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Rule Morning Frost

Kanazawa - Morning Frost - Japan

Kanazawa, Ishikawa, 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 85% failing

Currently

Real-time conditions
Frost Probability
0%
Soil Temperature15.1°C
Dew Point11.7°C (moderate dew point)
Wind Speed3.1m/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
Sat, Apr 18
04:00✕0%3.2m/s
05:00✕0%2.4m/s
06:00✕0%2.2m/s
07:00✕0%2.3m/s
08:00✕0%0.95m/s
09:00✕0%1.5m/s
10:00✕0%3.2m/s
11:00✕0%2.4m/s
12:00✕0%2.7m/s
13:00✕0%3.5m/s
14:00✕0%2.5m/s
15:00✕0%2.4m/s
16:00✕0%4m/s
17:00✕0%3.5m/s
18:00✕0%3.7m/s
19:00✕0%3.4m/s
20:00✕0%4.2m/s
21:00✕0%4.5m/s
22:00✕0%3.3m/s
23:00✕0%2.3m/s
Sun, Apr 19
24:00✕0%2.3m/s
01:00✕0%2.7m/s
02:00✕0%2.7m/s
03:00✕0%2.4m/s
04:00✕0%3.1m/s
05:00✕0%3.4m/s
06:00✕0%4.2m/s
07:00✕0%5.5m/s
08:00✕0%5.1m/s
09:00✕0%6.2m/s
10:00✕0%6.7m/s
11:00✕0%7.3m/s
12:00✕0%7.3m/s
13:00✕0%6.9m/s
14:00✕0%6.6m/s
15:00✕0%6.2m/s
16:00✕0%5.6m/s
17:00✕0%5.2m/s
18:00✕0%4.5m/s
19:00✕0%3.5m/s
20:00✕0%2.6m/s
21:00✕0%1.5m/s
22:00✕0%1.3m/s
23:00✕0%1.2m/s
Mon, Apr 20
24:00✕0%1.3m/s
01:00✕0%0.44m/s
02:00✕0%0.56m/s
03:00✕0%1.1m/s
04:00✕0%1.8m/s
05:00✕0%2.1m/s
06:00✕0%2m/s
07:00✕0%1.4m/s
08:00✕0%1.2m/s
09:00✕0%0.77m/s
10:00✕0%1.5m/s
11:00✕0%4.1m/s
12:00✕0%3.7m/s
13:00✕0%1.9m/s
14:00✕0%1.3m/s
15:00✕0%3.9m/s
16:00✕0%6.4m/s
17:00✕0%7.9m/s
18:00✕0%6.2m/s
19:00✕0%5m/s
20:00✕0%3.6m/s
21:00✕0%3.3m/s
22:00✕0%4m/s
23:00✕0%3.9m/s
Tue, Apr 21
24:00✕0%4.1m/s
01:00✕0%8.4m/s
02:00✕0%12m/s
03:00✕0%11m/s
04:00✕0%2.8m/s
05:00✕0%5m/s
06:00✕0%4.9m/s
07:00✕0%3.2m/s
08:00✕0%2.1m/s
09:00✕0%3m/s
10:00✕0%3.4m/s
11:00✕0%3.8m/s
12:00✕0%4.3m/s
13:00✕0%3.8m/s
14:00✕0%3.4m/s
15:00✕0%2.9m/s
16:00✕0%3m/s
17:00✕0%3.1m/s
18:00✕0%3.3m/s
19:00✕0%3.3m/s
20:00✕0%3.3m/s
21:00✕0%3.4m/s
22:00✕0%3.1m/s
23:00✕0%2.9m/s
Wed, Apr 22
24:00✕0%2.7m/s
01:00✕0%3m/s
02:00✕0%3.3m/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
Sun, Apr 19 Sunrise 05:16 Sunset 18:29
04:00 ☾
12°C 15°C 14°C - 100% 0.26kPa
05:00 ☾
12°C 15°C 14°C - 100% 0.26kPa
06:00 ☾
12°C 15°C 14°C - 100% 0.25kPa
07:00 ☾
12°C 15°C 15°C - 100% 0.28kPa
08:00 ☾
12°C 15°C 16°C - 100% 0.38kPa
09:00
12°C 16°C 17°C - 100% 0.5kPa
10:00
11°C 17°C 18°C - 100% 0.69kPa
11:00
11°C 19°C 18°C - 100% 0.79kPa
12:00
10°C 20°C 18°C - 100% 0.88kPa
13:00
10°C 21°C 19°C - 100% 0.96kPa
14:00
10°C 21°C 19°C - 100% 0.94kPa
15:00
10°C 22°C 19°C - 100% 0.91kPa
16:00
