Skip to content
✨ New: PhotoWeather is now available on iOS and Android
Rule Morning Frost

Isle of Skye - Morning Frost - Scotland

Portree, Scotland, United Kingdom

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
Wind Speed 100% failing
Time Window 85% failing

Currently

Real-time conditions
Soil Temperature5.3°C
Dew Point3.0°C (low dew point)
Wind Speed6.3m/s (moderate winds)
Cloud Cover100%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

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 Scotland's dramatic frost photography opportunities. We combine temperature, dewpoint, wind, and humidity data to predict when hoar frost will form across Highland landscapes.

The Scottish Highlands offer exceptional frost photography from November through March. Cold clear nights combined with Scotland's naturally high humidity create heavy hoar frost formations that transform heather moorlands, frozen lochs, and mountain valleys into winter wonderlands. The dramatic Highland topography means frost conditions vary by elevation and exposure, creating diverse opportunities.

What makes Scotland special for frost photography:

  • Highland hoar frost - Heavy frost deposits on heather create sparkling purple-white moorlands
  • Frozen lochs - Ice formations along loch shores, particularly in the Cairngorms
  • Mountain ice crystals - High Cairngorms peaks develop spectacular rime ice formations
  • Glen Coe frost - The famous valley transformed by frost on grass and bracken

Rannoch Moor becomes otherworldly under heavy frost—the vast peatland plateau covered in sparkling crystals with distant peaks beyond. The Cairngorms' high elevation means consistent frost formation, with frozen pools and ice-covered grasses creating miniature landscapes. Glen Coe's dramatic valley takes on ethereal beauty when frost transforms the bracken-covered slopes. Frozen lochs like Loch an Eilein develop fascinating ice patterns along their shores. The key is clear, calm nights following cold days—our forecast identifies these conditions and tracks morning visibility to ensure you can capture the frost before it melts.

