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No opportunity windows are predicted in the next 10 days. Conditions can change quickly, so check back for updates.

More Morning Frost in Alps

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Rule Morning Frost

Wengen - Morning Frost - Alps

Q: What conditions does Morning Frost look for?

Time Window: Sunrise -45m to +90m. Frost Probability: ≥ 60.0%. Wind Speed: ≤ 1.5m/s

Wengen, Bern, Switzerland

Frost crystals on calm, cold mornings near sunrise

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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)

Time Window 88% failing

Wind Speed 64% failing

Frost Probability 40% failing

Currently

Real-time conditions

Frost Probability

76%

Soil Temperature-3.3°C

Dew Point-15.1°C (low dew point)

Wind Speed1.6m/s (calm conditions)

Cloud Cover100%

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.

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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/Zurich	Time Window Sunrise -45m to +90m	Frost Probability ≥ 60.0%	Wind Speed ≤ 1.5m/s
Sat, Feb 21
20:00	✕	57%	1.8m/s
21:00	✕	68%	2.3m/s
22:00	✕	78%	2.2m/s
23:00	✕	84%	1.6m/s
Sun, Feb 22
24:00	✕	88%	1.2m/s
01:00	✕	88%	1.5m/s
02:00	✕	86%	1.7m/s
03:00	✕	78%	1.9m/s
04:00	✕	75%	2.3m/s
05:00	✕	89%	1.8m/s
06:00	✓	85%	1.7m/s
07:00	✓	91%	1.6m/s
08:00	✓	89%	1.8m/s
09:00	✕	93%	1.3m/s
10:00	✕	73%	2.1m/s
11:00	✕	67%	1.7m/s
12:00	✕	59%	1.4m/s
13:00	✕	56%	1.8m/s
14:00	✕	52%	2.3m/s
15:00	✕	56%	1.8m/s
16:00	✕	67%	2m/s
17:00	✕	67%	1.9m/s
18:00	✕	78%	1.5m/s
19:00	✕	76%	1.5m/s
20:00	✕	76%	1.6m/s
21:00	✕	76%	1.6m/s
22:00	✕	78%	1.7m/s
23:00	✕	76%	1.7m/s
Mon, Feb 23
24:00	✕	76%	1.8m/s
01:00	✕	71%	2.4m/s
02:00	✕	67%	2.4m/s
03:00	✕	62%	2.8m/s
04:00	✕	56%	1.8m/s
05:00	✕	56%	2m/s
06:00	✓	56%	2.6m/s
07:00	✓	55%	2.8m/s
08:00	✓	56%	2.8m/s
09:00	✕	50%	3.1m/s
10:00	✕	51%	2.8m/s
11:00	✕	50%	3m/s
12:00	✕	50%	3.4m/s
13:00	✕	50%	3.1m/s
14:00	✕	53%	2.7m/s
15:00	✕	50%	3.1m/s
16:00	✕	51%	2.8m/s
17:00	✕	67%	2.5m/s
18:00	✕	54%	3m/s
19:00	✕	56%	2.6m/s
20:00	✕	57%	2.6m/s
21:00	✕	56%	2.3m/s
22:00	✕	56%	2.7m/s
23:00	✕	54%	2.8m/s
