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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 47% failing

Currently

Real-time conditions
Frost Probability
0%
Soil Temperature23.7°C
Dew Point21.8°C (high dew point)
Wind Speed1.6m/s (calm conditions)
Cloud Cover29%

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
Tue, Jul 7
22:00✕0%1.5m/s
23:00✕0%1.5m/s
Wed, Jul 8
24:00✕0%1.4m/s
01:00✕0%1.3m/s
02:00✕0%0.65m/s
03:00✕0%0.8m/s
04:00✕0%0.57m/s
05:00✕0%0.5m/s
06:00✕0%0.37m/s
07:00✕0%0.25m/s
08:00✕0%1.1m/s
09:00✕0%1.6m/s
10:00✕0%2.3m/s
11:00✕0%2.5m/s
12:00✕0%2.7m/s
13:00✕0%2.7m/s
14:00✕0%2.8m/s
15:00✕0%3.3m/s
16:00✕0%3.2m/s
17:00✕0%3.1m/s
18:00✕0%2.8m/s
19:00✕0%2.3m/s
20:00✕0%2.2m/s
21:00✕0%1.9m/s
22:00✕0%1.6m/s
23:00✕0%1.6m/s
Thu, Jul 9
24:00✕0%1.7m/s
01:00✕0%1.8m/s
02:00✕0%1.8m/s
03:00✕0%1.7m/s
04:00✕0%1.7m/s
05:00✕0%1.4m/s
06:00✕0%1.2m/s
07:00✕0%0.9m/s
08:00✕0%1.2m/s
09:00✕0%1.7m/s
10:00✕0%2.1m/s
11:00✕0%2.3m/s
12:00✕0%1.9m/s
13:00✕0%1.7m/s
14:00✕0%2m/s
15:00✕0%2.5m/s
16:00✕0%2.5m/s
17:00✕0%2.2m/s
18:00✕0%1.7m/s
19:00✕0%0.74m/s
20:00✕0%1.2m/s
21:00✕0%1.5m/s
22:00✕0%1.1m/s
23:00✕0%0.74m/s
Fri, Jul 10
24:00✕0%1m/s
01:00✕0%0.45m/s
02:00✕0%0.56m/s
03:00✕0%0.94m/s
04:00✕0%0.87m/s
05:00✕0%1.1m/s
06:00✕0%0.38m/s
07:00✕0%0.63m/s
08:00✕0%1m/s
09:00✕0%1.6m/s
10:00✕0%1.7m/s
11:00✕0%2.1m/s
12:00✕0%2.1m/s
13:00✕0%1.3m/s
14:00✕0%1.8m/s
15:00✕0%2.6m/s
16:00✕0%2.4m/s
17:00✕0%1.4m/s
18:00✕0%1m/s
19:00✕0%1.3m/s
20:00✕0%0.7m/s
21:00✕0%1.2m/s
22:00✕0%1m/s
23:00✕0%0.74m/s
Sat, Jul 11
24:00✕0%0.69m/s
01:00✕0%0.93m/s
02:00✕0%0.75m/s
03:00✕0%0.46m/s
04:00✕0%1.2m/s
05:00✕0%1.9m/s
06:00✕0%2.6m/s
07:00✕0%2.5m/s
08:00✕0%2.3m/s
09:00✕0%2.2m/s
10:00✕0%2.1m/s
11:00✕0%2m/s
12:00✕0%1.9m/s
13:00✕0%1.6m/s
14:00✕0%1.2m/s
15:00✕0%0.92m/s
16:00✕0%0.85m/s
17:00✕0%0.78m/s
18:00✕0%0.71m/s
19:00✕0%0.57m/s
20:00✕0%0.43m/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
Wed, Jul 8 Sunrise 05:05 Sunset 19:25
23:00 ☾
22°C 24°C 23°C - 29% 0.25kPa
Thu, Jul 9 Sunrise 05:05 Sunset 19:25
24:00 ☾
22°C 24°C 23°C - 21% 0.19kPa
01:00 ☾
21°C 23°C 22°C - 21% 0.17kPa
02:00 ☾
21°C 23°C 22°C - 6% 0.17kPa
03:00 ☾
21°C 23°C 22°C - 3% 0.17kPa
04:00 ☾
21°C 23°C 22°C - 2% 0.17kPa
05:00 ☾
21°C 23°C 22°C - 1% 0.17kPa
06:00 ☾
21°C 23°C 22°C - 4% 0.21kPa
07:00 ☾
21°C 23°C 23°C - 17% 0.36kPa
08:00 ☾
21°C 23°C 25°C - 49% 0.54kPa
09:00
21°C 23°C 25°C - 57% 0.66kPa
10:00
