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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)
Frost Probability 100% failing
Wind Speed 90% failing
Time Window 88% failing

Currently

Real-time conditions
Soil Temperature10.8°C
Dew Point4.3°C (low dew point)
Wind Speed5.9m/s (moderate winds)
Cloud Cover48%

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 92 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
Wed, Apr 8
13:000%3.6m/s
14:000%3.7m/s
15:000%3.9m/s
16:000%3.2m/s
17:000%3m/s
18:000%2.7m/s
19:000%2.8m/s
20:000%2.7m/s
21:000%2.5m/s
22:000%2.2m/s
23:000%2.3m/s
Thu, Apr 9
24:000%2m/s
01:000%1.6m/s
02:000%1.6m/s
03:000%1.7m/s
04:000%1.5m/s
05:000%1.9m/s
06:000%1.9m/s
07:000%2.2m/s
08:000%3.8m/s
09:000%5m/s
10:000%5.9m/s
11:000%5.8m/s
12:000%6.4m/s
13:000%6.9m/s
14:000%7.3m/s
15:000%7.1m/s
16:000%6m/s
17:000%5.7m/s
18:000%5m/s
19:000%4.7m/s
20:000%3.9m/s
21:000%3.7m/s
22:000%3.1m/s
23:000%2.9m/s
Fri, Apr 10
24:000%2.7m/s
01:000%2.7m/s
02:000%2.4m/s
03:000%2.6m/s
04:000%2.4m/s
05:000%1.7m/s
06:000%1.7m/s
07:000%1.6m/s
08:000%1.7m/s
09:000%1.7m/s
10:000%2.3m/s
11:000%2.9m/s
12:000%2.9m/s
13:000%2.8m/s
14:000%2.4m/s
15:000%3.6m/s
16:000%3.5m/s
17:000%3m/s
18:000%2.5m/s
19:000%2m/s
20:000%2.4m/s
21:000%2.7m/s
22:000%2.8m/s
23:000%3.6m/s
Sat, Apr 11
24:000%3.4m/s
01:000%3.3m/s
02:000%3.2m/s
03:000%2.6m/s
04:000%2.8m/s
05:000%2.6m/s
06:000%2.8m/s
07:000%2.6m/s
08:000%2.4m/s
09:000%1.6m/s
10:000%1.6m/s
11:000%2.1m/s
12:000%2.9m/s
13:000%2.9m/s
14:000%2.7m/s
15:000%2.1m/s
16:000%2.3m/s
17:000%2.4m/s
18:000%2.6m/s
19:000%2.5m/s
20:000%2.4m/s
21:000%2.2m/s
22:000%2.1m/s
23:000%2.1m/s
Sun, Apr 12
24:000%2m/s
01:000%1.7m/s
02:000%1.5m/s
03:000%1.2m/s
04:000%1.1m/s
05:000%0.91m/s
06:000%0.75m/s
07:000%0.8m/s
08:000%0.86m/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
Thu, Apr 9 Sunrise 05:19 Sunset 18:11
10:00
4.3°C 11°C 13°C - 48% 0.65kPa
11:00
4.1°C 12°C 14°C - 100% 0.75kPa
12:00
4.4°C 12°C 14°C - 100% 0.76kPa
13:00
5°C 13°C 14°C - 95% 0.75kPa
14:00
5.8°C 13°C 14°C - 100% 0.7kPa
15:00
6.3°C 14°C 13°C - 100% 0.58kPa
16:00
6.8°C 13°C 12°C - 100% 0.45kPa
17:00
7.2°C 13°C 12°C - 100% 0.38kPa
18:00
7.3°C 13°C 11°C - 100% 0.33kPa
19:00
7.8°C 12°C 11°C - 100% 0.27kPa
20:00
8.6°C 12°C 11°C - 100% 0.17kPa
21:00
9°C 12°C 10°C - 100% 0.11kPa
22:00
9.1°C 12°C 10°C - 100% 0.07kPa
