Surf Forecasts:
Cornish Reef surf forecast from 16 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 1PM (local time) - 8ft (2.5m), 10s period, W swell with 1,250 kJ wave energy.
Best Forecast Surf Conditions for Cornish Reef this week:
The most powerful waves expected at Cornish Reef in the next 16 days are 2.5m 10s and forecast to arrive on Wednesday (Aug 19) at 1PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Saturday (Aug 22) at 1AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Wed 19th Aug) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Cornish Reef over the next 16 days.
The Lowdown
Alright, let’s get into it. The next couple of weeks look pretty ordinary for Cornish Reef. We’ve got a run of small, jumbled swell with onshore winds that’s going to make things messy for a while. You’ll want to save your energy for the back half of the window.
The opening stretch is a write-off. From Saturday the 15th through to the 24th, forget it. The swell is tiny and the winds are mostly onshore or cross-onshore, chopping everything up. There’s a bit of a bump mid-week around Tuesday the 19th with some 8ft swell, but the wind is howling from the west at 19 mph, so it will be lumpy and poor. The energy is building (838 for that Tuesday afternoon), but it’s all for nothing with that wind. This is a beach and reef setup, so with that much swell and wind, it’s looking more interesting for the kite crew than for us paddle surfers.
After that, the swell drops right out. We’re looking at tiny waves from Friday the 21st through Sunday the 23rd, with long-period groundswell from the southwest that won’t have any push. The water’s a touch warmer than usual for this time of year, sitting around 64°, which is a bit of a novelty for the first break we talk about on the 15th, but it doesn’t help the surf.
It’s not until Tuesday the 25th that things start to turn, but even then, it’s just small and clean. The winds go offshore from the east on the 25th and 26th, and that’s a massive improvement. We’re looking at ankle to knee-high waves, 2ft to 3ft, but at least it’s clean. The energy is still weak, under 100.
The first real standout of the window looks like Thursday the 27th. We’ve got a 4ft west swell with a 9-second period, and a light offshore wind from the east. It’s not huge, but it’s clean and should be fun. The energy is moderate (236), and it’s holding on Friday the 28th with a bit more size, 4ft, from the west on a 10-second period. That Friday morning looks the pick of the bunch, gentle offshore breeze and some proper shape. That’s what we’ve been waiting for.
Saturday the 29th flattens out again with a fresh offshore wind and small waves, and Sunday the 30th fades out with a cross-onshore breeze ruining the clean conditions. So, in all, this is a long, flat, and mostly blown-out stretch, with a small window of clean, rideable surf right at the end of the first week. Mark your calendar for Thursday the 27th and Friday the 28th; those are your best bets.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat night. Very mild (max 17°C on Sun afternoon, min 12°C on Sat night). Winds increasing (light winds from the W on Sat night, fresh winds from the SW by Mon afternoon). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Tue night. Very mild (max 16°C on Wed morning, min 12°C on Thu night). Winds decreasing (fresh winds from the W on Wed morning, light winds from the N by Thu night). | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | NW 7 | WSW 7 | W 8 | W 8 | WSW 8 | W 7 | W 8 | W 8 | W 10 | W 9 | W 10 | WNW 10 | WNW 9 | WNW 9 | NW 8 | WNW 8 | WNW 8 | WSW 11 | WSW 10 | WSW 10 | WSW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 14 | 186 | 161 | 100 | 120 | 204 | 249 | 396 | 799 | 1052 | 1138 | 681 | 300 | 176 | 69 | 25 | 23 | 22 | 33 | 32 | 16 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | on | cross-on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross | cross-off |
High Tide | 8:23AM4.30m | 8:34PM4.40m | 9:01AM4.10m | 9:13PM4.08m | 9:39AM3.84m | 9:54PM3.73m | 10:20AM3.57m | 10:40PM3.37m | 11:08AM3.30m | 11:39PM3.07m | 12:12PM3.10m | 00:57AM2.90m | 1:36PM3.05m | 2:29AM2.93m | |||||||
Low Tide | 2:14PM0.35m | 2:38AM0.24m | 2:52PM0.59m | 3:14AM0.59m | 3:31PM0.89m | 3:51AM0.98m | 4:14PM1.22m | 4:34AM1.36m | 5:10PM1.53m | 5:37AM1.68m | 6:46PM1.73m | 7:27AM1.81m | 8:34PM1.66m | ||||||||
 |  |  |  | |  | | |  | |  |  | | |  |  | | | | | | |
 | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — |
 | — | — | 9:02 | — | — | 9:00 | — | 8:58 | — | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — |
mm | 1 | — | — | — | — | 1 | — | — | 1 | 1 | 2 | — | 1 | 1 | — | — | — | 1 | — | — | — |
Temp °C | 15 | 17 | 16 | 16 | 17 | 17 | 15 | 16 | 15 | 16 | 15 | 14 | 15 | 16 | 13 | 15 | 15 | 13 | 15 | 16 | 13 |
Feels °C | 12 | 15 | 15 | 12 | 12 | 14 | 12 | 12 | 11 | 10 | 9 | 8 | 10 | 10 | 8 | 11 | 10 | 8 | 10 | 11 | 8 |
Swell 1 Height (m) Direction Period (s) | NW 7 | — | W 8 | — | — | — | SW 17 | SW 17 | SW 17 | — | SW 16 | WNW 10 | WNW 9 | WSW 9 | NW 8 | WNW 8 | WNW 8 | NW 4 | WSW 10 | WSW 10 | NW 4 |
| kJ | 14 | — | 161 | — | — | — | 11 | 11 | 12 | — | 10 | 681 | 300 | 25 | 69 | 25 | 22 | 7 | 33 | 32 | 5 |
Swell 2 Height (m) Direction Period (s) | WSW 7 | — | NW 7 | — | — | — | — | — | — | — | — | SW 16 | SW 15 | SW 15 | W 9 | WSW 8 | WSW 8 | WSW 8 | WNW 7 | SW 15 | WSW 9 |
| kJ | 10 | — | 2 | — | — | — | — | — | — | — | — | 10 | 9 | 8 | 39 | 24 | 23 | 13 | 4 | 9 | 16 |
Swell 3 Height (m) Direction Period (s) | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 14 | SW 13 | W 12 | WSW 11 | SW 15 | W 10 | SW 15 |
| kJ | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 7 | 3 | 22 | 9 | 2 | 9 |
Wind waves Height (m) Direction Period (s) | WSW 4 | WSW 7 | — | W 8 | WSW 8 | W 7 | W 8 | W 8 | W 10 | W 9 | W 10 | — | — | WNW 9 | — | — | — | NNE 4 | NNE 3 | NNW 6 | NNE 3 |
| kJ | 13 | 186 | — | 100 | 120 | 204 | 249 | 396 | 799 | 1052 | 1138 | — | — | 176 | — | — | — | 11 | 4 | 8 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 66 | 89 | 80 | 153 | 89 | 106 | 602 | 150 | 643 | 84 | 465 | 304 | 84 | 197 | 575 | 96 | 49 | 150 | 95 | 95 | 258 |
Best forecast wave conditions in Clare | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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Information about the Cornish Reef Surf forecast
The above surf forecast table for Cornish Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cornish Reef can be found by selecting the local surf guide option on the grey menu. Our Cornish Reef 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 (Cornish Reef) 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 Cornish Reef 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 Clare? If you are looking for accommodation near Cornish Reef, camping, hotels and holiday cottages in Clare, consider staying in Inis which is 27 km (17 miles) away. Other places in and around Clare where you can find information about places to rent, and car hire include Foynes which is 38 km (24 miles) away, Shannon, Galway and Limerick.
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