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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 83% failing

Currently

Real-time conditions
Soil Temperature10.9°C
Dew Point6.8°C (moderate dew point)
Wind Speed5.1m/s (moderate winds)
Cloud Cover4%

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
Fri, Apr 17
15:000%5m/s
16:000%5.1m/s
17:000%5.4m/s
18:000%4.8m/s
19:000%3.8m/s
20:000%3.5m/s
21:000%2.8m/s
22:000%3m/s
23:000%3m/s
Sat, Apr 18
24:000%3.1m/s
01:000%3.3m/s
02:000%3.4m/s
03:000%3.2m/s
04:000%3.1m/s
05:000%3.1m/s
06:000%3.4m/s
07:000%3.4m/s
08:000%3.5m/s
09:000%4.1m/s
10:000%5.4m/s
11:000%4.6m/s
12:000%5.3m/s
13:000%4.1m/s
14:000%2.7m/s
15:000%5.1m/s
16:000%5.6m/s
17:000%5.2m/s
18:000%5m/s
19:000%4.3m/s
20:000%3.4m/s
21:000%2.8m/s
22:000%2.5m/s
23:000%2.6m/s
Sun, Apr 19
24:000%2.9m/s
01:000%3.3m/s
02:000%3.6m/s
03:000%4.4m/s
04:000%6.1m/s
05:000%6.9m/s
06:000%6.7m/s
07:000%6.7m/s
08:000%6.7m/s
09:000%6.2m/s
10:000%6.4m/s
11:000%6.2m/s
12:000%6.4m/s
13:000%6.7m/s
14:000%6.4m/s
15:000%6.4m/s
16:000%6.4m/s
17:000%6.4m/s
18:000%6.3m/s
19:000%5.5m/s
20:000%4.7m/s
21:000%4.2m/s
22:000%4m/s
23:000%4m/s
Mon, Apr 20
24:000%3.6m/s
01:000%3.5m/s
02:000%3.4m/s
03:000%3.2m/s
04:002.6%3m/s
05:003.2%2.7m/s
06:003.6%2.8m/s
07:003.7%2.7m/s
08:004.3%2.5m/s
09:004.9%2.7m/s
10:004.9%2.5m/s
11:004.6%2.4m/s
12:000%2.5m/s
13:000%3m/s
14:000%3.9m/s
15:000%4.7m/s
16:000%5.7m/s
17:000%6.1m/s
18:000%6.3m/s
19:000%6m/s
20:000%5.6m/s
21:000%6.2m/s
22:000%6.7m/s
23:000%7.3m/s
Tue, Apr 21
24:000%7.2m/s
01:000%7.2m/s
02:000%7.1m/s
03:000%7.3m/s
04:000%7.5m/s
05:000%7.6m/s
06:000%7.5m/s
07:000%7.3m/s
08:000%7.1m/s
09:000%7.2m/s
10:000%7.2m/s
11:000%7.2m/s
12:000%6.8m/s
13:000%6.5m/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
Sat, Apr 18 Sunrise 06:36 Sunset 20:44
15:00
6.8°C 11°C 12°C - 4% 0.46kPa
16:00
6.3°C 11°C 12°C - 0% 0.46kPa
17:00
6°C 11°C 12°C - 0% 0.45kPa
18:00
6.3°C 11°C 11°C - 0% 0.37kPa
19:00
6.3°C 11°C 11°C - 0% 0.32kPa
20:00
6.7°C 11°C 9.3°C - 4% 0.19kPa
21:00
6.3°C 11°C 7.6°C - 5% 0.09kPa
22:00
6°C 11°C 7.3°C - 53% 0.08kPa
23:00
6°C 10°C 7.3°C - 100% 0.09kPa
Sun, Apr 19 Sunrise 06:36 Sunset 20:44
24:00
6.1°C 10°C 7.5°C - 5% 0.09kPa
01:00
5.9°C 9.7°C 7.3°C - 5% 0.1kPa
02:00
5.8°C 9.5°C 7.4°C - 74% 0.1kPa
03:00
6.1°C 9.3°C 8.8°C - 100% 0.19kPa
04:00
6.5°C 9.3°C 9.2°C - 99% 0.19kPa
