uk es it fr pt nl
Castlerock ratings
Quality on a good day: 3.0
Consistency of Surf: 4.0
Difficulty Level: 1.0
Crowds: 4.0

Overall: 3.3

See all 18 ratings

Based on 1 vote. Vote


Surf Report Feed
Icon beach  red
Beach/jetty
Icon  s3
Castlerock location mapGet alerts  temp

Castlerock Surf Forecast / Londonderry / Ireland

12 Day Weather and Surf, issued 12 am Monday 17 May 2021 BST
Forecast update in  hr  min  s Update imminent
Castlerock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castlerock sea temperature is 10.3 °C (Statistics for 17 May 1981-2005 - mean: 10.4 max: 11.6 min: 9.2 °C)
Icon breakBreak
Icon legend buoysLive Wave Height (m)
Icon legend windLive Wind Speed (km/h)
Castlerock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castlerock sea temperature is 10.3 °C (Statistics for 17 May 1981-2005 - mean: 10.4 max: 11.6 min: 9.2 °C)

Eyeball surf reportRecent Eyeball Surf Reports for Londonderry

  1. weather stationWind Update Continuing clean conditions at Castlerock (light winds from the NNW at MagilliganNO2 11 km from Castlerock).

    Castlerock
Expand
<
>
View all

1 h 35 min ago

Light
7 km/h
NNW
Clean
Please reload the page to see if there are any updates.


Best Forecast Surf Conditions for Castlerock this week:

The surf forecast for Castlerock over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (May 18) at 1AM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.1m and 10s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Castlerock in the next 12 days are 0.9m 16s and forecast to arrive on Friday (May 21) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (May 20) at 10PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+) 1AM (Tue 18th May)2ft (0.6m) 9s
Best Surf 1PM (Fri 21st May)2.5ft (0.8m) 17s
Most Powerful 4PM (Fri 21st May)3ft (0.9m) 16s

Table - best surf conditions forecast for Castlerock over the next 12 days.

Updates in  hr  min  s Update imminent
Rating
(10 max)
Swell
Height Map
Wave Height (m) & direction (?)
Period(s) (?)
Wave
Graph
(?)Metric surfscale
Energy (?)
Wind
(km/h)
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
High Tide
/ height (m)
Low Tide
/ height (m)
Summary
Rain (mm)
High °C
Low °C
Chill °C (?)
Sunrise
Sunset
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Fri
28
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
000100000000013222000000000000345555
T unitedkingdom.htsgw.metric.6.cc23
T unitedkingdom.htsgw.metric.24.cc23
T unitedkingdom.htsgw.metric.48.cc23
T unitedkingdom.htsgw.metric.72.cc23
T unitedkingdom.htsgw.metric.96.cc23
T unitedkingdom.htsgw.metric.120.cc23
T unitedkingdom.htsgw.metric.144.cc23
T unitedkingdom.htsgw.metric.168.cc23
T unitedkingdom.htsgw.metric.192.cc23
T unitedkingdom.htsgw.metric.216.cc23
T unitedkingdom.htsgw.metric.240.cc23
T unitedkingdom.htsgw.metric.264.cc23
T unitedkingdom.htsgw.metric.288.cc23
0.2
W
0.5
NNW
0.5
NNW
0.6
NNW
0.4
NNW
0.4
NNW
0.4
NNW
0.4
NNW
0.6
N
0.3
NNW
0.5
N
0.4
NNW
0.3
NNW
0.4
WNW
0.9
WNW
0.7
WNW
0.7
WNW
0.6
WNW
0.4
WNW
0.3
WNW
0.3
WNW
0.2
W
0.1
W
0.2
WNW
0.2
WNW
0.3
WNW
0.4
WNW
0.7
WNW
0.4
WNW
0.4
WNW
0.9
WNW
1.4
WNW
1.9
NW
2.2
NW
2.1
NW
1.9
NW
119998888595771616151413121211101312111010101011141415161514
104344502625282215161318910040722821814149272484151219308843403127521506228519141512
15
NW
15
WNW
15
NW
10
SW
10
WSW
15
NNW
10
WSW
15
NW
15
N
5
N
15
SSE
30
SSE
25
SSE
25
SSE
20
SE
15
E
10
NE
10
N
10
WNW
25
NW
25
WNW
15
S
35
SSE
30
SSW
25
WSW
35
WNW
30
WNW
40
WNW
30
WNW
30
WNW
10
SW
15
SSE
15
SSE
15
SSE
5
S
10
NE
cross-
on
cross-
on
cross-
on
cross-
off
cross-
off
oncross-
off
cross-
on
onglassoffoffoffcross-
off
cross-
off
crosscross-
on
oncross-
on
cross-
on
cross-
on
offcross-
off
offcross-
off
crosscross-
on
crosscrosscrosscross-
off
offcross-
off
offoffcross-
on
9:46AM
1.27
10:33PM
1.38
10:35AM
1.18
11:40PM
1.32
11:51AM
1.11
1:05AM
1.33
1:33PM
1.10
2:23AM
1.43
2:58PM
1.18
3:25AM
1.57
3:59PM
1.31
4:16AM
1.71
4:48PM
1.45
5:03AM
1.84
5:33PM
1.59
5:49AM
1.91
6:15PM
1.72
6:34AM
1.92
6:58PM
1.81
7:19AM
1.86
7:41PM
1.85
8:04AM
1.74
3:56AM
0.54
3:58PM
0.44
4:49AM
0.64
4:52PM
0.52
6:09AM
0.69
6:07PM
0.57
7:47AM
0.65
7:35PM
0.56
9:04AM
0.52
8:50PM
0.48
10:00AM
0.36
9:50PM
0.36
10:46AM
0.21
10:42PM
0.23
11:29AM
0.08
11:31PM
0.11
12:10PM
0.01
12:19AM
0.02
12:50PM
-0.02
1:06AM
-0.01
1:30PM
0.01
1:55AM
0.01
2:11PM
0.07

