Surf Forecasts:
Annascaul Rivermouth surf forecast from 8 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 10AM (local time) - 10ft (3.0m), 10s period, SW swell with 1,389 kJ wave energy.
Best Forecast Surf Conditions for Annascaul Rivermouth this week:
The most powerful waves expected at Annascaul Rivermouth in the next 16 days are 3.0m 10s and forecast to arrive on Thursday (Sep 10) 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 3.5m 11s period and expected on Tuesday (Sep 08) at 1PM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Thu 10th Sep) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Annascaul Rivermouth over the next 16 days.
The Lowdown
Alright folks, Rusty here with the long-range look for Annascaul Rivermouth. It's a tough start with a whole lot of waiting, but there's a light at the end of the tunnel if you're patient.
We’re looking at a real dry spell to kick things off. The first week is pretty much a write-off, with a big gap from now through mid-September where the surf is just not cooperating. We're talking days of tiny, weak swell and wonky winds. It's going to be flat and frustrating, so maybe give the boards a rest and sort out the shed.
Now, things start to get interesting as we head into the second week, and the standout window is shaping up around the 17th of September. We get a pulse of cleaner conditions that morning with a glassy surface light wind from the SE. The swell will be a solid 6ft from the West, but the real kicker is that the combined energy is a solid moderate level (714). It’s still a bit on the bigger side for beginners, but for the intermediate crew, this Thursday morning has "go time" written all over it.
After a small lull, the real prize comes into view on the 20th of September. Sunday afternoon sees the swell bump up to 6ft from the West with a longer 12-second period, pushing the combined energy up into a strong 915. The wind goes clean and cross-offshore from the ESE. It’s a recipe for some proper lines off the rivermouth.
But the absolute standout, the one to circle on the calendar, is the 22nd of September. Tuesday morning is looking absolutely mint. You’ve got a clean 8ft groundswell from the WNW with a very long 14-second period - that’s proper energy, clocking in at a hefty 2218. The wind is glassy offshore from the East. This is big, powerful water though, over 8ft, so this is strictly for the experienced crew who know how to handle a heavy rivermouth. For those guys, this is going to be the session of the month.
Beyond that, the quality tails off, but the late window on the 21st and early 23rd still offers some clean, ridable waves with that cross-off wind, even if the swell is a bit smaller. It’s been a long wait, but the end of the forecast period looks worth it. Stay tuned, and keep an eye on that 22nd.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Thu morning. Very mild (max 17°C on Thu afternoon, min 13°C on Tue night). Winds decreasing (fresh winds from the NW on Tue morning, light winds from the WSW by Tue night). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Sat morning. Very mild (max 18°C on Sat afternoon, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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 11 | SW 11 | W 9 | W 14 | WNW 8 | SW 6 | SW 10 | WSW 10 | W 9 | W 8 | S 16 | S 4 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WNW 11 | W 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 5 | 450 | 4 | 202 | 193 | 1389 | 1077 | 691 | 601 | 5 | 50 | 1033 | 928 | 708 | 337 | 257 | 125 | 146 | 593 | 867 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | on | on | cross-on | cross-on | on | cross | cross-on | cross-on | cross-on | cross-on | on | on | on | on | cross-on | cross-on | on | on |
High Tide | 3:25PM3.19m | 4:01AM3.19m | 4:14PM3.44m | 4:46AM3.40m | 4:58PM3.63m | 5:27AM3.54m | 5:38PM3.72m | 6:04AM3.59m | 6:15PM3.70m | 6:39AM3.56m | 6:52PM3.59m | 7:14AM3.44m | 7:27PM3.40m | ||||||||
Low Tide | 9:43PM0.34m | 10:00AM0.48m | 10:28PM0.10m | 10:43AM0.28m | 11:08PM-0.06m | 11:21AM0.15m | 11:45PM-0.12m | 11:58AM0.10m | 00:20AM-0.08m | 12:34PM0.14m | 00:54AM0.06m | 1:09PM0.25m | 1:27AM0.27m | ||||||||
 |  |  | | |  |  | |  | |  | | | |  | | | | | |  | |
 | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — | 7:07 | — | — | 7:07 | — | — | 7:09 | — | — | 7:11 | — | — |
 | — | 8:12 | — | — | 8:09 | — | — | 8:07 | — | — | 8:05 | — | — | 8:02 | — | — | 8:00 | — | — | 7:58 | — |
mm | — | 1 | — | — | — | 1 | 3 | — | — | — | — | — | 4 | 4 | — | — | — | — | — | 1 | 6 |
Temp °C | 15 | 15 | 14 | 16 | 16 | 15 | 16 | 17 | 15 | 15 | 15 | 15 | 17 | 18 | 17 | 17 | 18 | 17 | 19 | 18 | 18 |
Feels °C | 8 | 9 | 10 | 13 | 12 | 11 | 15 | 15 | 13 | 13 | 13 | 12 | 16 | 18 | 17 | 16 | 17 | 17 | 18 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 11 | NNW 10 | WNW 9 | WNW 8 | WNW 8 | N 8 | N 8 | — | W 8 | WNW 9 | WNW 13 | NW 13 | NW 13 | NW 12 | NW 11 | NW 10 | WSW 8 | WSW 8 | WNW 11 | W 10 |
| kJ | 5 | 5 | 1124 | 443 | 202 | 74 | 12 | 5 | — | 601 | 758 | 2507 | 1634 | 1609 | 1468 | 791 | 400 | 125 | 146 | 593 | 867 |
Swell 2 Height (m) Direction Period (s) | — | — | W 9 | N 10 | N 10 | N 9 | — | — | — | NW 10 | WNW 17 | — | SW 15 | SW 15 | WSW 9 | WSW 9 | WSW 9 | NW 10 | WNW 9 | SW 7 | N 12 |
| kJ | — | — | 450 | 468 | 279 | 99 | — | — | — | 35 | 29 | — | 8 | 8 | 708 | 337 | 257 | 134 | 103 | 54 | 45 |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 10 | W 14 | NW 9 | W 11 | — | — | — | — | S 16 | — | — | — | N 10 | SW 13 | SW 13 | N 14 | N 13 | N 13 | SW 12 |
| kJ | — | — | 10 | 4 | 13 | 22 | — | — | — | — | 5 | — | — | — | 2 | 7 | 7 | 4 | 30 | 29 | 6 |
Wind waves Height (m) Direction Period (s) | WNW 10 | NW 11 | — | — | SW 7 | SW 6 | SW 10 | WSW 10 | W 9 | — | — | S 4 | WSW 9 | WSW 9 | — | — | — | S 4 | — | — | — |
| kJ | 2024 | 2672 | — | — | 27 | 193 | 1389 | 1077 | 691 | — | — | 50 | 1033 | 928 | — | — | — | 9 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 410 | 1016 | 244 | 13 | 24 | 244 | 13 | 142 | 112 | 13 | 13 | 8 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
Best forecast wave conditions in Kerry | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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Information about the Annascaul Rivermouth Surf forecast
The above surf forecast table for Annascaul Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Annascaul Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Annascaul Rivermouth 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 (Annascaul Rivermouth) 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 Annascaul Rivermouth 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 Annascaul Rivermouth, camping, hotels and holiday cottages in Kerry, consider staying in Fenit which is 21 km (13 miles) away. Other places in and around Kerry where you can find information about places to rent, and car hire include Valentia which is 27 km (17 miles) away, Tra Li, Bantry and Foynes.
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