Tue, Feb 24
24:00	✕	65%	2.7m/s
01:00	✕	78%	2.5m/s
02:00	✕	68%	2.6m/s
03:00	✕	63%	2.9m/s
04:00	✕	60%	2.7m/s
05:00	✕	63%	2.8m/s
06:00	✓	63%	2.4m/s
07:00	✓	63%	2.1m/s
08:00	✓	60%	2.4m/s
09:00	✕	56%	2.1m/s
10:00	✕	59%	2.1m/s
11:00	✕	59%	1.8m/s
12:00	✕	58%	1.5m/s
13:00	✕	58%	1.5m/s
14:00	✕	56%	1.7m/s
15:00	✕	56%	1.8m/s
16:00	✕	65%	1.5m/s
17:00	✕	73%	1.4m/s
18:00	✕	84%	1.4m/s
19:00	✕	88%	1.3m/s
20:00	✕	93%	1.2m/s
21:00	✕	93%	1.3m/s
22:00	✕	93%	1.5m/s
23:00	✕	93%	1.5m/s
Wed, Feb 25
24:00	✕	93%	1.5m/s
01:00	✕	93%	1.3m/s
02:00	✕	84%	1.1m/s
03:00	✕	84%	0.85m/s
04:00	✕	78%	0.61m/s
05:00	✕	67%	0.71m/s
06:00	✓	58%	0.8m/s
07:00	✓	54%	0.9m/s
08:00	✓	58%	0.89m/s
09:00	✕	61%	0.87m/s
10:00	✕	69%	0.86m/s
11:00	✕	72%	0.9m/s
12:00	✕	76%	0.95m/s
13:00	✕	82%	0.99m/s
14:00	✕	82%	1.1m/s
15:00	✕	82%	1.2m/s
16:00	✕	82%	1.2m/s
17:00	✕	82%	1.3m/s
18:00	✕	79%	1.3m/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/Zurich	Dew Point °C	Surface Temperature °C	Temperature °C	Time Window	Total Cloud Coverage %	Vapor Pressure Deficit kPa
Sun, Feb 22 Sunrise 07:20 Sunset 18:03
20:00 ☾	-15°C	-3.3°C	-4.3°C	-	100%	0.26kPa
21:00 ☾	-15°C	-3.3°C	-4.5°C	-	100%	0.24kPa
22:00 ☾	-14°C	-3.3°C	-4.8°C	-	100%	0.23kPa
23:00 ☾	-14°C	-3.3°C	-5°C	-	100%	0.22kPa
Mon, Feb 23 Sunrise 07:20 Sunset 18:03
24:00 ☾	-14°C	-3.3°C	-5.1°C	-	100%	0.21kPa
01:00 ☾	-12°C	-3.3°C	-5.2°C	-	100%	0.18kPa
02:00 ☾	-8.8°C	-3.3°C	-3.8°C	-	100%	0.15kPa
03:00 ☾	-7.4°C	-3.3°C	-4.3°C	-	100%	0.09kPa
04:00 ☾	-6.7°C	-3.3°C	-4.4°C	-	100%	0.07kPa
05:00 ☾	-6.6°C	-3.3°C	-4°C	-	100%	0.08kPa
06:00 ☾	-5.8°C	-3.3°C	-4.3°C	-	99%	0.05kPa
07:00 ☾	-5.6°C	-3.3°C	-4.6°C	-	78%	0.03kPa
08:00	-5°C	-3.3°C	-4.1°C	-	58%	0.03kPa
09:00	-3.3°C	-3.3°C	-2.6°C	-	100%	0.03kPa
10:00	-2.4°C	-3.3°C	-1.9°C	-	62%	0.02kPa
11:00	-2.1°C	-3.3°C	-1.9°C	-	81%	0.01kPa
12:00	-2.1°C	-3.3°C	-2.1°C	-	90%	0kPa
13:00	-2°C	-3.3°C	-2°C	-	100%	0kPa
14:00	-1.6°C	-3.2°C	-1.3°C	-	70%	0.01kPa
15:00	-2.2°C	-3.2°C	-2.1°C	-	82%	0kPa
16:00	-3°C	-3.2°C	-2.5°C	-	76%	0.02kPa
17:00	-4°C	-3.2°C	-2.8°C	-	15%	0.04kPa
18:00	-7.6°C	-3.2°C	-7°C	-	53%	0.02kPa
19:00 ☾	-7.9°C	-3.2°C	-7.2°C	-	57%	0.02kPa
20:00 ☾	-8.1°C	-3.2°C	-6.9°C	-	66%	0.03kPa
