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

Orkney Islands - Morning Frost - Scotland

Kirkwall, 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 88% failing

Currently

Real-time conditions
Soil Temperature9725.9°C
Dew Point1.3°C (low dew point)
Wind Speed13.5m/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 80 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
Sun, Mar 15
04:000%11m/s
05:000%13m/s
06:000%15m/s
07:000%14m/s
08:000%14m/s
09:000%14m/s
10:000%12m/s
11:000%13m/s
12:000%12m/s
13:000%14m/s
14:000%14m/s
15:000%15m/s
16:000%15m/s
17:000%15m/s
18:000%15m/s
19:000%15m/s
20:000%15m/s
21:000%15m/s
22:000%15m/s
23:000%15m/s
Mon, Mar 16
24:000%15m/s
01:000%14m/s
02:000%15m/s
03:000%15m/s
04:000%14m/s
05:000%17m/s
06:000%17m/s
07:000%18m/s
08:000%17m/s
09:000%18m/s
10:000%18m/s
11:000%17m/s
12:000%16m/s
13:000%15m/s
14:000%13m/s
15:000%11m/s
16:000%9.9m/s
17:000%7.8m/s
18:000%10m/s
19:000%12m/s
20:000%14m/s
21:000%12m/s
22:000%10m/s
23:000%9.6m/s
Tue, Mar 17
24:000%9m/s
01:000%9.1m/s
02:000%8.7m/s
03:000%10m/s
04:000%9.5m/s
05:000%11m/s
06:000%12m/s
07:000%12m/s
08:000%11m/s
09:000%12m/s
10:000%13m/s
11:000%14m/s
12:000%14m/s
13:000%14m/s
14:000%12m/s
15:000%9.1m/s
16:000%14m/s
17:000%12m/s
18:000%11m/s
19:000%11m/s
20:000%10m/s
21:000%9.9m/s
22:000%10m/s
23:000%10m/s
Wed, Mar 18
24:000%10m/s
01:000%10m/s
02:000%10m/s
03:000%9.9m/s
04:000%9.9m/s
05:000%9.9m/s
06:000%9.8m/s
07:000%9.8m/s
08:000%9.7m/s
09:000%9.6m/s
10:000%9.1m/s
11:000%8.6m/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, Mar 15 Sunrise 06:28 Sunset 18:14
13:00
1.3°C 9726°C 5.6°C - 100% 0.24kPa
14:00
0.7°C 9726°C 5.7°C - 99% 0.27kPa
15:00
0.9°C 9726°C 5.4°C - 100% 0.25kPa
16:00
0.5°C 9726°C 5.3°C - 88% 0.26kPa
17:00
0.2°C 9726°C 5.2°C - 43% 0.26kPa
18:00
-0.1°C 9726°C 5.1°C - 59% 0.27kPa
19:00
-0.5°C 9726°C 5.2°C - 84% 0.29kPa
20:00
-0.8°C 9726°C 5.1°C - 79% 0.3kPa
21:00
-1.1°C 9726°C 5.1°C - 99% 0.32kPa
22:00
-1.1°C 9726°C 5°C - 100% 0.31kPa
23:00
-1.3°C 9726°C 5.1°C - 100% 0.32kPa
Mon, Mar 16 Sunrise 06:25 Sunset 18:16
24:00
-1°C 9726°C 5°C - 100% 0.3kPa
01:00
-0.4°C 9726°C 4.9°C - 100% 0.27kPa
02:00
0.4°C 9726°C 4.9°C - 100% 0.24kPa
03:00
1.5°C 9726°C 4.9°C - 100% 0.18kPa
04:00
3.3°C 9726°C 3.9°C - 100% 0.03kPa
05:00
3.2°C 9726°C 5.2°C - 100% 0.12kPa
