
Surf Forecasts:
Ersary beach (Barra) surf forecast from 4 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 1PM (local time) - 3ft (0.9m), 6s period, WNW swell with cross-offshore winds.
- Most powerful swell: Saturday 8 Aug, 1AM (local time) - 10ft (3.0m), 9s period, SW swell with 1,624 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 1PM (local time) - 3ft (0.9m), 6s period with WNW swell.
Best Forecast Surf Conditions for Ersary beach (Barra) this week:
The surf forecast for Ersary beach (Barra) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 05) at 1PM. The primary swell is predicted to be 0.9m and 6s period with a secondary swell of 0.3m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ersary beach (Barra) in the next 16 days are 3.0m 9s and forecast to arrive on Saturday (Aug 08) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Tuesday (Aug 04) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Wed 5th Aug) | 3ft (0.9m) 6s |
| Best Surf | 1PM (Wed 5th Aug) | 3ft (0.9m) 6s |
| Most Powerful | 1AM (Sat 8th Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Ersary beach (Barra) over the next 16 days.
The Lowdown
Alright mates, Rusty here, checking in on Ersary beach on Barra. Got to be honest, this one’s a bit of a heartbreaker.
The first week is a total loss. The wind is mostly onshore or cross-on, and when it’s not, the swell is knee-high or has no guts. We get a lot of raw energy kicking in from the 7th of August, with combined swell energy readings hitting the hundreds and even thousands (like 542 on Friday morning and 1109 on Friday afternoon), but it’s all blown out by strong winds. That 8ft swell on the 8th of August? Forget it – the wind is a near gale. That’s not for surfing, that’s a survival drill.
There’s a big hole here. From the start right through the 9th, there’s nothing worth suiting up for. The water temp is about normal for the season, so no worries there, but you won’t be feeling it anyway.
Monday, the 10th of August is the first glimmer. Ersary beach (Barra) faces the NW, and we get a 3ft swell from the west with a 8-second interval. The combined energy is 245, so it’s moderate, but the wind is a clean cross-offshore from the NE at 12 mph. It’s small, it’s clean. The score is a 1 out of 10, so it’s marginal, but it’s the best we’ve seen in a while. It’s a consistent break, so it’ll be breaking, but it’s tiny. A beginner might get a few foamies.
Then we go dead again. The 11th and 12th drop to 1.0ft and 1ft swells, with off or cross-off wind, but no power. The middle of the month is a dry spell.
Sunday, the 16th of August – hold onto your hat. The combined swell energy is a massive 1026 in the morning, then 2388 in the afternoon. That’s serious power. The swell is 8ft from the WSW in the morning, building to 12ft from the west in the afternoon, with a 10-second interval. That’s a strong groundswell. But the wind is cross-on from the NNW at 16 mph. It’s going to be big, messy, and dangerous. This is expert territory only – 8ft is the cut-off, and 12ft is for the brave or the silly. The 10-second interval gives it some shape, but that cross-on wind will make it lumpy and hard to paddle into. If you’re not a local charger, stay on the sand.
Monday, the 17th of August is the real standout. We’ve got 8ft from the west, 10-second interval, combined energy of 1328. The wind is cross-off from the south at 22 mph in the afternoon. That’s a big, powerful, clean wave. It’s a marginal score of 2 out of 10 due to iffy tide conditions, but if you know the bank, there could be a gem. The 8ft size means it’s not for beginners, but for a solid intermediate or expert, this is the one to aim for.
The last few days, the 18th and 19th, fade out. The swell is there, but the wind goes onshore, and the energy drops to 260, then 390. It’s just not happening.
So, the best of the bunch? Monday, the 17th of August afternoon. It’s the only window where a big, clean, west swell hits with a decent interval and cross-off wind. It’s a gamble with the tide, but it’s the one to circle on the calendar. Everything else is a battle.
Rusty out.
