Castletown Surf Break

Lat Long: 54.07° N 4.65° W

Castletown 48 hour detailed Surf Forecast

Issued: 12 am 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Castletown sea temperature is
16.1° C
0.8° 

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


How big are the waves at Castletown today (17 Aug):

  • Morning surf: Morning surf (17 Aug, local time) - 1ft (0.3m), 4s period with SSW swell.
  • Afternoon surf: Afternoon surf (17 Aug, local time) - 1ft (0.3m), 4s period with SW swell.
  • Evening surf: Evening surf (17 Aug, local time) - 2.5ft (0.7m), 4s period with SW swell.

The current surf forecast for Castletown at 8AM is: 0.3m 4s primary swell from a South-southwest direction (forecast issued at 12:00am August 17). The wind direction is predicted to be cross-offshore.

Time (BST) & DateWave HeightWave Period
Morning (17 Aug)1ft (0.3m)4s
Afternoon (17 Aug)1ft (0.3m)4s
Evening (17 Aug)2.5ft (0.7m)4s

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


Short Range Forecast

Moderate rain (total 13mm), heaviest on Mon night. Very mild (max 17°C on Mon night, min 13°C on Tue night). Winds increasing (light winds from the W on Sun night, fresh winds from the WSW by Wed morning).

Monday
17
Tuesday
18
Wednesday
19
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
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
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)
0.4
SSW
4
0.3
SSW
4
0.3
SSW
4
0.2
SSW
4
0.2
SSW
4
0.3
SW
4
0.4
SW
3
0.7
SW
4
0.8
SW
4
0.7
SSW
4
0.5
SSW
5
0.9
W
4
0.9
WSW
4
0.8
WSW
4
0.7
WSW
4
0.7
WSW
4
0.7
WSW
4
1
W
4
1.2
WSW
5
1.5
WSW
5
1.4
SW
5
1.3
SW
5
1.2
SSW
6
1
SSW
5
Wave Graph
Metric surfscale
Energy kJ
4
3
2
1
1
2
3
13
26
18
13
27
29
22
13
15
15
38
62
116
119
89
81
61
Wind (km/h)
5
W
10
NW
10
NW
10
WNW
10
W
10
SW
15
SSW
30
SSW
30
W
25
WNW
25
W
30
W
25
W
20
WSW
20
WSW
20
W
30
W
30
W
30
WSW
35
WSW
30
SW
30
SW
20
SW
15
W
Wind State
cross
cross-off
cross-off
cross-off
cross
cross-on
on
cross-on
cross
cross-off
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
High Tide
2:48AM5.22m
3:14PM4.73m
3:29AM4.96m
3:54PM4.51m
4:11AM4.64m
4:37PM4.27m
Low Tide
9:03AM0.40m
9:14PM0.71m
9:43AM0.68m
9:56PM0.95m
10:25AM1.02m
cloud
cloud
cloud
cloud
cloud
cloud
light rain
mod rain
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
cloud
light rain
cloud
light rain
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
6:00
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:45
8:43
8:40
 mm
1
6
1
2
3
1
Temp °C
15
15
15
16
16
16
15
15
17
16
15
15
15
16
17
16
14
13
13
14
15
14
15
15
Feels °C
15
15
15
16
16
16
13
11
14
13
11
10
10
12
14
13
9
7
7
7
9
9
12
13
  • 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 Castletown 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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