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Rule Morning Frost

Delft - Morning Frost - The Netherlands

Delft, 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 99% failing
Time Window 88% failing

Currently

Real-time conditions
Soil Temperature12.4°C
Dew Point3.5°C (low dew point)
Wind Speed2.9m/s (calm conditions)
Cloud Cover66%

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
03:000%4.3m/s
04:000%4.3m/s
05:000%4.2m/s
06:000%3.7m/s
07:000%3.6m/s
08:000%3.8m/s
09:000%4.1m/s
10:000%4.3m/s
11:000%3.9m/s
12:000%4m/s
13:000%3.5m/s
14:000%3.5m/s
15:000%2.7m/s
16:000%2.7m/s
17:000%3.2m/s
18:000%3.7m/s
19:000%3.7m/s
20:000%3.5m/s
21:000%3.7m/s
22:000%4m/s
23:000%3.9m/s
Thu, Apr 9
24:000%3.7m/s
01:000%3.5m/s
02:000%3.4m/s
03:000%3.3m/s
04:000%2.9m/s
05:000%2.8m/s
06:000%2.8m/s
07:000%2.8m/s
08:000%2.7m/s
09:000%2.9m/s
10:000%3.2m/s
11:000%3.5m/s
12:000%3.7m/s
13:000%4.2m/s
14:000%4.4m/s
15:000%4.4m/s
16:000%4.8m/s
17:000%3.7m/s
18:000%3.4m/s
19:000%2.8m/s
20:000%4m/s
21:000%5.1m/s
22:000%3.6m/s
23:000%9.3m/s
Fri, Apr 10
24:000%6.5m/s
01:000%5.2m/s
02:000%6.3m/s
03:000%6.6m/s
04:000%7m/s
05:000%7m/s
06:000%6.4m/s
07:000%5.7m/s
08:000%4.7m/s
09:000%4.1m/s
10:000%3.4m/s
11:000%2.9m/s
12:000%2.3m/s
13:000%2.9m/s
14:000%2.8m/s
15:000%3.1m/s
16:000%3.2m/s
17:000%2.6m/s
18:000%2.4m/s
19:000%1.7m/s
20:000%1.4m/s
21:000%2.3m/s
22:000%2.9m/s
23:000%3.6m/s
Sat, Apr 11
24:000%3.9m/s
01:000%4.5m/s
02:000%4.6m/s
03:000%4.5m/s
04:000%4.9m/s
05:000%4.8m/s
06:000%4.8m/s
07:000%5.2m/s
08:000%5.4m/s
09:000%5.9m/s
10:000%6.5m/s
11:000%7.1m/s
12:000%6.9m/s
13:000%6.6m/s
14:000%6.4m/s
15:000%5.2m/s
16:000%4m/s
17:000%2.8m/s
18:000%3.3m/s
19:000%3.7m/s
20:000%4.1m/s
21:000%4.2m/s
22:000%4.2m/s
23:000%4.3m/s
Sun, Apr 12
24:002.8%4.4m/s
01:002.8%4.5m/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
Thu, Apr 9 Sunrise 06:59 Sunset 20:29
04:00
3.5°C 12°C 11°C - 66% 0.53kPa
05:00
3.6°C 12°C 11°C - 66% 0.5kPa
06:00
3.8°C 12°C 11°C - 100% 0.47kPa
07:00
3.9°C 11°C 10°C - 89% 0.45kPa
08:00
4.1°C 11°C 11°C - 100% 0.46kPa
09:00
4.7°C 12°C 12°C - 100% 0.57kPa
10:00
5.5°C 12°C 14°C - 100% 0.69kPa
11:00
7°C 14°C 16°C - 88% 0.76kPa
12:00
8.3°C 15°C 17°C - 53% 0.82kPa
13:00
8.7°C 17°C 17°C - 100% 0.85kPa
14:00
9°C 18°C 17°C - 100% 0.84kPa
15:00
9.4°C 19°C 17°C - 100% 0.76kPa
16:00
10°C 19°C 16°C - 100% 0.62kPa
17:00
11°C 19°C 16°C - 100% 0.52kPa
18:00
