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Rule Morning Frost

Hakone - Morning Frost - Japan

Hakone, Kanagawa, 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 Temperature20.3°C
Dew Point17.8°C (high dew point)
Wind Speed0.5m/s (calm conditions)
Cloud Cover45%

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%1.2m/s
Wed, Jul 8
24:00✕0%1m/s
01:00✕0%0.72m/s
02:00✕0%0.65m/s
03:00✕0%0.55m/s
04:00✕0%0.95m/s
05:00✕0%1.1m/s
06:00✕0%0.98m/s
07:00✕0%1.6m/s
08:00✕0%1.6m/s
09:00✕0%1.8m/s
10:00✕0%2m/s
11:00✕0%2m/s
12:00✕0%1.7m/s
13:00✕0%1.6m/s
14:00✕0%1.9m/s
15:00✕0%2m/s
16:00✕0%1.5m/s
17:00✕0%1.3m/s
18:00✕0%1.1m/s
19:00✕0%1.1m/s
20:00✕0%0.93m/s
21:00✕0%0.62m/s
22:00✕0%0.63m/s
23:00✕0%0.5m/s
Thu, Jul 9
24:00✕0%0.56m/s
01:00✕0%0.76m/s
02:00✕0%0.71m/s
03:00✕0%0.92m/s
04:00✕0%1.1m/s
05:00✕0%0.9m/s
06:00✕0%0.49m/s
07:00✕0%0.52m/s
08:00✕0%1.1m/s
09:00✕0%1.5m/s
10:00✕0%2m/s
11:00✕0%2.2m/s
12:00✕0%2.5m/s
13:00✕0%2.7m/s
14:00✕0%2.9m/s
15:00✕0%2.6m/s
16:00✕0%2.4m/s
17:00✕0%1.8m/s
18:00✕0%1.8m/s
19:00✕0%1.6m/s
20:00✕0%1.2m/s
21:00✕0%0.98m/s
22:00✕0%1m/s
23:00✕0%1.2m/s
Fri, Jul 10
24:00✕0%1.3m/s
01:00✕0%1.5m/s
02:00✕0%1.5m/s
03:00✕0%1.4m/s
04:00✕0%1.2m/s
05:00✕0%1m/s
06:00✕0%0.85m/s
07:00✕0%0.61m/s
08:00✕0%1.1m/s
09:00✕0%1.2m/s
10:00✕0%1.9m/s
11:00✕0%2.4m/s
12:00✕0%2.9m/s
13:00✕0%3.1m/s
14:00✕0%3m/s
15:00✕0%2.4m/s
16:00✕0%2.2m/s
17:00✕0%1.9m/s
18:00✕0%1.9m/s
19:00✕0%1.8m/s
20:00✕0%1.8m/s
21:00✕0%2.1m/s
22:00✕0%1.7m/s
23:00✕0%1.6m/s
Sat, Jul 11
24:00✕0%1.6m/s
01:00✕0%1.2m/s
02:00✕0%1.9m/s
03:00✕0%1.6m/s
04:00✕0%1.8m/s
05:00✕0%2m/s
06:00✕0%2.2m/s
07:00✕0%2.6m/s
08:00✕0%2.9m/s
09:00✕0%3.2m/s
10:00✕0%3.3m/s
11:00✕0%3.3m/s
12:00✕0%3.3m/s
13:00✕0%3m/s
14:00✕0%2.8m/s
15:00✕0%2.5m/s
16:00✕0%2.3m/s
17:00✕0%2.1m/s
18:00✕0%1.9m/s
19:00✕0%2.1m/s
20:00✕0%2.3m/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 04:36 Sunset 19:01
23:00 ☾
18°C 20°C 19°C - 45% 0.14kPa
Thu, Jul 9 Sunrise 04:36 Sunset 19:01
24:00 ☾
18°C 20°C 19°C - 100% 0.13kPa
01:00 ☾
18°C 20°C 19°C - 100% 0.13kPa
02:00 ☾
18°C 19°C 19°C - 98% 0.13kPa
03:00 ☾
17°C 19°C 18°C - 95% 0.12kPa
04:00 ☾
17°C 19°C 18°C - 66% 0.11kPa
05:00 ☾
17°C 19°C 18°C - 85% 0.12kPa
06:00 ☾
18°C 19°C 20°C - 51% 0.25kPa
07:00 ☾
18°C 19°C 22°C - 41% 0.49kPa
08:00 ☾
19°C 20°C 23°C - 87% 0.73kPa
09:00
18°C 20°C 25°C - 23% 0.98kPa
10:00
18°C 21°C 26°C - 29% 1.2kPa
