Tronoen Surf Break

Lat Long: 47.85° N 4.35° W

Tronoen Surf Forecast and Surf Report

Issued: 7 am 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Tronoen sea temperature is
18.2° C
0.3° 

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


Tronoen surf forecast from 18 Aug 2026:

  • Best quality surf: Tuesday 25 Aug, 8AM (local time) - 6ft (1.9m), 10s period, W swell with glassy winds.
  • Most powerful swell: Thursday 20 Aug, 2PM (local time) - 7ft (2.2m), 9s period, WNW swell with 816 kJ wave energy.
  • Next surfable swell (1★+): Saturday 22 Aug, 5AM (local time) - 4.5ft (1.3m), 8s period with WNW swell.

Best Forecast Surf Conditions for Tronoen this week:

The surf forecast for Tronoen over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 22) at 5AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.1m and 15s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Tronoen in the next 16 days are 2.2m 9s and forecast to arrive on Thursday (Aug 20) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Aug 23) at 5AM.

Wave TypeTime (CEST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sat 22nd Aug)4.5ft (1.3m) 8s
Best Surf 8AM (Tue 25th Aug)6ft (1.9m) 10s
Most Powerful 2PM (Thu 20th Aug)7ft (2.2m) 9s

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


The Lowdown

Hey gang, Rusty checking in. Let’s be honest, the first few days are a bit of a dud.

Starting on Tuesday the 18th, we’re stuck with weak, short-period swell and messy cross-onshore winds. By Wednesday it gets worse with onshore winds. We get a bit more juice in the water by late Wednesday into Thursday, but it stays choppy and blown out. The combined swell energy climbs into the moderate range, hitting 668 on Thursday morning and 815 on Thursday afternoon, but with moderate cross-onshore winds, the waves are just a mess.

Friday the 21st looks clean from above but the wind is still cross-onshore for a 1.6m WNW swell. The first sign of hope comes Saturday morning the 22nd. The wind goes offshore from the northeast at 9 mph, the waves clean up. We get a 1.0m NW swell at 7 seconds. The combined energy is only 166, so it’s small, but the clean conditions make it worth a paddle. Get in there early, because the afternoon turns.

Sunday the 23rd starts with offshore NE winds again and goes light and clean in the afternoon, but it’s a 1.2m NW swell at a super short 5 seconds. It will be weak.

After a quiet Monday, the energy starts stepping up. Tuesday morning the 25th brings a 2.0m W swell at 9 seconds, combined energy hitting 687, and a south cross-shore wind at 9 mph. Not perfect but ridable. Then comes the big one. Thursday morning the 27th: combined energy blasts to 1562, with a 3.0m swell from the west at 9 seconds. The catch? The forecast says it’s too big for this break. That is expert-only territory. It will be heavy, dangerous, and for the brave only.

Looking into the long range, the clear winner is Saturday the 29th. The wind drops to glassy in the morning, zero from the southeast. Swell is 1.2m from the WSW at 8 seconds with 290 combined energy. It’s noted as “expect good surf conditions.” Mark it on the calendar even if it’s over a week away.

The very end of the window on Wednesday the 2nd of September shows a 2.4m SW swell with a 7-second period, but cross-shore winds and marginal conditions keep it from being the main event.

Bottom line: some clean small surf this weekend, a massive expert-only swell on the 27th, and a killer glassy dawn on August 29th for the best waves of the outlook.

Keep your head on a swivel out there.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Wed afternoon. Warm (max 20°C on Tue afternoon, min 17°C on Tue morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Sat afternoon. Warm (max 22°C on Sun afternoon, min 14°C on Fri night). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
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
1
0
0
1
1
0
0
1
1
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)
0.7
WNW
6
0.4
W
8
0.9
NW
6
0.6
WNW
10
1.4
NW
10
1.6
WNW
10
2.1
WNW
9
2.1
WNW
10
2
WNW
10
1.6
WNW
10
1.5
WNW
9
1.3
WNW
8
1
NW
7
0.8
NW
7
1
NNW
7
0.8
NW
6
1.2
NW
5
0.6
NW
5
0.3
W
9
0.3
W
9
0.9
W
6
Wave Graph
Metric surfscale
Energy kJ
35
20
59
64
433
502
660
799
701
472
352
237
91
57
88
46
76
19
14
14
55
Wind (km/h)
15
W
20
W
15
WNW
25
WSW
25
NW
25
W
25
WNW
25
WNW
15
WNW
15
NW
20
WNW
15
NE
15
NE
15
NE
25
NNE
25
NE
10
N
20
NNE
10
NE
25
WNW
10
WNW
Wind State
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-off
off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-on
cross-on
High Tide
8:54AM3.59m
9:12PM3.50m
9:31AM3.32m
9:52PM3.15m
10:15AM3.05m
10:44PM2.85m
11:21AM2.83m
00:16AM2.65m
1:16PM2.76m
2:17AM2.70m
2:48PM2.93m
3:22AM2.92m
3:40PM3.19m
4:03AM3.16m
Low Tide
3:11PM0.73m
3:33AM0.91m
3:56PM1.06m
4:20AM1.23m
4:53PM1.36m
5:22AM1.50m
6:10PM1.55m
6:45AM1.61m
7:39PM1.55m
8:08AM1.53m
8:52PM1.37m
9:11AM1.30m
9:43PM1.11m
clear
part cloud
part cloud
light rain
rain showers
clear
rain showers
part cloud
part cloud
clear
clear
clear
clear
thunderstorm
rain showers
part cloud
part cloud
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:15
7:16
7:18
7:18
7:20
7:22
7:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
9:25
9:23
9:22
9:20
9:17
9:15
9:14
 mm
1
4
1
3
1
Temp °C
18
20
20
20
19
18
18
19
18
17
18
18
17
20
20
19
22
22
17
19
20
Feels °C
17
19
20
18
16
14
14
15
15
15
15
15
14
17
15
14
19
16
16
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)
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Information about the Tronoen Surf forecast

The above surf forecast table for Tronoen provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Tronoen can be found by selecting the local surf guide option on the grey menu. Our Tronoen 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 (Tronoen) 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 Tronoen 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.

Tronoen is 13 km (8 miles) from the city of Loctudy. If you plan a holiday in Finistere - Brittany, look for hotels and other accommodation in Loctudy. Loctudy has rooms for a wide range of budgets as well as car hire and transport links.

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