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Rule Fog Hunter

Yufuin - Fog Hunter - Kyushu

Yufu, Oita, Japan

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Fog Probability
55%
Dewpoint Spread0.5°C
Visibility24135 (Clear)
Relative Humidity97%
Wind Speed1.7m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Asia/Tokyo
fog weather icon
Next opportunity
Dense Fog
Yufuin
Tomorrow · 02:00–04:00 · 2h window
High confidence
79%
🌫️Fog Probability86%
Dewpoint Spread: 0.3°C
Visibility: 5637 (Moderate)
Relative Humidity: 98%
Wind Speed: 1.5m/s (calm conditions)
fog weather icon
Dense Fog at Sunrise
Yufuin
Tomorrow · 04:00–06:00
🌫️Fog Probability:86-88.6%
High
fog weather icon
Dense Fog
Yufuin
Tomorrow · 06:00–07:00
🌫️Fog Probability:86%
Medium
fog weather icon
Dense Fog
Yufuin
Thu, May 28 · 24:00–02:00
🌫️Fog Probability:88.6-100%
High

What this forecast looks for

Plain-language explanation from the rule

This forecast predicts when Kyushu's volcanic steam, subtropical humidity, and mountainous terrain create atmospheric photography conditions. We track temperature inversions, humidity patterns, and geothermal activity to identify when mist transforms calderas, forests, and onsen villages.

Kyushu's subtropical climate and active volcanism create fog conditions unlike anywhere else in Japan. Mount Aso's massive caldera traps morning mist around its active crater, while Yakushima's ancient cedars remain wrapped in perpetual cloud. Yufuin's onsen village sees lake mist rising from thermal springs beneath Mount Yufu's twin peaks.

What makes Kyushu fog photography special:

  • Volcanic steam mixing with natural fog - Mount Aso's active crater sends white plumes into morning mist creating otherworldly layers
  • Subtropical forest clouds - Yakushima's 3,000-year-old cedars emerge from moss-draped mist receiving 250+ inches annual rainfall
  • Onsen village atmospherics - Thermal springs in Yufuin and Beppu create steam rising from streets and ponds blending with natural fog
  • Crater lake mysteries - Kirishima's volcanic lakes develop morning fog banks isolated between peaks

Lake Kinrinko in Yufuin produces spectacular morning mist November through March when cold air meets thermal waters—arrive before dawn for steam rising across mirror-calm surface with Mount Yufu reflected. Mount Aso's caldera rim offers views into fog-filled volcanic bowls with Nakadake crater's steam plume above. Yakushima's forest trails become mystical when fog drifts through moss-covered ancient trees. Best conditions occur on clear cold winter mornings, though Yakushima's fog is reliably year-round.

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72-hour requirements breakdown

What passed or failed, hour by hour
8matching hours in the next 95 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Asia/Tokyo
Fog Probability
≥ 75.0%
Sat, May 23
22:0067%
23:0055%
Sun, May 24
24:0055%
01:0053%
02:0039%
03:0041%
04:0071%
05:0080%
06:00100%
07:00100%
08:0069%
09:000%
10:0053%
11:0045%
12:0038%
13:000%
14:000%
15:000%
16:0071%
17:0038%
18:0036%
19:0037%
20:0033%
21:0033%
22:0055%
23:0071%
Mon, May 25
24:0071%
01:0071%
02:0086%
03:0086%
04:0086%
05:0089%
06:0086%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:0055%
22:0058%
23:0071%
Tue, May 26
24:0071%
01:0071%
02:0071%
03:0071%
04:0071%
05:0071%
06:0053%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Wed, May 27
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:0068%
19:0068%
20:0068%
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Fog Probability mean?

Inputs that drive the score

This derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.

