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Rule Morning Frost

Nara - Morning Frost - Japan

Nara, Nara, 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 24% failing

Currently

Real-time conditions
Frost Probability
0%
Soil Temperature25.1°C
Dew Point20.8°C (high dew point)
Wind Speed0.2m/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
Tue, Jul 7
22:00✕0%1.2m/s
23:00✕0%1.5m/s
Wed, Jul 8
24:00✕0%1.4m/s
01:00✕0%1.5m/s
02:00✕0%1.6m/s
03:00✕0%1.4m/s
04:00✕0%1.2m/s
05:00✕0%1.4m/s
06:00✕0%1.5m/s
07:00✕0%1.5m/s
08:00✕0%1.4m/s
09:00✕0%1.6m/s
10:00✕0%1.3m/s
11:00✕0%0.64m/s
12:00✕0%0.24m/s
13:00✕0%0.43m/s
14:00✕0%1.1m/s
15:00✕0%1.9m/s
16:00✕0%2.9m/s
17:00✕0%2.2m/s
18:00✕0%1.4m/s
19:00✕0%0.87m/s
20:00✕0%0.74m/s
21:00✕0%0.61m/s
22:00✕0%0.4m/s
23:00✕0%0.21m/s
Thu, Jul 9
24:00✕0%0.49m/s
01:00✕0%0.75m/s
02:00✕0%1.1m/s
03:00✕0%1.2m/s
04:00✕0%1.2m/s
05:00✕0%1.4m/s
06:00✕0%1.5m/s
07:00✕0%1.4m/s
08:00✕0%1.2m/s
09:00✕0%1m/s
10:00✕0%0.93m/s
11:00✕0%0.63m/s
12:00✕0%0.26m/s
13:00✕0%0.35m/s
14:00✕0%0.92m/s
15:00✕0%1.7m/s
16:00✕0%2.3m/s
17:00✕0%2.7m/s
18:00✕0%2.2m/s
19:00✕0%1.9m/s
20:00✕0%1.4m/s
21:00✕0%0.74m/s
22:00✕0%0.36m/s
23:00✕0%0.53m/s
Fri, Jul 10
24:00✕0%0.86m/s
01:00✕0%1.1m/s
02:00✕0%1.1m/s
03:00✕0%1.3m/s
04:00✕0%1.3m/s
05:00✕0%1.4m/s
06:00✕0%1.4m/s
07:00✕0%1.5m/s
08:00✕0%1.1m/s
09:00✕0%0.56m/s
10:00✕0%0.3m/s
11:00✕0%0.22m/s
12:00✕0%0.72m/s
13:00✕0%1.1m/s
14:00✕0%0.73m/s
15:00✕0%0.97m/s
16:00✕0%3m/s
17:00✕0%3.9m/s
18:00✕0%3.6m/s
19:00✕0%2.6m/s
20:00✕0%0.93m/s
21:00✕0%0.78m/s
22:00✕0%0.43m/s
23:00✕0%0.92m/s
Sat, Jul 11
24:00✕0%0.77m/s
01:00✕0%1.1m/s
02:00✕0%1.3m/s
03:00✕0%1.8m/s
04:00✕0%1.7m/s
05:00✕0%1.6m/s
06:00✕0%1.5m/s
07:00✕0%1.8m/s
08:00✕0%2.1m/s
09:00✕0%2.3m/s
10:00✕0%2m/s
11:00✕0%1.6m/s
12:00✕0%1.2m/s
13:00✕0%1.1m/s
14:00✕0%0.98m/s
15:00✕0%0.86m/s
16:00✕0%0.73m/s
17:00✕0%0.59m/s
18:00✕0%0.46m/s
19:00✕0%0.43m/s
20:00✕0%0.41m/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 04:50 Sunset 19:12
23:00 ☾
21°C 25°C 24°C - 100% 0.46kPa
Thu, Jul 9 Sunrise 04:50 Sunset 19:12
24:00 ☾
21°C 25°C 23°C - 100% 0.39kPa
01:00 ☾
21°C 24°C 23°C - 88% 0.38kPa
02:00 ☾
20°C 24°C 23°C - 86% 0.38kPa
03:00 ☾
20°C 24°C 23°C - 84% 0.37kPa
04:00 ☾
20°C 24°C 22°C - 80% 0.36kPa
05:00 ☾
20°C 23°C 22°C - 78% 0.37kPa
06:00 ☾
19°C 23°C 22°C - 76% 0.44kPa
07:00 ☾
19°C 23°C 23°C - 25% 0.6kPa
08:00 ☾
20°C 24°C 25°C - 15% 0.91kPa
09:00
