Surf Forecasts:
Ersary beach (Barra) surf forecast from 25 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 7PM (local time) - 3ft (0.9m), 9s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 1 Sep, 4PM (local time) - 6ft (1.8m), 8s period, SW swell with 439 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 7PM (local time) - 3ft (0.9m), 9s period with WSW 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 Tuesday (Aug 25) at 7PM. The primary swell is predicted to be 0.9m and 9s period. 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 1.8m 8s and forecast to arrive on Tuesday (Sep 01) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 6s period and expected on Tuesday (Sep 01) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Tue 25th Aug) | 3ft (0.9m) 9s |
| Best Surf | 7PM (Tue 25th Aug) | 3ft (0.9m) 9s |
| Most Powerful | 4PM (Tue 1st Sep) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Ersary beach (Barra) over the next 16 days.
The Lowdown
Alright, let’s get into it. This is Ersary beach on Barra, and it’s a quiet stretch of sand that’s usually pretty consistent. The water temp is sitting at 58°, which is pretty much normal for this time of year, so no surprises there.
The outlook starts on Tuesday the 25th of August, and honestly, the first few days are a real struggle. Tuesday morning brings a 4ft swell from the WSW, but the wind is a cross-off at 30 km/h and the conditions are just poor. The combined wave energy is moderate (288), but it’s not doing us any favours. Tuesday afternoon is more of the same, and Wednesday the 26th is tiny – we’re looking at 2ft in the morning and 1ft in the afternoon, with offshore wind on Wednesday morning which is a nice touch, but there’s just no power behind it. The energy readings are low (43 and 32). Thursday and Friday are equally weak, with onshore winds and poor surf. Saturday the 29th stays poor, with onshore winds and a messy 4ft swell.
We finally get a little glimmer on Sunday the 30th of August. The morning shows a 2ft swell from the SW, with a light cross-off breeze from the south at 10 km/h. The combined energy is moderate (103), and the surf is clean but very ordinary. Sunday afternoon is similar, with a 2ft swell from the NNW and energy at 111. It’s surfable, but nothing to get excited about.
Monday the 31st is a write-off with strong onshore winds and a messy 4ft. Tuesday the 1st of September gets wild – a 6ft swell from the SW, but the wind is a strong cross-shore at 45 km/h, and the energy jumps to 441, but it’s just a washing machine. Wednesday the 2nd gets gnarly with a 10ft swell and gale-force onshore winds, energy hitting 588 in the morning and a massive 1362 in the afternoon. That’s strong wave energy, but it’s blown out.
Now, here’s where it gets interesting. Thursday the 3rd of September, the morning is a standout. There’s a 10ft swell from the west, with a period of 10 seconds, and the wind is offshore from the ESE at 25 km/h. The combined energy is a huge 1426, and the forecast says wind and tide are favorable. But here’s the catch – that swell is way too big for this break. It’s over 8ft, so this is really only for experts, and even then, it’s going to be a serious challenge. The afternoon is a mess again with cross-on winds.
Friday the 4th is also messy with strong onshore winds and a 7ft swell. Saturday the 5th of September has a moment of calm – the morning is glassy, with a light wind from the northwest at 5 km/h, and a 5ft swell from the SW. The energy is moderate (293), and the conditions are glassy, which is a major positive. This is the best session on offer for the whole run, but the swell is still a bit much for beginners. Sunday the 6th has a 7ft swell from the SW with a long period of 12 seconds, but the wind is a fresh cross-off at 35 km/h, and the energy is very strong (1251). It’s clean, but conditions are questionable.
The second week is a real mess. Monday the 7th is gale-force cross-onshore, Tuesday the 8th is a total write-off with a 10ft swell and a very long period of 15 seconds, and energy readings of 2452 and 4554 – that’s very strong energy, but the wind is a near gale and gale force, so it’s completely blown out. Wednesday the 9th is more of the same. There’s nothing surfable in that last week.