21°C 23°C 25°C - 60% 0.69kPa
11:00
21°C 23°C 25°C - 42% 0.68kPa
12:00
22°C 23°C 25°C - 34% 0.64kPa
13:00
22°C 23°C 26°C - 11% 0.76kPa
14:00
22°C 24°C 27°C - 8% 0.93kPa
15:00
22°C 24°C 27°C - 14% 0.9kPa
16:00
22°C 24°C 26°C - 10% 0.77kPa
17:00
22°C 24°C 26°C - 12% 0.7kPa
18:00
22°C 24°C 26°C - 4% 0.62kPa
19:00
22°C 24°C 25°C - 0% 0.43kPa
20:00 ☾
21°C 24°C 24°C - 11% 0.39kPa
21:00 ☾
21°C 24°C 23°C - 52% 0.4kPa
22:00 ☾
21°C 24°C 23°C - 99% 0.44kPa
23:00 ☾
20°C 23°C 24°C - 93% 0.55kPa
Fri, Jul 10 Sunrise 05:06 Sunset 19:25
24:00 ☾
20°C 23°C 24°C - 34% 0.55kPa
01:00 ☾
20°C 23°C 23°C - 0% 0.41kPa
02:00 ☾
20°C 23°C 22°C - 4% 0.31kPa
03:00 ☾
20°C 23°C 22°C - 5% 0.28kPa
04:00 ☾
20°C 23°C 22°C - 5% 0.26kPa
05:00 ☾
20°C 23°C 22°C - 1% 0.23kPa
06:00 ☾
21°C 22°C 22°C - 61% 0.26kPa
07:00 ☾
21°C 22°C 23°C - 3% 0.39kPa
08:00 ☾
21°C 23°C 24°C - 25% 0.51kPa
09:00
21°C 23°C 25°C - 12% 0.63kPa
10:00
21°C 23°C 25°C - 38% 0.75kPa
11:00
21°C 23°C 26°C - 6% 0.82kPa
12:00
21°C 23°C 26°C - 8% 0.9kPa
13:00
21°C 23°C 27°C - 8% 1kPa
14:00
21°C 24°C 27°C - 95% 1.1kPa
15:00
21°C 24°C 27°C - 70% 1.1kPa
16:00
21°C 24°C 26°C - 45% 0.94kPa
17:00
21°C 24°C 26°C - 100% 0.88kPa
18:00
22°C 24°C 26°C - 100% 0.66kPa
19:00
22°C 24°C 25°C - 100% 0.44kPa
20:00 ☾
22°C 24°C 24°C - 100% 0.31kPa
21:00 ☾
22°C 24°C 24°C - 100% 0.27kPa
22:00 ☾
22°C 24°C 24°C - 100% 0.25kPa
23:00 ☾
22°C 24°C 23°C - 100% 0.24kPa
Sat, Jul 11 Sunrise 05:06 Sunset 19:25
24:00 ☾
22°C 24°C 23°C - 100% 0.22kPa
01:00 ☾
22°C 23°C 23°C - 100% 0.22kPa
02:00 ☾
22°C 23°C 23°C - 100% 0.22kPa
03:00 ☾
22°C 23°C 23°C - 100% 0.2kPa
04:00 ☾
22°C 23°C 25°C - 100% 0.58kPa
05:00 ☾
22°C 23°C 27°C - 100% 1.1kPa
06:00 ☾
21°C 24°C 30°C - 100% 1.7kPa
07:00 ☾
21°C 24°C 30°C - 71% 1.7kPa
08:00 ☾
21°C 24°C 30°C - 43% 1.7kPa
09:00
21°C 24°C 30°C - 15% 1.6kPa
10:00
22°C 24°C 28°C - 38% 1.3kPa
11:00
22°C 25°C 27°C - 61% 0.95kPa
12:00
22°C 25°C 26°C - 85% 0.66kPa
13:00
22°C 25°C 25°C - 90% 0.49kPa
14:00
21°C 24°C 24°C - 95% 0.35kPa
15:00
21°C 24°C 22°C - 100% 0.22kPa
16:00
21°C 24°C 22°C - 100% 0.19kPa
17:00
21°C 24°C 22°C - 100% 0.17kPa
18:00
21°C 24°C 22°C - 100% 0.15kPa
19:00
21°C 23°C 22°C - 100% 0.14kPa
20:00 ☾
21°C 23°C 22°C - 100% 0.13kPa
21:00 ☾
21°C 23°C 22°C - 100% 0.11kPa
22:00 ☾
22°C 23°C 22°C - 100% 0.13kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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