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Rule Morning Frost

Alkmaar - Morning Frost - The Netherlands

Alkmaar, 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 100% failing
Time Window 88% failing

Currently

Real-time conditions
Soil Temperature9.5°C
Dew Point3.2°C (low dew point)
Wind Speed4.1m/s (calm conditions)
Cloud Cover99%

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
Wed, Apr 8
03:003%4.3m/s
04:003%4.6m/s
05:003%4.5m/s
06:003.2%4.1m/s
07:003%4.3m/s
08:001.9%4.4m/s
09:003.9%4.7m/s
10:003%5.4m/s
11:003%5.4m/s
12:002.7%5.4m/s
13:000%5.4m/s
14:000%5.6m/s
15:000%5.3m/s
16:000%5.3m/s
17:000%5.1m/s
18:000%5m/s
19:000%4.9m/s
20:000%4.4m/s
21:000%4.6m/s
22:000%4.3m/s
23:000%4.4m/s
Thu, Apr 9
24:000%4.6m/s
01:000%4.5m/s
02:000%4.3m/s
03:000%4.3m/s
04:000%4.1m/s
05:000%4.1m/s
06:000%3.9m/s
07:000%3.8m/s
08:000%4m/s
09:000%4.6m/s
10:000%5.2m/s
11:000%5.5m/s
12:000%5.4m/s
13:000%5.2m/s
14:000%5.8m/s
15:000%6.4m/s
16:000%6.5m/s
17:000%5.9m/s
18:000%5.5m/s
19:000%4.2m/s
20:000%3.9m/s
21:000%3.9m/s
22:000%4.9m/s
23:000%9.1m/s
Fri, Apr 10
24:000%7.5m/s
01:000%6.1m/s
02:000%7.3m/s
03:000%8m/s
04:000%7.9m/s
05:000%7.3m/s
06:000%6.8m/s
07:000%6m/s
08:000%5.2m/s
09:000%4.6m/s
10:000%4.8m/s
11:000%3.7m/s
12:000%3.3m/s
13:000%2.6m/s
14:000%2.5m/s
15:000%2.9m/s
16:000%3.1m/s
17:000%2.1m/s
18:000%1.6m/s
19:000%2.2m/s
20:000%3.1m/s
21:000%3.4m/s
22:000%3.1m/s
23:000%3.2m/s
Sat, Apr 11
24:000%4.6m/s
01:000%5.4m/s
02:000%5.3m/s
03:000%4.9m/s
04:002.8%4.9m/s
05:002.8%5.6m/s
06:002.6%6.1m/s
07:002.6%6.3m/s
08:002.6%6.2m/s
09:000%7.5m/s
10:000%8.9m/s
11:000%10m/s
12:000%10m/s
13:000%9.7m/s
14:000%9.4m/s
15:000%8.2m/s
16:000%7.1m/s
17:000%5.9m/s
18:000%6.8m/s
19:000%7.6m/s
20:000%8.4m/s
21:000%8.9m/s
22:000%9.4m/s
23:000%9.9m/s
Sun, Apr 12
24:000%10m/s
01:000%10m/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
Thu, Apr 9 Sunrise 06:57 Sunset 20:29
04:00
3.2°C 9.5°C 8.2°C - 99% 0.32kPa
05:00
3.2°C 9.3°C 7.9°C - 96% 0.3kPa
06:00
3.3°C 9.1°C 7.6°C - 99% 0.27kPa
07:00
3.5°C 9°C 7.7°C - 100% 0.26kPa
08:00
4.9°C 8.8°C 8.5°C - 100% 0.24kPa
09:00
6.1°C 8.9°C 10°C - 100% 0.32kPa
10:00
6.5°C 9.1°C 12°C - 88% 0.46kPa
11:00
7.3°C 9.5°C 15°C - 39% 0.64kPa
12:00
7.8°C 10°C 16°C - 6% 0.81kPa
13:00
8.6°C 11°C 18°C - 100% 0.91kPa
14:00
9.1°C 11°C 18°C - 100% 0.86kPa
15:00
10°C 12°C 16°C - 100% 0.61kPa
16:00
11°C 12°C 15°C - 100% 0.4kPa
17:00
11°C 12°C 15°C - 100% 0.38kPa
18:00
