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Rule Fog Hunter

Punkaharju - Fog Hunter - Southern Finland

Punkaharju, South Savo, Finland

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread1.7°C
Visibility24135 (Clear)
Relative Humidity88%
Wind Speed2.8m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki
fog weather icon
Next opportunity
Dense Fog
Punkaharju
Today · 22:00–01:00 · 3h window
Medium confidence
64%
🌫️Fog Probability63.9-97.2%
Dewpoint Spread: 0.3°C
Visibility: 4115 (Mist/Haze)
Relative Humidity: 98%
Wind Speed: 2.9m/s (calm conditions)
fog weather icon
Dense Fog
Punkaharju
Tomorrow · 03:00–05:00
🌫️Fog Probability:77.8-100%
High
fog weather icon
Moderate Fog at Sunrise
Punkaharju
Tomorrow · 05:00–07:00
🌫️Fog Probability:63.9-66.7%
Low
fog weather icon
Moderate Fog
Punkaharju
Wed, Mar 18 · 02:00–05:00
🌫️Fog Probability:63.9-66.7%
Low
fog weather icon
Moderate Fog
Punkaharju
Sun, Mar 22 · 22:00–01:00
🌫️Fog Probability:72.2-80.6%
Medium

What this forecast looks for

Plain-language explanation from the rule

Southern Finland's lake district and boreal forests create ideal conditions for fog photography. The region's 188,000 lakes, countless bogs, and mixed forests generate reliable morning mist from late summer through autumn.

What makes Southern Finland special for fog photography:

  • Lake fog - Large lakes like Vesijärvi and Saimaa produce dramatic ground fog at dawn
  • Bog mist - Torronsuo and other wetlands create ethereal low-lying fog over boardwalks
  • Forest atmosphere - Nuuksio and Repovesi offer misty woodland scenes with cliff viewpoints
  • Accessibility - Most locations within 2 hours of Helsinki

Peak fog season runs from August through October, with the strongest conditions occurring on calm, clear nights when temperatures drop near the dewpoint. Arrive before sunrise for the most dramatic mist.

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72-hour requirements breakdown

