Surf Forecasts:
Annascaul Rivermouth surf forecast from 12 Sep 2026:
- Most powerful swell: Tuesday 15 Sep, 4PM (local time) - 10ft (3.0m), 9s period, W swell with 1,587 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 9s and forecast to arrive on Tuesday (Sep 15) 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 4.5m 14s period and expected on Thursday (Sep 17) at 7PM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Tue 15th Sep) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Annascaul Rivermouth over the next 16 days.
The Lowdown
Right, folks, Rusty here. Let’s have a look at what’s on the cards for Annascaul Rivermouth.
Straight up, it’s a bit of a rough start. We’ve got a solid run of poor surf conditions right through the first week, with onshore and cross-onshore winds messing things up. The waiting game is on, and it’s a long one—nearly two weeks of frustrating, choppy, and rain-soaked days before we see anything worth paddling out for.
The standout window is shining through on September 25th. That Friday afternoon is the one to circle. The swell is coming in at a solid 10ft from the WNW, with a period of 11 seconds—that’s proper groundswell, packing some serious punch with a combined wave energy of 1890. But the real beauty is the wind: glassy. Absolutely dead flat. That’s a rare treat, and it’s going to make for some incredibly clean waves at this sheltered spot. The water temperature is a touch warmer than normal for this time of year, sitting about 2°F above average at 62°F, so it’s pleasant.
The swell direction from the WNW isn’t the absolute optimum for this break, but with that size and those perfect conditions, we’re talking about some serious, well-shaped lines. At 10ft, this is big wave territory—definitely for experienced surfers only. You can expect bigger sets and longer lulls, so paddle out when you can. Crowds are sometimes an issue here, but with conditions this good and the wait we’ve had, expect a few locals itching to go.
Before that, on September 23rd, there’s a sniff of something with an 8ft W swell and a 9-second period, but it’s cross-on and the conditions are rated as marginal. It might be worth a look for the desperate, but it won’t hold a candle to the Friday.
After that Friday session, the wind turns ugly again and the swell drops right off, so make the most of it. The long-range forecast into the last week looks like a write-off with strong winds and tiny surf on the horizon.
-Rusty
Short Range ForecastHeavy rain (total 24mm), heaviest during Mon afternoon. Very mild (max 19°C on Sun afternoon, min 14°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Tue morning. Very mild (max 15°C on Tue morning, min 13°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 9 | WSW 9 | WSW 10 | WSW 10 | WSW 9 | WSW 8 | SW 8 | WSW 8 | W 10 | W 10 | W 9 | S 11 | S 11 | S 13 | WNW 9 | WNW 10 | WNW 11 | WNW 14 | SW 18 | SW 18 | SW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 853 | 875 | 600 | 399 | 254 | 207 | 306 | 575 | 804 | 895 | 1587 | 2 | 2 | 3 | 1033 | 0 | 0 | 0 | 12 | 12 | 176 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | on | on | cross-on | on | on | cross-on | cross | cross | cross-on | cross-on | cross | cross | cross-on | cross-on | on | on | cross-on |
High Tide | 6:15PM3.70m | 6:39AM3.56m | 6:52PM3.59m | 7:14AM3.44m | 7:27PM3.40m | 7:47AM3.26m | 8:03PM3.15m | 8:22AM3.04m | 8:41PM2.88m | 9:00AM2.79m | 9:25PM2.60m | 9:47AM2.56m | 10:24PM2.36m | ||||||||
Low Tide | 11:58AM0.10m | 00:20AM-0.08m | 12:34PM0.14m | 00:54AM0.06m | 1:09PM0.25m | 1:27AM0.27m | 1:43PM0.43m | 2:00AM0.53m | 2:20PM0.66m | 2:36AM0.81m | 3:00PM0.91m | 3:17AM1.09m | 3:52PM1.16m | ||||||||
 |  |  |  | |  |  | | | | | | | |  | | | | | | | |
 | 7:07 | — | — | 7:09 | — | — | 7:11 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — | 7:18 | — | — |
 | — | 8:02 | — | — | 8:00 | — | — | 7:58 | — | — | 7:55 | — | — | 7:53 | — | — | 7:51 | — | — | 7:49 | — |
mm | 4 | — | — | — | — | 1 | 7 | 9 | 3 | 2 | 1 | — | — | — | 2 | — | — | — | — | — | 4 |
Temp °C | 17 | 18 | 16 | 18 | 19 | 17 | 18 | 17 | 16 | 15 | 15 | 14 | 13 | 15 | 15 | 15 | 14 | 14 | 15 | 16 | 16 |
Feels °C | 17 | 18 | 16 | 18 | 18 | 17 | 18 | 15 | 15 | 10 | 10 | 9 | 10 | 11 | 12 | 8 | 8 | 10 | 12 | 10 | 12 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | WSW 9 | NW 12 | WSW 10 | WSW 9 | NW 9 | NW 9 | N 13 | NNW 13 | N 12 | N 11 | N 11 | WNW 10 | N 8 | N 9 | — | — | WNW 14 | WNW 13 | WNW 12 | SW 7 |
| kJ | 1488 | 875 | 961 | 399 | 254 | 141 | 62 | 30 | 55 | 72 | 60 | 36 | 1394 | 63 | 6 | — | — | 7020 | 4079 | 2980 | 176 |
Swell 2 Height (m) Direction Period (s) | SW 15 | NW 12 | WSW 10 | NW 11 | NW 10 | SW 13 | WNW 12 | SW 12 | SW 12 | SW 11 | — | S 11 | N 10 | S 13 | S 13 | — | — | — | SW 18 | SW 18 | SW 16 |
| kJ | 8 | 1344 | 600 | 515 | 284 | 7 | 15 | 6 | 6 | 5 | — | 2 | 29 | 3 | 3 | — | — | — | 12 | 12 | 10 |
Swell 3 Height (m) Direction Period (s) | SW 15 | SW 15 | — | SW 13 | SSW 13 | N 16 | N 12 | — | SW 12 | — | — | — | S 11 | — | — | — | — | — | SW 12 | — | SW 12 |
| kJ | 8 | 8 | — | 7 | 17 | 5 | 12 | — | 6 | — | — | — | 2 | — | — | — | — | — | 6 | — | 6 |
Wind waves Height (m) Direction Period (s) | WSW 9 | — | — | — | S 3 | WSW 8 | SW 8 | WSW 8 | W 10 | W 10 | W 9 | WNW 11 | — | WNW 10 | WNW 9 | WNW 10 | WNW 11 | — | — | SW 12 | WNW 11 |
| kJ | 853 | — | — | — | 8 | 207 | 306 | 575 | 804 | 895 | 1587 | 2584 | — | 846 | 1033 | 2079 | 3535 | — | — | 6 | 1875 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 357 | 567 | 416 | 394 | 244 | 652 | 653 | 567 | 567 | 13 | 592 | 949 |
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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