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Rule Morning Frost

Kamakura - Morning Frost - Japan

Kamakura, 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 96% failing

Currently

Real-time conditions
Frost Probability
0%
Soil Temperature9725.9°C
Dew Point20.2°C (high dew point)
Wind Speed2.0m/s (calm conditions)
Cloud Cover94%

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%3.3m/s
23:00✕0%2.8m/s
Wed, Jul 8
24:00✕0%2.6m/s
01:00✕0%2.2m/s
02:00✕0%1.8m/s
03:00✕0%2m/s
04:00✕0%2.5m/s
05:00✕0%2.9m/s
06:00✕0%2.6m/s
07:00✕0%2.7m/s
08:00✕0%2.4m/s
09:00✕0%2.5m/s
10:00✕0%2.3m/s
11:00✕0%1.4m/s
12:00✕0%1.3m/s
13:00✕0%2.1m/s
14:00✕0%3.3m/s
15:00✕0%3.9m/s
16:00✕0%3.7m/s
17:00✕0%3.4m/s
18:00✕0%3.5m/s
19:00✕0%3.8m/s
20:00✕0%3.6m/s
21:00✕0%3.3m/s
22:00✕0%3m/s
23:00✕0%2m/s
Thu, Jul 9
24:00✕0%2.1m/s
01:00✕0%1.7m/s
02:00✕0%1.6m/s
03:00✕0%1.9m/s
04:00✕0%1.7m/s
05:00✕0%1.5m/s
06:00✕0%1m/s
07:00✕0%1.3m/s
08:00✕0%1.8m/s
09:00✕0%2.6m/s
10:00✕0%2.9m/s
11:00✕0%3.3m/s
12:00✕0%3.6m/s
13:00✕0%4.2m/s
14:00✕0%4.9m/s
15:00✕0%5.1m/s
16:00✕0%5.3m/s
17:00✕0%4.9m/s
18:00✕0%5.1m/s
19:00✕0%4.9m/s
20:00✕0%4.7m/s
21:00✕0%4.3m/s
22:00✕0%4.1m/s
23:00✕0%4m/s
Fri, Jul 10
24:00✕0%4m/s
01:00✕0%4.3m/s
02:00✕0%4.4m/s
03:00✕0%4.2m/s
04:00✕0%4m/s
05:00✕0%3.5m/s
06:00✕0%3.6m/s
07:00✕0%3.7m/s
08:00✕0%4m/s
09:00✕0%3.9m/s
10:00✕0%4m/s
11:00✕0%4.5m/s
12:00✕0%5.2m/s
13:00✕0%5.7m/s
14:00✕0%6.4m/s
15:00✕0%6.6m/s
16:00✕0%6.8m/s
17:00✕0%6.9m/s
18:00✕0%6.9m/s
19:00✕0%7.1m/s
20:00✕0%6.3m/s
21:00✕0%6.3m/s
22:00✕0%5.9m/s
23:00✕0%5.5m/s
Sat, Jul 11
24:00✕0%5.3m/s
01:00✕0%5m/s
02:00✕0%5m/s
03:00✕0%4.6m/s
04:00✕0%5m/s
05:00✕0%5.4m/s
06:00✕0%5.8m/s
07:00✕0%6.4m/s
08:00✕0%7m/s
09:00✕0%7.6m/s
10:00✕0%7.2m/s
11:00✕0%6.8m/s
12:00✕0%6.4m/s
13:00✕0%5.8m/s
14:00✕0%5.2m/s
15:00✕0%4.6m/s
16:00✕0%3.6m/s
17:00✕0%2.7m/s
18:00✕0%1.8m/s
19:00✕0%1.9m/s
20:00✕0%2m/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 04:34 Sunset 18:59
23:00 ☾
20°C 9726°C 23°C - 94% 0.51kPa
Thu, Jul 9 Sunrise 04:34 Sunset 18:59
24:00 ☾
20°C 9726°C 23°C - 100% 0.51kPa
01:00 ☾
20°C 9726°C 23°C - 100% 0.51kPa
02:00 ☾
20°C 9726°C 23°C - 100% 0.51kPa
03:00 ☾
20°C 9726°C 23°C - 98% 0.5kPa
04:00 ☾
20°C 9726°C 23°C - 88% 0.5kPa
05:00 ☾
20°C 9726°C 23°C - 100% 0.5kPa
06:00 ☾
20°C 9726°C 23°C - 30% 0.54kPa
07:00 ☾
20°C 9726°C 24°C - 9% 0.57kPa
08:00 ☾
20°C 9726°C 24°C - 100% 0.59kPa
09:00
20°C 9726°C 24°C - 79% 0.59kPa
10:00
20°C 9726°C 24°C - 21% 0.62kPa
