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Rule Morning Frost

Miyajima - Morning Frost - Japan

Miyajima, Hiroshima, 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)
Time Window 100% failing
Frost Probability 100% failing
Wind Speed 32% failing

Currently

Real-time conditions
Frost Probability
0%
Soil Temperature19.1°C
Dew Point17.3°C (high dew point)
Wind Speed0.6m/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
Sat, May 23
22:00✕0%2m/s
23:00✕0%1.6m/s
Sun, May 24
24:00✕0%0.93m/s
01:00✕0%1.7m/s
02:00✕0%1.9m/s
03:00✕0%1.8m/s
04:00✕0%2m/s
05:00✕0%1.6m/s
06:00✕0%1.8m/s
07:00✕0%2m/s
08:00✕0%1.7m/s
09:00✕0%1.2m/s
10:00✕0%1.2m/s
11:00✕0%1.2m/s
12:00✕0%1.3m/s
13:00✕0%1.2m/s
14:00✕0%1.5m/s
15:00✕0%1.4m/s
16:00✕0%1.2m/s
17:00✕0%1.5m/s
18:00✕0%1.4m/s
19:00✕0%0.88m/s
20:00✕0%0.94m/s
21:00✕0%0.9m/s
22:00✕0%0.62m/s
23:00✕0%0.23m/s
Mon, May 25
24:00✕0%0.65m/s
01:00✕0%1.1m/s
02:00✕0%0.5m/s
03:00✕0%0.33m/s
04:00✕0%0.04m/s
05:00✕0%0.75m/s
06:00✕0%0.62m/s
07:00✕0%0.6m/s
08:00✕0%0.35m/s
09:00✕0%1.7m/s
10:00✕0%2.1m/s
11:00✕0%1.8m/s
12:00✕0%2m/s
13:00✕0%2.5m/s
14:00✕0%2.7m/s
15:00✕0%2.6m/s
16:00✕0%2.7m/s
17:00✕0%2.2m/s
18:00✕0%1.4m/s
19:00✕0%1.4m/s
20:00✕0%1.5m/s
21:00✕0%1.8m/s
22:00✕0%2m/s
23:00✕0%1.9m/s
Tue, May 26
24:00✕0%1.8m/s
01:00✕0%1.5m/s
02:00✕0%1.5m/s
03:00✕0%1.5m/s
04:00✕0%1.1m/s
05:00✕0%0.84m/s
06:00✕0%0.48m/s
07:00✕0%0.42m/s
08:00✕0%0.7m/s
09:00✕0%1.1m/s
10:00✕0%2.2m/s
11:00✕0%2.9m/s
12:00✕0%2m/s
13:00✕0%1.1m/s
14:00✕0%2.1m/s
15:00✕0%1.8m/s
16:00✕0%1.3m/s
17:00✕0%1m/s
18:00✕0%1.7m/s
19:00✕0%1.2m/s
20:00✕0%1.2m/s
21:00✕0%1.1m/s
22:00✕0%1.5m/s
23:00✕0%1.6m/s
Wed, May 27
24:00✕0%1.3m/s
01:00✕0%1.5m/s
02:00✕0%1.8m/s
03:00✕0%0.58m/s
04:00✕0%0.77m/s
05:00✕0%0.97m/s
06:00✕0%1.2m/s
07:00✕0%1.1m/s
08:00✕0%1.1m/s
09:00✕0%1.1m/s
10:00✕0%0.98m/s
11:00✕0%0.9m/s
12:00✕0%0.82m/s
13:00✕0%0.71m/s
14:00✕0%0.61m/s
15:00✕0%0.5m/s
16:00✕0%0.56m/s
17:00✕0%0.62m/s
18:00✕0%0.67m/s
19:00✕0%0.66m/s
20:00✕0%0.65m/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
Sun, May 24 Sunrise 05:03 Sunset 19:11
22:00 ☾
17°C 19°C 19°C - 100% 0.27kPa
23:00 ☾
17°C 19°C 19°C - 100% 0.27kPa
Mon, May 25 Sunrise 05:03 Sunset 19:11
24:00 ☾
17°C 19°C 19°C - 100% 0.27kPa
01:00 ☾
17°C 19°C 19°C - 98% 0.27kPa
02:00 ☾
17°C 19°C 19°C - 100% 0.24kPa
03:00 ☾
17°C 19°C 19°C - 100% 0.23kPa
04:00 ☾
17°C 19°C 18°C - 94% 0.21kPa
05:00 ☾
17°C 19°C 18°C - 95% 0.21kPa
06:00 ☾
17°C 19°C 19°C - 30% 0.2kPa
07:00 ☾
17°C 19°C 20°C - 52% 0.3kPa