Short Range ForecastHeavy rain (total 27mm), heaviest during Tue afternoon. Very mild (max 15°C on Tue afternoon, min 12°C on Wed night). Mainly strong winds. | Days 4-6 Weather SummaryHeavy rain (total 29mm), heaviest during Sat afternoon. Very mild (max 15°C on Sat afternoon, min 13°C on Thu night). Winds decreasing (near gales from the SW on Fri night, moderate winds from the W by Sun afternoon). | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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) | NNW 8 | NNW 8 | NW 6 | WNW 6 | NNW 5 | NNW 6 | WNW 6 | W 5 | WSW 5 | WSW 7 | WSW 9 | SW 9 | WSW 9 | WSW 9 | W 10 | W 10 | W 9 | W 9 | N 10 | WSW 7 | WSW 7 |
Wave Graph | |||||||||||||||||||||
13 | 37 | 14 | 35 | 69 | 124 | 49 | 25 | 60 | 542 | 1109 | 1624 | 1109 | 1020 | 1537 | 799 | 588 | 290 | 124 | 73 | 26 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | cross-on | cross-on | on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross | cross-off |
High Tide | 10:23AM3.03m | 10:44PM3.04m | 11:07AM2.90m | 11:32PM2.88m | 12:01PM2.76m | 00:33AM2.72m | 1:11PM2.64m | 1:54AM2.62m | 2:38PM2.64m | 3:25AM2.67m | 4:04PM2.81m | 4:42AM2.85m | 5:11PM3.08m | ||||||||
Low Tide | 4:10AM0.44m | 4:26PM0.51m | 4:52AM0.59m | 5:12PM0.68m | 5:42AM0.76m | 6:11PM0.86m | 6:50AM0.93m | 7:32PM0.98m | 8:17AM1.00m | 9:05PM0.94m | 9:44AM0.89m | 10:25PM0.73m | 10:53AM0.66m | 11:27PM0.46m | |||||||
5:33 | — | — | 5:35 | — | — | 5:37 | — | — | 5:39 | — | — | 5:41 | — | — | 5:43 | — | — | 5:45 | — | — | |
— | — | 9:37 | — | — | 9:35 | — | — | 9:31 | — | — | 9:30 | — | — | 9:28 | — | — | 9:25 | — | — | 9:22 | |
mm | 4 | 8 | — | — | 1 | — | — | 2 | 2 | 3 | 2 | 10 | 3 | 7 | — | — | 2 | 1 | — | — | — |
Temp °C | 14 | 15 | 15 | 15 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 15 | 13 | 14 | 13 | 13 | 11 | 12 | 12 |
Feels °C | 10 | 14 | 14 | 14 | 5 | 6 | 8 | 8 | 8 | 6 | 6 | 5 | 8 | 6 | 6 | 9 | 8 | 10 | 6 | 7 | 7 |
Swell 1 Height (m) Direction Period (s) | SSE 6 | NNW 8 | NW 6 | WNW 6 | W 6 | WSW 8 | WSW 10 | WSW 10 | W 9 | — | — | — | N 10 | N 9 | — | — | NW 11 | W 9 | W 8 | WSW 7 | WSW 7 |
27 | 37 | 13 | 35 | 50 | 14 | 20 | 18 | 28 | — | — | — | 2 | 2 | — | — | 155 | 290 | 124 | 73 | 26 | |
Swell 2 Height (m) Direction Period (s) | SSW 8 | SSW 8 | SE 4 | NNW 8 | WSW 9 | S 13 | S 13 | S 13 | S 13 | — | — | — | — | — | — | — | N 11 | NNW 10 | S 12 | NNW 10 | NW 8 |
13 | 12 | 5 | 7 | 16 | 4 | 3 | 3 | 3 | — | — | — | — | — | — | — | 2 | 146 | 3 | 52 | 15 | |
Swell 3 Height (m) Direction Period (s) | NNW 8 | W 9 | NNW 8 | SE 3 | — | S 13 | — | S 13 | — | — | — | — | — | — | — | — | — | NW 12 | S 12 | WNW 9 | NNW 7 |
13 | 2 | 14 | 1 | — | 4 | — | 3 | — | — | — | — | — | — | — | — | — | 21 | 3 | 9 | 9 | |
Wind waves Height (m) Direction Period (s) | E 4 | SE 5 | — | — | NNW 5 | NNW 6 | WNW 6 | W 5 | WSW 5 | WSW 7 | WSW 9 | SW 9 | WSW 9 | WSW 9 | W 10 | W 10 | W 9 | — | N 10 | NNE 3 | — |
16 | 25 | — | — | 69 | 124 | 49 | 25 | 60 | 542 | 1109 | 1624 | 1109 | 1020 | 1537 | 799 | 588 | — | 121 | 1 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 184 | 130 | 130 | 67 | 325 | 791 | 306 | 200 | 235 | 252 | 290 | 209 | 209 | 326 | 209 | 184 | 208 | 184 | 69 | 71 | 66 |
Best forecast wave conditions in Outer Hebrides | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Ersary beach (Barra) Surf forecast
The above surf forecast table for Ersary beach (Barra) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ersary beach (Barra) can be found by selecting the local surf guide option on the grey menu. Our Ersary beach (Barra) 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 (Ersary beach (Barra)) 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 Ersary beach (Barra) 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 Outer Hebrides? If you are looking for accommodation near Ersary beach (Barra), camping, hotels and holiday cottages in Outer Hebrides, consider staying in Tiree which is 69 km (43 miles) away. Other places in and around Outer Hebrides where you can find information about places to rent, and car hire include Portree which is 86 km (53 miles) away and Mallaig, 99 km (61 miles) away.











