Skip to content
PhotoWeather
Get started
More Morning Frost in Southern Finland
Create your own alerts
Rule Morning Frost

Aulanko - Morning Frost - Southern Finland

Hämeenlinna, Kanta-Häme, Finland

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 79% failing

Currently

Real-time conditions
Frost Probability
0%
Soil Temperature12.8°C
Dew Point5.9°C (moderate dew point)
Wind Speed1.3m/s (calm conditions)
Cloud Cover16%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki

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 Southern Finland's dramatic frost photography opportunities. From November through March, the region's lakes, forests, and wetlands transform under hoar frost and ice formations, with temperatures regularly dropping to -15°C or colder.

What makes Southern Finland special for frost photography:

  • Lake ice formations - Vesijärvi and Saimaa develop intricate ice patterns and frozen shoreline details
  • Torronsuo's frozen bog - The region's largest raised bog becomes an otherworldly landscape of frosted sphagnum and ice-covered pools
  • Nuuksio forest frost - Hoar frost on birch trees and frozen forest streams create intimate woodland scenes
  • Accessible winter locations - All major frost photography sites within 2 hours of Helsinki

Peak frost conditions occur during stable high-pressure systems when clear nights drop temperatures well below freezing while daytime sun creates backlit opportunities. Nuuksio's mixed forests develop heavy hoar frost on birch branches, transforming familiar trails into sparkling winter scenes. Torronsuo National Park's boardwalks traverse frosted bog landscapes where every sedge and shrub carries ice crystals. The region's thousands of lakes create endless shoreline compositions—ice formations along reed beds, frozen spray patterns, and geometric crack patterns in smooth ice. The forecast identifies calm, clear nights with appropriate temperature drops, then tracks morning visibility to ensure you can photograph the frost before midday 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 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Helsinki
Time Window
Sunrise -45m to +90m
Frost Probability
≥ 60.0%
Wind Speed
≤ 1.5m/s
Sun, Jun 7
05:00✓0%3.5m/s
06:00✕0%3.6m/s
07:00✕0%3.5m/s
08:00✕0%4m/s
09:00✕0%4.1m/s
10:00✕0%4.4m/s
11:00✕0%4.5m/s
12:00✕0%4.7m/s
13:00✕0%4.8m/s
14:00✕0%5.1m/s
15:00✕0%5.6m/s
16:00✕0%5m/s
17:00✕0%4.6m/s
18:00✕0%4.3m/s
19:00✕0%4m/s
20:00✕0%3.6m/s
21:00✕0%2.7m/s
22:00✕0%2.2m/s
23:00✕0%2.2m/s
Mon, Jun 8
24:00✕0%2.1m/s
01:00✕0%1.8m/s
02:00✕0%1.6m/s
03:00✓0%1.3m/s
04:00✓0%1.3m/s
05:00✓0%1.3m/s
06:00✕0%1.1m/s
07:00✕0%1.1m/s
08:00✕0%1.2m/s
09:00✕0%1.2m/s
10:00✕0%1.2m/s
11:00✕0%1.1m/s
12:00✕0%1.1m/s
13:00✕0%0.52m/s
14:00✕0%0.71m/s
15:00✕0%0.88m/s
16:00✕0%1.1m/s
17:00✕0%1.6m/s
18:00✕0%1.7m/s
19:00✕0%1.6m/s
20:00✕0%1.8m/s
21:00✕0%1.7m/s
22:00✕0%1.6m/s
23:00✕0%1.5m/s
Tue, Jun 9
24:00✕0%1.5m/s
01:00✕0%1.7m/s
02:00✕0%1.5m/s
03:00✓0%1.5m/s
04:00✓0%1.9m/s
05:00✓0%1.7m/s
06:00✕0%1.9m/s
07:00✕0%2.1m/s
08:00✕0%2m/s
09:00✕0%1.8m/s
10:00✕0%2.3m/s
11:00✕0%2.9m/s
12:00✕0%3.6m/s
13:00✕0%4.5m/s
14:00✕0%4.1m/s
15:00✕0%4.5m/s
16:00✕0%6.1m/s
17:00✕0%5.4m/s
18:00✕0%4.8m/s
19:00✕0%4.7m/s
20:00✕0%3.3m/s
21:00✕0%2.9m/s
22:00✕0%2.2m/s
23:00✕0%1.7m/s
Wed, Jun 10
24:00✕0%1.4m/s
01:00✕0%1.9m/s
02:00✕0%1.9m/s
03:00✓0%2.6m/s
04:00✓0%3.3m/s