08:00 ☾
18°C 19°C 20°C - 28% 0.4kPa
09:00
18°C 19°C 21°C - 54% 0.5kPa
10:00
18°C 19°C 21°C - 61% 0.51kPa
11:00
18°C 19°C 22°C - 95% 0.57kPa
12:00
18°C 20°C 23°C - 16% 0.68kPa
13:00
18°C 20°C 23°C - 14% 0.72kPa
14:00
18°C 20°C 23°C - 22% 0.71kPa
15:00
18°C 20°C 23°C - 13% 0.71kPa
16:00
18°C 20°C 22°C - 16% 0.63kPa
17:00
18°C 21°C 22°C - 88% 0.56kPa
18:00
18°C 21°C 21°C - 98% 0.41kPa
19:00
18°C 20°C 20°C - 100% 0.22kPa
20:00 ☾
18°C 20°C 19°C - 100% 0.17kPa
21:00 ☾
18°C 20°C 19°C - 100% 0.17kPa
22:00 ☾
17°C 20°C 19°C - 100% 0.19kPa
23:00 ☾
17°C 20°C 18°C - 100% 0.2kPa
Tue, May 26 Sunrise 05:03 Sunset 19:12
24:00 ☾
17°C 20°C 18°C - 79% 0.16kPa
01:00 ☾
17°C 20°C 18°C - 92% 0.13kPa
02:00 ☾
17°C 19°C 18°C - 95% 0.13kPa
03:00 ☾
17°C 19°C 18°C - 100% 0.13kPa
04:00 ☾
17°C 19°C 18°C - 100% 0.13kPa
05:00 ☾
16°C 19°C 17°C - 100% 0.13kPa
06:00 ☾
17°C 19°C 18°C - 100% 0.18kPa
07:00 ☾
17°C 19°C 19°C - 100% 0.27kPa
08:00 ☾
17°C 19°C 20°C - 70% 0.39kPa
09:00
18°C 19°C 21°C - 100% 0.43kPa
10:00
17°C 19°C 21°C - 100% 0.54kPa
11:00
18°C 19°C 22°C - 100% 0.55kPa
12:00
18°C 20°C 21°C - 100% 0.53kPa
13:00
18°C 20°C 22°C - 100% 0.69kPa
14:00
18°C 20°C 23°C - 100% 0.72kPa
15:00
18°C 20°C 22°C - 100% 0.68kPa
16:00
18°C 20°C 21°C - 100% 0.5kPa
17:00
18°C 20°C 21°C - 100% 0.49kPa
18:00
18°C 20°C 21°C - 100% 0.44kPa
19:00
18°C 20°C 20°C - 100% 0.33kPa
20:00 ☾
18°C 20°C 20°C - 100% 0.32kPa
21:00 ☾
17°C 20°C 20°C - 100% 0.33kPa
22:00 ☾
18°C 20°C 19°C - 100% 0.25kPa
23:00 ☾
18°C 20°C 19°C - 100% 0.14kPa
Wed, May 27 Sunrise 05:02 Sunset 19:13
24:00 ☾
18°C 20°C 19°C - 100% 0.13kPa
01:00 ☾
18°C 20°C 19°C - 100% 0.12kPa
02:00 ☾
18°C 20°C 18°C - 100% 0.1kPa
03:00 ☾
18°C 19°C 18°C - 100% 0.09kPa
04:00 ☾
18°C 19°C 19°C - 100% 0.1kPa
05:00 ☾
18°C 19°C 19°C - 99% 0.11kPa
06:00 ☾
18°C 18°C 19°C - 99% 0.12kPa
07:00 ☾
18°C 18°C 19°C - 99% 0.13kPa
08:00 ☾
18°C 18°C 19°C - 100% 0.14kPa
09:00
18°C 18°C 19°C - 100% 0.15kPa
10:00
18°C 18°C 19°C - 100% 0.13kPa
11:00
18°C 18°C 19°C - 100% 0.11kPa
12:00
18°C 18°C 18°C - 100% 0.09kPa
13:00
18°C 18°C 18°C - 100% 0.08kPa
14:00
18°C 18°C 18°C - 100% 0.07kPa
15:00
18°C 18°C 18°C - 100% 0.07kPa
16:00
18°C 18°C 18°C - 100% 0.07kPa
17:00
18°C 18°C 18°C - 100% 0.07kPa
18:00
18°C 18°C 18°C - 100% 0.07kPa
19:00
18°C 18°C 18°C - 100% 0.07kPa
20:00 ☾
18°C 18°C 18°C - 100% 0.07kPa
21:00 ☾
18°C 18°C 19°C - 100% 0.06kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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