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Rule Morning Frost

Nikko - Morning Frost - Japan

Nikkō, Tochigi, 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 65% failing

Currently

Real-time conditions
Frost Probability
0%
Soil Temperature16.3°C
Dew Point14.6°C (moderate dew point)
Wind Speed2.0m/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%1m/s
23:00✕0%1.1m/s
Wed, Jul 8
24:00✕0%1m/s
01:00✕0%1.2m/s
02:00✕0%1.5m/s
03:00✕0%1.4m/s
04:00✕0%1.5m/s
05:00✕0%1.3m/s
06:00✕0%0.86m/s
07:00✕0%0.73m/s
08:00✕0%1.6m/s
09:00✕0%1.9m/s
10:00✕0%2.1m/s
11:00✕0%2.2m/s
12:00✕0%2m/s
13:00✕0%2m/s
14:00✕0%1.9m/s
15:00✕0%1.6m/s
16:00✕0%1.1m/s
17:00✕0%0.99m/s
18:00✕0%1m/s
19:00✕0%1m/s
20:00✕0%1.6m/s
21:00✕0%1.7m/s
22:00✕0%2m/s
23:00✕0%2m/s
Thu, Jul 9
24:00✕0%1.9m/s
01:00✕0%2.1m/s
02:00✕0%2.1m/s
03:00✕0%1.8m/s
04:00✕0%1.7m/s
05:00✕0%1.7m/s
06:00✕0%0.68m/s
07:00✕0%0.4m/s
08:00✕0%1.1m/s
09:00✕0%1.7m/s
10:00✕0%2.4m/s
11:00✕0%2.8m/s
12:00✕0%3m/s
13:00✕0%2.6m/s
14:00✕0%2.5m/s
15:00✕0%2m/s
16:00✕0%1.5m/s
17:00✕0%1.4m/s
18:00✕0%1.1m/s
19:00✕0%1.2m/s
20:00✕0%0.97m/s
21:00✕0%0.87m/s
22:00✕0%1.5m/s
23:00✕0%2m/s
Fri, Jul 10
24:00✕0%2m/s
01:00✕0%2m/s
02:00✕0%2.1m/s
03:00✕0%2m/s
04:00✕0%1.9m/s
05:00✕0%1.8m/s
06:00✕0%0.85m/s
07:00✕0%0.49m/s
08:00✕0%1.4m/s
09:00✕0%1.8m/s
10:00✕0%2.4m/s
11:00✕0%2.8m/s
12:00✕0%3m/s
13:00✕0%3.2m/s
14:00✕0%2.7m/s
15:00✕0%2.1m/s
16:00✕0%1.8m/s
17:00✕0%1.5m/s
18:00✕0%1.5m/s
19:00✕0%1m/s
20:00✕0%1.1m/s
21:00✕0%1.5m/s
22:00✕0%1.9m/s
23:00✕0%1.8m/s
Sat, Jul 11
24:00✕0%1.8m/s
01:00✕0%1.6m/s
02:00✕0%1.4m/s
03:00✕0%1.3m/s
04:00✕0%1.4m/s
05:00✕0%1.5m/s
06:00✕0%1.5m/s
07:00✕0%1.2m/s
08:00✕0%0.91m/s
09:00✕0%0.6m/s
10:00✕0%0.75m/s
11:00✕0%0.91m/s
12:00✕0%1.1m/s
13:00✕0%1.2m/s
14:00✕0%1.4m/s
15:00✕0%1.5m/s
16:00✕0%1.6m/s
17:00✕0%1.6m/s
18:00✕0%1.7m/s
19:00✕0%1.7m/s
20:00✕0%1.7m/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 04:29 Sunset 19:03
23:00 ☾
15°C 16°C 15°C - 100% 0.06kPa
Thu, Jul 9 Sunrise 04:29 Sunset 19:03
24:00 ☾
14°C 16°C 15°C - 100% 0.08kPa
01:00 ☾
14°C 16°C 15°C - 99% 0.09kPa
02:00 ☾
14°C 16°C 15°C - 95% 0.1kPa
03:00 ☾
13°C 16°C 15°C - 99% 0.14kPa
04:00 ☾
13°C 16°C 15°C - 86% 0.18kPa
05:00 ☾
13°C 16°C 15°C - 99% 0.22kPa
06:00 ☾
14°C 16°C 17°C - 98% 0.32kPa
07:00 ☾
15°C 16°C 19°C - 95% 0.5kPa
08:00 ☾
15°C 16°C 21°C - 100% 0.7kPa
09:00
16°C 16°C 22°C - 71% 0.88kPa
10:00
