Derrynane Surf Break

Lat Long: 51.76° N 10.17° W

Derrynane 48 hour detailed Surf Forecast

Issued: 6 am 31 Jul 2026 (local time)

Forecast update in  hr  min

Today's Derrynane sea temperature is
17.3° C
1.3° 

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 (31 Jul):

  • Morning surf: Morning surf (31 Jul, local time) - 0.5ft (0.2m), 11s period with WSW swell.
  • Afternoon surf: Afternoon surf (31 Jul, local time) - 1.5ft (0.4m), 10s period with WSW swell.
  • Evening surf: Evening surf (31 Jul, local time) - 1.5ft (0.5m), 9s period with WSW swell.

The current surf forecast for Derrynane at 6PM is: 0.5m 10s primary swell from a West direction (forecast issued at 06:00am July 31). An open ocean swell of 0.8m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (IST) & DateWave HeightWave Period
Morning (31 Jul)0.5ft (0.2m)11s
Afternoon (31 Jul)1.5ft (0.4m)10s
Evening (31 Jul)1.5ft (0.5m)9s

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


Short Range Forecast

Light rain (total 2mm), mostly falling on Sun morning. Very mild (max 17°C on Sun afternoon, min 13°C on Fri night). Winds increasing (calm on Fri night, fresh winds from the SE by Sun night).

Friday
31
Saturday
1
Sunday
2
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
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
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
W
9
0.1
W
12
0.2
WSW
11
0.3
WSW
11
0.4
WSW
10
0.5
W
10
0.5
WSW
9
0.5
WSW
9
0.5
WSW
9
0.5
WSW
9
0.5
WSW
8
0.5
WSW
8
0.5
WSW
8
0.5
WSW
8
0.4
SW
8
0.4
SW
8
0.4
SW
8
0.5
SW
8
0.9
WSW
10
1.3
SW
9
1.5
SW
9
1.5
SW
9
1.6
SW
9
Wave Graph
Metric surfscale
Energy kJ
6
3
12
23
33
50
48
46
45
44
40
39
39
38
17
16
16
32
161
266
351
351
397
Wind (km/h)
20
WNW
20
W
20
W
20
W
20
WNW
15
WNW
15
WNW
10
NW
10
NW
5
NW
5
WSW
10
SW
10
WSW
5
SW
5
ESE
10
E
15
ESE
15
ESE
25
ESE
25
SE
30
SE
30
ESE
30
ESE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
glassy
glassy
on
cross-on
glassy
glassy
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
High Tide
6:37AM3.12m
6:45PM3.34m
7:10AM3.14m
7:18PM3.32m
7:44AM3.12m
7:53PM3.26m
Low Tide
12:27PM0.46m
00:51AM0.25m
12:59PM0.45m
1:23AM0.25m
1:33PM0.47m
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:31
9:30
9:28
 mm
1
1
Temp °C
15
15
16
16
16
16
15
14
14
13
14
15
15
15
15
15
15
15
15
16
17
17
17
Feels °C
11
11
12
12
12
13
12
12
12
12
13
13
14
14
14
13
13
12
11
12
12
12
12
  • 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.


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