05:00
5.6°C 9.2°C 8.3°C - 15% 0.18kPa
06:00
4.8°C 9°C 7.3°C - 5% 0.16kPa
07:00
4.6°C 8.8°C 7.5°C - 65% 0.19kPa
08:00
4.3°C 8.8°C 8.6°C - 89% 0.29kPa
09:00
4.3°C 8.8°C 9.4°C - 72% 0.34kPa
10:00
5°C 9°C 9.8°C - 81% 0.33kPa
11:00
5.2°C 9.2°C 10°C - 12% 0.38kPa
12:00
5.2°C 9.4°C 11°C - 5% 0.41kPa
13:00
4.5°C 9.7°C 11°C - 37% 0.46kPa
14:00
4°C 10°C 11°C - 38% 0.49kPa
15:00
3.9°C 10°C 11°C - 14% 0.49kPa
16:00
3.9°C 10°C 10°C - 18% 0.46kPa
17:00
3.9°C 11°C 10°C - 9% 0.42kPa
18:00
3.8°C 11°C 9.4°C - 5% 0.37kPa
19:00
3.8°C 10°C 8.7°C - 3% 0.32kPa
20:00
3.9°C 10°C 7.7°C - 4% 0.24kPa
21:00
3.2°C 10°C 6.3°C - 5% 0.18kPa
22:00
2.6°C 9.7°C 5.9°C - 5% 0.19kPa
23:00
2.3°C 9.3°C 5.6°C - 5% 0.19kPa
Mon, Apr 20 Sunrise 06:34 Sunset 20:46
24:00
2°C 9°C 5.4°C - 5% 0.19kPa
01:00
1.6°C 8.7°C 5.1°C - 5% 0.19kPa
02:00
1.3°C 8.4°C 4.9°C - 5% 0.2kPa
03:00
1°C 8.1°C 4.7°C - 22% 0.2kPa
04:00
0.8°C 7.7°C 4.6°C - 78% 0.2kPa
05:00
0.5°C 7.5°C 5.4°C - 100% 0.26kPa
06:00
0.1°C 7.4°C 6.2°C - 100% 0.33kPa
07:00
0.1°C 7.2°C 6.3°C - 66% 0.34kPa
08:00
1.1°C 7.2°C 6.9°C - 24% 0.33kPa
09:00
0.4°C 7.3°C 8.5°C - 5% 0.48kPa
10:00
0°C 7.5°C 9.2°C - 5% 0.55kPa
11:00
0°C 7.8°C 10°C - 5% 0.61kPa
12:00
0.3°C 8.2°C 11°C - 17% 0.66kPa
13:00
0.6°C 8.7°C 11°C - 88% 0.69kPa
14:00
1.2°C 9.1°C 11°C - 61% 0.69kPa
15:00
1.6°C 9.4°C 11°C - 54% 0.65kPa
16:00
2.1°C 9.7°C 11°C - 38% 0.6kPa
17:00
2.5°C 9.9°C 11°C - 5% 0.54kPa
18:00
3.9°C 10°C 10°C - 26% 0.42kPa
19:00
5.1°C 9.9°C 9.3°C - 87% 0.29kPa
20:00
5.3°C 9.8°C 8.2°C - 54% 0.2kPa
21:00
4.3°C 3248°C 7.4°C - 36% 0.19kPa
22:00
3.3°C 6487°C 6.5°C - 18% 0.19kPa
23:00
2.4°C 9726°C 5.7°C - 0% 0.19kPa
Tue, Apr 21 Sunrise 06:32 Sunset 20:48
24:00
2.2°C 9726°C 5.6°C - 1% 0.19kPa
01:00
2°C 9726°C 5.5°C - 1% 0.2kPa
02:00
1.8°C 9726°C 5.5°C - 2% 0.2kPa
03:00
1.7°C 9726°C 6.3°C - 1% 0.26kPa
04:00
1.5°C 9726°C 7.1°C - 1% 0.33kPa
05:00
1.1°C 9726°C 7.9°C - 0% 0.4kPa
06:00
1.6°C 9726°C 8.6°C - 1% 0.43kPa
07:00
2.1°C 9726°C 9.3°C - 1% 0.46kPa
08:00
2.5°C 9726°C 10°C - 2% 0.5kPa
09:00
2.5°C 9726°C 10°C - 2% 0.53kPa
10:00
2.5°C 9726°C 11°C - 2% 0.57kPa
11:00
2.4°C 9726°C 11°C - 2% 0.61kPa
12:00
3°C 9726°C 11°C - 1% 0.56kPa
13:00
3.5°C 9726°C 11°C - 1% 0.52kPa
14:00
4°C 9726°C 11°C - 0% 0.48kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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