9.8°C 22°C 18°C - 100% 0.89kPa
17:00
9.6°C 21°C 17°C - 100% 0.78kPa
18:00
9.5°C 20°C 17°C - 100% 0.73kPa
19:00 ☾
10°C 20°C 17°C - 100% 0.68kPa
20:00 ☾
10°C 19°C 17°C - 100% 0.64kPa
21:00 ☾
11°C 19°C 17°C - 100% 0.58kPa
22:00 ☾
11°C 18°C 17°C - 100% 0.55kPa
23:00 ☾
11°C 18°C 16°C - 100% 0.53kPa
Mon, Apr 20 Sunrise 05:15 Sunset 18:30
24:00 ☾
11°C 18°C 16°C - 100% 0.5kPa
01:00 ☾
12°C 17°C 16°C - 100% 0.47kPa
02:00 ☾
12°C 17°C 16°C - 91% 0.44kPa
03:00 ☾
11°C 17°C 16°C - 100% 0.41kPa
04:00 ☾
12°C 16°C 15°C - 100% 0.37kPa
05:00 ☾
12°C 16°C 15°C - 17% 0.36kPa
06:00 ☾
11°C 16°C 15°C - 95% 0.42kPa
07:00 ☾
11°C 16°C 16°C - 58% 0.53kPa
08:00 ☾
11°C 17°C 17°C - 66% 0.64kPa
09:00
11°C 19°C 18°C - 71% 0.79kPa
10:00
11°C 20°C 20°C - 27% 0.96kPa
11:00
12°C 22°C 18°C - 0% 0.71kPa
12:00
12°C 23°C 18°C - 1% 0.67kPa
13:00
12°C 23°C 19°C - 1% 0.76kPa
14:00
11°C 24°C 21°C - 2% 1.2kPa
15:00
9.6°C 25°C 22°C - 5% 1.4kPa
16:00
8.8°C 25°C 23°C - 16% 1.7kPa
17:00
9.1°C 25°C 23°C - 80% 1.6kPa
18:00
8.9°C 24°C 21°C - 5% 1.4kPa
19:00 ☾
9.1°C 23°C 20°C - 100% 1.2kPa
20:00 ☾
9.6°C 22°C 19°C - 13% 0.99kPa
21:00 ☾
10°C 21°C 18°C - 100% 0.83kPa
22:00 ☾
11°C 20°C 17°C - 100% 0.68kPa
23:00 ☾
11°C 20°C 17°C - 100% 0.68kPa
Tue, Apr 21 Sunrise 05:14 Sunset 18:31
24:00 ☾
11°C 19°C 17°C - 100% 0.65kPa
01:00 ☾
13°C 19°C 15°C - 100% 0.23kPa
02:00 ☾
14°C 18°C 14°C - 100% 0.04kPa
03:00 ☾
11°C 17°C 13°C - 100% 0.16kPa
04:00 ☾
7.8°C 16°C 12°C - 100% 0.33kPa
05:00 ☾
8.3°C 15°C 12°C - 99% 0.27kPa
06:00 ☾
6.4°C 14°C 12°C - 4% 0.42kPa
07:00 ☾
4.5°C 14°C 13°C - 0% 0.61kPa
08:00 ☾
4°C 14°C 14°C - 0% 0.74kPa
09:00
4.8°C 15°C 14°C - 0% 0.79kPa
10:00
3.9°C 16°C 15°C - 0% 0.86kPa
11:00
3°C 17°C 15°C - 0% 0.93kPa
12:00
2°C 19°C 15°C - 0% 1kPa
13:00
2°C 18°C 15°C - 0% 0.97kPa
14:00
2°C 17°C 14°C - 0% 0.92kPa
15:00
2°C 16°C 14°C - 0% 0.89kPa
16:00
1.8°C 15°C 14°C - 25% 0.86kPa
17:00
1.5°C 15°C 13°C - 50% 0.83kPa
18:00
1.2°C 14°C 13°C - 76% 0.81kPa
19:00 ☾
0.7°C 14°C 13°C - 84% 0.84kPa
20:00 ☾
0.1°C 14°C 13°C - 92% 0.87kPa
21:00 ☾
-0.5°C 13°C 13°C - 100% 0.9kPa
22:00 ☾
-0.3°C 13°C 13°C - 100% 0.9kPa
23:00 ☾
-0.2°C 13°C 13°C - 100% 0.91kPa
Wed, Apr 22 Sunrise 05:12 Sunset 18:32
24:00 ☾
-0.1°C 13°C 13°C - 100% 0.91kPa
01:00 ☾
0.6°C 14°C 15°C - 100% 1kPa
02:00 ☾
1.3°C 15°C 16°C - 100% 1.1kPa
03:00 ☾
1.9°C 16°C 17°C - 100% 1.3kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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