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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 100% failing

Currently

Real-time conditions
Frost Probability
0%
Soil Temperature9725.9°C
Dew Point13.9°C (moderate dew point)
Wind Speed5.6m/s (moderate winds)
Cloud Cover8%

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
Sun, Apr 19
17:00✕0%3.8m/s
18:00✕0%3.9m/s
19:00✕0%3.9m/s
20:00✕0%2.6m/s
21:00✕0%2.1m/s
22:00✕0%1.9m/s
23:00✕0%0.82m/s
Mon, Apr 20
24:00✕0%2.1m/s
01:00✕0%2.2m/s
02:00✕0%2.4m/s
03:00✕0%3m/s
04:00✕0%2.9m/s
05:00✕0%3.1m/s
06:00✕0%3.5m/s
07:00✕0%3.9m/s
08:00✕0%3.7m/s
09:00✕0%3.1m/s
10:00✕0%2.8m/s
11:00✕0%0.82m/s
12:00✕0%2m/s
13:00✕0%3.8m/s
14:00✕0%5m/s
15:00✕0%6.4m/s
16:00✕0%7m/s
17:00✕0%5.6m/s
18:00✕0%5.6m/s
19:00✕0%5.5m/s
20:00✕0%5.5m/s
21:00✕0%5.5m/s
22:00✕0%5.6m/s
23:00✕0%5.9m/s
Tue, Apr 21
24:00✕0%6.1m/s
01:00✕0%6.1m/s
02:00✕0%5.8m/s
03:00✕0%5.1m/s
04:00✕0%5.9m/s
05:00✕0%6.5m/s
06:00✕0%6.5m/s
07:00✕0%6m/s
08:00✕0%5.9m/s
09:00✕0%5.9m/s
10:00✕0%4m/s
11:00✕0%4.5m/s
12:00✕0%4.9m/s
13:00✕0%5.2m/s
14:00✕0%4.7m/s
15:00✕0%5.6m/s
16:00✕0%4.9m/s
17:00✕0%3.1m/s
18:00✕0%3.7m/s
19:00✕0%4.1m/s
20:00✕0%4.2m/s
21:00✕0%3.7m/s
22:00✕0%2.9m/s
23:00✕0%2.7m/s
Wed, Apr 22
24:00✕0%1.8m/s
01:00✕0%2.3m/s
02:00✕0%2.9m/s
03:00✕0%3.4m/s
04:00✕0%2.1m/s
05:00✕0%1.8m/s
06:00✕0%2m/s
07:00✕0%2.9m/s
08:00✕0%3.3m/s
09:00✕0%4.4m/s
10:00✕0%5.5m/s
11:00✕0%5.8m/s
12:00✕0%5.3m/s
13:00✕0%5.3m/s
14:00✕0%5.3m/s
15:00✕0%5.4m/s
16:00✕0%5.6m/s
17:00✕0%6.1m/s
18:00✕0%6.9m/s
19:00✕0%6.2m/s
20:00✕0%5.3m/s
21:00✕0%5.3m/s
22:00✕0%5.1m/s
23:00✕0%5m/s
Thu, Apr 23
24:00✕0%4.8m/s
01:00✕0%4.9m/s
02:00✕0%5m/s
03:00✕0%5m/s
04:00✕0%4.7m/s
05:00✕0%4.3m/s
06:00✕0%4m/s
07:00✕0%3.8m/s
08:00✕0%3.6m/s
09:00✕0%3.5m/s
10:00✕0%3.5m/s
11:00✕0%3.5m/s
12:00✕0%3.6m/s
13:00✕0%4.2m/s
14:00✕0%4.9m/s
15:00✕0%5.6m/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
Mon, Apr 20 Sunrise 05:04 Sunset 18:18
17:00
14°C 9726°C 18°C - 8% 0.47kPa
18:00
14°C 9726°C 18°C - 2% 0.45kPa
19:00 ☾
14°C 9726°C 18°C - 5% 0.46kPa
20:00 ☾
14°C 9726°C 18°C - 0% 0.46kPa
21:00 ☾
14°C 9726°C 18°C - 5% 0.45kPa
22:00 ☾
14°C 9726°C 17°C - 5% 0.4kPa
23:00 ☾
14°C 9726°C 17°C - 5% 0.39kPa
Tue, Apr 21 Sunrise 05:04 Sunset 18:18
24:00 ☾
14°C 9726°C 17°C - 5% 0.37kPa
01:00 ☾
14°C 9726°C 17°C - 12% 0.33kPa
02:00 ☾
14°C 9726°C 17°C - 5% 0.32kPa
03:00 ☾
14°C 9726°C 17°C - 100% 0.31kPa
04:00 ☾
14°C 9726°C 17°C - 100% 0.33kPa
05:00 ☾
14°C 9726°C 17°C - 100% 0.31kPa
06:00 ☾
