Annascaul Rivermouth Surf Break

Lat Long: 52.13° N 10.05° W

Annascaul Rivermouth Surf Forecast and Surf Report

Issued: 12 am 15 Sep 2026 (local time)

Forecast update in  hr  min

Today's Annascaul Rivermouth sea temperature is
16.5°C
1.3° 

Annascaul Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Annascaul Rivermouth surf forecast from 15 Sep 2026:

  • Most powerful swell: Friday 18 Sep, 10PM (local time) - 11ft (3.5m), 11s period, WNW swell with 2,938 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 3.5m 11s and forecast to arrive on Friday (Sep 18) at 10PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.5m 14s period and expected on Thursday (Sep 17) at 7PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful10PM (Fri 18th Sep)11ft (3.5m) 11s

Table - best surf conditions forecast for Annascaul Rivermouth over the next 16 days.


The Lowdown

Alright, let’s break down Annascaul Rivermouth. Honestly, the next week or so is gonna be a grind. The swell and wind just aren’t playing nice together.

Monday the 14th kicks off with a small 3ft WSW swell, but the wind is cross-on and the water’s a touch warmer than normal at 62°, about a degree and a half above average. It builds through the day with rain and onshore wind, so it’s a no-go.

Tuesday the 15th brings some size: 8ft to 10ft W swells, but the wind is ripping from the NW at 19 mph, putting a nasty cross-chop on it. The energy is strong, hitting 1386 in the afternoon, but it’s blown out. This is more of a kite-surfing day than a paddle day.

Wednesday the 16th through Friday the 18th is flat. Nothing. Friday morning sees a tiny 0.3ft SW groundswell with a very long 18-second period, but there’s barely any energy (12 on the scale) and it’s onshore. Not worth it.

Saturday the 19th picks up again with a 7ft W swell, but the wind is onshore again. The energy is solid at 768, but the quality is poor.

Things start to look a little better around Monday the 21st. A 4ft to 5ft WSW swell with light cross-on winds. It’s not great, but it’s rideable if you’re keen. The energy is moderate (172 to 353).

Tuesday the 22nd is where we get a real window. The morning has a 5ft WSW groundswell with a 10-second period and light cross-shore winds. Then Tuesday afternoon goes glassy. Zero wind from the east. The swell drops to 4ft, but it’s clean. That’s your first decent chance for a surf, even if the waves are ordinary.

Wednesday the 23rd is a bit of a letdown again, with a small 4ft swell and light cross-shore winds in the morning. The afternoon does see a jump to 6ft W swell with a 10-second period and light onshore wind, but it’s marginal at best.

Friday the 25th is the standout. The morning is glassy with a 4ft WSW swell. But it’s the afternoon that’s the real gem. Glassy conditions, light offshore from the NW, and a 5ft WSW swell. The combined energy is 467, and the forecast says good surf. This is the session to aim for. Clean, manageable, and the wind is perfect.

After that, Saturday the 26th drops right back off to small weak 2ft waves with glassy conditions in the morning and a light cross-offshore in the afternoon. Not worth it.

Then we look to Tuesday the 29th. This is a big one, but it’s a long way off. A 6ft W groundswell with a very long 14-second period. The combined energy is huge at 1187. The wind is light and cross-offshore from the SE in the morning, so it’ll be clean. This has the potential to be excellent, but keep in mind that long-period swell can be a bit straight at a rivermouth. Still, the forecast is very good. Just don’t count on it too hard this far out.

So, bottom line: the best bet this period is Friday the 25th afternoon. Clean, glassy, and a solid 5ft swell. That’s the one to pencil in. Tuesday the 29th is the long-range one to watch, but it’s a gamble.

Rusty.

Short Range Forecast

Light rain (total 7mm), mostly falling on Wed night. Very mild (max 16°C on Mon night, min 13°C on Wed morning). Mainly fresh winds.

Days 4-6 Weather Summary

Moderate rain (total 13mm), heaviest on Fri morning. Very mild (max 19°C on Sun morning, min 13°C on Thu night). Wind will be generally light.

Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
2
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
W
9
3
W
9
3
W
11
2.5
WNW
10
1.1
WSW
5
3
W
9
4
WNW
11
5
WNW
13
5
WNW
14
0.1
SW
18
0.1
SW
18
3.5
W
11
2.4
WSW
10
2.2
WSW
10
1.4
WSW
10
0.2
SSW
14
0.1
SW
14
0.2
SSW
13
2.5
W
11
1.7
W
10
1.9
W
10
Wave Graph
Metric surfscale
Energy kJ
977
1374
2221
0
66
1345
0
0
0
12
12
2573
1086
878
363
20
8
17
1547
561
740
Wind (km/h)
25
WNW
25
NW
25
NW
15
W
25
WSW
25
W
35
WNW
35
WNW
15
W
25
SSW
20
SW
15
SW
15
WSW
15
W
10
SSW
10
S
15
SW
10
S
10
S
15
SSW
10
SSE
Wind State
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
on
cross-on
cross-on
on
cross-on
High Tide
7:47AM3.26m
8:03PM3.15m
8:22AM3.04m
8:41PM2.88m
9:00AM2.79m
9:25PM2.60m
9:47AM2.56m
10:24PM2.36m
10:55AM2.37m
11:51PM2.22m
12:30PM2.33m
1:29AM2.28m
1:54PM2.47m
2:37AM2.46m
Low Tide
1:43PM0.43m
2:00AM0.53m
2:20PM0.66m
2:36AM0.81m
3:00PM0.91m
3:17AM1.09m
3:52PM1.16m
4:17AM1.33m
5:19PM1.33m
6:02AM1.44m
7:15PM1.30m
7:44AM1.35m
8:26PM1.10m
rain showers
rain showers
part cloud
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
light rain
light rain
mod rain
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:13
7:15
7:16
7:18
7:20
7:20
7:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:55
7:53
7:51
7:49
7:46
7:44
7:42
 mm
1
1
4
4
3
6
Temp °C
15
15
14
15
16
15
14
15
14
14
16
16
16
16
15
19
19
17
18
18
16
Feels °C
11
10
9
13
12
12
7
9
9
11
14
15
15
14
14
18
18
16
16
17
15
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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