11:00
18°C 22°C 27°C - 34% 1.4kPa
12:00
19°C 23°C 27°C - 63% 1.4kPa
13:00
19°C 23°C 27°C - 38% 1.4kPa
14:00
19°C 24°C 27°C - 26% 1.3kPa
15:00
19°C 24°C 26°C - 37% 1.2kPa
16:00
19°C 24°C 26°C - 25% 1kPa
17:00
19°C 24°C 25°C - 7% 0.85kPa
18:00
19°C 24°C 23°C - 2% 0.62kPa
19:00
19°C 24°C 21°C - 0% 0.36kPa
20:00 ☾
19°C 23°C 21°C - 5% 0.31kPa
21:00 ☾
18°C 23°C 21°C - 4% 0.3kPa
22:00 ☾
18°C 22°C 20°C - 0% 0.29kPa
23:00 ☾
18°C 22°C 20°C - 0% 0.28kPa
Fri, Jul 10 Sunrise 04:37 Sunset 19:00
24:00 ☾
18°C 22°C 20°C - 0% 0.27kPa
01:00 ☾
18°C 21°C 20°C - 0% 0.24kPa
02:00 ☾
18°C 21°C 19°C - 4% 0.2kPa
03:00 ☾
18°C 21°C 19°C - 68% 0.16kPa
04:00 ☾
18°C 20°C 19°C - 38% 0.13kPa
05:00 ☾
18°C 20°C 19°C - 46% 0.13kPa
06:00 ☾
19°C 20°C 21°C - 6% 0.26kPa
07:00 ☾
19°C 20°C 23°C - 3% 0.51kPa
08:00 ☾
20°C 21°C 24°C - 6% 0.75kPa
09:00
20°C 22°C 26°C - 11% 0.99kPa
10:00
20°C 22°C 27°C - 9% 1.2kPa
11:00
20°C 23°C 28°C - 11% 1.4kPa
12:00
20°C 24°C 28°C - 24% 1.5kPa
13:00
20°C 24°C 28°C - 26% 1.4kPa
14:00
20°C 25°C 27°C - 18% 1.3kPa
15:00
20°C 25°C 27°C - 22% 1.2kPa
16:00
20°C 25°C 26°C - 54% 1kPa
17:00
19°C 25°C 25°C - 5% 0.86kPa
18:00
19°C 25°C 23°C - 0% 0.65kPa
19:00
19°C 24°C 22°C - 2% 0.41kPa
20:00 ☾
19°C 24°C 21°C - 3% 0.32kPa
21:00 ☾
19°C 23°C 20°C - 3% 0.28kPa
22:00 ☾
18°C 23°C 20°C - 5% 0.24kPa
23:00 ☾
19°C 23°C 20°C - 4% 0.23kPa
Sat, Jul 11 Sunrise 04:37 Sunset 19:00
24:00 ☾
19°C 22°C 20°C - 8% 0.21kPa
01:00 ☾
19°C 22°C 20°C - 100% 0.19kPa
02:00 ☾
19°C 21°C 20°C - 99% 0.15kPa
03:00 ☾
19°C 21°C 20°C - 100% 0.09kPa
04:00 ☾
19°C 22°C 22°C - 100% 0.41kPa
05:00 ☾
20°C 23°C 25°C - 100% 0.81kPa
06:00 ☾
19°C 23°C 27°C - 100% 1.3kPa
07:00 ☾
19°C 24°C 27°C - 100% 1.4kPa
08:00 ☾
19°C 24°C 27°C - 100% 1.4kPa
09:00
19°C 24°C 27°C - 100% 1.4kPa
10:00
19°C 24°C 26°C - 70% 1.1kPa
11:00
20°C 24°C 25°C - 39% 0.84kPa
12:00
20°C 24°C 23°C - 9% 0.61kPa
13:00
20°C 24°C 23°C - 39% 0.43kPa
14:00
20°C 23°C 22°C - 68% 0.27kPa
15:00
20°C 23°C 21°C - 98% 0.12kPa
16:00
20°C 23°C 21°C - 99% 0.11kPa
17:00
20°C 23°C 21°C - 99% 0.1kPa
18:00
20°C 22°C 21°C - 100% 0.08kPa
19:00
20°C 22°C 21°C - 100% 0.08kPa
20:00 ☾
20°C 22°C 21°C - 100% 0.07kPa
21:00 ☾
20°C 22°C 21°C - 100% 0.07kPa
22:00 ☾
20°C 22°C 21°C - 100% 0.07kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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