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Rule Fog Hunter

Beppu - Fog Hunter - Kyushu

Beppu, Oita, Japan

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Fog Probability
63%
Dewpoint Spread0.1°C
Visibility214 (Fog)
Relative Humidity100%
Wind Speed0.2m/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
Beppu
Today · 04:00–05:00 · 1h window
Medium confidence
53%
🌫️Fog Probability63.4%
Dewpoint Spread: 0.1°C
Visibility: 214 (Fog)
Relative Humidity: 100%
Wind Speed: 0.2m/s (calm conditions)
fog weather icon
Moderate Fog at Sunrise
Beppu
Today · 05:00–06:00
🌫️Fog Probability:66.7%
Medium
fog weather icon
Dense Fog
Beppu
Today · 16:00–17:00
🌫️Fog Probability:93.3%
High
fog weather icon
Moderate Fog at Sunset
Beppu
Today · 18:00–19:00
🌫️Fog Probability:60.1%
Medium
fog weather icon
Moderate Fog
Beppu
Today · 22:00–23:00
🌫️Fog Probability:61.4%
Medium
fog weather icon
Moderate Fog
Beppu
Tomorrow · 24:00–02:00
🌫️Fog Probability:61.4-65.4%
Low
fog weather icon
Moderate Fog at Sunset
Beppu
Sat, Apr 18 · 18:00–20:00
🌫️Fog Probability:74.6-81%
Medium
+2 more windows in the next 10 days

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
7matching hours in the next 95 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Asia/Tokyo
Fog Probability
≥ 60.0%
Tue, Apr 14
04:0034%
05:0039%
06:0039%
07:000%
08:000%
09:000%
10:0024%
11:0033%
12:0037%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Wed, Apr 15
24:000%
01:000%
02:000%
03:000%
04:0063%
05:0067%
06:000%
07:000%
08:000%
09:000%
10:0053%
11:000%
12:000%
13:000%
14:000%
15:000%
16:0093%
17:0058%
18:0060%
19:0057%
20:0050%
21:0043%
22:0061%
23:0052%
Thu, Apr 16
24:0061%
01:0065%
02:0057%
03:0055%
04:0046%
05:0046%
06:0046%
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%
Fri, Apr 17
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%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Sat, Apr 18
24:000%
01:000%
02:000%
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
Wed, Apr 15 Sunrise 05:45 Sunset 18:43
04:00 ☾
0% 14°C 0.31mm 100% 0cm -21° 14°C 0.38mm 0.01kPa 214m 0.92m/s 0.17m/s
05:00 ☾
0% 14°C 0.69mm 100% 0cm -9.8° 14°C 0.94mm 0kPa 175m 1.4m/s 0.74m/s
06:00 ☾
0% 14°C 0.28mm 100% 0cm 2.6° 14°C 1.3mm 0kPa 131m 1.4m/s 0.7m/s
07:00 ☾
0% 14°C 0.37mm 100% 0cm 15° 14°C 1.8mm 0kPa 118m 1.6m/s 0.86m/s
08:00 ☾
0% 14°C 0.25mm 100% 0cm 27° 14°C 2.1mm 0kPa 97m 1.7m/s 0.98m/s
09:00
0% 14°C 1mm 100% 0cm 40° 14°C 2.8mm 0kPa 103m 1.1m/s 0.67m/s
