Skip to content
✨ New: PhotoWeather is now available on iOS and Android
Rule Mirror Lake

Beddgelert - Mirror Lake - Snowdonia (Eryri)

Beddgelert, Wales, United Kingdom

Perfectly calm water for flawless reflections

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London
mirror-lake weather icon
Next opportunity
Perfect Mirror Reflections at Sunset
Beddgelert
Sat, Apr 18 · 19:00–21:00 · 2h window
Low confidence
34%
💨Wind Speed0.8-0.9m/s
mirror-lake weather icon
Glassy Mirror Reflections (glassy)
Beddgelert
Sat, Apr 18 · 21:00–23:00
💨Wind Speed:0.5-0.6m/s
Medium

What this forecast looks for

Plain-language explanation from the rule

This forecast identifies when calm conditions and clear skies align for perfect mirror reflections on Snowdonia's mountain lakes. We track wind speed, cloud cover, and atmospheric stability to predict when Llyn Padarn, Llyn Ogwen, and other tarns become mirror-still.

Snowdonia's glacial lakes—scoured by Ice Age glaciers into deep mountain-flanked basins—create some of Wales's most iconic reflection photography. Llyn Padarn reflects the Snowdon massif and historic Dolbadarn Castle, Llyn Ogwen mirrors Tryfan's distinctive rocky profile, and smaller tarns throughout the national park offer intimate reflection compositions with dramatic mountain backdrops.

What makes Snowdonia reflection photography distinctive:

  • Snowdon massif - Llyn Padarn and Llyn Gwynant reflect Wales's highest peaks with morning alpenglow
  • Tryfan's profile - Llyn Ogwen mirrors the distinctive rocky north face and three prominent buttresses
  • Historic elements - Dolbadarn Castle tower reflected in Llyn Padarn adds medieval narrative
  • Glacial tarns - Cwm Idwal and mountain pools create intimate reflection compositions in cirques

The most reliable reflection conditions occur during settled high-pressure periods, particularly in autumn (September-November) when winds are calmer than spring and summer. Dawn offers the best chance of mirror-calm before valley winds develop—Llyn Padarn is typically stillest in the hour after sunrise. The lake's eastern orientation means morning light illuminates the Snowdon massif beautifully while water remains calm. Llyn Ogwen requires careful timing—its exposed position means wind-free mornings are precious. Position yourself at the eastern end near the Ogwen Cottage climbing hut to capture Tryfan's full profile reflected in calm water. Capel Curig's smaller pools offer intimate reflection opportunities with less exposure to wind. Nant Gwynant valley's Llyn Gwynant reflects surrounding peaks with particularly calm conditions in its sheltered upper reaches. Winter and spring mornings occasionally deliver snow-covered peaks reflected in dark water—one of Snowdonia's signature compositions.

Create your own Mirror Lake alerts

Get notified when these conditions match at your own locations.

Get this template

72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 92 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Wind Speed
≤ 1.0m/s
Wind Gusts
≤ 2.0m/s
Precipitation Chance
≤ 10.0%
Visibility
≥ 5000.0m
Tue, Apr 14
06:001.9m/s1.6m/s59%24134m
07:002.2m/s1.8m/s69%24135m
08:002.2m/s2.5m/s77%24135m
09:002.3m/s2.7m/s82%24134m
10:002.4m/s3.3m/s88%24120m
11:002.3m/s2.9m/s92%24134m
12:002.5m/s3.2m/s95%24129m
13:002.5m/s3m/s99%24135m
14:002.6m/s3.4m/s85%16041m
15:002.3m/s2.8m/s70%24134m
16:002m/s2.9m/s56%24134m
17:002.1m/s3.7m/s65%24134m
18:002.3m/s3.7m/s75%24134m
19:002.2m/s3.2m/s85%6729m
20:002.4m/s3.3m/s98%7060m
21:002.6m/s3.6m/s97%24134m
22:002.7m/s3.8m/s96%24072m
23:002.7m/s3.5m/s97%24059m
Wed, Apr 15
24:002.8m/s4m/s98%20376m
01:002.8m/s4.5m/s99%4707m
02:003.4m/s8.8m/s93%1333m
03:004.2m/s13m/s85%410m
04:004.1m/s12m/s78%236m
05:003.7m/s11m/s85%276m
06:004.3m/s12m/s92%613m
07:005m/s12m/s99%2399m
08:005.2m/s14m/s96%23941m
09:005.5m/s14m/s93%24135m
10:006.5m/s15m/s90%13403m
11:005.8m/s15m/s93%8109m
12:005.3m/s12m/s95%458m
13:005.5m/s11m/s98%886m
14:005.8m/s12m/s85%216m
15:006.2m/s12m/s72%1661m
16:008.7m/s14m/s60%19572m
17:0010m/s16m/s72%15844m
18:0010m/s17m/s83%14643m
19:0010m/s16m/s95%22809m
20:0011m/s17m/s91%23057m
21:0010m/s17m/s87%24134m
22:009.7m/s17m/s82%2941m
23:0012m/s18m/s87%22899m
Thu, Apr 16
24:0012m/s18m/s91%23060m
01:0011m/s17m/s95%22976m
02:0010m/s17m/s85%23014m
03:0010m/s17m/s74%15284m
04:009.6m/s16m/s64%19949m
05:009.2m/s15m/s73%23192m
06:008.9m/s15m/s82%23252m
07:007.8m/s13m/s92%23370m
08:007m/s12m/s74%23178m
09:007m/s11m/s57%23527m
10:006.5m/s10m/s39%23325m
11:006m/s9m/s39%23535m
12:006.2m/s8.8m/s39%23456m
13:006m/s8.7m/s39%23599m
14:006.1m/s8.5m/s42%23340m
15:006.2m/s8.9m/s45%24135m
16:006m/s8.9m/s49%24135m
17:005.6m/s9.4m/s54%24134m
18:004.8m/s9.3m/s59%24135m
19:004m/s9.1m/s64%24134m
20:003.1m/s8.7m/s50%24135m
21:002.5m/s4.1m/s36%24135m
22:002m/s2.3m/s22%24135m
23:002m/s2.2m/s34%24134m
Fri, Apr 17
24:002.2m/s2.9m/s45%24135m
01:002.5m/s2.4m/s56%24134m
02:002.6m/s4.3m/s67%24134m
03:003m/s7m/s77%24135m
04:003.3m/s9.7m/s88%24135m
05:003.6m/s11m/s91%24135m
06:003.4m/s8.4m/s94%24135m
07:003.5m/s9.5m/s97%24134m
08:003.3m/s9.3m/s95%21738m
09:003.7m/s9.9m/s94%13481m
10:004m/s12m/s93%20643m
11:004.2m/s11m/s94%446m
12:005.2m/s12m/s95%387m
13:006.3m/s12m/s96%22979m
14:005.8m/s11m/s78%20691m
15:005.2m/s11m/s60%18403m
16:004.7m/s10m/s42%16115m
17:003.8m/s7.5m/s47%18788m
18:003m/s4.8m/s52%21462m
19:002.1m/s2.1m/s56%24135m
20:002m/s2m/s65%24135m
21:001.8m/s1.8m/s73%24135m
22:001.7m/s1.6m/s82%24135m
23:002.1m/s3.2m/s82%24135m
Sat, Apr 18
24:002.6m/s4.8m/s82%24135m
01:003m/s6.4m/s82%24135m
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

Get Notified of Opportunities

Create your own custom alerts for this location and more.

Create Free Account