16°C 17°C 23°C - 95% 1.1kPa
11:00
17°C 17°C 24°C - 100% 1.1kPa
12:00
17°C 17°C 24°C - 100% 0.99kPa
13:00
18°C 18°C 23°C - 100% 0.84kPa
14:00
18°C 18°C 23°C - 100% 0.69kPa
15:00
18°C 18°C 22°C - 98% 0.53kPa
16:00
18°C 18°C 21°C - 94% 0.47kPa
17:00
18°C 18°C 21°C - 80% 0.4kPa
18:00
18°C 18°C 21°C - 92% 0.35kPa
19:00
17°C 19°C 19°C - 96% 0.27kPa
20:00 ☾
17°C 18°C 18°C - 21% 0.19kPa
21:00 ☾
16°C 18°C 17°C - 6% 0.09kPa
22:00 ☾
16°C 18°C 16°C - 0% 0.09kPa
23:00 ☾
15°C 18°C 16°C - 5% 0.11kPa
Fri, Jul 10 Sunrise 04:30 Sunset 19:02
24:00 ☾
15°C 18°C 16°C - 0% 0.14kPa
01:00 ☾
15°C 18°C 16°C - 0% 0.16kPa
02:00 ☾
14°C 17°C 16°C - 0% 0.17kPa
03:00 ☾
14°C 17°C 16°C - 0% 0.18kPa
04:00 ☾
14°C 17°C 16°C - 0% 0.21kPa
05:00 ☾
14°C 17°C 16°C - 5% 0.24kPa
06:00 ☾
16°C 17°C 19°C - 5% 0.4kPa
07:00 ☾
16°C 17°C 21°C - 5% 0.67kPa
08:00 ☾
16°C 17°C 23°C - 5% 0.88kPa
09:00
17°C 18°C 24°C - 5% 1.1kPa
10:00
17°C 18°C 25°C - 5% 1.3kPa
11:00
17°C 19°C 26°C - 8% 1.4kPa
12:00
18°C 19°C 26°C - 27% 1.3kPa
13:00
19°C 19°C 26°C - 55% 1.2kPa
14:00
19°C 20°C 25°C - 57% 0.89kPa
15:00
19°C 20°C 24°C - 52% 0.75kPa
16:00
19°C 20°C 24°C - 67% 0.74kPa
17:00
19°C 20°C 23°C - 71% 0.51kPa
18:00
19°C 20°C 21°C - 44% 0.33kPa
19:00
17°C 20°C 19°C - 18% 0.23kPa
20:00 ☾
16°C 20°C 18°C - 11% 0.21kPa
21:00 ☾
16°C 20°C 17°C - 5% 0.2kPa
22:00 ☾
15°C 19°C 17°C - 6% 0.21kPa
23:00 ☾
15°C 19°C 17°C - 5% 0.22kPa
Sat, Jul 11 Sunrise 04:31 Sunset 19:02
24:00 ☾
15°C 19°C 17°C - 8% 0.22kPa
01:00 ☾
15°C 19°C 17°C - 34% 0.23kPa
02:00 ☾
15°C 19°C 17°C - 100% 0.24kPa
03:00 ☾
14°C 18°C 17°C - 29% 0.27kPa
04:00 ☾
16°C 19°C 19°C - 53% 0.42kPa
05:00 ☾
18°C 19°C 22°C - 76% 0.61kPa
06:00 ☾
19°C 19°C 25°C - 100% 0.86kPa
07:00 ☾
20°C 19°C 23°C - 100% 0.62kPa
08:00 ☾
20°C 19°C 22°C - 100% 0.41kPa
09:00
20°C 19°C 21°C - 100% 0.22kPa
10:00
19°C 19°C 21°C - 100% 0.19kPa
11:00
19°C 19°C 20°C - 100% 0.17kPa
12:00
18°C 19°C 19°C - 100% 0.14kPa
13:00
18°C 19°C 19°C - 100% 0.14kPa
14:00
17°C 19°C 18°C - 100% 0.14kPa
15:00
17°C 19°C 18°C - 100% 0.14kPa
16:00
16°C 18°C 17°C - 100% 0.14kPa
17:00
16°C 18°C 17°C - 100% 0.14kPa
18:00
16°C 18°C 17°C - 100% 0.15kPa
19:00
15°C 18°C 17°C - 82% 0.16kPa
20:00 ☾
15°C 18°C 16°C - 64% 0.16kPa
21:00 ☾
15°C 18°C 16°C - 47% 0.17kPa
22:00 ☾
15°C 18°C 17°C - 64% 0.18kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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