11:00
21°C 9726°C 24°C - 68% 0.66kPa
12:00
20°C 9726°C 25°C - 58% 0.71kPa
13:00
20°C 9726°C 25°C - 21% 0.76kPa
14:00
21°C 9726°C 25°C - 24% 0.78kPa
15:00
21°C 9726°C 25°C - 77% 0.76kPa
16:00
21°C 9726°C 25°C - 21% 0.71kPa
17:00
21°C 9726°C 25°C - 5% 0.67kPa
18:00
21°C 9726°C 25°C - 0% 0.62kPa
19:00 ☾
21°C 9726°C 25°C - 0% 0.57kPa
20:00 ☾
21°C 9726°C 24°C - 2% 0.52kPa
21:00 ☾
21°C 9726°C 24°C - 5% 0.5kPa
22:00 ☾
22°C 9726°C 24°C - 0% 0.46kPa
23:00 ☾
22°C 9726°C 24°C - 0% 0.44kPa
Fri, Jul 10 Sunrise 04:34 Sunset 18:59
24:00 ☾
22°C 9726°C 24°C - 5% 0.41kPa
01:00 ☾
22°C 9726°C 24°C - 4% 0.39kPa
02:00 ☾
22°C 9726°C 24°C - 0% 0.38kPa
03:00 ☾
22°C 9726°C 24°C - 5% 0.37kPa
04:00 ☾
22°C 9726°C 24°C - 34% 0.37kPa
05:00 ☾
21°C 9726°C 24°C - 14% 0.37kPa
06:00 ☾
21°C 9726°C 24°C - 84% 0.4kPa
07:00 ☾
21°C 9726°C 24°C - 89% 0.45kPa
08:00 ☾
21°C 9726°C 24°C - 65% 0.5kPa
09:00
21°C 9726°C 24°C - 17% 0.54kPa
10:00
21°C 9726°C 25°C - 53% 0.58kPa
11:00
21°C 9726°C 25°C - 20% 0.61kPa
12:00
21°C 9726°C 25°C - 1% 0.62kPa
13:00
22°C 9726°C 25°C - 0% 0.62kPa
14:00
22°C 9726°C 25°C - 0% 0.61kPa
15:00
22°C 9726°C 25°C - 0% 0.59kPa
16:00
22°C 9726°C 25°C - 8% 0.57kPa
17:00
22°C 9726°C 25°C - 80% 0.56kPa
18:00
22°C 9726°C 25°C - 47% 0.54kPa
19:00 ☾
22°C 9726°C 25°C - 0% 0.5kPa
20:00 ☾
22°C 9726°C 25°C - 0% 0.46kPa
21:00 ☾
22°C 9726°C 25°C - 0% 0.42kPa
22:00 ☾
22°C 9726°C 24°C - 2% 0.39kPa
23:00 ☾
22°C 9726°C 24°C - 5% 0.36kPa
Sat, Jul 11 Sunrise 04:35 Sunset 18:58
24:00 ☾
22°C 9726°C 24°C - 5% 0.33kPa
01:00 ☾
22°C 9726°C 24°C - 25% 0.3kPa
02:00 ☾
22°C 9726°C 24°C - 100% 0.29kPa
03:00 ☾
22°C 9726°C 24°C - 100% 0.31kPa
04:00 ☾
22°C 6494°C 26°C - 100% 0.71kPa
05:00 ☾
21°C 3263°C 27°C - 100% 1.2kPa
06:00 ☾
20°C 32°C 29°C - 100% 1.8kPa
07:00 ☾
20°C 32°C 29°C - 100% 1.7kPa
08:00 ☾
20°C 32°C 29°C - 100% 1.6kPa
09:00
21°C 33°C 28°C - 100% 1.5kPa
10:00
21°C 32°C 28°C - 100% 1.4kPa
11:00
20°C 31°C 27°C - 100% 1.3kPa
12:00
20°C 31°C 27°C - 100% 1.2kPa
13:00
20°C 30°C 27°C - 100% 1.1kPa
14:00
20°C 29°C 26°C - 100% 1kPa
15:00
20°C 28°C 26°C - 100% 0.99kPa
16:00
20°C 28°C 26°C - 100% 0.89kPa
17:00
21°C 27°C 25°C - 100% 0.79kPa
18:00
21°C 27°C 25°C - 100% 0.69kPa
19:00 ☾
21°C 27°C 25°C - 100% 0.65kPa
20:00 ☾
21°C 26°C 25°C - 100% 0.61kPa
21:00 ☾
21°C 26°C 25°C - 100% 0.57kPa
22:00 ☾
21°C 26°C 25°C - 100% 0.56kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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