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Rule Morning Frost

Haarlem - Morning Frost - The Netherlands

Haarlem, North 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 89% failing
Time Window 83% failing

Currently

Real-time conditions
Soil Temperature20.6°C
Dew Point14.6°C (moderate dew point)
Wind Speed5.0m/s (moderate winds)
Cloud Cover6%

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 80 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
Wed, Jul 8
06:000%3.7m/s
07:000%4.2m/s
08:000%4.4m/s
09:000%4.3m/s
10:000%4.4m/s
11:000%4.4m/s
12:000%4.8m/s
13:000%5.2m/s
14:000%5.1m/s
15:000%5m/s
16:000%5m/s
17:000%4.8m/s
18:000%4.7m/s
19:000%4.6m/s
20:000%3.9m/s
21:000%3.1m/s
22:000%2.5m/s
23:000%2.2m/s
Thu, Jul 9
24:000%1.6m/s
01:000%1.4m/s
02:000%1.3m/s
03:000%1.3m/s
04:000%1.2m/s
05:000%1.2m/s
06:000%1.1m/s
07:000%1.1m/s
08:000%1.4m/s
09:000%1.6m/s
10:000%1.9m/s
11:000%2.4m/s
12:000%2.8m/s
13:000%3m/s
14:000%3.3m/s
15:000%3.4m/s
16:000%3.4m/s
17:000%3.6m/s
18:000%4.1m/s
19:000%4.6m/s
20:000%4.3m/s
21:000%3.9m/s
22:000%3.4m/s
23:000%3.2m/s
Fri, Jul 10
24:000%3.1m/s
01:000%3m/s
02:000%3m/s
03:000%2.9m/s
04:000%2.7m/s
05:000%2.7m/s
06:000%2.5m/s
07:000%2.2m/s
08:000%2.7m/s
09:000%2.7m/s
10:000%3m/s
11:000%3.1m/s
12:000%3m/s
13:000%2.7m/s
14:000%2.5m/s
15:000%2.9m/s
16:000%3.9m/s
17:000%5.3m/s
18:000%5.8m/s
19:000%5.8m/s
20:000%5.5m/s
21:000%4.9m/s
22:000%4.4m/s
23:000%3.9m/s
Sat, Jul 11
24:000%3.9m/s
01:000%4m/s
02:000%4m/s
03:000%4.5m/s
04:000%4.9m/s
05:000%5.4m/s
06:000%6.3m/s
07:000%7.2m/s
08:000%8m/s
09:000%8.1m/s
10:000%8.2m/s
11:000%8.2m/s
12:000%8.4m/s
13:000%8.6m/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
Wed, Jul 8 Sunrise 05:29 Sunset 22:02
16:00
15°C 21°C 22°C - 6% 0.94kPa
17:00
15°C 21°C 22°C - 5% 0.91kPa
18:00
15°C 21°C 21°C - 5% 0.86kPa
19:00
15°C 21°C 21°C - 5% 0.76kPa
20:00
15°C 21°C 20°C - 5% 0.65kPa
21:00
15°C 21°C 19°C - 5% 0.49kPa
22:00
15°C 20°C 17°C - 5% 0.24kPa
23:00
14°C 20°C 16°C - 5% 0.17kPa
Thu, Jul 9 Sunrise 05:29 Sunset 22:02
24:00
14°C 19°C 16°C - 5% 0.15kPa
01:00
14°C 19°C 15°C - 5% 0.15kPa
02:00
14°C 19°C 15°C - 0% 0.14kPa
03:00
13°C 18°C 15°C - 0% 0.14kPa
04:00
13°C 18°C 15°C - 0% 0.14kPa
05:00