What passed or failed, hour by hour
10matching hours in the next 95 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Helsinki
Fog Probability
≥ 60.0%
Sun, Mar 15
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Mon, Mar 16
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:0064%
23:0083%
Tue, Mar 17
24:0097%
01:0060%
02:0060%
03:00100%
04:0078%
05:0067%
06:0064%
07:0060%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:0060%
Wed, Mar 18
24:0060%
01:0060%
02:0067%
03:0067%
04:0064%
05:0060%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Thu, Mar 19
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Fog 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
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Visibility
m
Wind Gusts
m/s
Wind Speed
m/s
Mon, Mar 16 Sunrise 06:17 Sunset 18:06
10:00
0.5°C 0.01mm 88% 0cm 2.2°C 0mm 0.08kPa 24135m 5.2m/s 2.8m/s
11:00
-0.2°C 0mm 82% 0cm 2.6°C 0.06mm 0.13kPa 24135m 4.7m/s 3m/s
12:00
-0.4°C 0mm 79% 0cm 2.8°C 0.06mm 0.16kPa 24135m 4.3m/s 2.7m/s
13:00
-0.5°C 0mm 77% 0cm 3.2°C 0.06mm 0.18kPa 24135m 3.7m/s 2.6m/s
14:00
-0.3°C 0mm 75% 0cm 3.7°C 0.06mm 0.2kPa 24135m 3.5m/s 2.4m/s
15:00
-0.1°C 0mm 75% 0cm 3.9°C 0mm 0.2kPa 24134m 3.9m/s 2.7m/s
16:00
0.1°C 0mm 79% 0cm 3.4°C 0mm 0.17kPa 24135m 4.3m/s 3m/s
17:00
-0.1°C 0mm 77% 0cm 3.6°C 0mm 0.18kPa 24134m 4.6m/s 3.3m/s
18:00
-0.2°C 0.01mm 78% 0cm 3.3°C 0mm 0.17kPa 24134m 4.3m/s 3.4m/s
19:00 ☾
-0.2°C 0.01mm 78% 0cm 3.1°C 0mm 0.16kPa 24134m 4.8m/s 3.5m/s
20:00 ☾
0.1°C 0.01mm 82% 0cm 2.8°C 0.06mm 0.13kPa 24134m 5.1m/s 3.3m/s
21:00 ☾
0.5°C 0.01mm 91% 0cm 1.9°C 0mm 0.07kPa 24134m 5.3m/s 3m/s
22:00 ☾
0.9°C 0.04mm 96% 0cm 1.5°C 0.06mm 0.03kPa 18039m 5.3m/s 2.8m/s
23:00 ☾
1°C 0.1mm 97% 0.1cm 1.4°C 0.13mm 0.02kPa 8154m 5.4m/s 2.8m/s
Tue, Mar 17 Sunrise 06:17 Sunset 18:06
24:00 ☾
1.1°C 0.05mm 98% 0cm 1.4°C 0.19mm 0.01kPa 4115m 5.9m/s 2.9m/s
01:00 ☾
1.2°C 0.31mm 98% 0cm 1.4°C 0.44mm 0.01kPa 159m 6.1m/s 3m/s
02:00 ☾
1.2°C 0.16mm 98% 0cm 1.4°C 0.69mm 0.01kPa 179m 6.1m/s 3m/s
03:00 ☾
1.3°C 0.01mm 98% 0cm 1.5°C 0.06mm 0.01kPa 360m 7m/s 3.3m/s
04:00 ☾
1.4°C 0mm 98% 0cm 1.6°C 0.06mm 0.01kPa 11341m 6.6m/s 3.1m/s
05:00 ☾
1.3°C 0mm 97% 0cm 1.7°C 0.06mm 0.02kPa 24135m 6.5m/s 3m/s
06:00 ☾
0.9°C 0mm 96% 0cm 1.6°C 0.06mm 0.03kPa 24135m 7.5m/s 3.5m/s
07:00
0.1°C 0mm 94% 0cm 0.87°C 0.06mm 0.04kPa 24134m 7.2m/s 3.5m/s
08:00
-0.2°C 0mm 90% 0cm 1.3°C 0.06mm 0.07kPa 24135m 7.9m/s 3.5m/s
09:00
0.2°C 0mm 85% 0cm 2.5°C 0mm 0.11kPa 24135m 8.1m/s 3.6m/s
10:00
0.3°C 0mm 80% 0cm 3.4°C 0mm 0.15kPa 24135m 7.4m/s 3.7m/s
11:00
0.3°C 0mm 77% 0cm 4.1°C 0mm 0.19kPa 24134m 7.5m/s 3.9m/s
12:00
0.5°C 0mm 74% 0cm 4.8°C 0mm 0.23kPa 24134m 7.4m/s 4m/s
13:00
0.6°C 0mm 72% 0cm 5.2°C 0mm 0.25kPa 24134m 7.5m/s 4.2m/s
14:00
0.8°C 0mm 72% 0cm 5.4°C 0mm 0.25kPa 24134m 7.7m/s 4.2m/s
15:00
1.2°C 0mm 74% 0cm 5.5°C 0mm 0.23kPa 24135m 8m/s 4m/s
16:00
1.1°C 0mm 76% 0cm 4.9°C 0mm 0.21kPa 24134m 8.1m/s 3.8m/s