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 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sat, Feb 21
19:007%6.3m/s
20:000.6%7m/s
21:002.1%6.7m/s
22:001.3%5.9m/s
23:000.8%4.7m/s
Sun, Feb 22
24:009%4.9m/s
01:0011%5.6m/s
02:0011%6.1m/s
03:0014%7.2m/s
04:0014%7.2m/s
05:0014%6.7m/s
06:0014%7.2m/s
07:0025%6.8m/s
08:0025%6.6m/s
09:0021%6.6m/s
10:0021%6.9m/s
11:0014%7.2m/s
12:0014%7.9m/s
13:0014%7.7m/s
14:0014%7.8m/s
15:0014%8.1m/s
16:0014%7.9m/s
17:0014%7.5m/s
18:0014%6.5m/s
19:0014%6.3m/s
20:0014%5.8m/s
21:0014%6.1m/s
22:0014%6.6m/s
23:009%5.2m/s
Mon, Feb 23
24:007%5.9m/s
01:0011%8.1m/s
02:0011%8m/s
03:0014%7.5m/s
04:0011%7.1m/s
05:0011%6.9m/s
06:0011%6.9m/s
07:0011%6.7m/s
08:0011%7.1m/s
09:0011%7.5m/s
10:0018%7.3m/s
11:0014%6.7m/s
12:0014%6.6m/s
13:0018%6.8m/s
14:0014%5.7m/s
15:0016%4.6m/s
16:001.4%3.8m/s
17:001%3m/s
18:0013%2.8m/s
19:0011%3m/s
20:0011%3.3m/s
21:0015%3.6m/s
22:0011%4m/s
23:0013%2.8m/s
Tue, Feb 24
24:0013%2.6m/s
01:0011%4.1m/s
02:009%5.2m/s
03:009%5.6m/s
04:007%6m/s
05:007%6m/s
06:0011%6.1m/s
07:001.3%6.5m/s
08:001.3%7.2m/s
09:001.3%6.8m/s
10:001.3%6.6m/s
11:001.3%6.8m/s
12:001%6.9m/s
13:001%6.7m/s
14:001%6.4m/s
15:001%6.7m/s
16:001%7.1m/s
17:001%7.2m/s
18:001%7.1m/s
19:000.6%6.8m/s
20:000.6%7.9m/s
21:000.6%7.6m/s
22:000.6%7.4m/s
23:000.6%7m/s
Wed, Feb 25
24:000.6%6.1m/s
01:000%4.6m/s
02:000%3.1m/s
03:000%1.7m/s
04:000%1.6m/s
05:000%1.6m/s
06:000%1.5m/s
07:000%1.7m/s
08:000%1.8m/s
09:000%2m/s
10:000%3.6m/s
11:000%5.3m/s
12:000%6.9m/s
13:000%8.2m/s
14:000%9.4m/s
15:000%11m/s
16:000%9.7m/s
17:000%8.7m/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/London
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Sun, Feb 22 Sunrise 07:37 Sunset 17:40
19:00
3°C 5.3°C 4.9°C - 100% 0.11kPa
20:00
3°C 5.2°C 5°C - 100% 0.12kPa
21:00
3.1°C 5°C 5.2°C - 100% 0.12kPa
22:00
3.1°C 4.9°C 5°C - 100% 0.11kPa
23:00
4°C 4.9°C 5°C - 100% 0.05kPa
Mon, Feb 23 Sunrise 07:34 Sunset 17:42
24:00
4.5°C 4.9°C 5.5°C - 100% 0.06kPa
01:00
4.6°C 4.9°C 5.9°C - 100% 0.08kPa
02:00
4.4°C 4.9°C 5.9°C - 100% 0.09kPa
03:00
4.1°C 4.9°C 5.9°C - 96% 0.11kPa
04:00
4.2°C 4.9°C 5.7°C - 100% 0.09kPa
05:00
4.1°C 4.9°C 5.6°C - 100% 0.09kPa
06:00
4.1°C 4.8°C 5.8°C - 100% 0.1kPa
07:00
4.1°C 4.8°C 5.6°C - 100% 0.09kPa
08:00
4.4°C 4.8°C 6°C - 100% 0.1kPa
09:00
4.7°C 4.9°C 6.3°C - 85% 0.1kPa
10:00
5°C 5°C 6.7°C - 59% 0.11kPa
11:00
5.4°C 5.2°C 7.3°C - 100% 0.12kPa
12:00
5.7°C 5.4°C 7.6°C - 100% 0.13kPa
13:00
5.9°C 5.6°C 7.7°C - 49% 0.12kPa
14:00
6.2°C 5.8°C 8°C - 100% 0.13kPa
15:00
6°C 6°C 7.6°C - 100% 0.11kPa
16:00
5.8°C 6.1°C 7.2°C - 100% 0.09kPa
17:00
5.7°C 6.1°C 6.7°C - 100% 0.06kPa
18:00
5.6°C 6°C 6.1°C - 100% 0.03kPa
19:00
5.7°C 5.9°C 6.1°C - 100% 0.02kPa
20:00
5.7°C 5.9°C 6.2°C - 100% 0.03kPa
21:00
5.2°C 5.8°C 6.3°C - 100% 0.07kPa
22:00
5.3°C 5.8°C 6°C - 100% 0.04kPa
23:00
5°C 5.7°C 5.7°C - 100% 0.04kPa
Tue, Feb 24 Sunrise 07:32 Sunset 17:44
24:00
5.2°C 5.6°C 5.6°C - 100% 0.03kPa
01:00
5.3°C 5.6°C 5.9°C - 100% 0.04kPa
02:00
6°C 5.6°C 6.5°C - 100% 0.03kPa
03:00
6.9°C 5.6°C 7.6°C - 100% 0.05kPa
04:00
6.8°C 5.8°C 7.7°C - 100% 0.06kPa
05:00
7°C 5.9°C 7.8°C - 100% 0.06kPa
06:00
6.7°C 6°C 7.7°C - 100% 0.07kPa
07:00
6.5°C 6.1°C 8.1°C - 100% 0.11kPa
08:00
6.5°C 6.2°C 8.6°C - 100% 0.15kPa
09:00
6.5°C 6.3°C 8.2°C - 100% 0.11kPa
10:00
6.3°C 6.3°C 8.1°C - 100% 0.13kPa
11:00
6.3°C 6.4°C 7.9°C - 100% 0.11kPa
12:00
6.6°C 6.4°C 7.9°C - 100% 0.09kPa
13:00
6.7°C 6.5°C 7.9°C - 100% 0.08kPa
14:00
7°C 6.6°C 8.1°C - 100% 0.08kPa
15:00
7°C 6.6°C 8.2°C - 100% 0.09kPa
16:00
7.2°C 6.7°C 8.4°C - 100% 0.09kPa
17:00
7.3°C 6.8°C 8.5°C - 100% 0.09kPa
18:00
7.4°C 6.9°C 8.5°C - 100% 0.08kPa
19:00
7.6°C 6.9°C 8.6°C - 100% 0.07kPa
20:00
7.8°C 7°C 8.7°C - 100% 0.06kPa
21:00
7.9°C 7°C 8.5°C - 100% 0.04kPa
22:00
7.9°C 7.1°C 8.5°C - 100% 0.04kPa
23:00
7.9°C 7.2°C 8.4°C - 100% 0.04kPa
Wed, Feb 25 Sunrise 07:29 Sunset 17:47
24:00
7.8°C 7.2°C 8.3°C - 100% 0.04kPa
01:00
7.7°C 3247°C 8.2°C - 100% 0.04kPa
02:00
7.6°C 6486°C 8.1°C - 100% 0.04kPa
03:00
7.5°C 9726°C 8.1°C - 100% 0.04kPa
04:00
7.5°C 9726°C 8.1°C - 100% 0.04kPa
05:00
7.5°C 9726°C 8.1°C - 100% 0.04kPa
06:00
7.5°C 9726°C 8.1°C - 100% 0.04kPa
07:00
7.5°C 9726°C 8°C - 100% 0.04kPa
08:00
7.5°C 9726°C 8°C - 100% 0.03kPa
09:00
7.6°C 9726°C 8°C - 100% 0.03kPa
10:00
7.5°C 9726°C 8.2°C - 100% 0.05kPa
11:00
7.5°C 9726°C 8.4°C - 100% 0.06kPa
12:00
7.5°C 9726°C 8.6°C - 100% 0.08kPa
13:00
7.5°C 9726°C 9°C - 100% 0.11kPa
14:00
7.5°C 9726°C 9.3°C - 100% 0.14kPa
15:00
7.5°C 9726°C 9.7°C - 100% 0.17kPa
16:00
7°C 9726°C 9°C - 100% 0.15kPa
17:00
6.5°C 9726°C 8.3°C - 100% 0.13kPa
18:00
5.9°C 9726°C 7.6°C - 100% 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