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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 100% failing
Time Window 83% failing

Currently

Real-time conditions
Soil Temperature8.2°C
Dew Point7.8°C (moderate dew point)
Wind Speed6.8m/s (moderate winds)
Cloud Cover100%

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, Feb 21
20:000.6%7.1m/s
21:000.6%6.8m/s
22:000.6%7.4m/s
23:000.6%9m/s
Sun, Feb 22
24:000.6%9.7m/s
01:000.6%10m/s
02:000.6%9.4m/s
03:000.6%9m/s
04:000.6%9m/s
05:000.6%8.2m/s
06:000.6%8.2m/s
07:000.6%8.2m/s
08:000.6%8.2m/s
09:000.6%9.1m/s
10:000.6%9.3m/s
11:000.6%10m/s
12:000.6%10m/s
13:000%10m/s
14:000%9.4m/s
15:000%8.5m/s
16:000%7.9m/s
17:000%6.9m/s
18:000%6.4m/s
19:000%7.2m/s
20:000%6.8m/s
21:000%7m/s
22:000.6%7.9m/s
23:001.3%7.7m/s
Mon, Feb 23
24:001.3%8m/s
01:002.5%7.7m/s
02:002.1%8m/s
03:002.1%8.1m/s
04:002.5%8.2m/s
05:002.1%8.3m/s
06:001.4%8.1m/s
07:001%8.4m/s
08:002.8%8.8m/s
09:002.8%9.3m/s
10:001.3%9.7m/s
11:001.3%9.5m/s
12:001.8%9.9m/s
13:001.3%10m/s
14:000%10m/s
15:000%10m/s
16:000%9.7m/s
17:000%9.3m/s
18:000%8.3m/s
19:001%7.2m/s
20:001%6.6m/s
21:000.6%6.2m/s
22:000.6%5.8m/s
23:000.8%5.3m/s
Tue, Feb 24
24:000.8%4.6m/s
01:001%4m/s
02:001%3.5m/s
03:001%2.9m/s
04:001.2%2.3m/s
05:001.2%1.8m/s
06:001.2%1.8m/s
07:001.2%2.1m/s
08:001.2%2.5m/s
09:001%3m/s
10:001%3.1m/s
11:001%3.4m/s
12:001.1%3.9m/s
13:000%4.7m/s
14:000%4.8m/s
15:000%5.1m/s
16:000%4.7m/s
17:000%4.2m/s
18:000%3.7m/s
19:000%2.8m/s
20:000%2.4m/s
21:000%3.2m/s
22:000%3.6m/s
23:000%3.9m/s
Wed, Feb 25
24:000%3.9m/s
01:002.1%4.2m/s
02:000%4.7m/s
03:000%5.1m/s
04:000%5.6m/s
05:000%5.6m/s
06:000%5.5m/s
07:000%5.4m/s
08:000%5.4m/s
09:000%5.4m/s
10:000%5.4m/s
11:000%5.4m/s
12:000%5.3m/s
13:000%5.2m/s
14:000%5.5m/s
15:000%5.7m/s
16:000%6m/s
17:000%6.1m/s
18:000%6.3m/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, Feb 22 Sunrise 07:43 Sunset 18:07
20:00
7.8°C 8.2°C 8.3°C - 100% 0.04kPa
21:00
7.7°C 8°C 8.2°C - 100% 0.03kPa
22:00
7.4°C 7.9°C 8.4°C - 100% 0.07kPa
23:00
6.9°C 7.8°C 8.5°C - 100% 0.12kPa
Mon, Feb 23 Sunrise 07:43 Sunset 18:07
24:00
6.6°C 7.7°C 8.3°C - 88% 0.11kPa
01:00
6.5°C 7.6°C 7.9°C - 4% 0.1kPa
02:00
6.8°C 7.4°C 7.7°C - 8% 0.07kPa
03:00
6.8°C 7.3°C 7.6°C - 8% 0.06kPa
04:00
6.3°C 7.1°C 7.6°C - 7% 0.09kPa
05:00
5.8°C 7°C 7.3°C - 24% 0.1kPa
06:00
5.8°C 6.8°C 7.1°C - 53% 0.09kPa
07:00
5.5°C 6.7°C 7.1°C - 100% 0.1kPa
08:00
5.1°C 6.6°C 7.2°C - 5% 0.14kPa
