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Rule Mirror Lake

Yufuin - Mirror Lake - Kyushu

Yufu, Oita, Japan

Perfectly calm water for flawless reflections

No opportunities right now
Here’s what usually blocks matches

No Mirror Lake opportunities in the next 14 days

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Rule requirements (key thresholds)
Wind Speed · ≤ 1.0m/s Wind Gusts · ≤ 2.0m/s Precipitation Chance · ≤ 10.0% Visibility · ≥ 5000.0m

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Precipitation Chance 94% failing
Wind Speed 78% failing
Wind Gusts 63% failing

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Asia/Tokyo

No opportunities in the next 10 days

See the blocker timeline below to understand which conditions are preventing matches.

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
2matching hours in the next 86 hoursJump to next match
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
Tue, Apr 21
13:003m/s4.7m/s0%24135m
14:002.2m/s3.6m/s0%24134m
15:001.6m/s2.8m/s0%24135m
16:001.4m/s2.4m/s0%24134m
17:000.66m/s1.3m/s0%24135m
18:000.31m/s0.4m/s0%24135m
19:001.4m/s1.3m/s0%24134m
20:002.1m/s1.8m/s0%24135m
21:002.3m/s1.9m/s0%24135m
22:002.3m/s1.9m/s0%24134m
23:002.1m/s1.7m/s0%24134m
Wed, Apr 22
24:001.8m/s1.6m/s0%24134m
01:001.6m/s1.4m/s0%24134m
02:001.7m/s1.5m/s0%24135m
03:001.8m/s1.5m/s0%24134m
04:001.5m/s1.3m/s0%24134m
05:001.5m/s1.3m/s0%24134m
06:001.5m/s1.4m/s0%24134m
07:000.96m/s1m/s19%24134m
08:000.32m/s0.7m/s37%24135m
09:001.2m/s1m/s56%24134m
10:001.5m/s1.7m/s69%24135m
11:001.9m/s2.1m/s82%24134m
12:002m/s2.4m/s95%24135m
13:001.3m/s1.7m/s97%24134m
14:001m/s1.2m/s98%24135m
15:001.5m/s2.3m/s100%24134m
16:001.9m/s2.8m/s100%18517m
17:001.7m/s2.5m/s99%21314m
18:001.7m/s2.6m/s99%24135m
19:000.66m/s1.3m/s100%10074m
20:000.98m/s1.4m/s100%2411m
21:001.3m/s2.2m/s100%939m
22:001.4m/s2.2m/s100%455m
23:001.7m/s3.1m/s100%372m
Thu, Apr 23
24:001.6m/s3m/s100%386m
01:001.9m/s4.5m/s100%648m
02:001.9m/s4.5m/s100%732m
03:001.4m/s2.8m/s100%2594m
04:001.5m/s2.9m/s100%915m
05:001.6m/s3m/s99%328m
06:001.7m/s2.9m/s99%297m
07:001m/s2.8m/s99%274m
08:002m/s4.4m/s99%271m
09:001.7m/s4m/s100%321m
10:002m/s5.1m/s99%497m
11:002.2m/s6.2m/s98%755m
12:002m/s6.5m/s97%4070m
13:002.4m/s7m/s97%6500m
14:002m/s5.5m/s97%4608m
15:002.2m/s6.2m/s97%8039m
16:002m/s6.9m/s75%20092m
17:001.9m/s5.8m/s53%9753m
18:002.1m/s4.6m/s31%23605m
19:001.7m/s4.3m/s30%24035m
20:002m/s4.6m/s30%24135m
21:002.1m/s5.1m/s30%24134m
22:002.1m/s3.7m/s37%24135m
23:002.2m/s3.6m/s43%24135m
Fri, Apr 24
24:002.2m/s3.2m/s50%24134m
01:002m/s2.6m/s43%24135m
02:002.2m/s3m/s36%24134m
03:002.1m/s2.4m/s28%24134m
04:002m/s2.2m/s36%24134m
05:002.1m/s2.1m/s43%24134m
06:002.3m/s2.2m/s50%24134m
07:001.7m/s2.3m/s43%24135m
08:002m/s5.4m/s36%24135m
09:002.7m/s6m/s28%24135m
10:002.3m/s4.6m/s27%24135m
11:001.8m/s3.3m/s25%24135m
12:001.4m/s1.9m/s24%24135m
13:001.3m/s1.6m/s28%24135m
14:001.1m/s1.3m/s33%24135m
15:000.97m/s0.93m/s38%24135m
16:000.85m/s0.81m/s44%24135m
17:000.72m/s0.69m/s51%24135m
18:000.6m/s0.56m/s57%24135m
19:000.49m/s0.55m/s60%24135m
20:000.38m/s0.55m/s62%24135m
21:000.27m/s0.54m/s65%24135m
22:000.23m/s0.5m/s63%24135m
23:000.2m/s0.46m/s60%24135m
Sat, Apr 25
24:000.16m/s0.42m/s57%24135m
01:000.59m/s1.2m/s56%24135m
02:001m/s1.9m/s55%24135m
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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