Surf Forecasts:
Ersary beach (Barra) surf forecast from 1 Sep 2026:
- Best quality surf: Monday 7 Sep, 10PM (local time) - 10ft (3.0m), 9s period, SW swell with cross-shore winds.
- Most powerful swell: Friday 4 Sep, 4PM (local time) - 15ft (4.5m), 12s period, W swell with 6,146 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 7AM (local time) - 4ft (1.2m), 8s period with W 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 (Sep 02) at 7AM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.3m and 8s. 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 4.5m 12s and forecast to arrive on Friday (Sep 04) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 10s period and expected on Tuesday (Sep 08) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 2nd Sep) | 4ft (1.2m) 8s |
| Best Surf | 10PM (Mon 7th Sep) | 10ft (3.0m) 9s |
| Most Powerful | 4PM (Fri 4th Sep) | 15ft (4.5m) 12s |
Table - best surf conditions forecast for Ersary beach (Barra) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a long, hard look at what Ersary beach (Barra) has got cooking for us over the next couple of weeks. I’ll be straight with you – it’s a bit of a mixed bag, and there’s a fair bit of waiting involved. The combined swell energy is moderate (517) early on, but it kicks up to strong levels later.
The forecast kicks off right away on Tuesday the 1st of September, but it’s not pretty. We’ve got a 7ft SW swell with a short, weak 8-second period, and a howling 22 mph onshore wind from the W. The water temp is about average for the time of year. The waves will be absolutely blown out and messy – it’s a no-go. Thursday the 3rd brings a 5ft SW swell, but that strong 22 mph cross-onshore wind from the SW will chop it to bits. The condition is poor.
We hit a real big, angry spell on Friday the 4th. The swell jumps way up to 15ft from the WSW, with a very long 12-second period. But the wind is screaming from the W at 34 to 40 mph, turning it into a full-blown gale. The combined wave energy is extremely strong (5234). This is not for surfing – it’s more like a washing machine for the brave or a kite session for the lunatics. Stick to the pub.
The wind finally calms down by Wednesday morning the 9th of September. We’ve got a 7ft WSW swell with a moderate 10-second period, and the wind drops to a gentle 9 mph cross-shore breeze. The combined energy is strong (1293) but the conditions are marginal, with a slight cross-chop. It is barely surfable, but not worth getting wet for.
Now, there is a flicker of hope. Look at Monday the 14th of September. The afternoon shows a 7ft SW swell with a decent 12-second period, and the wind switches to a clean cross-offshore from the S at 16 mph. This is the standout of the whole window. The energy is strong (1141) and the wind state is described as “clean.” This is the one to aim for. The waves won’t be perfect, but it’s the best chance of getting a few clean lines. For a beginner, that 7ft swell is at the upper limit, so be cautious.
The last gasp of the forecast on Wednesday the 16th of September has a tiny 2ft WSW swell with a very long 12-second period, and a gentle offshore wind from the SE. The energy is weak (117). It will be clean but knee-high at best.
So, the honest truth: there are massive gaps of poor or unsurfable conditions for the first 12 days. The only real recommendation is to put a pin in Monday the 14th of September. That’s your best shot for a clean session, but don’t expect perfection.
Rusty.