05:00✓0%3.1m/s
06:00✕0%2.8m/s
07:00✕0%3.4m/s
08:00✕0%2.4m/s
09:00✕0%3.8m/s
10:00✕0%4.4m/s
11:00✕0%4.9m/s
12:00✕0%5.3m/s
13:00✕0%5.4m/s
14:00✕0%5.6m/s
15:00✕0%5.6m/s
16:00✕0%4.5m/s
17:00✕0%3.5m/s
18:00✕0%2.4m/s
19:00✕0%2.3m/s
20:00✕0%2.2m/s
21:00✕0%2.1m/s
22:00✕0%2.1m/s
23:00✕0%2m/s
Thu, Jun 11
24:00✕0%1.9m/s
01:00✕0%1.9m/s
02:00✕0%1.9m/s
03:00✓0%1.9m/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/Helsinki
Dew Point
°C
Surface Temperature
°C
Temperature
°C
Time Window
Total Cloud Coverage
%
Vapor Pressure Deficit
kPa
Mon, Jun 8 Sunrise 03:52 Sunset 22:51
05:00
5.9°C 13°C 9.2°C - 16% 0.24kPa
06:00
6.4°C 13°C 11°C - 95% 0.37kPa
07:00
6.4°C 13°C 13°C - 71% 0.56kPa
08:00
6.5°C 13°C 16°C - 100% 0.82kPa
09:00
6.7°C 13°C 17°C - 62% 1kPa
10:00
6.9°C 13°C 20°C - 100% 1.3kPa
11:00
7.1°C 14°C 21°C - 100% 1.4kPa
12:00
7.5°C 14°C 22°C - 44% 1.6kPa
13:00
7.9°C 15°C 24°C - 66% 1.9kPa
14:00
7.9°C 15°C 24°C - 67% 2kPa
15:00
7.9°C 16°C 25°C - 100% 2kPa
16:00
7.6°C 16°C 24°C - 100% 1.9kPa
17:00
8.8°C 16°C 22°C - 100% 1.6kPa
18:00
10°C 16°C 21°C - 100% 1.2kPa
19:00
11°C 16°C 20°C - 100% 1.1kPa
20:00
11°C 16°C 19°C - 100% 0.87kPa
21:00
11°C 16°C 18°C - 100% 0.71kPa
22:00
10°C 16°C 17°C - 100% 0.63kPa
23:00 ☾
9.8°C 16°C 16°C - 100% 0.59kPa
Tue, Jun 9 Sunrise 03:52 Sunset 22:51
24:00 ☾
9.2°C 16°C 15°C - 100% 0.52kPa
01:00 ☾
8.9°C 16°C 15°C - 97% 0.6kPa
02:00 ☾
8.7°C 16°C 15°C - 100% 0.59kPa
03:00 ☾
8.9°C 16°C 14°C - 100% 0.5kPa
04:00
9.2°C 15°C 14°C - 100% 0.46kPa
05:00
9.7°C 15°C 14°C - 100% 0.43kPa
06:00
9.8°C 15°C 15°C - 100% 0.45kPa
07:00
10°C 15°C 16°C - 100% 0.52kPa
08:00
10°C 15°C 16°C - 100% 0.54kPa
09:00
10°C 15°C 16°C - 100% 0.55kPa
10:00
10°C 15°C 16°C - 100% 0.62kPa
11:00
9.7°C 15°C 17°C - 100% 0.73kPa
12:00
9.4°C 15°C 19°C - 43% 0.99kPa
13:00
8.9°C 15°C 22°C - 99% 1.5kPa
14:00
8.8°C 15°C 21°C - 33% 1.4kPa
15:00
9.5°C 16°C 23°C - 82% 1.6kPa
16:00
12°C 16°C 19°C - 16% 0.8kPa
17:00
11°C 16°C 19°C - 35% 0.83kPa
18:00
9.8°C 16°C 18°C - 56% 0.84kPa
19:00
10°C 16°C 16°C - 97% 0.63kPa
20:00
11°C 16°C 15°C - 100% 0.37kPa
21:00
11°C 16°C 13°C - 100% 0.25kPa
22:00
11°C 15°C 13°C - 100% 0.18kPa
23:00 ☾
11°C 15°C 12°C - 100% 0.13kPa
Wed, Jun 10 Sunrise 03:51 Sunset 22:52
24:00 ☾
11°C 15°C 12°C - 100% 0.11kPa
01:00 ☾
11°C 15°C 12°C - 100% 0.09kPa
02:00 ☾
11°C 15°C 12°C - 98% 0.09kPa
03:00 ☾
11°C 14°C 12°C - 100% 0.08kPa
04:00
11°C 14°C 12°C - 100% 0.1kPa
05:00
10°C 14°C 12°C - 96% 0.13kPa
06:00
11°C 14°C 11°C - 100% 0.08kPa
07:00
11°C 14°C 12°C - 100% 0.1kPa
08:00
11°C 14°C 12°C - 61% 0.06kPa
09:00
12°C 14°C 14°C - 96% 0.18kPa
10:00
12°C 13°C 14°C - 86% 0.19kPa
11:00
10°C 14°C 15°C - 12% 0.52kPa
12:00
5.6°C 14°C 18°C - 0% 1.1kPa
13:00
1.8°C 14°C 19°C - 0% 1.5kPa
14:00
0.3°C 14°C 19°C - 0% 1.6kPa
15:00
1°C 14°C 19°C - 3% 1.6kPa
16:00
5.1°C 14°C 16°C - 35% 0.92kPa
17:00
6.7°C 14°C 12°C - 68% 0.44kPa
18:00
6.9°C 14°C 8.6°C - 100% 0.13kPa
19:00
6.8°C 14°C 8.3°C - 92% 0.11kPa
20:00
6.6°C 13°C 7.9°C - 84% 0.09kPa
21:00
6.5°C 13°C 7.6°C - 77% 0.07kPa
22:00
6.7°C 13°C 8.3°C - 84% 0.11kPa
23:00 ☾
6.9°C 12°C 9°C - 92% 0.15kPa
Thu, Jun 11 Sunrise 03:50 Sunset 22:53
24:00 ☾
7°C 12°C 9.6°C - 100% 0.2kPa
01:00 ☾
7.2°C 12°C 12°C - 100% 0.35kPa
02:00 ☾
7.1°C 12°C 14°C - 100% 0.54kPa
03:00 ☾
6.7°C 12°C 15°C - 100% 0.77kPa
04:00
6.4°C 12°C 16°C - 100% 0.88kPa
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