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No opportunity windows are predicted in the next 10 days. Conditions can change quickly, so check back for updates.

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Rule Morning Frost

Nikko - Morning Frost - Japan

Q: What conditions does Morning Frost look for?

Time Window: Sunrise -45m to +90m. Frost Probability: ≥ 60.0%. Wind Speed: ≤ 1.5m/s

Nikkō, Tochigi, Japan

Frost crystals on calm, cold mornings near sunrise

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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 72% failing

Currently

Real-time conditions

Frost Probability

Soil Temperature10.2°C

Dew Point9.1°C (moderate dew point)

Wind Speed1.6m/s (calm conditions)

Cloud Cover5%

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 80 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, May 24
13:00	✕	0%	1.5m/s
14:00	✕	0%	1.1m/s
15:00	✕	0%	1.4m/s
16:00	✕	0%	1.5m/s
17:00	✕	0%	1.7m/s
18:00	✕	0%	1.4m/s
19:00	✕	0%	1.3m/s
20:00	✕	0%	0.87m/s
21:00	✕	0%	1.3m/s
22:00	✕	0%	1.6m/s
23:00	✕	0%	1.9m/s
Mon, May 25
24:00	✕	0%	1.9m/s
01:00	✕	0%	1.9m/s
02:00	✕	0%	1.9m/s
03:00	✕	0%	1.8m/s
04:00	✕	0%	2.1m/s
05:00	✕	0%	2.2m/s
06:00	✕	0%	1.1m/s
07:00	✕	0%	0.58m/s
08:00	✕	0%	1.2m/s
09:00	✕	0%	2m/s
10:00	✕	0%	2.8m/s
11:00	✕	0%	3m/s
12:00	✕	0%	3.2m/s
13:00	✕	0%	3.2m/s
14:00	✕	0%	2.5m/s
15:00	✕	0%	1.7m/s
16:00	✕	0%	1.5m/s
17:00	✕	0%	1.3m/s
18:00	✕	0%	1.4m/s
19:00	✕	0%	1.3m/s
20:00	✕	0%	1.2m/s
21:00	✕	0%	1.4m/s
22:00	✕	0%	1.6m/s
23:00	✕	0%	1.6m/s
Tue, May 26
24:00	✕	0%	2m/s
01:00	✕	0%	1.9m/s
02:00	✕	0%	2.1m/s
03:00	✕	0%	2m/s
04:00	✕	0%	1.9m/s
05:00	✕	0%	1.5m/s
06:00	✕	0%	1m/s
07:00	✕	0%	1.4m/s
08:00	✕	0%	2.2m/s
09:00	✕	0%	2.5m/s
10:00	✕	0%	2.6m/s
11:00	✕	0%	2.8m/s
12:00	✕	0%	2.9m/s
13:00	✕	0%	2.8m/s
14:00	✕	0%	2.6m/s
15:00	✕	0%	2.6m/s
16:00	✕	0%	2.2m/s
17:00	✕	0%	1.9m/s
18:00	✕	0%	1.3m/s
19:00	✕	0%	1.3m/s
20:00	✕	0%	0.94m/s
21:00	✕	0%	0.9m/s
22:00	✕	0%	1.1m/s
23:00	✕	0%	1.4m/s
Wed, May 27
24:00	✕	0%	1.8m/s
01:00	✕	0%	1.8m/s
02:00	✕	0%	1.5m/s
03:00	✕	0%	1.3m/s
04:00	✕	0%	1.8m/s
05:00	✕	0%	2.3m/s
06:00	✕	0%	2.8m/s
07:00	✕	0%	2.7m/s
08:00	✕	0%	2.7m/s
09:00	✕	0%	2.6m/s
10:00	✕	0%	2.3m/s
11:00	✕	0%	2m/s
12:00	✕	0%	1.7m/s
13:00	✕	0%	1.8m/s
14:00	✕	0%	2m/s
15:00	✕	0%	2.1m/s
16:00	✕	0%	2.1m/s
17:00	✕	0%	2.1m/s
18:00	✕	0%	2.1m/s
19:00	✕	0%	2.2m/s
20:00	✕	0%	2.2m/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
Sun, May 24 Sunrise 04:28 Sunset 18:48
22:00 ☾	9.1°C	10°C	9.8°C	-	5%	0.06kPa
23:00 ☾	8.2°C	10°C	8.8°C	-	4%	0.05kPa
Mon, May 25 Sunrise 04:28 Sunset 18:48
24:00 ☾	7.8°C	10°C	8.5°C	-	4%	0.06kPa
01:00 ☾	7.5°C	10°C	8.3°C	-	3%	0.06kPa
02:00 ☾	7.4°C	9.9°C	8.4°C	-	1%	0.08kPa
