Surf Forecasts:
Ersary beach (Barra) surf forecast from 18 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 10AM (local time) - 6.5ft (2.0m), 10s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 18 Aug, 7PM (local time) - 8ft (2.5m), 10s period, WSW swell with 1,424 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 10AM (local time) - 6.5ft (2.0m), 10s 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 Wednesday (Aug 19) at 10AM. The primary swell is predicted to be 2.0m and 10s 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 2.5m 10s and forecast to arrive on Tuesday (Aug 18) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 10s period and expected on Monday (Aug 24) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Wed 19th Aug) | 6.5ft (2.0m) 10s |
| Best Surf | 10AM (Wed 19th Aug) | 6.5ft (2.0m) 10s |
| Most Powerful | 7PM (Tue 18th Aug) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Ersary beach (Barra) over the next 16 days.
The Lowdown
Alright, let’s break down what’s happening at Ersary beach (Barra). It’s going to be a bit of a waiting game, I won’t lie. The start of the period is a write-off with a fresh cross-onshore wind and lumpy, messy waves. Tuesday the 18th is a dud. We’ve got a long gap of a few days with no real surf to recommend.
The first flicker of something clean comes on Wednesday the 19th. The swell is a bit lumpy at 7ft from the WSW with a period of 10 seconds, but the wind is a gentle cross-offshore, and the combined energy is moderate (904). The conditions are clean, but the forecast is marginal. It's not the best quality, but it's the first time you'll get a clean look. The swell is over 5ft, so it’s not a beginner’s session.
The next real standout is a bit of a surprise. The morning of Sunday the 30th of August. There’s a solid 10ft groundswell from the west, with a period of 9 seconds, pushing in with strong wave energy (1404). The wind is a moderate cross-offshore, keeping it clean. The swell is big, well over 8ft, so this is for experts only. The water temperature is about average for the time of year here.
Then, on Tuesday the 1st of September, we get another big pulse. The swell is 8ft from the WSW, with a period of 10 seconds and very strong wave energy (2125). The wind is onshore, which is a shame, but the forecast is marginal. The swell is too big for beginners.
Honestly, the best on offer is that Sunday the 30th of August morning. It’s the only time the stars align for clean, big waves. For the rest of the period, there’s a lot of poor surf, and the big swells that do come in on the 1st and 2nd of September are either blown out or just too big for this exposed beach break. If you’re an expert, pencil in that Sunday the 30th. Otherwise, it’s a quiet diary.
Rusty
Short Range ForecastModerate rain (total 10mm), heaviest on Tue night. Very mild (max 14°C on Tue morning, min 12°C on Wed night). Winds increasing (light winds from the SE on Wed morning, strong winds from the NNE by Wed night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 14°C on Fri night, min 12°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 8 | WSW 9 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | NNE 5 | N 5 | N 5 | NNW 5 | NNW 5 | SW 8 | SW 10 | NW 6 | NW 6 | SW 9 | SW 9 | WNW 8 | W 11 | WSW 10 | SW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 337 | 587 | 1219 | 746 | 603 | 275 | 108 | 62 | 45 | 35 | 17 | 18 | 24 | 50 | 56 | 20 | 20 | 21 | 112 | 478 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-off | off | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross | cross-off | cross-off | cross-off | off |
High Tide | 10:28AM3.01m | 10:50PM2.92m | 11:08AM2.79m | 11:33PM2.64m | 11:57AM2.56m | 00:28AM2.39m | 1:05PM2.38m | 1:51AM2.25m | 2:43PM2.33m | 3:33AM2.28m | 4:12PM2.45m | 4:43AM2.45m | 5:08PM2.66m | ||||||||
Low Tide | 4:32PM0.57m | 4:53AM0.77m | 5:15PM0.87m | 5:37AM1.04m | 6:09PM1.15m | 6:39AM1.27m | 7:33PM1.34m | 8:14AM1.37m | 9:16PM1.34m | 9:47AM1.27m | 10:30PM1.17m | 10:48AM1.06m | 11:18PM0.95m | ||||||||
 |  |  | | |  |  | | | |  |  | | |  | | | | | | | |
 | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — |
 | — | — | 9:04 | — | — | 9:00 | — | 8:59 | — | — | 8:55 | — | — | 8:53 | — | — | 8:51 | — | — | 8:49 | — |
mm | 1 | — | 4 | 3 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 14 | 14 | 13 | 14 | 12 | 12 | 12 | 12 | 13 | 14 | 14 | 13 | 13 | 12 | 13 | 13 | 13 | 15 | 15 |
Feels °C | 8 | 8 | 10 | 12 | 7 | 7 | 3 | 4 | 5 | 7 | 9 | 10 | 9 | 9 | 10 | 10 | 12 | 11 | 8 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | — | SW 16 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | W 9 | WSW 8 | WSW 9 | WSW 9 | SW 8 | SW 10 | SW 9 | SW 9 | NW 6 | W 8 | WNW 8 | W 11 | WSW 10 | SW 10 |
| kJ | — | 10 | 853 | 746 | 603 | 275 | 96 | 42 | 24 | 8 | 15 | 18 | 24 | 21 | 20 | 20 | 20 | 21 | 112 | 478 | 612 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | S 17 | — | SW 16 | SW 15 | SW 14 | W 8 | W 7 | W 7 | SW 13 | SW 16 | W 9 | SW 9 | SW 9 | SW 8 | WSW 8 | SW 14 | — |
| kJ | — | — | — | — | 6 | — | 10 | 9 | 8 | 5 | 4 | 4 | 7 | 10 | 7 | 20 | 19 | 17 | 7 | 8 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | SW 14 | SW 14 | S 13 | SW 16 | W 10 | SW 15 | W 9 | NW 6 | SSW 14 | SW 14 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 8 | 7 | 3 | 10 | 2 | 8 | 13 | 8 | 19 | 8 | — | — |
Wind waves Height (m) Direction Period (s) | WSW 8 | WSW 9 | WSW 11 | — | SE 4 | N 5 | NNE 5 | N 5 | N 5 | NNW 5 | NNW 5 | NNW 4 | NW 4 | NW 6 | NW 6 | NW 6 | — | SSW 3 | SSE 5 | SSE 6 | SE 6 |
| kJ | 337 | 587 | 1219 | — | 19 | 119 | 108 | 62 | 45 | 35 | 17 | 12 | 19 | 50 | 56 | 8 | — | 1 | 77 | 148 | 36 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 235 | 235 | 149 | 0 | 64 | 148 | 149 | 544 | 301 | 148 | 235 | 295 | 213 | 306 | 128 | 0 | 148 | 130 | 130 | 64 | 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.
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