10:00
0% 14°C 0.27mm 100% 0cm 51° 14°C 0.81mm 0kPa 115m 0.8m/s 0.54m/s
11:00
0% 14°C 0.13mm 100% 0cm 61° 14°C 1.1mm 0kPa 131m 0.7m/s 0.52m/s
12:00
0% 15°C 0.12mm 100% 0cm 66° 15°C 1.3mm 0.01kPa 123m 0.9m/s 0.79m/s
13:00
0% 15°C 0.08mm 100% 0cm 64° 15°C 1.4mm 0.01kPa 110m 1.2m/s 1m/s
14:00
0% 15°C 0.05mm 100% 0cm 56° 15°C 1.6mm 0.01kPa 92m 1.3m/s 1.1m/s
15:00
0% 15°C 0.1mm 100% 0cm 45° 15°C 1.8mm 0.01kPa 106m 1.9m/s 1.4m/s
16:00
0% 14°C 0.09mm 99% 0cm 33° 15°C 0.19mm 0.01kPa 163m 2.1m/s 1.2m/s
17:00
0% 14°C 0.06mm 99% 0cm 21° 14°C 0.31mm 0.01kPa 260m 2.1m/s 1.1m/s
18:00
0% 14°C 0.01mm 99% 0cm 8.4° 14°C 0.31mm 0.02kPa 523m 3.5m/s 1.5m/s
19:00 ☾
0% 14°C 0mm 98% 0cm -3.9° 14°C 0.31mm 0.03kPa 361m 3.5m/s 1.4m/s
20:00 ☾
1% 13°C 0mm 98% 0cm -16° 14°C 0.31mm 0.03kPa 2425m 4.3m/s 1.9m/s
21:00 ☾
1% 13°C 0mm 97% 0cm -27° 14°C 0.38mm 0.05kPa 3396m 4.6m/s 2.3m/s
22:00 ☾
11% 13°C 0mm 96% 0cm -36° 14°C 0mm 0.06kPa 3390m 3.7m/s 2.1m/s
23:00 ☾
20% 13°C 0mm 96% 0cm -43° 13°C 0mm 0.06kPa 9812m 5m/s 2.6m/s
Thu, Apr 16 Sunrise 05:44 Sunset 18:44
24:00 ☾
30% 12°C 0mm 96% 0cm -47° 13°C 0mm 0.06kPa 3772m 4.5m/s 2.4m/s
01:00 ☾
31% 12°C 0mm 96% 0cm -45° 12°C 0mm 0.05kPa 3514m 4m/s 2.4m/s
02:00 ☾
32% 12°C 0mm 96% 0cm -40° 12°C 0mm 0.05kPa 4351m 4.7m/s 2.7m/s
03:00 ☾
33% 11°C 0mm 96% 0cm -31° 12°C 0mm 0.05kPa 24134m 3.9m/s 2.7m/s
04:00 ☾
39% 11°C 0mm 96% 0cm -21° 11°C 0mm 0.06kPa 24135m 4m/s 2.7m/s
05:00 ☾
44% 10°C 0mm 95% 0cm -9.5° 11°C 0mm 0.06kPa 24134m 4.2m/s 2.9m/s
06:00 ☾
50% 10°C 0mm 95% 0cm 2.8° 11°C 0mm 0.06kPa 24135m 4.3m/s 2.9m/s
07:00 ☾
53% 12°C 0mm 93% 0cm 15° 13°C 0mm 0.1kPa 24135m 3.8m/s 2.4m/s
08:00 ☾
55% 12°C 0mm 83% 0cm 28° 14°C 0mm 0.27kPa 24135m 4.2m/s 1.7m/s
09:00
58% 11°C 0mm 74% 0cm 40° 16°C 0mm 0.46kPa 24135m 4m/s 1.6m/s
10:00
67% 9.5°C 0mm 61% 0cm 52° 17°C 0mm 0.76kPa 24134m 4.9m/s 2.3m/s
11:00
75% 8°C 0mm 51% 0cm 61° 18°C 0mm 1kPa 24134m 5m/s 2.9m/s
12:00
84% 6.4°C 0mm 44% 0cm 67° 19°C 0mm 1.2kPa 24135m 5.2m/s 3.2m/s
13:00
84% 4.9°C 0mm 39% 0cm 65° 19°C 0mm 1.4kPa 24135m 5.4m/s 3.3m/s
14:00
85% 4.8°C 0mm 39% 0cm 56° 19°C 0mm 1.4kPa 24135m 5.6m/s 3.6m/s
15:00
85% 4.7°C 0mm 40% 0cm 45° 19°C 0mm 1.3kPa 24135m 5.1m/s 3m/s
16:00
84% 5.3°C 0mm 42% 0cm 33° 18°C 0mm 1.2kPa 24135m 4.3m/s 2m/s
17:00
82% 7.6°C 0mm 51% 0cm 21° 18°C 0mm 1kPa 24134m 3.3m/s 1.1m/s
18:00
81% 9°C 0mm 64% 0cm 8.5° 16°C 0mm 0.64kPa 24134m 0.81m/s 0.79m/s
19:00 ☾
76% 6.9°C 0mm 65% 0cm -3.8° 13°C 0mm 0.53kPa 24134m 1.6m/s 1.9m/s
20:00 ☾