03:00 ☾	7.3°C	9.7°C	8.6°C	-	0%	0.09kPa
04:00 ☾	7.2°C	9.7°C	8.7°C	-	0%	0.11kPa
05:00 ☾	7.4°C	9.6°C	9.3°C	-	0%	0.15kPa
06:00 ☾	9.3°C	9.7°C	13°C	-	0%	0.3kPa
07:00 ☾	9.7°C	10°C	15°C	-	0%	0.51kPa
08:00 ☾	9.4°C	10°C	17°C	-	0%	0.73kPa
09:00	9.4°C	11°C	18°C	-	5%	0.91kPa
10:00	9.8°C	11°C	19°C	-	11%	0.99kPa
11:00	11°C	12°C	20°C	-	24%	0.99kPa
12:00	11°C	12°C	20°C	-	54%	0.99kPa
13:00	12°C	13°C	20°C	-	97%	0.92kPa
14:00	12°C	13°C	18°C	-	100%	0.64kPa
15:00	12°C	13°C	17°C	-	100%	0.49kPa
16:00	12°C	13°C	17°C	-	76%	0.51kPa
17:00	12°C	13°C	17°C	-	99%	0.52kPa
18:00	12°C	14°C	15°C	-	100%	0.28kPa
19:00 ☾	12°C	14°C	14°C	-	100%	0.15kPa
20:00 ☾	12°C	14°C	13°C	-	100%	0.08kPa
21:00 ☾	12°C	13°C	12°C	-	100%	0.05kPa
22:00 ☾	12°C	13°C	12°C	-	100%	0.03kPa
23:00 ☾	12°C	13°C	12°C	-	100%	0.04kPa
Tue, May 26 Sunrise 04:27 Sunset 18:49
24:00 ☾	11°C	13°C	12°C	-	99%	0.04kPa
01:00 ☾	10°C	13°C	11°C	-	88%	0.05kPa
02:00 ☾	9.6°C	13°C	10°C	-	100%	0.06kPa
03:00 ☾	9.3°C	13°C	10°C	-	100%	0.08kPa
04:00 ☾	8.8°C	13°C	10°C	-	100%	0.1kPa
05:00 ☾	9°C	12°C	11°C	-	100%	0.14kPa
06:00 ☾	10°C	12°C	13°C	-	100%	0.22kPa
07:00 ☾	11°C	12°C	14°C	-	100%	0.29kPa
08:00 ☾	12°C	13°C	16°C	-	100%	0.39kPa
09:00	12°C	13°C	16°C	-	100%	0.46kPa
10:00	12°C	13°C	17°C	-	83%	0.46kPa
11:00	12°C	13°C	18°C	-	81%	0.61kPa
12:00	13°C	14°C	17°C	-	100%	0.52kPa
13:00	13°C	14°C	17°C	-	100%	0.45kPa
14:00	13°C	14°C	17°C	-	100%	0.48kPa
15:00	12°C	14°C	17°C	-	100%	0.55kPa
16:00	12°C	14°C	16°C	-	100%	0.4kPa
17:00	13°C	14°C	15°C	-	100%	0.29kPa
18:00	13°C	14°C	15°C	-	100%	0.2kPa
19:00 ☾	13°C	14°C	14°C	-	100%	0.11kPa
20:00 ☾	12°C	14°C	12°C	-	100%	0.04kPa
21:00 ☾	12°C	14°C	12°C	-	100%	0.02kPa
22:00 ☾	12°C	14°C	12°C	-	100%	0.01kPa
23:00 ☾	12°C	14°C	12°C	-	100%	0.02kPa
Wed, May 27 Sunrise 04:27 Sunset 18:50
24:00 ☾	12°C	14°C	12°C	-	100%	0.03kPa
01:00 ☾	12°C	14°C	12°C	-	100%	0.05kPa
02:00 ☾	11°C	13°C	12°C	-	100%	0.05kPa
03:00 ☾	11°C	13°C	11°C	-	100%	0.05kPa
04:00 ☾	12°C	14°C	15°C	-	100%	0.28kPa
05:00 ☾	12°C	14°C	18°C	-	100%	0.62kPa
06:00 ☾	12°C	14°C	21°C	-	100%	1.1kPa
07:00 ☾	12°C	14°C	20°C	-	100%	0.9kPa
08:00 ☾	13°C	14°C	19°C	-	100%	0.74kPa
09:00	13°C	15°C	18°C	-	100%	0.59kPa
10:00	13°C	15°C	17°C	-	98%	0.43kPa
11:00	13°C	15°C	16°C	-	96%	0.29kPa
12:00	13°C	15°C	15°C	-	95%	0.17kPa
13:00	13°C	15°C	14°C	-	74%	0.14kPa
14:00	12°C	15°C	13°C	-	52%	0.11kPa
15:00	12°C	14°C	13°C	-	31%	0.08kPa
16:00	11°C	14°C	12°C	-	54%	0.08kPa
17:00	11°C	14°C	12°C	-	77%	0.09kPa
18:00	10°C	14°C	11°C	-	100%	0.1kPa
19:00 ☾	9.8°C	14°C	11°C	-	100%	0.12kPa
20:00 ☾	9.4°C	14°C	11°C	-	100%	0.14kPa
21:00 ☾	8.9°C	14°C	11°C	-	100%	0.16kPa

How to read: these inputs help produce the derived score; they are not requirements by themselves.

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