14°C 9726°C 17°C - 100% 0.3kPa
07:00 ☾
14°C 9726°C 17°C - 100% 0.32kPa
08:00 ☾
14°C 9726°C 17°C - 100% 0.35kPa
09:00
15°C 9726°C 18°C - 100% 0.35kPa
10:00
15°C 9726°C 18°C - 100% 0.38kPa
11:00
14°C 9726°C 18°C - 100% 0.52kPa
12:00
13°C 9726°C 19°C - 100% 0.74kPa
13:00
13°C 9726°C 19°C - 72% 0.8kPa
14:00
12°C 9726°C 20°C - 2% 0.85kPa
15:00
13°C 9726°C 20°C - 5% 0.87kPa
16:00
12°C 9726°C 20°C - 9% 0.92kPa
17:00
12°C 9726°C 20°C - 3% 0.96kPa
18:00
14°C 9726°C 19°C - 10% 0.58kPa
19:00 ☾
14°C 9726°C 17°C - 5% 0.39kPa
20:00 ☾
13°C 9726°C 17°C - 28% 0.47kPa
21:00 ☾
12°C 9726°C 17°C - 46% 0.56kPa
22:00 ☾
11°C 9726°C 17°C - 42% 0.65kPa
23:00 ☾
9.1°C 9726°C 17°C - 38% 0.76kPa
Wed, Apr 22 Sunrise 05:02 Sunset 18:18
24:00 ☾
7.2°C 9726°C 16°C - 40% 0.86kPa
01:00 ☾
6.1°C 9726°C 16°C - 43% 0.87kPa
02:00 ☾
5.3°C 9726°C 16°C - 6% 0.9kPa
03:00 ☾
4.4°C 9726°C 16°C - 35% 0.94kPa
04:00 ☾
4.5°C 9726°C 16°C - 100% 0.93kPa
05:00 ☾
5.2°C 9726°C 16°C - 100% 0.9kPa
06:00 ☾
6°C 9726°C 16°C - 99% 0.89kPa
07:00 ☾
7.8°C 9726°C 16°C - 100% 0.8kPa
08:00 ☾
10°C 9726°C 17°C - 100% 0.66kPa
09:00
12°C 9726°C 17°C - 100% 0.51kPa
10:00
13°C 9726°C 17°C - 99% 0.45kPa
11:00
13°C 9726°C 17°C - 100% 0.5kPa
12:00
13°C 9726°C 18°C - 100% 0.55kPa
13:00
13°C 9726°C 18°C - 100% 0.52kPa
14:00
14°C 9726°C 18°C - 100% 0.48kPa
15:00
14°C 9726°C 18°C - 100% 0.44kPa
16:00
14°C 9726°C 18°C - 100% 0.43kPa
17:00
14°C 9726°C 18°C - 100% 0.46kPa
18:00
14°C 9726°C 18°C - 100% 0.45kPa
19:00 ☾
14°C 9726°C 18°C - 100% 0.43kPa
20:00 ☾
14°C 9726°C 18°C - 100% 0.42kPa
21:00 ☾
14°C 9726°C 18°C - 100% 0.47kPa
22:00 ☾
14°C 9726°C 18°C - 100% 0.49kPa
23:00 ☾
14°C 9726°C 18°C - 100% 0.51kPa
Thu, Apr 23 Sunrise 05:01 Sunset 18:19
24:00 ☾
13°C 9726°C 18°C - 100% 0.52kPa
01:00 ☾
13°C 9726°C 18°C - 100% 0.5kPa
02:00 ☾
13°C 9726°C 18°C - 100% 0.49kPa
03:00 ☾
12°C 9726°C 17°C - 100% 0.61kPa
04:00 ☾
10°C 6491°C 18°C - 100% 0.83kPa
05:00 ☾
8.4°C 3256°C 19°C - 100% 1.1kPa
06:00 ☾
6.1°C 21°C 19°C - 100% 1.3kPa
07:00 ☾
6.6°C 22°C 20°C - 100% 1.3kPa
08:00 ☾
7.1°C 22°C 20°C - 100% 1.3kPa
09:00
7.5°C 23°C 20°C - 100% 1.3kPa
10:00
9.4°C 22°C 19°C - 100% 0.96kPa
11:00
11°C 21°C 17°C - 100% 0.69kPa
12:00
12°C 21°C 16°C - 100% 0.46kPa
13:00
11°C 20°C 15°C - 100% 0.39kPa
14:00
11°C 19°C 14°C - 100% 0.33kPa
15:00
11°C 18°C 14°C - 100% 0.27kPa
16:00
11°C 18°C 14°C - 100% 0.25kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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