13°C 18°C 15°C - 0% 0.14kPa
06:00
13°C 18°C 15°C - 0% 0.15kPa
07:00
14°C 17°C 16°C - 3% 0.26kPa
08:00
14°C 18°C 18°C - 0% 0.45kPa
09:00
14°C 18°C 20°C - 0% 0.68kPa
10:00
14°C 18°C 21°C - 5% 0.93kPa
11:00
15°C 19°C 23°C - 5% 1.1kPa
12:00
15°C 19°C 24°C - 5% 1.3kPa
13:00
15°C 20°C 25°C - 5% 1.4kPa
14:00
15°C 21°C 25°C - 5% 1.5kPa
15:00
15°C 21°C 26°C - 5% 1.6kPa
16:00
15°C 22°C 26°C - 5% 1.6kPa
17:00
15°C 22°C 26°C - 5% 1.6kPa
18:00
15°C 22°C 26°C - 5% 1.6kPa
19:00
15°C 22°C 25°C - 5% 1.5kPa
20:00
15°C 22°C 24°C - 6% 1.2kPa
21:00
15°C 22°C 21°C - 100% 0.8kPa
22:00
15°C 22°C 18°C - 100% 0.42kPa
23:00
15°C 21°C 18°C - 100% 0.31kPa
Fri, Jul 10 Sunrise 05:30 Sunset 22:01
24:00
15°C 21°C 17°C - 100% 0.28kPa
01:00
15°C 21°C 17°C - 100% 0.24kPa
02:00
15°C 20°C 17°C - 100% 0.2kPa
03:00
15°C 20°C 16°C - 100% 0.18kPa
04:00
14°C 20°C 16°C - 98% 0.18kPa
05:00
14°C 19°C 16°C - 96% 0.18kPa
06:00
14°C 19°C 15°C - 18% 0.19kPa
07:00
14°C 19°C 17°C - 5% 0.32kPa
08:00
14°C 19°C 19°C - 5% 0.59kPa
09:00
14°C 19°C 21°C - 4% 0.87kPa
10:00
14°C 19°C 23°C - 1% 1.1kPa
11:00
14°C 20°C 24°C - 1% 1.3kPa
12:00
14°C 20°C 25°C - 24% 1.5kPa
13:00
15°C 21°C 26°C - 18% 1.7kPa
14:00
15°C 21°C 27°C - 7% 1.8kPa
15:00
15°C 22°C 27°C - 20% 1.9kPa
16:00
15°C 22°C 28°C - 9% 2kPa
17:00
15°C 23°C 27°C - 1% 1.9kPa
18:00
15°C 23°C 26°C - 0% 1.7kPa
19:00
15°C 23°C 24°C - 0% 1.4kPa
20:00
15°C 23°C 23°C - 0% 1.1kPa
21:00
15°C 3257°C 21°C - 1% 0.72kPa
22:00
15°C 6492°C 19°C - 2% 0.44kPa
23:00
15°C 9726°C 17°C - 3% 0.21kPa
Sat, Jul 11 Sunrise 05:31 Sunset 22:01
24:00
15°C 9726°C 17°C - 4% 0.22kPa
01:00
15°C 9726°C 17°C - 4% 0.23kPa
02:00
15°C 9726°C 17°C - 5% 0.25kPa
03:00
15°C 9726°C 18°C - 5% 0.28kPa
04:00
16°C 9726°C 18°C - 5% 0.32kPa
05:00
16°C 9726°C 19°C - 5% 0.37kPa
06:00
16°C 9726°C 18°C - 5% 0.35kPa
07:00
16°C 9726°C 18°C - 5% 0.33kPa
08:00
16°C 9726°C 18°C - 5% 0.32kPa
09:00
16°C 9726°C 18°C - 4% 0.35kPa
10:00
16°C 9726°C 19°C - 4% 0.37kPa
11:00
16°C 9726°C 19°C - 3% 0.4kPa
12:00
16°C 9726°C 19°C - 4% 0.44kPa
13:00
16°C 9726°C 19°C - 4% 0.47kPa
14:00
16°C 9726°C 20°C - 5% 0.51kPa
15:00
16°C 9726°C 19°C - 5% 0.39kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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