Short Range ForecastModerate rain (total 16mm), heaviest on Wed afternoon. Very mild (max 16°C on Wed night, min 12°C on Tue night). Winds decreasing (strong winds from the SSW on Mon night, light winds from the N by Tue night). | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Sat night. Very mild (max 16°C on Sun morning, min 12°C on Sat night). Winds decreasing (gales from the W on Fri afternoon, light winds from the SSW by Sat night). | ||||||||||||||||||||
Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | |||||||||||||||
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) | SW 8 | WSW 8 | WSW 8 | WSW 8 | NNW 10 | NNW 10 | SW 8 | SW 8 | WSW 10 | WSW 12 | W 12 | W 12 | W 10 | W 9 | W 8 | SW 13 | WSW 9 | SW 10 | WSW 9 | SW 9 | N 9 |
Wave Graph | |||||||||||||||||||||
516 | 464 | 280 | 107 | 85 | 62 | 250 | 634 | 2181 | 5234 | 6146 | 2702 | 932 | 541 | 163 | 7 | 749 | 1639 | 1291 | 1255 | 2 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | off | cross-off | cross-on | cross-on | cross | cross-on | cross-on | on | on | cross-on | cross-on | cross-off | cross | cross-off | cross | cross-on | cross-on | cross-off |
High Tide | 9:16AM3.31m | 9:36PM3.31m | 9:54AM3.17m | 10:16PM3.11m | 10:38AM2.98m | 11:06PM2.87m | 11:35AM2.76m | 00:13AM2.62m | 12:55PM2.58m | 1:48AM2.49m | 2:38PM2.59m | 3:29AM2.58m | 4:05PM2.81m | ||||||||
Low Tide | 3:20PM0.22m | 3:41AM0.33m | 3:59PM0.41m | 4:22AM0.55m | 4:46PM0.65m | 5:14AM0.81m | 5:49PM0.90m | 6:28AM1.04m | 7:22PM1.07m | 8:12AM1.10m | 9:09PM0.99m | 9:45AM0.92m | 10:26PM0.73m | ||||||||
6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | |
— | 8:27 | — | — | 8:24 | — | — | 8:22 | — | — | 8:19 | — | — | 8:16 | — | — | 8:14 | — | — | 8:10 | — | |
mm | 1 | — | — | — | 6 | 2 | — | 2 | 4 | 2 | 2 | — | — | — | 11 | 1 | 2 | 6 | — | — | 1 |
Temp °C | 14 | 13 | 13 | 13 | 15 | 16 | 14 | 15 | 14 | 14 | 14 | 13 | 14 | 14 | 14 | 16 | 16 | 16 | 13 | 13 | 14 |
Feels °C | 8 | 6 | 7 | 9 | 8 | 10 | 8 | 7 | 5 | 3 | 2 | 4 | 9 | 9 | 11 | 9 | 10 | 8 | 6 | 8 | 6 |
Swell 1 Height (m) Direction Period (s) | N 6 | — | WSW 8 | WSW 8 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | N 9 | — | — | — | WSW 10 | SSW 14 | W 8 | SW 13 | WSW 9 | SE 6 | WSW 12 | — | N 9 |
1 | — | 280 | 107 | 85 | 62 | 33 | 18 | 2 | — | — | — | 586 | 19 | 163 | 7 | 749 | 42 | 187 | — | 2 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | NNW 8 | WSW 7 | NW 11 | SW 15 | NW 10 | — | — | — | — | SW 14 | SSW 14 | SW 14 | — | — | — | — | — | — |
— | — | — | 56 | 43 | 18 | 8 | 4 | — | — | — | — | 8 | 19 | 7 | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | SW 18 | NW 13 | S 16 | SW 16 | — | — | — | — | — | — | — | — | SW 14 | — | — | — | — | — | — |
— | — | 12 | 7 | 5 | 10 | — | — | — | — | — | — | — | — | 7 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 8 | WSW 8 | — | — | SSE 4 | SW 6 | SW 8 | SW 8 | WSW 10 | WSW 12 | W 12 | W 12 | W 10 | W 9 | S 5 | SSW 8 | SSW 9 | SW 10 | WSW 9 | SW 9 | SW 9 |
516 | 464 | — | — | 22 | 132 | 250 | 634 | 2181 | 5234 | 6146 | 2702 | 932 | 541 | 61 | 725 | 1288 | 1639 | 1291 | 1255 | 1209 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 252 | 326 | 184 | 0 | 128 | 149 | 336 | 326 | 290 | 983 | 906 | 557 | 209 | 306 | 67 | 135 | 209 | 195 | 326 | 326 | 166 |
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.











