Ballymastocker Surf Break

Lat Long: 55.19° N 7.60° W

Ballymastocker Surf Forecast and Surf Report

Issued: 12 pm 16 Sep 2026 (local time)

Forecast update in  hr  min

Today's Ballymastocker sea temperature is
15.5°C
1.9° 

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


Ballymastocker surf forecast from 16 Sep 2026:

  • Most powerful swell: Thursday 17 Sep, 1AM (local time) - 1.5ft (0.4m), 9s period, NNW swell with 25 kJ wave energy.

Best Forecast Surf Conditions for Ballymastocker this week:

The most powerful waves expected at Ballymastocker in the next 16 days are 0.4m 9s and forecast to arrive on Thursday (Sep 17) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 5.0m 14s period and expected on Thursday (Sep 17) at 4PM.

Wave TypeTime (IST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 1AM (Thu 17th Sep)1.5ft (0.4m) 9s

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


Short Range Forecast

Light rain (total 8mm), mostly falling on Wed night. Very mild (max 16°C on Fri afternoon, min 12°C on Wed night). Winds decreasing (strong winds from the W on Thu morning, moderate winds from the S by Fri morning).

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Mon morning, min 12°C on Sat night). Winds decreasing (fresh winds from the WSW on Sat morning, calm by Mon night).

Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
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
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
Wave
Height (m)
Direction
Period (s)
0.3
N
9
0.2
N
9
0.4
NNW
9
0.2
N
8
5
NW
14
4.5
NW
14
3.5
NW
13
3
WNW
12
2.5
WNW
11
3
WNW
10
3
WNW
11
3.5
WNW
12
2.5
WNW
12
2.4
NW
12
2.2
WNW
12
1.8
WNW
11
1.5
WNW
10
1.4
WNW
10
1.3
WNW
17
2.2
WNW
16
1.9
WNW
14
Wave Graph
Metric surfscale
Energy kJ
15
6
25
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Wind (km/h)
20
W
25
SW
30
W
40
W
45
W
35
W
20
S
40
WSW
30
WSW
35
WSW
35
WSW
35
W
25
W
10
SW
15
S
10
SW
15
WSW
5
SE
5
SSW
10
NW
5
E
Wind State
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
off
cross-off
cross-off
glassy
cross
glassy
High Tide
10:00PM2.73m
10:18AM2.67m
10:38PM2.44m
11:03AM2.43m
11:32PM2.17m
12:21PM2.22m
1:21AM2.01m
2:32PM2.20m
3:23AM2.09m
3:56PM2.40m
4:23AM2.29m
4:43PM2.65m
Low Tide
3:49PM0.63m
4:04AM0.80m
4:29PM0.93m
4:44AM1.07m
5:23PM1.22m
5:44AM1.31m
7:01PM1.41m
7:38AM1.40m
9:09PM1.35m
9:23AM1.26m
10:17PM1.13m
10:19AM1.01m
10:57PM0.87m
part cloud
part cloud
rain showers
rain showers
clear
part cloud
light rain
light rain
rain showers
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:03
7:05
7:07
7:07
7:09
7:11
7:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:45
7:43
7:40
7:37
7:35
7:32
7:30
 mm
3
1
1
1
2
Temp °C
14
15
15
13
13
13
13
16
16
14
14
13
13
12
16
20
20
18
19
18
16
Feels °C
9
9
9
5
4
6
8
10
11
7
7
6
8
9
15
19
18
19
18
17
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
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Information about the Ballymastocker Surf forecast

The above surf forecast table for Ballymastocker provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ballymastocker can be found by selecting the local surf guide option on the grey menu. Our Ballymastocker 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 (Ballymastocker) 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 Ballymastocker 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 Donegal? If you are looking for accommodation near Ballymastocker, camping, hotels and holiday cottages in Donegal, consider staying in Derry which is 27 km (17 miles) away. Other places in and around Donegal where you can find information about places to rent, and car hire include Malin Head which is 27 km (17 miles) away, Derry, Londonderry County Borough and Letterkenny.

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