Downhill Surf Break

Lat Long: 55.17° N 6.84° W

Downhill Surf Forecast and Surf Report

Issued: 12 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Downhill sea temperature is
15.3°C
1.6° 

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


Downhill surf forecast from 20 Sep 2026:

  • Best quality surf: Friday 25 Sep, 4PM (local time) - 5ft (1.6m), 16s period, NW swell with cross-offshore winds.
  • Most powerful swell: Friday 25 Sep, 10AM (local time) - 6ft (1.9m), 16s period, NW swell with 1,803 kJ wave energy.
  • Next surfable swell (1★+): Sunday 20 Sep, 10PM (local time) - 5ft (1.5m), 12s period with NW swell.

Best Forecast Surf Conditions for Downhill this week:

The surf forecast for Downhill over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 20) at 10PM. The primary swell is predicted to be 1.5m and 12s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Downhill in the next 16 days are 1.9m 16s and forecast to arrive on Friday (Sep 25) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Thursday (Sep 24) at 1PM.

Wave TypeTime (BST) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sun 20th Sep)5ft (1.5m) 12s
Best Surf 4PM (Fri 25th Sep)5ft (1.6m) 16s
Most Powerful10AM (Fri 25th Sep)6ft (1.9m) 16s

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


Short Range Forecast

Light rain (total 6mm), mostly falling on Sun night. Warm (max 22°C on Mon afternoon, min 12°C on Sat night). Winds decreasing (fresh winds from the W on Sat night, light winds from the NW by Tue afternoon).

Days 4-6 Weather Summary

Moderate rain (total 16mm), heaviest on Tue night. Very mild (max 16°C on Thu afternoon, min 9°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the SSE by Thu morning).

Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Saturday
26
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
1
2
0
1
1
0
1
1
0
2
1
0
0
3
3
2
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.4
NW
12
1.8
NW
11
1.4
NW
13
1
NW
12
0.9
NW
11
0.7
NW
11
0.8
WNW
11
0.3
NW
18
1.1
NW
14
1.1
NW
13
1.1
NW
12
1.1
NW
11
1
NW
13
0.8
NW
13
0.7
NW
12
1.9
NW
16
1.6
NW
16
1.2
NW
14
0.9
WNW
12
0.9
WNW
11
0.7
WNW
10
Wave Graph
Metric surfscale
Energy kJ
1470
729
653
268
176
115
135
58
514
437
373
304
330
228
147
1803
1224
532
243
207
90
Wind (km/h)
30
W
20
W
20
SSE
15
SSW
15
SW
15
S
10
SSW
10
NNW
10
NNW
10
WNW
15
NW
15
SSE
35
SSE
35
SSE
20
S
20
SSE
5
SSW
15
S
15
SSE
10
S
20
SSE
Wind State
cross-on
cross-on
cross-off
cross-off
cross
cross-off
cross-off
cross-on
cross-on
cross-on
on
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
High Tide
3:22PM1.42m
3:58AM1.31m
4:26PM1.59m
4:41AM1.45m
5:01PM1.76m
5:12AM1.60m
5:30PM1.93m
5:40AM1.74m
5:58PM2.09m
6:09AM1.88m
6:25PM2.22m
6:39AM1.99m
6:55PM2.32m
Low Tide
8:03AM0.93m
9:51PM0.90m
9:46AM0.80m
10:48PM0.74m
10:38AM0.62m
11:23PM0.56m
11:14AM0.44m
11:52PM0.39m
11:44AM0.28m
00:19AM0.24m
12:13PM0.14m
00:46AM0.12m
12:43PM0.05m
1:14AM0.04m
clear
part cloud
light rain
clear
clear
clear
light rain
light rain
heavy rain
clear
clear
part cloud
part cloud
cloud
part cloud
rain showers
rain showers
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:07
7:09
7:11
7:13
7:15
7:16
7:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:31
7:30
7:27
7:24
7:22
7:19
7:16
 mm
2
1
3
12
2
2
Temp °C
14
14
14
20
22
19
15
12
12
13
13
11
14
16
15
15
13
12
15
17
12
Feels °C
9
10
12
18
21
18
13
10
10
8
9
10
7
10
11
12
11
9
13
15
9
  • 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 Downhill Surf forecast

The above surf forecast table for Downhill provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Downhill can be found by selecting the local surf guide option on the grey menu. Our Downhill 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 (Downhill) 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 Downhill 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 Downhill, camping, hotels and holiday cottages in Londonderry, consider staying in Coleraine which is 11 km (7 miles) away. Other places in and around Londonderry where you can find information about places to rent, and car hire include Derry which is 36 km (22 miles) away, Londonderry County Borough, Ballycastle and Derry.

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