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Rule Mirror Lake

Mount Aso - Mirror Lake - Kyushu

Aso, Kumamoto, Japan

Perfectly calm water for flawless reflections

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Asia/Tokyo
mirror-lake weather icon
Next opportunity
Perfect Mirror Reflections
Mount Aso
Fri, May 29 · 15:00–18:00 · 3h window
Low confidence
31%
💨Wind Speed0.8m/s
mirror-lake weather icon
Perfect Mirror Reflections at Sunset
Mount Aso
Fri, May 29 · 18:00–20:00
💨Wind Speed:0.8-0.9m/s
Low

What this forecast looks for

Plain-language explanation from the rule

This forecast predicts mirror-calm water conditions for Kyushu's volcanic crater lakes, thermal spring ponds, and castle moats. We analyze wind speed, atmospheric stability, and tidal patterns to identify when reflections double the impact of the island's distinctive volcanic landscapes.

Kyushu's volcanic activity created numerous crater lakes in Kirishima highlands and Aso region, while onsen areas feature thermal-spring-fed ponds that rarely freeze. Historic Kumamoto Castle is surrounded by water features, and coastal areas offer sheltered bays for reflection photography. The subtropical climate means humidity-driven calm morning conditions.

What makes Kyushu reflection photography special:

  • Thermal spring mirrors - Lake Kinrinko in Yufuin fed by hot springs creates year-round reflections with Mount Yufu backdrop
  • Volcanic crater lakes - Kirishima highlands contain sacred lakes surrounded by volcanic peaks and mountain shrines
  • Castle moat reflections - Kumamoto Castle's defensive waters reflect reconstructed towers and original stone walls
  • Harbor twilight - Nagasaki's natural harbor provides sheltered water for city lights and hillside reflections

Lake Kinrinko delivers Kyushu's most reliable reflection photography—the spring-fed lake produces morning steam that lifts revealing perfect mirror conditions with Mount Yufu's twin peaks reflected. Best November through March before dawn when thermal mist settles leaving glass-calm water. Kirishima region contains sacred crater lakes surrounded by autumn color—arrive early as wind picks up by mid-morning. Kumamoto Castle's moats provide architectural reflections particularly beautiful when evening illumination begins. Nagasaki harbor at blue hour offers urban reflections with hillside buildings and city lights. Winter and early spring offer most consistent calm conditions.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 80 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Asia/Tokyo
Wind Speed
≤ 1.0m/s
Wind Gusts
≤ 2.0m/s
Precipitation Chance
≤ 10.0%
Visibility
≥ 5000.0m
Sun, May 24
13:002.4m/s3.4m/s98%24020m
14:002m/s3.2m/s97%24052m
15:002.6m/s4m/s97%24134m
16:002.5m/s3.7m/s66%24134m
17:002.5m/s3.9m/s33%24126m
18:002.5m/s4m/s0%24102m
19:002.6m/s4.3m/s0%11044m
20:002.5m/s3.8m/s0%24134m
21:002.6m/s4m/s0%24135m
22:002.5m/s3.8m/s0%4216m
23:002.4m/s3.6m/s0%4089m
Mon, May 25
24:002.4m/s3.5m/s0%3856m
01:002.4m/s3.4m/s0%4434m
02:002.3m/s2.8m/s0%8854m
03:002.7m/s3.6m/s0%12889m
04:002.6m/s3.5m/s6.8%9333m
05:002.6m/s3.6m/s14%5372m
06:002.5m/s3.7m/s20%9468m
07:002.5m/s4m/s22%24134m
08:002.5m/s3.9m/s24%24135m
09:002.7m/s3.9m/s26%24135m
10:002.5m/s2.8m/s37%24135m
11:002.5m/s2.4m/s47%24135m
12:002.1m/s1.6m/s58%24135m
13:001.9m/s1.5m/s60%24134m
14:001.3m/s1.6m/s63%24134m
15:001.8m/s3.1m/s65%23649m
16:001.1m/s1.7m/s44%23827m
17:000.5m/s0.6m/s22%23594m
18:001.6m/s1.5m/s0%24135m
19:002.1m/s1.8m/s0%24135m
20:002.2m/s2.4m/s0%24134m
21:002.5m/s3.1m/s0%24135m
22:002.6m/s3.2m/s0%24134m
23:002.6m/s3.2m/s0%24134m
Tue, May 26
24:002.5m/s3.1m/s0%13319m
01:002.6m/s3.2m/s0%7824m
02:002.7m/s3.2m/s0%4570m
03:002.7m/s3.4m/s0%4942m
04:002.9m/s3.8m/s33%24135m
05:002.7m/s3.4m/s67%24134m
06:002.9m/s4.1m/s100%24135m
07:003m/s4.1m/s77%24134m
08:003.2m/s4.6m/s54%24134m
09:002.6m/s4.2m/s31%24135m
10:002.7m/s4.2m/s25%24134m
11:002.2m/s3.2m/s20%24135m
12:002.1m/s3.1m/s15%24134m
13:002.1m/s2.8m/s24%24134m
14:002.3m/s3.3m/s32%24134m
15:002m/s3.5m/s41%24135m
16:002.6m/s4.9m/s48%24134m
17:002.8m/s4.7m/s54%24135m
18:002.4m/s5m/s61%23768m
19:002.3m/s3.4m/s65%24135m
20:002.4m/s3.6m/s69%9023m
21:002.5m/s4.3m/s74%6669m
22:003.2m/s6.3m/s74%5976m
23:003.5m/s8.1m/s75%6480m
Wed, May 27
24:003.6m/s7.5m/s76%12769m
01:003m/s8.2m/s82%4438m
02:003.7m/s9.7m/s88%3377m
03:003.6m/s9.8m/s95%3139m
04:003.5m/s8.5m/s90%3318m
05:003.5m/s7.3m/s85%3498m
06:003.4m/s6m/s81%3677m
07:003.3m/s5.9m/s83%5946m
08:003.2m/s5.8m/s86%8215m
09:003.1m/s5.7m/s88%10485m
10:003.1m/s5.5m/s84%8213m
11:003.1m/s5.4m/s81%5941m
12:003.1m/s5.2m/s77%3669m
13:002.8m/s4.9m/s81%2656m
14:002.6m/s4.5m/s84%1644m
15:002.4m/s4.1m/s88%632m
16:002.2m/s3.6m/s79%483m
17:002m/s3m/s69%333m
18:001.8m/s2.4m/s60%184m
19:001.5m/s2m/s67%1457m
20:001.3m/s1.5m/s75%2730m
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

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