09:00
5.2°C 6.6°C 7.6°C - 5% 0.16kPa
10:00
5.6°C 6.8°C 8.2°C - 90% 0.17kPa
11:00
5.8°C 7.1°C 8.6°C - 100% 0.2kPa
12:00
5.8°C 7.5°C 8.8°C - 100% 0.21kPa
13:00
6°C 7.8°C 8.8°C - 100% 0.2kPa
14:00
6°C 8.1°C 8.8°C - 100% 0.2kPa
15:00
6.1°C 8.3°C 8.8°C - 100% 0.19kPa
16:00
6.2°C 8.3°C 8.6°C - 100% 0.17kPa
17:00
6.2°C 8.2°C 8.4°C - 100% 0.15kPa
18:00
6.3°C 8.1°C 7.9°C - 100% 0.11kPa
19:00
6.5°C 7.9°C 7.7°C - 100% 0.09kPa
20:00
6.6°C 7.7°C 7.7°C - 100% 0.08kPa
21:00
6.9°C 7.6°C 7.8°C - 100% 0.06kPa
22:00
7°C 7.5°C 7.7°C - 100% 0.04kPa
23:00
7°C 7.4°C 7.6°C - 100% 0.04kPa
Tue, Feb 24 Sunrise 07:41 Sunset 18:09
24:00
7°C 7.3°C 7.6°C - 100% 0.04kPa
01:00
6.9°C 7.2°C 7.4°C - 100% 0.03kPa
02:00
6.8°C 7.2°C 7.3°C - 100% 0.03kPa
03:00
7°C 7.1°C 7.4°C - 100% 0.03kPa
04:00
7.1°C 7.1°C 7.4°C - 100% 0.02kPa
05:00
7.2°C 7.1°C 7.5°C - 100% 0.03kPa
06:00
7.2°C 7°C 7.7°C - 100% 0.03kPa
07:00
7.5°C 7°C 7.9°C - 100% 0.03kPa
08:00
7.7°C 7.1°C 8.1°C - 100% 0.03kPa
09:00
8°C 7.2°C 8.3°C - 100% 0.02kPa
10:00
8.5°C 7.3°C 8.8°C - 100% 0.02kPa
11:00
8.5°C 7.5°C 8.7°C - 97% 0.01kPa
12:00
8.7°C 7.7°C 9.2°C - 70% 0.03kPa
13:00
9°C 8.3°C 11°C - 96% 0.14kPa
14:00
8.9°C 9°C 11°C - 100% 0.16kPa
15:00
8.7°C 9.3°C 9.9°C - 100% 0.1kPa
16:00
8°C 9.4°C 9.1°C - 98% 0.09kPa
17:00
7.8°C 9.3°C 9.1°C - 89% 0.1kPa
18:00
7.7°C 9.1°C 8.7°C - 72% 0.07kPa
19:00
7.8°C 8.9°C 8.5°C - 30% 0.05kPa
20:00
7.6°C 8.6°C 8.3°C - 5% 0.05kPa
21:00
7.9°C 8.3°C 8.6°C - 13% 0.05kPa
22:00
8.2°C 8.2°C 9°C - 5% 0.06kPa
23:00
8.3°C 8.1°C 9.1°C - 10% 0.06kPa
Wed, Feb 25 Sunrise 07:39 Sunset 18:11
24:00
8.2°C 8°C 9.1°C - 5% 0.07kPa
01:00
8.2°C 7.9°C 9.1°C - 18% 0.07kPa
02:00
7.5°C 3247°C 8.7°C - 12% 0.09kPa
03:00
6.9°C 6487°C 8.3°C - 6% 0.1kPa
04:00
6.3°C 9726°C 8°C - 0% 0.12kPa
05:00
6.5°C 9726°C 8.8°C - 0% 0.16kPa
06:00
6.8°C 9726°C 9.6°C - 1% 0.2kPa
07:00
7°C 9726°C 10°C - 2% 0.26kPa
08:00
7.1°C 9726°C 11°C - 13% 0.28kPa
09:00
7.2°C 9726°C 11°C - 25% 0.31kPa
10:00
7.3°C 9726°C 11°C - 37% 0.33kPa
11:00
7.5°C 9726°C 11°C - 30% 0.29kPa
12:00
7.6°C 9726°C 11°C - 23% 0.24kPa
13:00
7.8°C 9726°C 10°C - 16% 0.2kPa
14:00
7.8°C 9726°C 10°C - 11% 0.18kPa
15:00
7.8°C 9726°C 9.9°C - 6% 0.16kPa
16:00
7.9°C 9726°C 9.7°C - 2% 0.14kPa
17:00
7.9°C 9726°C 9.4°C - 3% 0.11kPa
18:00
8°C 9726°C 9.2°C - 4% 0.09kPa
19:00
8.1°C 9726°C 9°C - 5% 0.07kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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