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Rule Morning Frost

Leiden - Morning Frost - The Netherlands

Leiden, South Holland, The Netherlands

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 93% failing
Time Window 83% failing

Currently

Real-time conditions
Soil Temperature9725.9°C
Dew Point11.9°C (moderate dew point)
Wind Speed4.3m/s (calm conditions)
Cloud Cover84%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Amsterdam

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

Dutch winters, when temperatures drop below freezing for extended periods, transform the country's canals and polders into a magical frozen landscape. Hoar frost decorates windmills, creating delicate ice crystal coatings that catch morning light. The historic Elfstedentocht (Eleven Cities Tour) ice-skating conditions—though rare—exemplify the photography potential.

The flat landscape and high humidity create ideal conditions for heavy frost formation. Windmills accumulate intricate ice crystals on their wooden blades and structures. When canals freeze solid, the Netherlands' character transforms—the water that defines the landscape becomes walkable, creating unique perspectives.

What makes Dutch frost photography special:

  • Windmill ice crystals - Hoar frost coating historic structures in delicate white patterns
  • Frozen canal perspective - Unique viewpoints walking on typically impassable water
  • Polder snow simplicity - Minimalist white expanses broken only by windmills and farms
  • Urban canal ice - Amsterdam and Leiden's waterways frozen with footprints and skate tracks

True freezing conditions requiring sustained temperatures below -5°C for multiple days are becoming rarer with climate change. When they occur (typically January-February), act quickly—conditions may last only days. Best frost photography occurs at sunrise when low-angle light illuminates ice crystals. The Kinderdijk, Giethoorn's canals, and rural polders of Friesland offer exceptional winter scenes. Safety first—never venture onto ice without local knowledge of thickness.

