
Surf Forecasts:
Mossies (Brandon Bay) surf forecast from 3 Sep 2026:
- Best quality surf: Saturday 5 Sep, 4AM (local time) - 8ft (2.5m), 12s period, WNW swell with cross-offshore winds.
- Most powerful swell: Friday 4 Sep, 10AM (local time) - 13ft (4.0m), 13s period, WNW swell with 5,243 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 4AM (local time) - 8ft (2.5m), 12s period with WNW swell.
Best Forecast Surf Conditions for Mossies (Brandon Bay) this week:
The surf forecast for Mossies (Brandon Bay) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 05) at 4AM. The primary swell is predicted to be 2.5m and 12s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Mossies (Brandon Bay) in the next 16 days are 4.0m 13s and forecast to arrive on Friday (Sep 04) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Sunday (Sep 06) at 7AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 5th Sep) | 8ft (2.5m) 12s |
| Best Surf | 4AM (Sat 5th Sep) | 8ft (2.5m) 12s |
| Most Powerful | 10AM (Fri 4th Sep) | 13ft (4.0m) 13s |
Table - best surf conditions forecast for Mossies (Brandon Bay) over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's talk about what's cooking at Mossies (Brandon Bay).
Right off the bat, we've got a bit of a rough patch to get through. The first few days of September are pretty grim with onshore winds and messy conditions. The water is sitting at 63°, which is a touch warmer than normal for this time of year, so that's a small comfort. But honestly, the surf is poor until we hit a bit of a window.
The real standout, the one you want to circle, is the morning of Saturday the 5th. We're looking at a solid 7ft swell from the WNW, with a period of 10 seconds. That's a decent groundswell. But the real magic is that wind – it's a gentle offshore breeze from the SSE. That's going to clean things up nicely. The combined swell energy is moderate at 963, so there's some push behind it. The forecast says "expect very good surf conditions," and I'm buzzing for that. It's a reef break, so that longer period will wrap in nicely. This is the pick of the entire outlook.
The afternoon of the 5th will drop off a bit to 6ft, with the wind shifting to cross-offshore. It's a marginal call, but still a session worth having if you're there.
After that, we get a bit of a lull. Sunday the 6th through Monday the 7th sees the swell dropping and the wind getting messy again. There's a spike on Monday the 7th with a 12ft swell from the W, but it's being hammered by a strong cross-onshore breeze – that's a kite-surfing wind, not a paddle-surfing wind. It's lumpy and blown out.
The next flicker of hope comes on Wednesday the 9th. The morning is a bit iffy, but the afternoon shows a 8ft WNW swell with a clean offshore wind from the SE (16 mph). The energy is moderate at 866. It's a marginal call, but with that offshore wind, it could clean up into something fun.
Then we get another gap. Things get blown out again through the 10th and 11th.
The next real mention is on Saturday the 12th. The morning has a 5ft W swell with a clean cross-offshore breeze. It's small, but with a period of 9 seconds, it's a longboard-friendly wave. The energy is low at 373. This is a good session for the log.
Now, looking way out, there's a monster on the horizon for Sunday the 13th of September. We're looking at a massive 12ft swell from the WNW with a very long period of 15 seconds. The combined energy is a whopping 5100. That's a serious, powerful groundswell. The problem is the wind is forecast to be onshore, which is a total bummer. The afternoon score is a 4/10, but still marginal. If that wind swings offshore, it could be an all-time session, but long-range forecasts are less certain, so keep an eye on it. That size is for experts only.
The final decent window is on Tuesday the 15th. Both morning and afternoon show small 3ft to 4ft NW swell with clean offshore or cross-offshore winds. Very light winds make for glassy conditions. It's small, but it's clean. Good for a beginner or a fun end-of-season session.
So, to wrap it up: the clear winner is the morning of Saturday the 5th. If you can only get one session, that's it. The 9th afternoon is a backup, and the 12th morning is for the longboard crew. That big swell on the 13th is a tantalizing promise, but we'll have to wait and see how the wind plays out.
Rusty.
