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Rule Fog Hunter

Sakurajima - Fog Hunter - Kyushu

Kagoshima, Kagoshima, Japan

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread1.4°C
Visibility24135 (Clear)
Relative Humidity92%
Wind Speed3.0m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Asia/Tokyo
fog weather icon
Next opportunity
Moderate Fog
Sakurajima
Wed, May 27 · 12:00–16:00 · 4h window
Low confidence
29%
🌫️Fog Probability78.8-83.7%
Dewpoint Spread: 0.5°C
Visibility: 1391 (Mist/Haze)
Relative Humidity: 97%
Wind Speed: 1.5m/s (calm conditions)

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
4matching 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
22:000%
23:000%
Sun, May 24
24:000%
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02:000%
03:000%
04:000%
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Mon, May 25
24:000%
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Tue, May 26
24:000%
01:000%
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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%
12:0079%
13:0079%
14:0079%
15:0084%
16:0054%
17:0044%
18:0053%
19:0055%
20:0039%
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 05:16 Sunset 19:12
22:00 ☾
0% 20°C 0mm 92% 0cm -28° 21°C 0mm 0.21kPa 24135m 6.2m/s 3m/s
23:00 ☾
0% 20°C 0mm 92% 0cm -35° 21°C 0mm 0.21kPa 24135m 5.5m/s 2.7m/s
Mon, May 25 Sunrise 05:16 Sunset 19:12
24:00 ☾
0% 20°C 0mm 92% 0cm -37° 21°C 0mm 0.19kPa 24134m 5.3m/s 2.6m/s
01:00 ☾
0% 20°C 0mm 92% 0cm -36° 21°C 0mm 0.19kPa 24134m 5.5m/s 2.6m/s
02:00 ☾
0% 20°C 0mm 93% 0cm -32° 21°C 0mm 0.18kPa 24134m 6.2m/s 2.9m/s
03:00 ☾
0% 20°C 0mm 91% 0cm -24° 21°C 0mm 0.22kPa 24134m 6.9m/s 2.9m/s
04:00 ☾
2% 20°C 0mm 92% 0cm -15° 21°C 0mm 0.2kPa 24135m 7.1m/s 2.9m/s
05:00 ☾
3% 19°C 0mm 92% 0cm -3.8° 21°C 0mm 0.2kPa 24134m 6.7m/s 2.5m/s
06:00 ☾
5% 19°C 0mm 90% 0cm 7.9° 21°C 0mm 0.24kPa 24135m 8m/s 3.4m/s
07:00 ☾
6% 20°C 0mm 88% 0cm 20° 22°C 0mm 0.3kPa 24134m 8.4m/s 3.5m/s
08:00 ☾
8% 19°C 0mm 81% 0cm 33° 23°C 0mm 0.51kPa 24135m 8m/s 3.7m/s
09:00
9% 19°C 0mm 77% 0cm 45° 23°C 0mm 0.66kPa 24135m 7.5m/s 4m/s
10:00
18% 19°C 0mm 73% 0cm 58° 24°C 0mm 0.83kPa 24135m 6.8m/s 3.6m/s
11:00
