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Rule Morning Frost

Mount Fuji - Morning Frost - Japan

Fujinomiya, Shizuoka, 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
Time Window 88% failing
Wind Speed 58% failing

Currently

Real-time conditions
Frost Probability
1%
Soil Temperature7.3°C
Dew Point8.8°C (moderate dew point)
Wind Speed1.3m/s (calm conditions)
Cloud Cover99%

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, Feb 22
04:00✕45%1.9m/s
05:00✓50%2m/s
06:00✓50%2m/s
07:00✓50%2.2m/s
08:00✕54%1.3m/s
09:00✕51%0.38m/s
10:00✕45%2.3m/s
11:00✕45%3m/s
12:00✕41%3.5m/s
13:00✕3.3%4m/s
14:00✕3.6%4m/s
15:00✕3.9%3.6m/s
16:00✕3.7%3.2m/s
17:00✕3%2.2m/s
18:00✕2.9%1.3m/s
19:00✕3.1%0.45m/s
20:00✕2.7%0.35m/s
21:00✕2%0.21m/s
22:00✕2.4%0.61m/s
23:00✕1.8%0.86m/s
Mon, Feb 23
24:00✕1.4%1.1m/s
01:00✕1.4%1m/s
02:00✕1.4%0.95m/s
03:00✕1.4%1.1m/s
04:00✕1.4%1.3m/s
05:00✓1.4%1.3m/s
06:00✓1.4%0.91m/s
07:00✓1.6%0.3m/s
08:00✕2%0.62m/s
09:00✕0%0.83m/s
10:00✕0%2.3m/s
11:00✕0%3.3m/s
12:00✕0%3.9m/s
13:00✕0%3.8m/s
14:00✕0%4.1m/s
15:00✕0%3.7m/s
16:00✕0%2.8m/s
17:00✕0%1.3m/s
18:00✕0%0.85m/s
19:00✕0%1.6m/s
20:00✕0%1.5m/s
21:00✕0%1.9m/s
22:00✕0%2m/s
23:00✕0%1.6m/s
Tue, Feb 24
24:00✕0%1.3m/s
01:00✕0%1m/s
02:00✕0%0.94m/s
03:00✕0%1.2m/s
04:00✕0%1.1m/s
05:00✓3.4%1.1m/s
06:00✓3.8%0.88m/s
07:00✓3.8%0.87m/s
08:00✕3.8%0.61m/s
09:00✕3.3%1.5m/s
10:00✕0%2.1m/s
11:00✕0%3m/s
12:00✕0%3.2m/s
13:00✕0%4m/s
14:00✕0%4m/s
15:00✕0%3.4m/s
16:00✕0%2.7m/s
17:00✕0%1.4m/s
18:00✕0%1.4m/s
19:00✕0%1.6m/s
20:00✕0%1.8m/s
21:00✕0%1.7m/s
22:00✕0%1.4m/s
23:00✕0%1.3m/s
Wed, Feb 25
24:00✕0%2m/s
01:00✕0%2.1m/s
02:00✕0%1.4m/s
03:00✕0%1.7m/s
04:00✕0%1.3m/s
05:00✓0%1.2m/s
06:00✓0%0.98m/s
07:00✓0%0.25m/s
08:00✕0%1.1m/s
09:00✕0%1m/s
10:00✕0%2.8m/s
11:00✕0%4.5m/s
12:00✕0%6.2m/s
13:00✕0%6.9m/s
14:00✕0%7.5m/s
15:00✕0%8.2m/s
16:00✕0%8m/s
17:00✕0%7.8m/s
18:00✕0%7.6m/s
19:00✕0%7.5m/s
20:00✕0%7.5m/s
21:00✕0%7.4m/s
22:00✕0%7.2m/s
23:00✕0%7.1m/s
Thu, Feb 26
24:00✕0%7m/s
01:00✕0%6.8m/s
02:00✕0%6.7m/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, Feb 23 Sunrise 06:23 Sunset 17:33
04:00 ☾
8.8°C 7.3°C 9°C - 99% 0.01kPa
05:00 ☾
9°C 7.4°C 9.1°C - 97% 0.01kPa
06:00 ☾
9.1°C 7.5°C 9.2°C - 89% 0.01kPa
07:00 ☾
9.2°C 7.6°C 9.4°C - 86% 0.01kPa
08:00 ☾
9.7°C 7.7°C 10°C - 45% 0.06kPa
09:00 ☾
10°C 8.1°C 13°C - 22% 0.27kPa
10:00 ☾
10°C 8.7°C 15°C - 4% 0.44kPa
11:00 ☾
9.2°C 9.3°C 16°C - 0% 0.7kPa
12:00 ☾
7.2°C 10°C 18°C - 0% 1kPa
13:00 ☾
4.2°C 11°C 19°C - 0% 1.4kPa
14:00 ☾
3.1°C 11°C 20°C - 0% 1.5kPa
15:00 ☾
3.1°C 12°C 19°C - 0% 1.4kPa
16:00 ☾
4.6°C 12°C 18°C - 0% 1.1kPa
17:00 ☾