10°C 18°C 15°C - 100% 0.47kPa
19:00
9.9°C 18°C 14°C - 100% 0.42kPa
20:00
10°C 17°C 14°C - 100% 0.33kPa
21:00
11°C 16°C 13°C - 100% 0.15kPa
22:00
9.7°C 15°C 12°C - 100% 0.22kPa
23:00
8.6°C 15°C 11°C - 100% 0.16kPa
Fri, Apr 10 Sunrise 06:59 Sunset 20:29
24:00
6.1°C 13°C 9.4°C - 100% 0.23kPa
01:00
5.8°C 13°C 9.3°C - 94% 0.25kPa
02:00
6°C 12°C 9°C - 100% 0.21kPa
03:00
5°C 11°C 8.8°C - 100% 0.25kPa
04:00
4.4°C 11°C 8.5°C - 100% 0.27kPa
05:00
3.3°C 10°C 8.1°C - 100% 0.31kPa
06:00
2°C 9.9°C 7.9°C - 100% 0.36kPa
07:00
1.6°C 9.6°C 7.7°C - 100% 0.36kPa
08:00
1.8°C 9.4°C 7.8°C - 100% 0.36kPa
09:00
2.1°C 9.4°C 7.9°C - 100% 0.36kPa
10:00
2.1°C 9.7°C 8.2°C - 100% 0.38kPa
11:00
1.9°C 10°C 8.7°C - 100% 0.42kPa
12:00
1.6°C 11°C 9.2°C - 100% 0.48kPa
13:00
1.7°C 12°C 9.5°C - 98% 0.5kPa
14:00
1.5°C 12°C 9.8°C - 99% 0.53kPa
15:00
1.5°C 13°C 10°C - 89% 0.55kPa
16:00
1.5°C 13°C 10°C - 95% 0.55kPa
17:00
1.5°C 13°C 9.8°C - 100% 0.53kPa
18:00
1.4°C 13°C 9.6°C - 100% 0.52kPa
19:00
1.3°C 13°C 9.5°C - 100% 0.51kPa
20:00
1.4°C 12°C 9.4°C - 100% 0.5kPa
21:00
1.7°C 12°C 9.3°C - 100% 0.48kPa
22:00
2.1°C 11°C 8.9°C - 100% 0.43kPa
23:00
2.5°C 11°C 8.7°C - 100% 0.39kPa
Sat, Apr 11 Sunrise 06:57 Sunset 20:31
24:00
1.9°C 10°C 8.8°C - 100% 0.43kPa
01:00
1.2°C 10°C 9.2°C - 100% 0.49kPa
02:00
1.1°C 10°C 9.1°C - 100% 0.49kPa
03:00
1.2°C 9.8°C 9°C - 100% 0.48kPa
04:00
1.1°C 9.7°C 8.8°C - 100% 0.47kPa
05:00
1.6°C 9.6°C 8.7°C - 100% 0.44kPa
06:00
2.5°C 9.5°C 9°C - 100% 0.41kPa
07:00
2.8°C 9.5°C 9.1°C - 100% 0.4kPa
08:00
3°C 9.5°C 9.3°C - 100% 0.41kPa
09:00
5.4°C 11°C 10°C - 100% 0.33kPa
10:00
7.6°C 11°C 11°C - 100% 0.25kPa
11:00
9.7°C 12°C 11°C - 100% 0.15kPa
12:00
8.5°C 12°C 11°C - 100% 0.19kPa
13:00
7.2°C 12°C 10°C - 100% 0.23kPa
14:00
5.9°C 11°C 9.7°C - 100% 0.27kPa
15:00
5.4°C 11°C 9.1°C - 100% 0.26kPa
16:00
4.9°C 10°C 8.5°C - 100% 0.24kPa
17:00
4.4°C 9.9°C 7.9°C - 100% 0.23kPa
18:00
3.8°C 9.6°C 7.7°C - 100% 0.25kPa
19:00
3.1°C 9.3°C 7.5°C - 100% 0.27kPa
20:00
2.5°C 9°C 7.3°C - 100% 0.29kPa
21:00
2.1°C 8.7°C 6.9°C - 100% 0.28kPa
22:00
1.8°C 8.5°C 6.5°C - 100% 0.27kPa
23:00
1.4°C 8.2°C 6.1°C - 100% 0.26kPa
Sun, Apr 12 Sunrise 06:55 Sunset 20:33
24:00
1.4°C 7.9°C 6°C - 100% 0.26kPa
01:00
1.4°C 7.7°C 5.9°C - 100% 0.25kPa
02:00
1.3°C 7.4°C 5.8°C - 100% 0.25kPa
03:00
1.8°C 7.7°C 6.9°C - 100% 0.3kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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