23:00
9.3°C 11°C 9.9°C - 100% 0.04kPa
Fri, Apr 10 Sunrise 05:19 Sunset 18:11
24:00
9.5°C 11°C 9.9°C - 100% 0.03kPa
01:00
9.6°C 11°C 9.9°C - 100% 0.02kPa
02:00
9.7°C 11°C 10°C - 100% 0.02kPa
03:00
9.8°C 11°C 10°C - 100% 0.02kPa
04:00
10°C 11°C 10°C - 100% 0.02kPa
05:00
10°C 11°C 10°C - 100% 0.02kPa
06:00
11°C 11°C 11°C - 100% 0.02kPa
07:00
11°C 11°C 11°C - 100% 0.02kPa
08:00
11°C 11°C 11°C - 100% 0.02kPa
09:00
11°C 11°C 11°C - 100% 0.02kPa
10:00
12°C 11°C 12°C - 100% 0.01kPa
11:00
12°C 11°C 12°C - 100% 0.02kPa
12:00
13°C 11°C 13°C - 100% 0.03kPa
13:00
13°C 12°C 13°C - 100% 0.03kPa
14:00
13°C 12°C 13°C - 100% 0.02kPa
15:00
14°C 12°C 14°C - 100% 0.04kPa
16:00
14°C 12°C 14°C - 100% 0.04kPa
17:00
14°C 12°C 14°C - 100% 0.04kPa
18:00
14°C 12°C 14°C - 100% 0.03kPa
19:00
14°C 13°C 14°C - 100% 0.03kPa
20:00
14°C 13°C 14°C - 100% 0.02kPa
21:00
14°C 13°C 14°C - 100% 0.03kPa
22:00
14°C 13°C 14°C - 80% 0.04kPa
23:00
14°C 13°C 14°C - 81% 0.07kPa
Sat, Apr 11 Sunrise 05:17 Sunset 18:11
24:00
14°C 13°C 14°C - 92% 0.04kPa
01:00
13°C 13°C 14°C - 79% 0.05kPa
02:00
13°C 13°C 13°C - 76% 0.07kPa
03:00
12°C 13°C 13°C - 68% 0.09kPa
04:00
11°C 13°C 13°C - 45% 0.14kPa
05:00
11°C 13°C 13°C - 50% 0.12kPa
06:00
11°C 13°C 13°C - 51% 0.16kPa
07:00
11°C 13°C 13°C - 53% 0.2kPa
08:00
11°C 13°C 14°C - 42% 0.27kPa
09:00
12°C 13°C 15°C - 9% 0.4kPa
10:00
12°C 14°C 18°C - 0% 0.66kPa
11:00
11°C 15°C 19°C - 0% 0.93kPa
12:00
9.5°C 16°C 20°C - 0% 1.2kPa
13:00
8.9°C 17°C 21°C - 0% 1.3kPa
14:00
7.7°C 18°C 21°C - 0% 1.5kPa
15:00
6.9°C 18°C 21°C - 0% 1.6kPa
16:00
8.7°C 17°C 19°C - 28% 1kPa
17:00
9.4°C 16°C 16°C - 56% 0.62kPa
18:00
9.5°C 15°C 13°C - 84% 0.32kPa
19:00
11°C 15°C 13°C - 89% 0.24kPa
20:00
12°C 15°C 13°C - 95% 0.16kPa
21:00
13°C 15°C 13°C - 100% 0.08kPa
22:00
12°C 14°C 13°C - 100% 0.09kPa
23:00
12°C 14°C 13°C - 100% 0.09kPa
Sun, Apr 12 Sunrise 05:16 Sunset 18:12
24:00
11°C 14°C 12°C - 100% 0.1kPa
01:00
11°C 14°C 13°C - 100% 0.14kPa
02:00
11°C 14°C 13°C - 100% 0.19kPa
03:00
11°C 14°C 14°C - 100% 0.24kPa
04:00
11°C 14°C 15°C - 92% 0.34kPa
05:00
12°C 15°C 16°C - 84% 0.45kPa
06:00
12°C 15°C 17°C - 76% 0.57kPa
07:00
11°C 16°C 18°C - 51% 0.67kPa
08:00
11°C 16°C 18°C - 27% 0.78kPa
09:00
11°C 17°C 19°C - 3% 0.89kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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