21:00 ☾	-8.8°C	-3.2°C	-6.7°C	-	87%	0.05kPa
22:00 ☾	-8.2°C	-3.2°C	-5.9°C	-	83%	0.07kPa
23:00 ☾	-8.1°C	-3.2°C	-6.1°C	-	87%	0.06kPa
Tue, Feb 24 Sunrise 07:19 Sunset 18:04
24:00 ☾	-8.3°C	-3.2°C	-5°C	-	70%	0.09kPa
01:00 ☾	-10°C	-3.2°C	-5.5°C	-	19%	0.12kPa
02:00 ☾	-11°C	-3.2°C	-6.1°C	-	66%	0.13kPa
03:00 ☾	-8.7°C	-3.2°C	-5.3°C	-	69%	0.09kPa
04:00 ☾	-7.8°C	-3.3°C	-5.4°C	-	44%	0.07kPa
05:00 ☾	-7.2°C	-3.3°C	-5.1°C	-	35%	0.06kPa
06:00 ☾	-6.7°C	-3.3°C	-5.1°C	-	34%	0.05kPa
07:00 ☾	-5.8°C	-3.3°C	-4.6°C	-	35%	0.04kPa
08:00	-5°C	-3.3°C	-3.9°C	-	50%	0.03kPa
09:00	-2.7°C	-3.3°C	-2°C	-	47%	0.03kPa
10:00	-1.4°C	-3.3°C	-1.2°C	-	30%	0.01kPa
11:00	-0.7°C	-3.3°C	-0.43°C	-	34%	0.01kPa
12:00	-0.1°C	-3.2°C	0.06°C	-	42%	0.01kPa
13:00	-0.1°C	-3.2°C	0.05°C	-	48%	0.01kPa
14:00	-0.1°C	-3.2°C	0.23°C	-	55%	0.01kPa
15:00	0.4°C	-3.2°C	0.6°C	-	41%	0.01kPa
16:00	-0.2°C	-3.2°C	0.59°C	-	22%	0.03kPa
17:00	-2.4°C	-3.2°C	-0.03°C	-	8%	0.1kPa
18:00	-7°C	-3.2°C	-2.3°C	-	2%	0.15kPa
19:00 ☾	-9.1°C	-3.2°C	-2.7°C	-	1%	0.2kPa
20:00 ☾	-9.9°C	-3.2°C	-2.5°C	-	0%	0.22kPa
21:00 ☾	-10°C	-3.2°C	-2.3°C	-	0%	0.24kPa
22:00 ☾	-11°C	-3.2°C	-2.2°C	-	4%	0.25kPa
23:00 ☾	-10°C	-3.2°C	-2.2°C	-	5%	0.24kPa
Wed, Feb 25 Sunrise 07:17 Sunset 18:06
24:00 ☾	-10°C	-3.2°C	-2.3°C	-	4%	0.24kPa
01:00 ☾	-10°C	-3.2°C	-2.4°C	-	4%	0.24kPa
02:00 ☾	-6.9°C	-3.2°C	-0.99°C	-	3%	0.2kPa
03:00 ☾	-3.6°C	-3.2°C	0.43°C	-	2%	0.16kPa
04:00 ☾	-0.5°C	-3.3°C	1.9°C	-	1%	0.11kPa
05:00 ☾	0.2°C	-3.3°C	1.7°C	-	28%	0.07kPa
06:00 ☾	0.9°C	-3.2°C	1.6°C	-	54%	0.04kPa
07:00 ☾	1.5°C	-3.2°C	1.5°C	-	81%	0kPa
08:00	1.2°C	-3.2°C	1.4°C	-	56%	0.01kPa
09:00	0.9°C	-3.2°C	1.4°C	-	32%	0.02kPa
10:00	0.6°C	-3.2°C	1.3°C	-	7%	0.03kPa
11:00	-2.7°C	-3.2°C	-0.07°C	-	19%	0.11kPa
12:00	-6.2°C	-3.2°C	-1.4°C	-	32%	0.17kPa
13:00	-10°C	-3.2°C	-2.8°C	-	44%	0.21kPa
14:00	-11°C	-3.2°C	-2.7°C	-	48%	0.23kPa
15:00	-11°C	-3.2°C	-2.7°C	-	51%	0.24kPa
16:00	-12°C	-3.2°C	-2.6°C	-	55%	0.25kPa
17:00	-12°C	-3.3°C	-2.9°C	-	58%	0.24kPa
18:00	-11°C	-3.3°C	-3.2°C	-	61%	0.23kPa
19:00 ☾	-11°C	-3.3°C	-3.4°C	-	63%	0.22kPa

How to read: these inputs help produce the derived score; they are not requirements by themselves.

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