Skip to content
Rule Morning Frost

Matterhorn - Morning Frost - Alps

Zermatt, Valais, Switzerland

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

Get notified
Free alerts · takes 30 seconds
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
Time Window 88% failing
Wind Speed 54% failing

Currently

Real-time conditions
Soil Temperature5.3°C
Dew Point0.3°C (low dew point)
Wind Speed2.3m/s (calm conditions)
Cloud Cover12%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Zurich

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

This forecast tracks the conditions that create spectacular frost photography opportunities in the Alps. We combine temperature, dewpoint, humidity, and wind data to predict when hoar frost will transform Alpine landscapes into crystalline wonderlands.

The European Alps offer frost photography opportunities from valley floors to high peaks. Clear, calm nights following periods of humidity create heavy hoar frost deposits that coat everything in ice crystals. Alpine waterfalls freeze into spectacular ice sculptures, traditional chalets become fairy-tale scenes, and frozen mountain lakes offer mirror-like surfaces reflecting frost-covered peaks.

What makes the Alps special for frost photography:

  • Alpine village charm - Traditional chalets and churches encrusted with hoar frost crystals
  • Frozen waterfalls - Spectacular ice formations at Lauterbrunnen and other waterfall locations
  • High-altitude frost - Matterhorn and other peaks develop dramatic rime ice formations
  • Frozen lakes - Alpine lakes freeze solid, creating pristine foregrounds for mountain photography

Zermatt's traditional wooden chalets become postcard-perfect when covered in thick hoar frost, with the Matterhorn rising behind. Lauterbrunnen's famous waterfalls partially freeze, creating dramatic ice curtains and pillars. High-altitude locations develop spectacular rime ice—the fine ice feathers that coat everything on exposed peaks. Frozen mountain lakes like those in St. Moritz's Engadin Valley become skating rinks with 4,000m peaks reflected in perfectly smooth ice. The car-free villages of Wengen and Mürren offer pristine frost scenes without modern intrusions. The key is timing—our forecast identifies clear, cold nights that produce heavy frost, and predicts morning conditions for photography before sun melts the formations.

Create your own Morning Frost alerts

Get notified when these conditions match at your own locations.