Time
Asia/Tokyo
Clear Sky Probability (Ensemble)
%
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Solar Elevation
°
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Visibility
m
Wind Gusts
m/s
Wind Speed
m/s
Sun, May 24 Sunrise 05:09 Sunset 19:13
22:00 ☾
0% 18°C 0mm 97% 0cm -28° 18°C 0mm 0.07kPa 24135m 2.4m/s 1.7m/s
23:00 ☾
0% 18°C 0mm 97% 0cm -33° 18°C 0mm 0.06kPa 24135m 2.2m/s 1.7m/s
Mon, May 25 Sunrise 05:09 Sunset 19:13
24:00 ☾
0% 17°C 0mm 98% 0cm -36° 18°C 0mm 0.05kPa 24134m 1.7m/s 1.5m/s
01:00 ☾
0% 18°C 0mm 98% 0cm -35° 18°C 0mm 0.04kPa 24134m 2m/s 1.6m/s
02:00 ☾
0% 18°C 0mm 98% 0cm -30° 18°C 0mm 0.04kPa 5637m 2.7m/s 1.5m/s
03:00 ☾
0% 18°C 0mm 98% 0cm -23° 18°C 0mm 0.04kPa 5484m 2.4m/s 1.5m/s
04:00 ☾
0% 18°C 0mm 98% 0cm -13° 18°C 0mm 0.04kPa 3709m 2.6m/s 1.5m/s
05:00 ☾
1% 17°C 0mm 99% 0cm -2.4° 18°C 0mm 0.03kPa 3561m 1.5m/s 1.2m/s
06:00 ☾
1% 18°C 0mm 98% 0cm 9.1° 18°C 0mm 0.04kPa 3497m 2.7m/s 1.4m/s
07:00 ☾
1% 18°C 0mm 95% 0cm 21° 19°C 0mm 0.12kPa 4823m 4.1m/s 2m/s
08:00 ☾
0% 18°C 0mm 86% 0cm 34° 21°C 0.06mm 0.35kPa 24135m 5.6m/s 2.7m/s
09:00
0% 18°C 0mm 75% 0cm 46° 23°C 0.06mm 0.68kPa 24135m 5.5m/s 3m/s
10:00
8% 18°C 0mm 67% 0cm 58° 24°C 0.06mm 0.99kPa 24135m 5.5m/s 3.9m/s
11:00
15% 17°C 0mm 61% 0cm 70° 25°C 0.06mm 1.3kPa 24135m 5.5m/s 4m/s
12:00
23% 17°C 0mm 63% 0cm 77° 25°C 0.06mm 1.2kPa 24135m 5.1m/s 4.1m/s
13:00
25% 17°C 0mm 60% 0cm 74° 26°C 0.13mm 1.3kPa 24134m 4.4m/s 3.9m/s
14:00
26% 17°C 0mm 57% 0cm 63° 26°C 0.13mm 1.5kPa 24134m 4m/s 4.1m/s
15:00
28% 17°C 0mm 58% 0cm 51° 26°C 0.13mm 1.4kPa 24134m 4m/s 4.2m/s
16:00
36% 18°C 0mm 60% 0cm 38° 26°C 0mm 1.3kPa 24135m 4.4m/s 4.6m/s
17:00
43% 18°C 0mm 67% 0cm 26° 24°C 0mm 1kPa 24134m 4.8m/s 3.9m/s
18:00
51% 18°C 0mm 75% 0cm 14° 23°C 0mm 0.7kPa 24135m 4.2m/s 2.8m/s
19:00
45% 18°C 0mm 88% 0cm 2.1° 20°C 0mm 0.28kPa 24135m 2.2m/s 1.7m/s
20:00 ☾
38% 18°C 0mm 94% 0cm -9.2° 19°C 0mm 0.13kPa 24134m 1.8m/s 1.4m/s
21:00 ☾
32% 17°C 0mm 96% 0cm -19° 18°C 0mm 0.08kPa 24135m 1.9m/s 1.6m/s
22:00 ☾
25% 17°C 0mm 97% 0cm -27° 18°C 0mm 0.06kPa 24134m 2.1m/s 1.6m/s
23:00 ☾
18% 17°C 0mm 98% 0cm -33° 17°C 0mm 0.05kPa 24134m 1.9m/s 1.6m/s
Tue, May 26 Sunrise 05:09 Sunset 19:13
24:00 ☾
11% 17°C 0mm 98% 0cm -36° 17°C 0mm 0.04kPa 24134m 2m/s 1.7m/s
01:00 ☾
9% 16°C 0mm 98% 0cm -35° 17°C 0mm 0.04kPa 24134m 2.1m/s 1.8m/s
02:00 ☾
8% 16°C 0mm 98% 0cm -30° 16°C 0mm 0.04kPa 24135m 1.9m/s 1.7m/s
03:00 ☾
6% 16°C 0mm 98% 0cm -22° 16°C 0mm 0.04kPa 23031m 2.1m/s 1.8m/s
04:00 ☾
6% 16°C 0mm 97% 0cm -13° 16°C 0mm 0.05kPa 24135m 1.8m/s 1.7m/s
05:00 ☾
5% 15°C 0mm 97% 0cm -2.3° 16°C 0mm 0.05kPa 24134m 1.8m/s 1.6m/s
06:00 ☾
5% 16°C 0mm 95% 0cm 9.2° 17°C 0mm 0.09kPa 24135m 2.8m/s 1.7m/s
07:00 ☾
4% 17°C 0mm 90% 0cm 21° 19°C 0mm 0.21kPa 5234m 4.9m/s 2.1m/s
08:00 ☾
2% 17°C 0mm 84% 0cm 34° 20°C 0mm 0.38kPa 11346m 8.1m/s 3.3m/s
09:00