Short Range ForecastModerate rain (total 15mm), heaviest on Thu afternoon. Very mild (max 18°C on Wed afternoon, min 13°C on Fri night). Winds decreasing (fresh winds from the W on Thu night, light winds from the S by Fri night). | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Sun morning. Very mild (max 19°C on Sun afternoon, min 14°C on Mon afternoon). Winds increasing (light winds from the SSE on Sat night, strong winds from the W by Mon afternoon). | |||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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 | W 8 | W 8 | W 8 | W 9 | WNW 13 | WNW 12 | WNW 12 | WNW 10 | WNW 10 | WSW 8 | WSW 8 | WSW 10 | W 9 | W 9 | W 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 |
Wave Graph | ||||||||||||||||||||
186 | 302 | 347 | 460 | 944 | 5243 | 4565 | 2239 | 955 | 518 | 125 | 164 | 356 | 614 | 1082 | 1970 | 2810 | 2054 | 1939 | 1693 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | off | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 9:05PM3.55m | 9:33AM3.44m | 9:58PM3.28m | 10:31AM3.21m | 11:09PM3.02m | 11:49AM3.05m | 00:43AM2.90m | 1:22PM3.09m | 2:17AM3.03m | 2:43PM3.32m | 3:28AM3.31m | 3:45PM3.64m | ||||||||
Low Tide | 3:05AM0.64m | 3:30PM0.83m | 3:56AM0.95m | 4:35PM1.08m | 5:10AM1.23m | 6:11PM1.22m | 6:55AM1.33m | 7:58PM1.08m | 8:28AM1.15m | 9:11PM0.75m | 9:31AM0.86m | 10:05PM0.39m | ||||||||
— | — | 6:52 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | |
8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:12 | — | |
mm | 1 | — | — | 9 | 5 | — | — | — | — | — | — | 2 | 2 | 1 | 3 | — | 2 | 1 | — | — |
Temp °C | 18 | 17 | 18 | 16 | 15 | 16 | 16 | 15 | 15 | 16 | 17 | 18 | 19 | 15 | 15 | 14 | 14 | 15 | 15 | 14 |
Feels °C | 16 | 14 | 16 | 14 | 13 | 10 | 10 | 12 | 12 | 14 | 16 | 16 | 17 | 11 | 9 | 5 | 5 | 8 | 8 | 8 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | NNW 8 | N 8 | NNW 11 | N 10 | — | WNW 12 | WNW 12 | WNW 10 | WNW 10 | WSW 8 | WSW 8 | WSW 10 | W 9 | — | — | — | — | — | — |
37 | 7 | 5 | 22 | 7 | — | 4565 | 2239 | 955 | 518 | 125 | 164 | 356 | 614 | — | — | — | — | — | — | |
Swell 2 Height (m) Direction Period (s) | N 8 | N 12 | N 11 | SW 15 | SW 16 | — | — | — | SW 14 | SW 13 | NW 9 | NNW 8 | — | — | — | — | — | — | — | — |
1 | 3 | 9 | 9 | 9 | — | — | — | 8 | 7 | 97 | 6 | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | SW 16 | W 17 | SW 15 | — | — | — | — | — | — | — | — | WNW 8 | — | — | — | — | — | — | — | — |
10 | 6 | 8 | — | — | — | — | — | — | — | — | 7 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 8 | W 8 | W 8 | W 8 | W 9 | WNW 13 | — | — | — | — | — | — | W 4 | — | W 9 | W 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 |
186 | 302 | 347 | 460 | 944 | 5243 | — | — | — | — | — | — | 18 | — | 1082 | 1970 | 2810 | 2054 | 1939 | 1693 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 227 | 6 | 227 | 603 | 147 | 580 | 147 | 6 | 0 | 6 | 6 | 6 | 8 | 393 | 372 | 794 | 649 | 147 | 649 | 580 |
Best forecast wave conditions in Kerry | ||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the Mossies (Brandon Bay) Surf forecast
The above surf forecast table for Mossies (Brandon Bay) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Mossies (Brandon Bay) can be found by selecting the local surf guide option on the grey menu. Our Mossies (Brandon Bay) 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 (Mossies (Brandon Bay)) 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 Mossies (Brandon Bay) 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 Kerry? If you are looking for accommodation near Mossies, camping, hotels and holiday cottages in Kerry, consider staying in Fenit which is 12 km (7 miles) away. Other places in and around Kerry where you can find information about places to rent, and car hire include Tra Li which is 23 km (14 miles) away, Valentia, Foynes and Bantry.