So, the only real standout is Saturday the 5th of September morning – glassy conditions, 5ft swell, and a clean window. But it’s a big swell for a beginner spot. The other possible highlight is Thursday the 3rd of September morning for the experienced crew only, given the size and offshore wind. Everything else is a miss. There’s a long gap of poor conditions from the 25th right through to the 30th, and then again from the 6th onward. This is a tough run for Ersary.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed night. Very mild (max 19°C on Wed night, min 14°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Sun night. Very mild (max 15°C on Fri afternoon, min 12°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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 | SW 9 | WSW 8 | WSW 8 | W 10 | W 9 | W 9 | W 8 | NW 5 | NW 6 | NW 6 | NW 6 | NW 6 | NW 7 | SW 9 | NNW 8 | SW 8 | WSW 10 | WSW 10 | SW 9 |
Wave Graph | |||||||||||||||||||||
281 | 192 | 79 | 43 | 23 | 66 | 57 | 36 | 21 | 17 | 33 | 32 | 60 | 89 | 91 | 49 | 54 | 53 | 88 | 258 | 379 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | on | cross-on | on | cross-on | cross-off | cross-off | cross-on | on | cross-on | cross |
High Tide | 5:49PM2.89m | 6:05AM2.87m | 6:23PM3.10m | 6:37AM3.06m | 6:54PM3.27m | 7:08AM3.22m | 7:25PM3.41m | 7:39AM3.33m | 7:55PM3.48m | 8:10AM3.38m | 8:27PM3.50m | 8:42AM3.38m | 9:00PM3.44m | ||||||||
Low Tide | 11:31AM0.82m | 11:55PM0.72m | 12:06PM0.58m | 00:28AM0.50m | 12:39PM0.36m | 00:59AM0.31m | 1:10PM0.20m | 1:30AM0.18m | 1:41PM0.09m | 2:00AM0.10m | 2:12PM0.06m | 2:32AM0.10m | 2:45PM0.10m | 3:05AM0.18m | |||||||
6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | |
— | 8:45 | — | — | 8:43 | — | — | 8:40 | — | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — | |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | 3 | 8 | 1 | — | 10 |
Temp °C | 15 | 16 | 17 | 16 | 18 | 19 | 16 | 17 | 16 | 14 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 12 | 13 | 13 | 15 |
Feels °C | 9 | 12 | 14 | 12 | 14 | 15 | 14 | 14 | 13 | 11 | 12 | 12 | 11 | 11 | 11 | 12 | 13 | 6 | 8 | 5 | 8 |
Swell 1 Height (m) Direction Period (s) | WSW 10 | WSW 10 | SW 9 | WSW 8 | WSW 8 | W 10 | W 9 | W 9 | W 8 | W 7 | W 7 | S 12 | S 11 | — | NW 7 | NNW 7 | SW 8 | SW 8 | WSW 10 | N 10 | N 9 |
281 | 192 | 79 | 43 | 23 | 66 | 57 | 36 | 21 | 9 | 4 | 3 | 3 | — | 91 | 46 | 53 | 53 | 88 | 8 | 7 | |
Swell 2 Height (m) Direction Period (s) | SW 13 | SSE 5 | WNW 8 | SSE 5 | SSE 5 | SW 7 | SE 4 | SE 5 | S 12 | S 12 | S 12 | — | S 12 | S 11 | W 9 | SW 9 | NNW 8 | NW 7 | N 6 | NW 10 | — |
7 | 17 | 6 | 9 | 6 | 8 | 2 | 3 | 3 | 3 | 3 | — | 3 | 2 | 6 | 49 | 54 | 26 | 3 | 4 | — | |
Swell 3 Height (m) Direction Period (s) | — | W 8 | S 13 | S 13 | W 11 | — | — | S 12 | — | S 12 | — | — | W 11 | — | SW 11 | W 5 | W 5 | WSW 11 | N 10 | — | — |
— | 1 | 3 | 3 | 9 | — | — | 3 | — | 3 | — | — | 2 | — | 5 | 8 | 4 | 12 | 8 | — | — | |
Wind waves Height (m) Direction Period (s) | SSE 4 | — | SE 4 | ENE 3 | ENE 3 | NNE 3 | E 3 | ENE 3 | NNW 3 | NW 5 | NW 6 | NW 6 | NW 6 | NW 6 | — | NNE 3 | — | — | W 4 | WSW 10 | SW 9 |
18 | — | 8 | 3 | 2 | 1 | 1 | 1 | 3 | 17 | 33 | 32 | 60 | 89 | — | 1 | — | — | 17 | 258 | 379 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 68 | 64 | 0 | 66 | 128 | 0 | 64 | 71 | 215 | 295 | 235 | 130 | 135 | 504 | 184 | 0 | 0 | 128 | 128 | 235 | 147 |
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.