Note: the tide data above is for Portstewart which is 4 km away. Surf properties and timing are calculated for Castlerock.New forecast is published every 6 hours at www.surf-forecast.com. See detailed tide info and graph
Offshore winds at Castlerock blow from the S

Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Fri
28
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
partially cloudy
cloudy
partially cloudy
clear
rain showers
rain showers
partially cloudy
clear
clear
partially cloudy
cloudy
cloudy
partially cloudy
light rain
rain showers
light rain
moderate rain
light rain
light rain
partially cloudy
partially cloudy
light rain
rain showers
rain showers
light rain
rain showers
rain showers
light rain
light rain
partially cloudy
rain showers
light rain
light rain
light rain
partially cloudy
partially cloudy
some cloudscloudysome cloudsclearrain shwrsrain shwrssome cloudsclearclearsome cloudscloudycloudysome cloudslight rainrain shwrslight rainmod. rainlight rainlight rainsome cloudssome cloudslight rainrain shwrsrain shwrslight rainrain shwrsrain shwrslight rainlight rainsome cloudsrain shwrslight rainlight rainlight rainsome cloudssome clouds
----12-------214641--16242231-1212--
91111911109109713111211121010101011121012121010119101110911111314
810116910798610101010121010101010118911991099109910111114
799710888651181091098988989967857887991313
-5:15--5:13--5:11--5:09--5:09--5:07--5:05--5:03--5:03--5:01--5:00--4:58-
--9:31--9:34--9:35--9:37--9:38--9:39--9:42--9:44--9:45--9:46--9:47--9:50

Short Range Forecast: Light rain (total 3mm), mostly falling on Tue morning. Very mild (max 11°C on Mon morning, min 6°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 17mm), heaviest on Fri night. Very mild (max 13°C on Thu morning, min 6°C on Wed night). Winds increasing (calm on Wed night, fresh winds from the SSE by Thu afternoon).

Days 6-9 Weather Summary Moderate rain (total 18mm), heaviest on Mon morning. Very mild (max 12°C on Sun afternoon, min 8°C on Sun night). Winds increasing (light winds from the WNW on Sat night, fresh winds from the WNW by Tue afternoon).

Long Range Forecast: Moderate rain (total 10mm), heaviest on Tue night. Very mild (max 14°C on Fri afternoon, min 9°C on Tue night). Winds decreasing (strong winds from the WNW on Tue night, light winds from the S by Fri morning).

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 Castlerock 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.


Information about the Castlerock Surf forecast

The above surf forecast table for Castlerock provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Castlerock can be found by selecting the local surf guide option on the grey menu. Our Castlerock 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 (Castlerock) 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 Castlerock 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 Londonderry? If you are looking for accommodation near Castlerock, camping, hotels and holiday cottages in Londonderry, consider staying in Coleraine which is 8 km (5 miles) away. Other places in and around Londonderry where you can find information about places to rent, and car hire include Ballycastle which is 34 km (21 miles) away, Ballypatrick, Londonderry County Borough and Derry.