Get this template

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/Zurich
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sun, May 24
06:0031%1.1m/s
07:0054%1m/s
08:0065%0.62m/s
09:0063%0.28m/s
10:0063%0.61m/s
11:0056%0.8m/s
12:0056%1.1m/s
13:0041%1.7m/s
14:0041%2m/s
15:0041%2.3m/s
16:003.3%2.2m/s
17:003.2%0.82m/s
18:003.6%0.32m/s
19:004.7%0.99m/s
20:003.8%1.6m/s
21:002.1%1.2m/s
22:002.1%1.1m/s
23:0033%1.1m/s
Mon, May 25
24:0037%1.3m/s
01:0020%1.8m/s
02:0024%2m/s
03:0039%2m/s
04:0029%2.1m/s
05:0043%1.9m/s
06:0045%1.6m/s
07:0045%1.4m/s
08:0050%0.87m/s
09:0054%0.33m/s
10:0054%0.24m/s
11:0054%0.34m/s
12:0043%0.65m/s
13:003.3%0.85m/s
14:003.3%0.93m/s
15:003.6%1.5m/s
16:004%1.7m/s
17:000%1.6m/s
18:000%1.5m/s
19:000%1.7m/s
20:000%1.7m/s
21:000%1.2m/s
22:002%0.51m/s
23:002.1%1.1m/s
Tue, May 26
24:002.1%1.2m/s
01:002.2%1.1m/s
02:0026%1.5m/s
03:0034%1.6m/s
04:0034%1.3m/s
05:0034%0.95m/s
06:0036%0.6m/s
07:0036%0.66m/s
08:0052%0.8m/s
09:0052%0.57m/s
10:0048%0.43m/s
11:0040%0.56m/s
12:003.4%0.71m/s
13:003.2%1m/s
14:003.2%1.2m/s
15:000%1.7m/s
16:000%1.5m/s
17:000%1.5m/s
18:000%2.7m/s
19:000%2.4m/s
20:000%2.2m/s
21:001.9%2.2m/s
22:001.7%2.2m/s
23:002%2.2m/s
Wed, May 27
24:002%2.3m/s
01:0031%2.3m/s
02:0035%2.4m/s
03:004.7%2.6m/s
04:004.5%2.8m/s
05:004.3%3m/s
06:000%3.4m/s
07:000%3.7m/s
08:000%4m/s
09:000%4.1m/s
10:000%4.1m/s
11:000%4.2m/s
12:000%4m/s
13:000%3.7m/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/Zurich
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Sun, May 24 Sunrise 05:48 Sunset 21:04
15:00
0.3°C 5.3°C 12°C - 12% 0.73kPa
16:00
-0.1°C 6.1°C 12°C - 46% 0.8kPa
17:00
0°C 6.8°C 12°C - 71% 0.78kPa
18:00
1°C 7.2°C 11°C - 68% 0.64kPa
19:00
2.6°C 7.3°C 9.5°C - 16% 0.45kPa
20:00
3.9°C 7.2°C 8.1°C - 55% 0.27kPa
21:00
2.3°C 6.9°C 5.1°C - 89% 0.16kPa
22:00
1.7°C 6.4°C 4.5°C - 100% 0.15kPa
23:00
1.6°C 5.9°C 4.4°C - 15% 0.15kPa
Mon, May 25 Sunrise 05:48 Sunset 21:04
24:00
1.1°C 5.7°C 3.8°C - 6% 0.14kPa
01:00
1°C 5.6°C 3.8°C - 90% 0.15kPa
02:00
1.1°C 5.2°C 4°C - 46% 0.15kPa
03:00
0.6°C 5°C 3.7°C - 19% 0.16kPa
04:00
0.2°C 4.8°C 3.5°C - 72% 0.16kPa
05:00
-0.1°C 4.8°C 3.1°C - 9% 0.16kPa
06:00
-0.2°C 4.7°C 3°C - 5% 0.16kPa
07:00
1.6°C 4.5°C 5.3°C - 5% 0.2kPa
08:00
1.8°C 4.5°C 7.6°C - 5% 0.35kPa
09:00
1.7°C 4.6°C 8.7°C - 5% 0.44kPa
10:00
1.8°C 4.7°C 9.7°C - 5% 0.5kPa
11:00
2.2°C 4.9°C 11°C - 9% 0.56kPa
12:00
2.7°C 5.6°C 12°C - 32% 0.62kPa
13:00
3.2°C 6.6°C 12°C - 87% 0.64kPa
14:00
3.5°C 7.4°C 12°C - 100% 0.61kPa
15:00
3.9°C 7.5°C 11°C - 98% 0.48kPa
16:00
3.6°C 7.7°C 11°C - 52% 0.49kPa
17:00
3.7°C 8.3°C 11°C - 91% 0.54kPa
18:00
4.4°C 8.4°C 11°C - 78% 0.45kPa
19:00
5.2°C 8.4°C 9.7°C - 92% 0.32kPa
20:00
5.8°C 8.3°C 8.8°C - 100% 0.21kPa
21:00
4.6°C 8.1°C 6.5°C - 100% 0.12kPa
22:00
3.7°C 7.6°C 5.4°C - 100% 0.1kPa
23:00
3.5°C 7.1°C 5.3°C - 100% 0.11kPa
Tue, May 26 Sunrise 05:47 Sunset 21:05
24:00
3°C 6.7°C 4.8°C - 100% 0.11kPa
01:00
2.7°C 6.2°C 4.5°C - 57% 0.1kPa
02:00
2.5°C 5.7°C 4.2°C - 25% 0.1kPa
03:00
2.4°C 5.3°C 4.1°C - 8% 0.09kPa
04:00
2°C 5°C 3.6°C - 5% 0.08kPa
05:00
1.7°C 4.9°C 3.1°C - 4% 0.08kPa
06:00
1.6°C 4.9°C 3°C - 0% 0.07kPa
07:00
3.9°C 4.7°C 5.6°C - 0% 0.1kPa
08:00
4.6°C 4.8°C 8.1°C - 1% 0.23kPa
09:00
4.6°C 4.8°C 9.3°C - 3% 0.32kPa
10:00
4.7°C 5.2°C 10°C - 10% 0.4kPa
11:00
5.3°C 6°C 11°C - 75% 0.46kPa
12:00
5.7°C 6.8°C 12°C - 83% 0.44kPa
13:00
6.2°C 7.4°C 12°C - 100% 0.42kPa
14:00
6.2°C 8°C 12°C - 100% 0.43kPa
15:00
6°C 8.3°C 11°C - 100% 0.39kPa
16:00
5.8°C 8.4°C 10°C - 100% 0.34kPa
17:00
5.8°C 8.5°C 10°C - 100% 0.32kPa
18:00
6.1°C 8.5°C 10°C - 100% 0.3kPa
19:00
6.5°C 8.5°C 9.8°C - 96% 0.24kPa
20:00
6.2°C 8.3°C 8.9°C - 100% 0.2kPa
21:00
5.2°C 7.6°C 7.4°C - 87% 0.14kPa
22:00
4.3°C 7°C 5.9°C - 73% 0.1kPa
23:00
3.3°C 6.4°C 4.4°C - 60% 0.06kPa
Wed, May 27 Sunrise 05:46 Sunset 21:06
24:00
4°C 6.2°C 5.5°C - 41% 0.09kPa
01:00
4.8°C 6°C 6.6°C - 23% 0.12kPa
02:00
5.5°C 5.8°C 7.8°C - 4% 0.15kPa
03:00
5.6°C 6.3°C 8.9°C - 5% 0.23kPa
04:00
5.6°C 6.9°C 10°C - 5% 0.32kPa
05:00
5.5°C 7.4°C 11°C - 5% 0.41kPa
06:00
5.3°C 8.2°C 12°C - 24% 0.49kPa
07:00
5.1°C 9°C 13°C - 43% 0.57kPa
08:00
4.9°C 9.8°C 13°C - 63% 0.65kPa
09:00
5.6°C 10°C 13°C - 72% 0.56kPa
10:00
6.3°C 11°C 12°C - 81% 0.46kPa
11:00
6.9°C 11°C 12°C - 90% 0.37kPa
12:00
7.1°C 11°C 11°C - 82% 0.28kPa
13:00
7.2°C 11°C 9.7°C - 75% 0.19kPa
14:00
7.2°C 11°C 8.8°C - 68% 0.11kPa
How to read: these inputs help produce the derived score; they are not requirements by themselves.

Get Notified of Opportunities

Create your own custom alerts for this location and more.

Create Free Account