72% 6°C 0mm 64% 0cm -16° 13°C 0mm 0.52kPa 24134m 1.6m/s 1.9m/s
21:00 ☾
67% 5.6°C 0mm 63% 0cm -27° 12°C 0mm 0.53kPa 24135m 1.8m/s 2.2m/s
22:00 ☾
51% 5.2°C 0mm 61% 0cm -36° 12°C 0mm 0.56kPa 24134m 1.3m/s 1.5m/s
23:00 ☾
34% 4.9°C 0mm 62% 0cm -43° 12°C 0mm 0.53kPa 24134m 1.5m/s 1.7m/s
Fri, Apr 17 Sunrise 05:43 Sunset 18:44
24:00 ☾
18% 5.1°C 0mm 64% 0cm -46° 12°C 0mm 0.5kPa 24134m 1.2m/s 1.2m/s
01:00 ☾
13% 5.1°C 0mm 66% 0cm -45° 11°C 0mm 0.45kPa 24134m 1.6m/s 1.6m/s
02:00 ☾
8% 5.2°C 0mm 65% 0cm -40° 12°C 0mm 0.48kPa 24135m 1.9m/s 2m/s
03:00 ☾
3% 4.9°C 0mm 66% 0cm -31° 11°C 0mm 0.45kPa 24134m 2.2m/s 2.1m/s
04:00 ☾
2% 5.3°C 0mm 67% 0cm -21° 11°C 0mm 0.44kPa 24135m 2.5m/s 2.1m/s
05:00 ☾
1% 5.9°C 0mm 68% 0cm -9.3° 11°C 0mm 0.43kPa 24134m 2.8m/s 2m/s
06:00 ☾
0% 7.2°C 0mm 73% 0cm 3.1° 12°C 0mm 0.38kPa 24135m 2.1m/s 1.7m/s
07:00 ☾
0% 9.3°C 0mm 76% 0cm 15° 14°C 0mm 0.38kPa 24135m 2.1m/s 1.3m/s
08:00 ☾
0% 10°C 0.01mm 77% 0cm 28° 14°C 0mm 0.36kPa 24134m 3.8m/s 1.5m/s
09:00
0% 11°C 0mm 74% 0cm 40° 15°C 0mm 0.45kPa 24135m 7.5m/s 2.1m/s
10:00
0% 11°C 0mm 75% 0cm 52° 16°C 0.02mm 0.43kPa 24135m 9.4m/s 3.8m/s
11:00
0% 12°C 0mm 77% 0cm 62° 16°C 0.04mm 0.41kPa 24135m 11m/s 5.5m/s
12:00
0% 12°C 0mm 78% 0cm 67° 16°C 0.06mm 0.39kPa 24135m 13m/s 7.2m/s
13:00
0% 12°C 0mm 77% 0cm 65° 16°C 0.06mm 0.42kPa 24135m 13m/s 7.4m/s
14:00
0% 11°C 0mm 75% 0cm 57° 15°C 0.06mm 0.44kPa 24135m 14m/s 7.7m/s
15:00
0% 10°C 0mm 73% 0cm 46° 15°C 0.06mm 0.47kPa 24135m 14m/s 7.9m/s
16:00
0% 10°C 0mm 74% 0cm 34° 15°C 0.04mm 0.45kPa 24135m 14m/s 8m/s
17:00
1% 11°C 0mm 74% 0cm 21° 15°C 0.02mm 0.44kPa 24135m 14m/s 8.2m/s
18:00
1% 11°C 0mm 75% 0cm 8.7° 15°C 0mm 0.43kPa 24135m 15m/s 8.3m/s
19:00 ☾
1% 11°C 0.007mm 77% 0cm -3.6° 15°C 0mm 0.39kPa 24135m 14m/s 7.6m/s
20:00 ☾
1% 11°C 0.01mm 79% 0cm -15° 15°C 0mm 0.35kPa 24135m 14m/s 6.8m/s
21:00 ☾
1% 11°C 0.02mm 81% 0cm -26° 15°C 0mm 0.31kPa 24135m 13m/s 6m/s
22:00 ☾
1% 12°C 0.03mm 83% 0cm -36° 15°C 0.04mm 0.28kPa 24135m 13m/s 5.7m/s
23:00 ☾
2% 12°C 0.04mm 85% 0cm -43° 15°C 0.08mm 0.26kPa 24135m 13m/s 5.3m/s
Sat, Apr 18 Sunrise 05:42 Sunset 18:45
24:00 ☾
2% 12°C 0.05mm 86% 0cm -46° 15°C 0.13mm 0.23kPa 24135m 13m/s 4.9m/s
01:00 ☾
1% 13°C 0.14mm 89% 0cm -45° 15°C 0.73mm 0.18kPa 24135m 11m/s 4.2m/s
02:00 ☾
1% 13°C 0.24mm 92% 0cm -39° 15°C 1.3mm 0.13kPa 24135m 10m/s 3.5m/s
03:00 ☾
0% 14°C 0.33mm 95% 0cm -31° 15°C 1.9mm 0.08kPa 24135m 9.2m/s 2.8m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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