20°C 25°C 27°C - 2% 1.3kPa
10:00
20°C 26°C 29°C - 0% 1.6kPa
11:00
20°C 28°C 30°C - 13% 1.9kPa
12:00
20°C 29°C 31°C - 25% 2.2kPa
13:00
20°C 30°C 32°C - 11% 2.5kPa
14:00
20°C 31°C 32°C - 6% 2.6kPa
15:00
20°C 32°C 32°C - 14% 2.4kPa
16:00
20°C 32°C 31°C - 15% 2kPa
17:00
21°C 31°C 29°C - 2% 1.5kPa
18:00
21°C 30°C 27°C - 5% 1.2kPa
19:00
21°C 29°C 26°C - 0% 0.96kPa
20:00 ☾
21°C 29°C 25°C - 0% 0.81kPa
21:00 ☾
21°C 28°C 25°C - 0% 0.72kPa
22:00 ☾
21°C 27°C 25°C - 0% 0.65kPa
23:00 ☾
21°C 26°C 24°C - 0% 0.59kPa
Fri, Jul 10 Sunrise 04:51 Sunset 19:12
24:00 ☾
20°C 26°C 24°C - 0% 0.54kPa
01:00 ☾
20°C 25°C 23°C - 5% 0.49kPa
02:00 ☾
20°C 25°C 23°C - 5% 0.46kPa
03:00 ☾
20°C 24°C 22°C - 24% 0.44kPa
04:00 ☾
19°C 24°C 22°C - 5% 0.43kPa
05:00 ☾
19°C 24°C 22°C - 5% 0.42kPa
06:00 ☾
19°C 23°C 22°C - 0% 0.51kPa
07:00 ☾
19°C 24°C 24°C - 0% 0.72kPa
08:00 ☾
19°C 24°C 25°C - 0% 1kPa
09:00
19°C 25°C 27°C - 0% 1.4kPa
10:00
19°C 27°C 29°C - 0% 1.8kPa
11:00
19°C 28°C 31°C - 0% 2.2kPa
12:00
19°C 30°C 32°C - 3% 2.6kPa
13:00
19°C 31°C 33°C - 31% 2.8kPa
14:00
19°C 32°C 33°C - 3% 3kPa
15:00
19°C 33°C 33°C - 2% 2.9kPa
16:00
20°C 33°C 32°C - 17% 2.5kPa
17:00
21°C 32°C 30°C - 13% 1.7kPa
18:00
21°C 31°C 28°C - 6% 1.4kPa
19:00
21°C 30°C 27°C - 5% 1.1kPa
20:00 ☾
21°C 29°C 27°C - 84% 1kPa
21:00 ☾
21°C 29°C 26°C - 51% 0.89kPa
22:00 ☾
21°C 28°C 25°C - 92% 0.79kPa
23:00 ☾
21°C 27°C 25°C - 100% 0.69kPa
Sat, Jul 11 Sunrise 04:51 Sunset 19:12
24:00 ☾
21°C 27°C 25°C - 100% 0.61kPa
01:00 ☾
21°C 26°C 24°C - 100% 0.55kPa
02:00 ☾
21°C 26°C 24°C - 100% 0.49kPa
03:00 ☾
20°C 25°C 23°C - 100% 0.45kPa
04:00 ☾
20°C 24°C 25°C - 100% 0.8kPa
05:00 ☾
20°C 23°C 27°C - 100% 1.2kPa
06:00 ☾
19°C 22°C 28°C - 100% 1.7kPa
07:00 ☾
19°C 23°C 29°C - 90% 1.8kPa
08:00 ☾
19°C 23°C 29°C - 80% 1.8kPa
09:00
19°C 23°C 29°C - 70% 1.8kPa
10:00
20°C 24°C 28°C - 80% 1.5kPa
11:00
21°C 24°C 27°C - 90% 1.1kPa
12:00
22°C 24°C 26°C - 100% 0.82kPa
13:00
22°C 24°C 25°C - 100% 0.57kPa
14:00
21°C 24°C 23°C - 100% 0.35kPa
15:00
21°C 23°C 22°C - 100% 0.17kPa
16:00
21°C 23°C 22°C - 100% 0.15kPa
17:00
21°C 23°C 22°C - 100% 0.14kPa
18:00
21°C 23°C 22°C - 100% 0.12kPa
19:00
21°C 23°C 21°C - 100% 0.1kPa
20:00 ☾
21°C 23°C 21°C - 100% 0.08kPa
21:00 ☾
20°C 22°C 21°C - 100% 0.06kPa
22:00 ☾
21°C 22°C 21°C - 100% 0.1kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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