17:00
0.8°C 0mm 80% 0cm 4.1°C 0mm 0.17kPa 24134m 7.8m/s 3.7m/s
18:00
0.3°C 0mm 84% 0cm 2.7°C 0mm 0.12kPa 24135m 6.8m/s 3.4m/s
19:00 ☾
0.3°C 0mm 87% 0cm 2.3°C 0mm 0.1kPa 24135m 7.9m/s 3.7m/s
20:00 ☾
0.1°C 0mm 89% 0cm 1.7°C 0mm 0.08kPa 24135m 8.2m/s 3.5m/s
21:00 ☾
0.1°C 0mm 91% 0cm 1.5°C 0mm 0.06kPa 24135m 7.8m/s 3.5m/s
22:00 ☾
0°C 0mm 93% 0cm 1°C 0mm 0.05kPa 24134m 7m/s 3.4m/s
23:00 ☾
0.6°C 0.01mm 93% 0cm 1.6°C 0mm 0.05kPa 24134m 7.4m/s 3.4m/s
Wed, Mar 18 Sunrise 06:14 Sunset 18:08
24:00 ☾
0.7°C 0mm 93% 0cm 1.7°C 0mm 0.05kPa 24135m 7.5m/s 3.6m/s
01:00 ☾
0.7°C 0mm 94% 0cm 1.5°C 0mm 0.04kPa 24135m 6.8m/s 3.2m/s
02:00 ☾
-0.5°C 0mm 97% 0cm -0.09°C 0mm 0.02kPa 24135m 4.8m/s 2.8m/s
03:00 ☾
-0.8°C 0mm 97% 0cm -0.43°C 0mm 0.02kPa 24135m 5m/s 2.7m/s
04:00 ☾
-1.3°C 0mm 96% 0cm -0.72°C 0mm 0.03kPa 24135m 5m/s 2.6m/s
05:00 ☾
-1.4°C 0mm 94% 0cm -0.49°C 0mm 0.04kPa 24135m 5.8m/s 2.9m/s
06:00 ☾
-1.7°C 0mm 93% 0cm -0.7°C 0mm 0.04kPa 24134m 6.5m/s 3.1m/s
07:00
-1.6°C 0mm 92% 0cm -0.5°C 0mm 0.05kPa 24134m 7.4m/s 3.3m/s
08:00
-1°C 0mm 90% 0cm 0.44°C 0mm 0.06kPa 24134m 8.3m/s 3.5m/s
09:00
-0.1°C 0mm 87% 0cm 1.8°C 0mm 0.09kPa 24134m 8.8m/s 3.8m/s
10:00
0.3°C 0mm 84% 0cm 2.8°C 0mm 0.12kPa 24134m 9.4m/s 4.2m/s
11:00
0.5°C 0mm 81% 0cm 3.5°C 0mm 0.15kPa 24135m 10m/s 4.6m/s
12:00
0.9°C 0mm 80% 0cm 4.1°C 0mm 0.17kPa 24134m 11m/s 4.8m/s
13:00
1.2°C 0mm 80% 0cm 4.5°C 0mm 0.17kPa 24135m 11m/s 5.2m/s
14:00
1°C 0mm 79% 0cm 4.2°C 0mm 0.17kPa 24135m 11m/s 5.3m/s
15:00
0.6°C 0mm 81% 0cm 3.6°C 0mm 0.15kPa 24135m 11m/s 5.3m/s
16:00
0.3°C 0mm 83% 0cm 2.9°C 0mm 0.13kPa 24135m 11m/s 5.3m/s
17:00
0°C 0mm 85% 0cm 2.3°C 0mm 0.11kPa 24135m 11m/s 5.3m/s
18:00
0.1°C 0.01mm 86% 0cm 2.2°C 0.02mm 0.1kPa 24135m 11m/s 5.1m/s
19:00 ☾
0.2°C 0.02mm 87% 0cm 2.2°C 0.04mm 0.09kPa 24135m 11m/s 4.9m/s
20:00 ☾
0.3°C 0.03mm 88% 0cm 2.1°C 0.06mm 0.09kPa 24135m 10m/s 4.7m/s
21:00 ☾
0.4°C 0.04mm 89% 0cm 2°C 0.06mm 0.08kPa 24135m 10m/s 4.8m/s
22:00 ☾
0.5°C 0.04mm 90% 0cm 2°C 0.06mm 0.07kPa 24135m 10m/s 4.8m/s
23:00 ☾
0.6°C 0.05mm 91% 0cm 1.9°C 0.06mm 0.06kPa 24135m 10m/s 4.8m/s
Thu, Mar 19 Sunrise 06:11 Sunset 18:11
24:00 ☾
0.7°C 0.04mm 91% 0cm 2°C 0.1mm 0.06kPa 24135m 10m/s 4.8m/s
01:00 ☾
0.8°C 0.03mm 92% 0cm 2°C 0.15mm 0.06kPa 24135m 10m/s 4.9m/s
02:00 ☾
0.9°C 0.02mm 92% 0cm 2.1°C 0.19mm 0.06kPa 24135m 10m/s 4.9m/s
03:00 ☾
1.1°C 0.01mm 91% 0cm 2.4°C 0.13mm 0.06kPa 24135m 9.8m/s 4.8m/s
04:00 ☾
1.3°C 0.007mm 90% 0cm 2.7°C 0.06mm 0.07kPa 24135m 9.2m/s 4.7m/s
05:00 ☾
1.4°C 0mm 89% 0cm 3°C 0mm 0.08kPa 24135m 8.7m/s 4.5m/s
06:00 ☾
1.6°C 0mm 88% 0cm 3.4°C 0mm 0.09kPa 24135m 8.8m/s 4.5m/s
07:00
1.8°C 0mm 87% 0cm 3.7°C 0mm 0.1kPa 24135m 8.9m/s 4.5m/s
08:00
1.9°C 0mm 86% 0cm 4°C 0mm 0.11kPa 24135m 8.9m/s 4.5m/s
09:00
1.9°C 0mm 86% 0cm 4.1°C 0mm 0.12kPa 24135m 9.1m/s 4.5m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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