06:00
2.4°C 9726°C 5.8°C - 100% 0.19kPa
07:00
3°C 9726°C 5°C - 100% 0.11kPa
08:00
2.6°C 9726°C 5.7°C - 88% 0.18kPa
09:00
2.3°C 9726°C 6.1°C - 100% 0.22kPa
10:00
2.5°C 9726°C 6.2°C - 100% 0.22kPa
11:00
2.5°C 9726°C 6.7°C - 100% 0.25kPa
12:00
2.6°C 9726°C 6.9°C - 100% 0.25kPa
13:00
2.7°C 9726°C 7°C - 100% 0.26kPa
14:00
2.8°C 9726°C 7.2°C - 98% 0.27kPa
15:00
3.1°C 9726°C 7.3°C - 100% 0.26kPa
16:00
4°C 9726°C 7.2°C - 100% 0.2kPa
17:00
4.7°C 9726°C 7.2°C - 100% 0.16kPa
18:00
4.8°C 9726°C 6.3°C - 100% 0.1kPa
19:00
5.4°C 9726°C 6.4°C - 100% 0.06kPa
20:00
5.3°C 9726°C 6.5°C - 100% 0.08kPa
21:00
5.4°C 9726°C 7.2°C - 100% 0.12kPa
22:00
5.7°C 9726°C 7.6°C - 100% 0.13kPa
23:00
6.5°C 9726°C 8.7°C - 100% 0.16kPa
Tue, Mar 17 Sunrise 06:22 Sunset 18:18
24:00
7.2°C 9726°C 9.2°C - 100% 0.14kPa
01:00
7.3°C 9726°C 9.2°C - 100% 0.14kPa
02:00
7°C 9726°C 8.3°C - 100% 0.1kPa
03:00
6.7°C 9726°C 8.6°C - 100% 0.14kPa
04:00
6.5°C 9726°C 9.1°C - 100% 0.19kPa
05:00
6.3°C 9726°C 8.4°C - 100% 0.15kPa
06:00
5.9°C 9726°C 8.8°C - 100% 0.2kPa
07:00
5.7°C 9726°C 8.6°C - 100% 0.2kPa
08:00
5.8°C 9726°C 8.7°C - 100% 0.21kPa
09:00
5.8°C 9726°C 8.9°C - 100% 0.22kPa
10:00
5.7°C 9726°C 9.1°C - 99% 0.24kPa
11:00
5.8°C 9726°C 9.2°C - 100% 0.24kPa
12:00
5.9°C 9726°C 9.4°C - 99% 0.25kPa
13:00
6°C 9726°C 9.7°C - 100% 0.26kPa
14:00
6.3°C 9726°C 9.3°C - 100% 0.21kPa
15:00
7.1°C 9726°C 8.5°C - 100% 0.1kPa
16:00
6°C 9726°C 8.7°C - 100% 0.19kPa
17:00
5.4°C 9726°C 8.6°C - 100% 0.22kPa
18:00
4.8°C 9726°C 8.8°C - 100% 0.27kPa
19:00
4.5°C 9726°C 8.4°C - 88% 0.26kPa
20:00
4.1°C 9726°C 8.1°C - 75% 0.26kPa
21:00
3.7°C 9726°C 7.7°C - 63% 0.26kPa
22:00
3.7°C 9726°C 7.6°C - 44% 0.25kPa
23:00
3.8°C 9726°C 7.5°C - 24% 0.24kPa
Wed, Mar 18 Sunrise 06:19 Sunset 18:21
24:00
3.8°C 9726°C 7.4°C - 5% 0.23kPa
01:00
3.9°C 9726°C 7.4°C - 37% 0.22kPa
02:00
4°C 9726°C 7.4°C - 68% 0.22kPa
03:00
4°C 9726°C 7.4°C - 100% 0.22kPa
04:00
4.2°C 9726°C 7.7°C - 99% 0.22kPa
05:00
4.3°C 9726°C 7.9°C - 99% 0.23kPa
06:00
4.5°C 9726°C 8.1°C - 98% 0.24kPa
07:00
4.6°C 9726°C 8.1°C - 98% 0.23kPa
08:00
4.8°C 9726°C 8°C - 98% 0.22kPa
09:00
4.9°C 9726°C 8°C - 98% 0.2kPa
10:00
5.2°C 9726°C 7.9°C - 99% 0.18kPa
11:00
5.5°C 9726°C 7.9°C - 100% 0.16kPa
12:00
5.8°C 9726°C 7.8°C - 100% 0.14kPa
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