10°C 12°C 13°C - 100% 0.29kPa
19:00
10°C 12°C 12°C - 100% 0.19kPa
20:00
10°C 12°C 12°C - 100% 0.14kPa
21:00
9.9°C 12°C 11°C - 100% 0.1kPa
22:00
9.5°C 12°C 11°C - 100% 0.1kPa
23:00
7.5°C 12°C 8.9°C - 100% 0.1kPa
Fri, Apr 10 Sunrise 06:57 Sunset 20:29
24:00
6.5°C 11°C 8.3°C - 100% 0.13kPa
01:00
6.4°C 11°C 8.1°C - 100% 0.12kPa
02:00
6°C 11°C 8.2°C - 100% 0.15kPa
03:00
4.9°C 11°C 7.5°C - 100% 0.17kPa
04:00
4.5°C 10°C 7.2°C - 100% 0.17kPa
05:00
4.1°C 9.9°C 6.9°C - 100% 0.18kPa
06:00
2.9°C 9.6°C 6.4°C - 92% 0.21kPa
07:00
2.5°C 9.3°C 6.1°C - 100% 0.21kPa
08:00
3°C 9°C 6.3°C - 100% 0.2kPa
09:00
3.4°C 8.8°C 7.1°C - 100% 0.23kPa
10:00
3.2°C 8.8°C 7.6°C - 100% 0.28kPa
11:00
3.1°C 8.9°C 8.3°C - 100% 0.33kPa
12:00
2.9°C 9°C 8.7°C - 100% 0.37kPa
13:00
2.7°C 9.3°C 9°C - 100% 0.41kPa
14:00
2.5°C 9.6°C 9.4°C - 100% 0.44kPa
15:00
2.7°C 9.7°C 9.5°C - 92% 0.44kPa
16:00
3°C 9.8°C 9°C - 94% 0.39kPa
17:00
2.8°C 9.9°C 9.1°C - 100% 0.41kPa
18:00
2.9°C 10°C 9.1°C - 75% 0.4kPa
19:00
3.1°C 10°C 8.7°C - 95% 0.36kPa
20:00
3.4°C 9.8°C 7.1°C - 100% 0.23kPa
21:00
2.6°C 9.4°C 5.6°C - 100% 0.17kPa
22:00
2.3°C 9°C 5.4°C - 100% 0.18kPa
23:00
2.2°C 8.8°C 5.8°C - 100% 0.2kPa
Sat, Apr 11 Sunrise 06:54 Sunset 20:30
24:00
3°C 8.5°C 6.6°C - 100% 0.22kPa
01:00
2.9°C 8.3°C 6.6°C - 100% 0.22kPa
02:00
2.5°C 8.2°C 6.7°C - 100% 0.25kPa
03:00
2.4°C 8°C 6.4°C - 100% 0.23kPa
04:00
2.2°C 7.8°C 6.1°C - 100% 0.22kPa
05:00
1.8°C 7.7°C 6.1°C - 100% 0.24kPa
06:00
1.7°C 7.5°C 6.3°C - 100% 0.26kPa
07:00
2.1°C 7.4°C 6.9°C - 100% 0.28kPa
08:00
3°C 7.4°C 7.5°C - 100% 0.28kPa
09:00
5.1°C 3247°C 8.3°C - 100% 0.21kPa
10:00
7.2°C 6486°C 9.1°C - 100% 0.14kPa
11:00
9.2°C 9726°C 9.9°C - 100% 0.05kPa
12:00
8.3°C 9726°C 9.7°C - 100% 0.11kPa
13:00
7.5°C 9726°C 9.6°C - 100% 0.16kPa
14:00
6.6°C 9726°C 9.4°C - 100% 0.21kPa
15:00
5.6°C 9726°C 8.8°C - 100% 0.22kPa
16:00
4.7°C 9726°C 8.3°C - 100% 0.24kPa
17:00
3.7°C 9726°C 7.7°C - 100% 0.25kPa
18:00
4°C 9726°C 8°C - 100% 0.26kPa
19:00
4.2°C 9726°C 8.3°C - 100% 0.27kPa
20:00
4.4°C 9726°C 8.6°C - 100% 0.28kPa
21:00
4.5°C 9726°C 8.6°C - 100% 0.27kPa
22:00
4.6°C 9726°C 8.5°C - 100% 0.26kPa
23:00
4.7°C 9726°C 8.5°C - 100% 0.25kPa
Sun, Apr 12 Sunrise 06:52 Sunset 20:32
24:00
4.4°C 9726°C 8.1°C - 100% 0.25kPa
01:00
4°C 9726°C 7.8°C - 100% 0.24kPa
02:00
3.7°C 9726°C 7.4°C - 100% 0.24kPa
03:00
3.7°C 9726°C 7.5°C - 99% 0.24kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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