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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
Europe/Amsterdam
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sat, May 23
15:000%5.1m/s
16:000%5.6m/s
17:000%4.4m/s
18:000%4.1m/s
19:000%4m/s
20:000%3.6m/s
21:000%3.8m/s
22:000%3.8m/s
23:000%3.6m/s
Sun, May 24
24:000%3.1m/s
01:000%2.6m/s
02:000%2.4m/s
03:000%2.5m/s
04:000%2.4m/s
05:000%2.4m/s
06:000%2.3m/s
07:000%2.1m/s
08:000%2.1m/s
09:000%2m/s
10:000%1.9m/s
11:000%2m/s
12:000%2.9m/s
13:000%3.8m/s
14:000%4.1m/s
15:000%4.3m/s
16:000%4.5m/s
17:000%4.6m/s
18:000%4m/s
19:000%3.2m/s
20:000%3.5m/s
21:000%3.4m/s
22:000%2.8m/s
23:000%2.6m/s
Mon, May 25
24:000%2.5m/s
01:000%2.5m/s
02:000%2.5m/s
03:000%2.5m/s
04:000%2.3m/s
05:000%2.3m/s
06:000%2.4m/s
07:000%2.2m/s
08:000%2.1m/s
09:000%1.8m/s
10:000%1.3m/s
11:000%0.59m/s
12:000%0.79m/s
13:000%2.3m/s
14:000%3.2m/s
15:000%3.9m/s
16:000%4.3m/s
17:000%4.1m/s
18:000%3.8m/s
19:000%3.5m/s
20:000%3.4m/s
21:000%2.8m/s
22:000%2.4m/s
23:000%2.6m/s
Tue, May 26
24:000%2.6m/s
01:000%2.4m/s
02:000%2.4m/s
03:000%2.4m/s
04:000%2.5m/s
05:000%2.5m/s
06:000%2.4m/s
07:000%2m/s
08:000%1.9m/s
09:000%1.5m/s
10:000%0.95m/s
11:000%0.75m/s
12:000%1.6m/s
13:000%2.7m/s
14:000%3.3m/s
15:000%3.9m/s
16:000%4.3m/s
17:000%4.3m/s
18:000%4.1m/s
19:000%4.4m/s
20:000%4.2m/s
21:000%4.1m/s
22:000%3.9m/s
23:000%3.7m/s
Wed, May 27
24:000%4.1m/s
01:000%4.5m/s
02:000%4.9m/s
03:000%5m/s
04:000%5m/s
05:000%5m/s
06:000%4.9m/s
07:000%4.9m/s
08:000%4.8m/s
09:000%5m/s
10:000%5.1m/s
11:000%5.2m/s
12:000%5.2m/s
13:000%5.1m/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
Europe/Amsterdam
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Sun, May 24 Sunrise 05:35 Sunset 21:42
15:00
12°C 9726°C 20°C - 84% 0.92kPa
16:00
12°C 9726°C 20°C - 76% 0.92kPa
17:00
12°C 9726°C 20°C - 64% 0.93kPa
18:00
12°C 9726°C 20°C - 26% 0.99kPa
19:00
12°C 9726°C 21°C - 65% 1.1kPa
20:00
12°C 9726°C 21°C - 46% 1.1kPa
21:00
11°C 9726°C 20°C - 19% 0.98kPa
22:00
11°C 9726°C 19°C - 9% 0.84kPa
23:00
11°C 9726°C 18°C - 11% 0.72kPa
Mon, May 25 Sunrise 05:35 Sunset 21:42
24:00
11°C 9726°C 17°C - 35% 0.62kPa
01:00
12°C 9726°C 17°C - 21% 0.51kPa
02:00
12°C 9726°C 16°C - 5% 0.42kPa
03:00
13°C 9726°C 16°C - 5% 0.34kPa
04:00
13°C 9726°C 15°C - 5% 0.3kPa
05:00
12°C 9726°C 15°C - 5% 0.28kPa
06:00
12°C 9726°C 15°C - 49% 0.29kPa
07:00
12°C 9726°C 15°C - 6% 0.36kPa
08:00
12°C 9726°C 17°C - 5% 0.5kPa
09:00
12°C 9726°C 18°C - 5% 0.67kPa
10:00
12°C 9726°C 19°C - 5% 0.83kPa
11:00
12°C 9726°C 21°C - 5% 0.99kPa
12:00
13°C 9726°C 22°C - 5% 1.1kPa
13:00
13°C 9726°C 22°C - 5% 1.2kPa
14:00
13°C 9726°C 22°C - 5% 1.1kPa
15:00
12°C 9726°C 21°C - 5% 1.1kPa
16:00
12°C 9726°C 21°C - 7% 1kPa
17:00
13°C 9726°C 20°C - 14% 0.89kPa
18:00
13°C 9726°C 20°C - 16% 0.84kPa
19:00
13°C 9726°C 20°C - 14% 0.8kPa
20:00
13°C 9726°C 20°C - 5% 0.77kPa
21:00
14°C 9726°C 20°C - 5% 0.73kPa
22:00
14°C 9726°C 20°C - 5% 0.69kPa
23:00
13°C 9726°C 19°C - 5% 0.69kPa
Tue, May 26 Sunrise 05:34 Sunset 21:44
24:00
12°C 9726°C 18°C - 5% 0.68kPa
01:00
12°C 9726°C 18°C - 0% 0.67kPa
02:00
11°C 9726°C 17°C - 2% 0.64kPa
03:00
12°C 9726°C 17°C - 5% 0.58kPa
04:00
12°C 9726°C 17°C - 5% 0.46kPa
05:00
13°C 9726°C 16°C - 5% 0.36kPa
06:00
13°C 9726°C 16°C - 5% 0.31kPa
07:00
14°C 9726°C 17°C - 2% 0.36kPa
08:00
14°C 9726°C 18°C - 0% 0.5kPa
09:00
14°C 9726°C 19°C - 0% 0.68kPa
10:00
14°C 9726°C 21°C - 0% 0.85kPa
11:00
14°C 9726°C 22°C - 0% 1kPa
12:00
13°C 9726°C 22°C - 0% 1.1kPa
13:00
13°C 9726°C 22°C - 0% 1.1kPa
14:00
13°C 9726°C 22°C - 13% 1.1kPa
15:00
13°C 9726°C 21°C - 17% 1.1kPa
16:00
13°C 9726°C 21°C - 17% 0.98kPa
17:00
13°C 9726°C 20°C - 17% 0.92kPa
18:00
13°C 9726°C 20°C - 17% 0.91kPa
19:00
13°C 9726°C 20°C - 17% 0.81kPa
20:00
13°C 9726°C 19°C - 17% 0.66kPa
21:00
13°C 6490°C 17°C - 22% 0.5kPa
22:00
12°C 3254°C 15°C - 27% 0.36kPa
23:00
11°C 18°C 14°C - 32% 0.24kPa
Wed, May 27 Sunrise 05:33 Sunset 21:45
24:00
11°C 18°C 14°C - 23% 0.35kPa
01:00
9.8°C 18°C 15°C - 14% 0.47kPa
02:00
8.9°C 17°C 15°C - 5% 0.6kPa
03:00
8.4°C 17°C 17°C - 5% 0.8kPa
04:00
7.6°C 18°C 18°C - 5% 1kPa
05:00
6.5°C 18°C 19°C - 5% 1.3kPa
06:00
6.5°C 18°C 20°C - 5% 1.4kPa
07:00
6.5°C 19°C 21°C - 5% 1.6kPa
08:00
6.4°C 19°C 22°C - 5% 1.7kPa
09:00
5.8°C 20°C 22°C - 3% 1.7kPa
10:00
5.1°C 20°C 22°C - 2% 1.8kPa
11:00
4.5°C 21°C 22°C - 0% 1.8kPa
12:00
4.9°C 21°C 21°C - 0% 1.6kPa
13:00
5.1°C 20°C 19°C - 0% 1.4kPa
14:00
5.2°C 20°C 18°C - 0% 1.2kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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