5.6°C 12°C 14°C - 0% 0.67kPa
18:00 ☾
4.5°C 12°C 11°C - 89% 0.43kPa
19:00 ☾
3.3°C 12°C 9.8°C - 6% 0.43kPa
20:00 ☾
1.1°C 11°C 9.2°C - 7% 0.5kPa
21:00 ☾
-0.9°C 11°C 8.7°C - 4% 0.55kPa
22:00 ☾
-1.9°C 10°C 8.2°C - 31% 0.55kPa
23:00 ☾
-2.1°C 10°C 7.8°C - 48% 0.53kPa
Tue, Feb 24 Sunrise 06:22 Sunset 17:34
24:00 ☾
-1.2°C 9.8°C 7.4°C - 5% 0.47kPa
01:00 ☾
-0.3°C 9.4°C 6.8°C - 5% 0.39kPa
02:00 ☾
0.5°C 9°C 6.4°C - 20% 0.33kPa
03:00 ☾
0.6°C 8.7°C 6°C - 42% 0.3kPa
04:00 ☾
0.1°C 8.3°C 5.6°C - 61% 0.29kPa
05:00 ☾
-0.5°C 8°C 5.2°C - 90% 0.3kPa
06:00 ☾
-1°C 7.6°C 5°C - 86% 0.31kPa
07:00 ☾
-0.6°C 7.3°C 5.6°C - 94% 0.33kPa
08:00 ☾
0.6°C 7.3°C 8.8°C - 100% 0.49kPa
09:00 ☾
1°C 7.6°C 11°C - 100% 0.63kPa
10:00 ☾
1.5°C 8°C 12°C - 61% 0.72kPa
11:00 ☾
1.9°C 8.6°C 13°C - 100% 0.84kPa
12:00 ☾
3°C 9.1°C 14°C - 100% 0.88kPa
13:00 ☾
3.9°C 9.7°C 15°C - 100% 0.85kPa
14:00 ☾
5.3°C 10°C 14°C - 100% 0.71kPa
15:00 ☾
6.6°C 10°C 13°C - 94% 0.54kPa
16:00 ☾
7.4°C 11°C 12°C - 100% 0.38kPa
17:00 ☾
7.8°C 10°C 10°C - 99% 0.2kPa
18:00 ☾
8.3°C 10°C 9.7°C - 100% 0.11kPa
19:00 ☾
8.8°C 10°C 9.5°C - 100% 0.05kPa
20:00 ☾
9.3°C 10°C 9.6°C - 100% 0.02kPa
21:00 ☾
9.5°C 10°C 9.8°C - 100% 0.02kPa
22:00 ☾
9.6°C 9.9°C 9.8°C - 100% 0.02kPa
23:00 ☾
9.7°C 9.9°C 9.9°C - 100% 0.02kPa
Wed, Feb 25 Sunrise 06:21 Sunset 17:35
24:00 ☾
9.8°C 9.8°C 9.9°C - 100% 0.01kPa
01:00 ☾
10°C 9.8°C 10°C - 100% 0.01kPa
02:00 ☾
9.9°C 9.7°C 10°C - 100% 0.01kPa
03:00 ☾
9.4°C 9.7°C 9.7°C - 100% 0.03kPa
04:00 ☾
9.3°C 9.6°C 9.7°C - 100% 0.03kPa
05:00 ☾
8.9°C 9.5°C 9.3°C - 100% 0.03kPa
06:00 ☾
8.8°C 9.4°C 9.5°C - 100% 0.05kPa
07:00 ☾
9.3°C 9.4°C 9.8°C - 100% 0.04kPa
08:00 ☾
9.7°C 9.4°C 10°C - 100% 0.03kPa
09:00 ☾
9.9°C 9.4°C 10°C - 100% 0.03kPa
10:00 ☾
10°C 3248°C 11°C - 100% 0.06kPa
11:00 ☾
10°C 6487°C 11°C - 100% 0.09kPa
12:00 ☾
10°C 9726°C 11°C - 100% 0.12kPa
13:00 ☾
9.5°C 9726°C 11°C - 100% 0.14kPa
14:00 ☾
9°C 9726°C 11°C - 100% 0.17kPa
15:00 ☾
8.4°C 9726°C 11°C - 100% 0.19kPa
16:00 ☾
8.1°C 9726°C 11°C - 100% 0.19kPa
17:00 ☾
7.7°C 9726°C 10°C - 100% 0.2kPa
18:00 ☾
7.4°C 9726°C 10°C - 100% 0.2kPa
19:00 ☾
7.2°C 9726°C 10°C - 100% 0.21kPa
20:00 ☾
7.1°C 9726°C 9.9°C - 100% 0.21kPa
21:00 ☾
6.9°C 9726°C 9.9°C - 100% 0.22kPa
22:00 ☾
6.6°C 9726°C 9.7°C - 75% 0.23kPa
23:00 ☾
6.2°C 9726°C 9.5°C - 49% 0.24kPa
Thu, Feb 26 Sunrise 06:19 Sunset 17:36
24:00 ☾
5.8°C 9726°C 9.4°C - 24% 0.25kPa
01:00 ☾
5.8°C 9726°C 9.7°C - 21% 0.28kPa
02:00 ☾
5.7°C 9726°C 10°C - 18% 0.31kPa
03:00 ☾
5.6°C 9726°C 10°C - 15% 0.34kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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