26% 19°C 0mm 69% 0cm 70° 25°C 0mm 0.99kPa 24135m 8m/s 4.5m/s
12:00
35% 19°C 0mm 65% 0cm 79° 26°C 0mm 1.1kPa 24135m 6.6m/s 3.9m/s
13:00
33% 19°C 0mm 63% 0cm 75° 26°C 0mm 1.2kPa 24134m 6.4m/s 4.6m/s
14:00
31% 19°C 0mm 64% 0cm 64° 26°C 0mm 1.2kPa 24134m 7m/s 4.7m/s
15:00
29% 18°C 0mm 63% 0cm 52° 26°C 0mm 1.2kPa 24134m 6.2m/s 4.3m/s
16:00
30% 18°C 0mm 64% 0cm 39° 25°C 0mm 1.1kPa 24135m 6.8m/s 4.7m/s
17:00
30% 18°C 0mm 68% 0cm 26° 25°C 0mm 1kPa 24134m 6.5m/s 4.3m/s
18:00
31% 19°C 0mm 73% 0cm 14° 24°C 0mm 0.81kPa 24135m 6.6m/s 4.1m/s
19:00
34% 19°C 0mm 80% 0cm 2.1° 22°C 0mm 0.55kPa 24135m 7.2m/s 4m/s
20:00 ☾
36% 19°C 0mm 85% 0cm -9.5° 22°C 0mm 0.4kPa 24134m 7.3m/s 3.7m/s
21:00 ☾
39% 19°C 0mm 88% 0cm -20° 21°C 0mm 0.29kPa 24135m 7.4m/s 3.4m/s
22:00 ☾
42% 19°C 0mm 89% 0cm -28° 21°C 0mm 0.26kPa 24134m 7.3m/s 3.3m/s
23:00 ☾
45% 19°C 0mm 90% 0cm -34° 20°C 0mm 0.23kPa 24134m 6.7m/s 3m/s
Tue, May 26 Sunrise 05:16 Sunset 19:13
24:00 ☾
48% 19°C 0mm 91% 0cm -37° 20°C 0mm 0.22kPa 24134m 6.5m/s 2.9m/s
01:00 ☾
44% 19°C 0mm 91% 0cm -36° 20°C 0mm 0.21kPa 24134m 6.9m/s 2.9m/s
02:00 ☾
41% 19°C 0mm 92% 0cm -32° 20°C 0mm 0.19kPa 24135m 6.3m/s 2.6m/s
03:00 ☾
37% 19°C 0mm 92% 0cm -24° 20°C 0mm 0.18kPa 24134m 6.7m/s 2.8m/s
04:00 ☾
34% 19°C 0mm 92% 0cm -15° 20°C 0mm 0.19kPa 24135m 7.4m/s 3.2m/s
05:00 ☾
32% 19°C 0mm 91% 0cm -3.7° 20°C 0mm 0.22kPa 24134m 7.5m/s 3.4m/s
06:00 ☾
29% 19°C 0mm 89% 0cm 8° 20°C 0mm 0.27kPa 24135m 7.5m/s 3.3m/s
07:00 ☾
26% 19°C 0mm 86% 0cm 20° 21°C 0mm 0.36kPa 24134m 8.4m/s 4m/s
08:00 ☾
22% 19°C 0mm 84% 0cm 33° 22°C 0mm 0.42kPa 24134m 9.1m/s 4.6m/s
09:00
19% 18°C 0mm 75% 0cm 45° 23°C 0mm 0.71kPa 24135m 7.8m/s 4.4m/s
10:00
17% 18°C 0mm 70% 0cm 58° 24°C 0mm 0.88kPa 24134m 7.2m/s 4.3m/s
11:00
16% 18°C 0mm 74% 0cm 70° 23°C 0mm 0.75kPa 24135m 7.8m/s 3.9m/s
12:00
14% 19°C 0mm 74% 0cm 79° 23°C 0mm 0.76kPa 24134m 7.5m/s 3.7m/s
13:00
13% 18°C 0mm 65% 0cm 75° 25°C 0mm 1.1kPa 24134m 7.7m/s 5.6m/s
14:00
13% 19°C 0mm 72% 0cm 64° 24°C 0mm 0.85kPa 24134m 7.4m/s 4.5m/s
15:00
12% 19°C 0mm 74% 0cm 52° 23°C 0mm 0.73kPa 24135m 7.6m/s 4.5m/s
16:00
10% 19°C 0.01mm 77% 0cm 39° 23°C 0.06mm 0.62kPa 24134m 8m/s 4.6m/s
17:00
7% 19°C 0.13mm 82% 0cm 26° 22°C 0.13mm 0.49kPa 24135m 7.7m/s 4.3m/s
18:00
