Surf Forecasts:
Annascaul Rivermouth surf forecast from 4 Sep 2026:
- Most powerful swell: Tuesday 8 Sep, 4AM (local time) - 13ft (4.0m), 10s period, WNW swell with 3,274 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 4.0m 10s and forecast to arrive on Tuesday (Sep 08) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.5m 12s period and expected on Friday (Sep 04) at 10AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Tue 8th Sep) | 13ft (4.0m) 10s |
Table - best surf conditions forecast for Annascaul Rivermouth over the next 16 days.
The Lowdown
Alright mate, let’s talk about Annascaul Rivermouth.
First off, the next few days are a write-off. From Friday the 4th right through the first week, it’s all onshore wind, lumpy slop, and tiny or blown-out swell. The combined wave energy is weak to moderate at best – like 54 (moderate) on Friday, but that’s with a fresh 30 km/h cross-onshore, so it’s just messy whitewater. Not worth a paddle.
Saturday the 5th gives us a bit of a bump in the afternoon – 4ft from the SSW – but the period is only 5 seconds, and it’s cross-shore with chop. Sunday the 6th sees a big jump in size, up to 8ft to 10ft, with energy in the high hundreds (882 to 1760), which is strong to very strong. But the wind is howling onshore at 25 to 30 km/h, so it’s a complete mess.
Monday the 7th is similar – 10ft of west swell, 10-second period, and onshore wind. The energy hits 2268 (very strong), but it’s just not surfable with that wind. The one clean window comes on Saturday the 12th of September – a light north-easterly cross-offshore breeze, 4ft to 5ft west swell, 10-second period, and moderate energy (348). It’s small, but clean. That’s the best of the first week.
After that, it drops off again until Thursday the 17th of September. That morning, a light northerly cross-offshore breeze (10 km/h) cleans up a 5ft west swell, 9-second period, with moderate energy (407). Water temp is about average for the time of year. This is the real standout – small but glassy, with occasional crowds possible. The swell direction is close enough to the optimum SW, so it should wrap in nice. For beginners, anything over 5ft is getting big, and we’ve got days up to 10ft, which is expert territory – and with the wind, it’s not even enjoyable. Kite surfers might fancy those big onshore days on Sunday the 6th and Monday the 7th more than paddle surfers.
So, bottom line: nothing until the 12th, and even then it’s small. The main event is Thursday the 17th morning – clean, light wind, small but fun. Mark it down, but don’t expect much else.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Sat morning. Very mild (max 19°C on Sun morning, min 13°C on Fri night). Winds decreasing (fresh winds from the W on Fri morning, light winds from the SW by Fri night). | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Mon afternoon. Very mild (max 18°C on Wed night, min 13°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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 14 | SW 14 | SW 14 | SSW 14 | SSW 5 | SSW 6 | SSW 8 | WSW 10 | WSW 13 | W 10 | W 9 | WNW 10 | SW 12 | SW 11 | SW 11 | SW 11 | SW 6 | WSW 8 | WSW 9 | W 9 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 54 | 53 | 51 | 36 | 100 | 215 | 1068 | 1814 | 3008 | 1869 | 1308 | 3050 | 5 | 5 | 5 | 4 | 350 | 766 | 885 | 971 | 641 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on |
High Tide | 10:15AM2.79m | 10:54PM2.65m | 11:34AM2.66m | 00:27AM2.56m | 1:06PM2.70m | 1:58AM2.68m | 2:25PM2.91m | 3:08AM2.93m | 3:25PM3.19m | 4:01AM3.19m | 4:14PM3.44m | 4:46AM3.40m | 4:58PM3.63m | ||||||||
Low Tide | 4:19PM0.92m | 4:56AM1.04m | 5:53PM1.03m | 6:37AM1.11m | 7:35PM0.91m | 8:07AM0.97m | 8:49PM0.64m | 9:11AM0.72m | 9:43PM0.34m | 10:00AM0.48m | 10:28PM0.10m | 10:43AM0.28m | 11:08PM-0.06m | ||||||||
 |  |  |  | |  |  | | | | |  | | | | |  | |  | | | |
 | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:03 | — | — | 7:05 | — | — |
 | — | 8:22 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:12 | — | — | 8:09 | — | — | 8:07 | — |
mm | — | — | — | 1 | 2 | — | 1 | 2 | — | — | 9 | 1 | 2 | 1 | — | 1 | 7 | 1 | — | — | — |
Temp °C | 16 | 16 | 14 | 13 | 15 | 18 | 19 | 19 | 16 | 16 | 14 | 14 | 15 | 15 | 15 | 15 | 17 | 18 | 16 | 16 | 14 |
Feels °C | 10 | 10 | 11 | 11 | 14 | 16 | 16 | 16 | 13 | 11 | 9 | 8 | 9 | 9 | 10 | 11 | 17 | 17 | 14 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | WNW 12 | WNW 10 | WNW 10 | NW 9 | NW 8 | SW 12 | WSW 13 | — | SW 12 | — | SW 12 | SW 11 | NW 11 | NW 10 | NW 9 | NNW 8 | NW 8 | N 7 | W 9 |
| kJ | 54 | 53 | 3257 | 1360 | 506 | 176 | 18 | 38 | 3008 | — | 6 | — | 5 | 5 | 3210 | 1351 | 433 | 80 | 99 | 4 | 641 |
Swell 2 Height (m) Direction Period (s) | N 10 | — | SW 14 | SSW 14 | N 8 | WSW 8 | NNW 8 | NNW 9 | — | — | — | — | — | — | SW 11 | SW 11 | W 13 | NW 8 | N 8 | — | N 7 |
| kJ | 7 | — | 51 | 36 | 35 | 81 | 13 | 8 | — | — | — | — | — | — | 5 | 4 | 3 | 35 | 4 | — | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SSW 13 | SSW 13 | — | W 18 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 17 | 17 | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 12 | WNW 12 | — | — | SSW 5 | SSW 6 | SSW 8 | WSW 10 | — | W 10 | W 9 | WNW 10 | WNW 11 | NW 12 | — | — | SW 6 | WSW 8 | WSW 9 | W 9 | — |
| kJ | 5561 | 5506 | — | — | 100 | 215 | 1068 | 1814 | — | 1869 | 1308 | 3050 | 3745 | 4834 | — | — | 350 | 766 | 885 | 971 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 142 | 486 | 567 | 13 | 8 | 8 | 8 | 387 | 383 | 142 | 142 | 408 | 142 | 567 | 567 | 486 | 13 | 244 | 13 | 142 | 567 |
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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