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Rule Morning Frost

Mount Fuji - Morning Frost - Japan

Fujinomiya, Shizuoka, Japan

Frost crystals on calm, cold mornings near sunrise

No opportunities right now
Here’s what usually blocks matches

No Morning Frost opportunities in the next 14 days

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Rule requirements (key thresholds)
Time Window · Sunrise -45m to +90m Frost Probability · ≥ 60.0% Wind Speed · ≤ 1.5m/s

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

Most common blockers (next 72 hours)
Frost Probability 100% failing
Time Window 88% failing
Wind Speed 57% failing

Currently

Real-time conditions
Soil Temperature10.6°C
Dew Point5.1°C (moderate dew point)
Wind Speed3.7m/s (calm conditions)
Cloud Cover100%

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

Japan's winter transforms its iconic landscapes into scenes of serene beauty that embody the aesthetic principle of wabi-sabi—finding beauty in impermanence and imperfection. This forecast tracks frost and freezing conditions across Japan's diverse winter photography destinations.

Winter photography opportunities across Japan:

  • Kyoto's snow-covered temples - Kinkaku-ji golden pavilion and Fushimi Inari shrine gates become ethereal under fresh snow
  • Hokkaido's frozen landscapes - The Blue Pond in Biei develops stunning ice patterns and frost-covered trees create otherworldly scenes
  • Mountain shrines - Nikko's ornate Toshogu shrine complex gains dramatic contrast under winter snow
  • Historic streets - Takayama's preserved Edo-period town appears suspended in time with frost-laden roofs
  • Ice formations - Mountain shrines and waterfalls develop intricate ice sculptures

