Derrynane Surf Break

Lat Long: 51.76° N 10.17° W

Derrynane 48 hour detailed Surf Forecast

Issued: 12 pm 18 Sep 2026 (local time)

Forecast update in  hr  min

Today's Derrynane sea temperature is
16.3°C
1.1° 

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


How big are the waves at Derrynane today (18 Sep):

  • Morning surf: Morning surf (18 Sep, local time) - 7.5ft (2.3m), 8s period with WSW swell.
  • Afternoon surf: Afternoon surf (18 Sep, local time) - 11ft (3.5m), 12s period with W swell.
  • Evening surf: Evening surf (18 Sep, local time) - 11ft (3.5m), 11s period with W swell.

The current surf forecast for Derrynane at 5PM is: 3.5m 12s primary swell from a West direction and 0.1m 12s secondary swell from a Southwest direction, 0.1m 18s secondary swell from a Southwest direction (forecast issued at 12:00pm September 18). The wind direction is predicted to be onshore.

Time (IST) & DateWave HeightWave Period
Morning (18 Sep)7.5ft (2.3m)8s
Afternoon (18 Sep)11ft (3.5m)12s
Evening (18 Sep)11ft (3.5m)11s

Table - waves today at Derrynane. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 5mm), mostly falling on Fri morning. Very mild (max 18°C on Sun night, min 13°C on Sat night). Winds decreasing (fresh winds from the WSW on Fri morning, calm by Sat night).

Fri
18
Saturday
19
Sunday
20
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
WSW
8
3.5
W
12
3.5
W
12
3.5
W
11
3.5
W
11
3.5
W
11
3
W
11
3
W
11
3
W
11
3
W
11
0.2
SSW
15
0.2
SSW
15
0.2
SSW
14
0.2
SSW
14
0.2
SSW
14
0.2
SSW
14
0.2
SSW
14
0.2
SSW
14
0.2
SSW
14
0.2
SSW
14
0.2
SSW
13
Wave Graph
Metric surfscale
Energy kJ
620
3283
3103
2678
2633
2593
2248
2067
1890
1760
23
21
20
20
21
21
20
20
20
18
18
Wind (km/h)
35
SW
40
WSW
40
WSW
35
WSW
35
WSW
35
WSW
30
W
30
W
25
W
20
W
25
W
20
WNW
20
WNW
15
NW
10
NW
5
N
5
E
15
SSE
20
SSE
20
SE
15
SE
Wind State
on
on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
glassy
glassy
cross
cross
cross
cross
High Tide
9:45AM2.55m
10:21PM2.36m
10:53AM2.37m
11:48PM2.22m
12:27PM2.33m
Low Tide
3:51PM1.17m
4:15AM1.34m
5:18PM1.34m
6:00AM1.45m
7:13PM1.30m
light rain
cloud
cloud
cloud
cloud
light rain
rain showers
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:18
7:20
7:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:49
7:46
7:45
 mm
3
1
1
Temp °C
15
17
16
16
16
16
16
16
15
15
15
14
14
14
13
13
13
14
15
15
17
Feels °C
9
11
10
11
11
11
12
12
11
11
11
11
11
12
11
12
12
11
11
12
16
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Derrynane surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Nearest locationNearest