1% 17°C 0mm 70% 0cm 46° 22°C 0mm 0.79kPa 24135m 7.4m/s 4.5m/s
10:00
1% 16°C 0mm 61% 0cm 59° 24°C 0mm 1.2kPa 24134m 7.1m/s 5.2m/s
11:00
0% 16°C 0mm 58% 0cm 70° 25°C 0mm 1.4kPa 24135m 6.9m/s 5.8m/s
12:00
0% 16°C 0mm 58% 0cm 78° 25°C 0mm 1.4kPa 24134m 6.9m/s 5.7m/s
13:00
0% 16°C 0mm 58% 0cm 74° 25°C 0mm 1.3kPa 24134m 7.1m/s 5.7m/s
14:00
0% 16°C 0mm 61% 0cm 63° 24°C 0mm 1.2kPa 24134m 6.5m/s 5.1m/s
15:00
0% 16°C 0.16mm 65% 0cm 51° 23°C 0.13mm 0.98kPa 24135m 6.7m/s 4.7m/s
16:00
1% 16°C 0.01mm 73% 0cm 38° 21°C 0.06mm 0.67kPa 24134m 8.7m/s 4m/s
17:00
3% 17°C 0mm 75% 0cm 26° 21°C 0.06mm 0.62kPa 24135m 8.2m/s 4m/s
18:00
4% 16°C 0mm 77% 0cm 14° 21°C 0.06mm 0.57kPa 24134m 9.1m/s 3.6m/s
19:00
4% 16°C 0mm 79% 0cm 2.2° 20°C 0.06mm 0.5kPa 24135m 9.4m/s 3.2m/s
20:00 ☾
3% 16°C 0mm 80% 0cm -9° 20°C 0.06mm 0.46kPa 24134m 7.9m/s 2.5m/s
21:00 ☾
3% 16°C 0.27mm 84% 0cm -19° 19°C 0.25mm 0.36kPa 20243m 5m/s 2.1m/s
22:00 ☾
2% 17°C 1.3mm 94% 0cm -27° 18°C 1mm 0.12kPa 9332m 5m/s 2.1m/s
23:00 ☾
2% 17°C 1.3mm 98% 0cm -33° 17°C 2.2mm 0.05kPa 6752m 4.5m/s 1.6m/s
Wed, May 27 Sunrise 05:08 Sunset 19:14
24:00 ☾
1% 17°C 1mm 98% 0cm -36° 17°C 3.3mm 0.04kPa 4731m 5.3m/s 1.6m/s
01:00 ☾
1% 17°C 1.4mm 99% 0cm -34° 17°C 4.7mm 0.02kPa 1385m 6.8m/s 1.8m/s
02:00 ☾
1% 17°C 2.2mm 99% 0cm -30° 17°C 6.2mm 0.02kPa 1305m 6.5m/s 1.9m/s
03:00 ☾
1% 18°C 4mm 100% 0cm -22° 18°C 9.7mm 0.01kPa 772m 8m/s 2.2m/s
04:00 ☾
1% 18°C 3mm 99% 0cm -13° 18°C 8.9mm 0.01kPa 3094m 6.6m/s 2m/s
05:00 ☾
0% 18°C 2mm 99% 0cm -2.2° 18°C 8.1mm 0.02kPa 5417m 5.3m/s 1.7m/s
06:00 ☾
0% 18°C 1.1mm 99% 0cm 9.2° 18°C 7.3mm 0.03kPa 7739m 3.9m/s 1.5m/s
07:00 ☾
0% 18°C 0.75mm 99% 0cm 21° 18°C 8mm 0.03kPa 11062m 3.4m/s 1.3m/s
08:00 ☾
0% 18°C 0.44mm 98% 0cm 34° 19°C 8.6mm 0.03kPa 14385m 2.9m/s 1.2m/s
09:00
0% 19°C 0.12mm 98% 0cm 46° 19°C 9.3mm 0.03kPa 17709m 2.4m/s 0.98m/s
10:00
1% 19°C 0.39mm 99% 0cm 59° 19°C 6.8mm 0.02kPa 11919m 2m/s 0.95m/s
11:00
3% 19°C 0.65mm 99% 0cm 70° 19°C 4.2mm 0.01kPa 6130m 1.7m/s 0.92m/s
12:00
4% 19°C 0.92mm 100% 0cm 78° 19°C 1.7mm 0kPa 341m 1.3m/s 0.88m/s
13:00
3% 19°C 0.68mm 100% 0cm 74° 19°C 2.3mm 0.01kPa 281m 1.2m/s 0.84m/s
14:00
3% 19°C 0.45mm 100% 0cm 63° 19°C 2.9mm 0.01kPa 220m 1.1m/s 0.8m/s
15:00
2% 19°C 0.21mm 100% 0cm 51° 19°C 3.4mm 0.01kPa 160m 1m/s 0.76m/s
16:00
2% 19°C 0.19mm 100% 0cm 39° 19°C 2.5mm 0.01kPa 141m 1m/s 0.79m/s
17:00
2% 19°C 0.17mm 100% 0cm 26° 19°C 1.5mm 0.01kPa 123m 0.96m/s 0.81m/s
18:00
2% 19°C 0.15mm 100% 0cm 14° 19°C 0.5mm 0.01kPa 104m 0.93m/s 0.83m/s
19:00
1% 19°C 0.11mm 100% 0cm 2.3° 19°C 0.54mm 0.01kPa 195m 0.81m/s 0.7m/s
20:00 ☾
1% 19°C 0.06mm 99% 0cm -8.9° 19°C 0.58mm 0.01kPa 287m 0.69m/s 0.56m/s
21:00 ☾
0% 19°C 0.02mm 99% 0cm -19° 19°C 0.63mm 0.01kPa 378m 0.57m/s 0.43m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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