 | 79 | 139 | 112 | 143 | 149 | 115 | 285 | 341 | 283 | 160 | 140 | 88 | 35 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross-on | glassy | on | on |
High Tide | 8:03PM7.06m | 8:23AM6.66m | 8:41PM6.78m | 9:00AM6.37m | 9:19PM6.35m | 9:38AM5.98m | 9:57PM5.84m | 10:17AM5.52m | 10:38PM5.30m | 11:01AM5.06m | 11:28PM4.80m | 11:59AM4.65m | 00:39AM4.43m | |||||||
Low Tide | 2:24AM0.09m | 2:37PM0.26m | 3:00AM0.40m | 3:13PM0.60m | 3:35AM0.82m | 3:50PM1.03m | 4:11AM1.29m | 4:29PM1.50m | 4:51AM1.77m | 5:16PM1.96m | 5:43AM2.20m | 6:22PM2.34m | ||||||||
 |  |  | |  | | | | | | | | |  |  | | | | | | |
 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:16 | — | — |
 | 8:39 | — | — | 8:38 | — | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — | — | 8:29 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 1 | — | — | 1 |
Temp °C | 17 | 17 | 17 | 18 | 19 | 19 | 18 | 19 | 19 | 18 | 18 | 18 | 17 | 17 | 18 | 17 | 17 | 18 | 18 | 17 |
Feels °C | 12 | 12 | 15 | 16 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 15 | 12 | 12 | 15 | 15 | 15 | 18 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | W 8 | W 8 | W 7 | W 7 | W 7 | WNW 5 | WNW 8 | W 16 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | WSW 15 | WNW 8 | WNW 9 | W 9 | W 8 | W 8 | W 8 |
| kJ | 74 | 54 | 17 | 25 | 8 | 28 | 101 | 5 | 11 | 11 | 12 | 10 | 10 | 23 | 341 | 283 | 160 | 140 | 88 | 35 |
Swell 2 Height (m) Direction Period (s) | — | — | WSW 8 | W 18 | W 18 | WNW 9 | SW 18 | — | — | — | — | — | — | — | SW 14 | WSW 14 | N 4 | SW 13 | SW 13 | W 11 |
| kJ | — | — | 6 | 7 | 6 | 26 | 12 | — | — | — | — | — | — | — | 8 | 20 | 3 | 7 | 7 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 11 | W 6 | — | — | — | — | — | — | — | — | — | — | WSW 14 | SW 16 | SW 16 | SW 16 |
| kJ | — | — | — | — | 2 | 3 | — | — | — | — | — | — | — | — | — | — | 19 | 10 | 10 | 10 |
Wind waves Height (m) Direction Period (s) | N 5 | N 5 | N 4 | N 4 | WNW 4 | — | — | W 7 | WNW 6 | WNW 6 | W 6 | WNW 6 | WNW 6 | WNW 7 | — | — | — | N 4 | NNW 5 | N 4 |
| kJ | 47 | 34 | 9 | 3 | 5 | — | — | 79 | 139 | 112 | 143 | 149 | 115 | 285 | — | — | — | 1 | 58 | 20 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 246 | 244 | 246 | 353 | 237 | 281 | 227 | 305 | 281 | 284 | 133 | 69 | 227 | 287 | 123 | 222 | 1 | 1 | 56 | 42 |
Best forecast wave conditions in North Cornwall | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
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Information about the Harlyn Surf forecast
The above surf forecast table for Harlyn provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Harlyn can be found by selecting the local surf guide option on the grey menu. Our Harlyn 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 (Harlyn) 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 Harlyn 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.
Harlyn is 6 km (4 miles) from Padstow. If you plan a holiday in North Cornwall, look for hotels and other accommodation in Padstow. Padstow has rooms for a wide range of budgets as well as car hire and transport links.
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