The season runs from December through February across most of Japan, with Hokkaido remaining frozen well into March. Early morning shoots capture hoarfrost at its peak before the sun melts the delicate ice crystals. The contrast between traditional architecture and pristine snow creates compositions rich in cultural depth.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Asia/Tokyo
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Wed, Apr 8
16:000%3.3m/s
17:000%3m/s
18:000%2.3m/s
19:000%1.5m/s
20:000%1.1m/s
21:000%0.66m/s
22:000%0.21m/s
23:000%0.22m/s
Thu, Apr 9
24:000%0.38m/s
01:000%0.93m/s
02:000%1.2m/s
03:002.8%1.4m/s
04:003.3%1m/s
05:003.3%0.85m/s
06:003.2%0.89m/s
07:005%0.52m/s
08:003.5%2.2m/s
09:003.6%2.9m/s
10:000%3.2m/s
11:000%3.8m/s
12:000%4.7m/s
13:000%4.4m/s
14:000%4.3m/s
15:000%3.8m/s
16:000%3.7m/s
17:000%2.6m/s
18:000%1.7m/s
19:000%1.7m/s
20:000%1.1m/s
21:000%0.22m/s
22:000%0.06m/s
23:000%0.78m/s
Fri, Apr 10
24:000%0.49m/s
01:000%1.7m/s
02:000%0.89m/s
03:000%0.46m/s
04:000%0.81m/s
05:000%1.9m/s
06:000%0.81m/s
07:000%1.9m/s
08:000%1.6m/s
09:000%2.3m/s
10:000%1.5m/s
11:000%1.7m/s
12:000%1.4m/s
13:000%1.7m/s
14:000%1.6m/s
15:000%1.1m/s
16:000%0.48m/s
17:000%1.4m/s
18:000%0.79m/s
19:000%0.3m/s
20:000%1.1m/s
21:000%0.46m/s
22:000%0.71m/s
23:000%1.1m/s
Sat, Apr 11
24:000%1.2m/s
01:000%1.5m/s
02:000%1.9m/s
03:000%2m/s
04:000%2.5m/s
05:000%2.7m/s
06:000%2.6m/s
07:000%2.4m/s
08:000%1.7m/s
09:000%0.53m/s
10:000%0.31m/s
11:000%1m/s
12:000%2.2m/s
13:000%3.1m/s
14:000%2.9m/s
15:000%2.3m/s
16:000%1.3m/s
17:000%0.83m/s
18:000%0.42m/s
19:000%1.4m/s
20:000%1.9m/s
21:000%2.5m/s
22:000%2.1m/s
23:000%1.6m/s
Sun, Apr 12
24:000%1.2m/s
01:000%1.2m/s
02:000%1.1m/s
03:000%1.1m/s
04:000%1.9m/s
05:000%2.7m/s
06:000%3.6m/s
07:000%3.8m/s
08:000%4m/s
09:000%4.2m/s
10:000%3.7m/s
11:000%3.2m/s
12:000%2.7m/s
13:000%2.1m/s
14:000%1.5m/s
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Frost 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
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Thu, Apr 9 Sunrise 05:20 Sunset 18:12
16:00
5.1°C 11°C 13°C - 100% 0.62kPa
17:00
6.7°C 11°C 12°C - 100% 0.41kPa
18:00
7.5°C 11°C 10°C - 100% 0.22kPa
19:00
7.8°C 10°C 10°C - 100% 0.17kPa
20:00
8.3°C 10°C 9.3°C - 100% 0.08kPa
21:00
8.5°C 10°C 9°C - 100% 0.04kPa
22:00
8.3°C 10°C 8.8°C - 100% 0.04kPa
23:00
8.6°C 10°C 9°C - 100% 0.03kPa
Fri, Apr 10 Sunrise 05:20 Sunset 18:12
24:00
9.1°C 10°C 9.3°C - 100% 0.02kPa
01:00
9.3°C 9.9°C 9.4°C - 100% 0.01kPa
02:00
9.7°C 9.8°C 9.8°C - 100% 0.01kPa
03:00
10°C 9.9°C 10°C - 100% 0.01kPa
04:00
10°C 9.8°C 10°C - 100% 0.01kPa
05:00
11°C 9.8°C 11°C - 100% 0.01kPa
06:00
11°C 9.9°C 11°C - 100% 0.01kPa
07:00
11°C 9.9°C 11°C - 100% 0.01kPa
08:00
12°C 10°C 12°C - 100% 0.01kPa
09:00
12°C 10°C 12°C - 100% 0.01kPa
10:00
12°C 10°C 12°C - 100% 0.01kPa
11:00
12°C 10°C 12°C - 100% 0.01kPa
12:00
13°C 10°C 13°C - 100% 0.01kPa
13:00
13°C 11°C 13°C - 100% 0.01kPa
14:00
13°C 11°C 13°C - 100% 0.01kPa
15:00
13°C 11°C 13°C - 100% 0.01kPa
16:00
13°C 11°C 14°C - 100% 0.01kPa
17:00
13°C 11°C 14°C - 100% 0.01kPa
18:00
13°C 11°C 13°C - 100% 0.02kPa
19:00
13°C 11°C 13°C - 98% 0.01kPa
20:00
13°C 11°C 14°C - 44% 0.02kPa
21:00
12°C 11°C 13°C - 21% 0.06kPa
22:00
12°C 11°C 12°C - 20% 0.05kPa
23:00
12°C 11°C 12°C - 7% 0.07kPa
Sat, Apr 11 Sunrise 05:19 Sunset 18:13
24:00
11°C 11°C 12°C - 6% 0.09kPa
01:00
11°C 11°C 12°C - 5% 0.1kPa
02:00
10°C 11°C 12°C - 5% 0.11kPa
03:00
9.4°C 11°C 11°C - 96% 0.13kPa
04:00
8.8°C 11°C 11°C - 89% 0.15kPa
05:00
8.2°C 11°C 10°C - 5% 0.16kPa
06:00
8.5°C 10°C 11°C - 55% 0.17kPa
07:00
11°C 11°C 13°C - 2% 0.23kPa
08:00
11°C 11°C 16°C - 0% 0.55kPa
09:00
10°C 11°C 19°C - 0% 0.95kPa
10:00
9.2°C 12°C 21°C - 0% 1.3kPa
11:00
8.1°C 13°C 22°C - 0% 1.6kPa
12:00
7.3°C 14°C 23°C - 0% 1.8kPa
13:00
8°C 14°C 23°C - 0% 1.8kPa
14:00
9°C 15°C 23°C - 0% 1.6kPa
15:00
9.4°C 15°C 22°C - 0% 1.4kPa
16:00
10°C 16°C 21°C - 0% 1.3kPa
17:00
13°C 16°C 20°C - 0% 0.84kPa
18:00
10°C 16°C 16°C - 0% 0.54kPa
19:00
8°C 15°C 14°C - 0% 0.49kPa
20:00
6.5°C 15°C 12°C - 0% 0.48kPa
21:00
5.2°C 15°C 12°C - 1% 0.5kPa
22:00
5.5°C 3252°C 12°C - 34% 0.54kPa
23:00
5.8°C 6489°C 13°C - 67% 0.58kPa
Sun, Apr 12 Sunrise 05:18 Sunset 18:14
24:00
6°C 9726°C 14°C - 100% 0.63kPa
01:00
6.3°C 9726°C 14°C - 89% 0.67kPa
02:00
6.5°C 9726°C 15°C - 78% 0.72kPa
03:00
6.7°C 9726°C 15°C - 66% 0.77kPa
04:00
8°C 9726°C 16°C - 54% 0.7kPa
05:00
9.3°C 9726°C 16°C - 42% 0.63kPa
06:00
11°C 9726°C 16°C - 30% 0.56kPa
07:00
11°C 9726°C 16°C - 23% 0.53kPa
08:00
12°C 9726°C 17°C - 16% 0.51kPa
09:00
12°C 9726°C 17°C - 10% 0.48kPa
10:00
13°C 9726°C 16°C - 40% 0.42kPa
11:00
13°C 9726°C 16°C - 70% 0.36kPa
12:00
13°C 9726°C 16°C - 100% 0.3kPa
13:00
13°C 9726°C 16°C - 100% 0.29kPa
14:00
13°C 9726°C 15°C - 100% 0.27kPa
15:00
13°C 9726°C 15°C - 100% 0.25kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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