5% 19°C 0mm 85% 0cm 14° 22°C 0.19mm 0.39kPa 24134m 8.2m/s 4m/s
19:00
4% 19°C 0.02mm 85% 0cm 2.2° 22°C 0.19mm 0.38kPa 24135m 8.5m/s 4.2m/s
20:00 ☾
4% 19°C 0.01mm 85% 0cm -9.3° 21°C 0.19mm 0.39kPa 24134m 8.7m/s 4.2m/s
21:00 ☾
3% 19°C 0.03mm 85% 0cm -20° 21°C 0.25mm 0.37kPa 22409m 8.8m/s 4.2m/s
22:00 ☾
3% 19°C 0.1mm 86% 0cm -28° 21°C 0.06mm 0.34kPa 24134m 9m/s 4.4m/s
23:00 ☾
4% 19°C 0.84mm 89% 0cm -34° 21°C 0.56mm 0.26kPa 13643m 9m/s 4m/s
Wed, May 27 Sunrise 05:15 Sunset 19:14
24:00 ☾
4% 19°C 0.87mm 92% 0cm -37° 20°C 1.7mm 0.19kPa 12833m 9.4m/s 4.1m/s
01:00 ☾
3% 19°C 2.4mm 94% 0cm -36° 20°C 3.3mm 0.15kPa 6997m 9.4m/s 3.9m/s
02:00 ☾
3% 19°C 2.3mm 95% 0cm -32° 20°C 5.9mm 0.11kPa 8488m 8.9m/s 3.7m/s
03:00 ☾
2% 19°C 2.6mm 95% 0cm -24° 20°C 7.8mm 0.11kPa 6346m 8.1m/s 3.1m/s
04:00 ☾
1% 20°C 2.3mm 96% 0cm -15° 20°C 8.9mm 0.09kPa 4362m 7.6m/s 3.2m/s
05:00 ☾
1% 21°C 1.9mm 98% 0cm -3.7° 21°C 10mm 0.06kPa 2378m 7m/s 3.2m/s
06:00 ☾
0% 21°C 1.6mm 99% 0cm 8° 21°C 11mm 0.03kPa 394m 6.5m/s 3.3m/s
07:00 ☾
0% 21°C 1.1mm 99% 0cm 20° 21°C 12mm 0.04kPa 407m 5.9m/s 3.2m/s
08:00 ☾
0% 21°C 0.57mm 98% 0cm 33° 21°C 12mm 0.04kPa 419m 5.3m/s 3m/s
09:00
0% 21°C 0.07mm 98% 0cm 46° 21°C 13mm 0.05kPa 432m 4.7m/s 2.8m/s
10:00
0% 21°C 0.05mm 98% 0cm 58° 22°C 8.7mm 0.05kPa 1205m 4.3m/s 2.7m/s
11:00
0% 21°C 0.03mm 98% 0cm 70° 22°C 4.4mm 0.06kPa 1978m 4m/s 2.5m/s
12:00
0% 21°C 0.01mm 97% 0cm 79° 22°C 0.13mm 0.07kPa 2750m 3.6m/s 2.4m/s
13:00
0% 21°C 0.01mm 97% 0cm 76° 22°C 0.15mm 0.07kPa 2297m 3.2m/s 2.1m/s
14:00
0% 21°C 0.02mm 97% 0cm 64° 22°C 0.17mm 0.08kPa 1844m 2.8m/s 1.8m/s
15:00
0% 21°C 0.02mm 97% 0cm 52° 22°C 0.19mm 0.08kPa 1391m 2.4m/s 1.5m/s
16:00
0% 21°C 0.03mm 97% 0cm 39° 22°C 0.15mm 0.08kPa 7565m 1.9m/s 1.2m/s
17:00
0% 21°C 0.04mm 97% 0cm 26° 22°C 0.1mm 0.08kPa 13738m 1.4m/s 0.83m/s
18:00
0% 21°C 0.05mm 97% 0cm 14° 22°C 0.06mm 0.09kPa 19911m 0.83m/s 0.5m/s
19:00
0% 21°C 0.11mm 97% 0cm 2.3° 22°C 0.15mm 0.08kPa 19101m 0.77m/s 0.56m/s
20:00 ☾
0% 21°C 0.17mm 97% 0cm -9.2° 22°C 0.23mm 0.08kPa 18290m 0.72m/s 0.61m/s
21:00 ☾
0% 21°C 0.23mm 97% 0cm -19° 22°C 0.31mm 0.07kPa 17480m 0.67m/s 0.67m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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