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Rule Fog Hunter

Aulanko - Fog Hunter - Southern Finland

Hämeenlinna, Kanta-Häme, Finland

Thick, moody fog for atmospheric forest and landscape shots

No opportunities right now
Here’s what usually blocks matches

No Fog Hunter opportunities in the next 14 days

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Rule requirements (key thresholds)
Fog Probability · ≥ 85.0% Dewpoint Spread · ≤ 2.0°C Visibility · ≤ 3000.0m Wind Speed · ≤ 2.0m/s

Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.

Most common blockers (next 72 hours)
Fog Probability 100% failing
Visibility 100% failing
Wind Speed 63% failing

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread1.4°C
Visibility24135 (Clear)
Relative Humidity91%
Wind Speed4.1m/s (calm conditions)

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

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
0matching hours in the next 91 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Helsinki
Fog Probability
≥ 85.0%
Dewpoint Spread
≤ 2.0°C
Visibility
≤ 3000.0m
Wind Speed
≤ 2.0m/s
Wed, Mar 4
07:000%3.5°C24134m5.9m/s
08:000%3.5°C24134m5.8m/s
09:000%3.4°C24135m5.9m/s
10:000%2.4°C24135m5.9m/s
11:000%2.8°C24134m5.9m/s
12:000%3.9°C24135m6.2m/s
13:000%3.8°C24134m6.4m/s
14:000%3°C24134m6.5m/s
15:000%2.9°C24134m6.9m/s
16:000%0.8°C17659m6.7m/s
17:000%0.5°C95m6.5m/s
18:000%0.7°C725m6.2m/s
19:000%2.2°C24135m6.3m/s
20:000%1.3°C19455m6.2m/s
21:000%1.6°C24135m5.7m/s
22:000%1.8°C24134m5.6m/s
23:000%1.8°C24134m5.5m/s
Thu, Mar 5
24:000%1.5°C24135m5.2m/s
01:000%1.5°C24135m5.4m/s
02:000%1.8°C24134m5.8m/s
03:000%1.6°C24135m5m/s
04:000%1.4°C24135m4.1m/s
05:000%1°C24134m3.1m/s
06:0051%0.8°C24134m2.8m/s
07:0054%0.6°C24135m2.9m/s
08:0054%0.6°C24134m2.7m/s
09:000%1.2°C24135m2.8m/s
10:000%1.9°C24135m3m/s
11:000%2.3°C24134m2.8m/s
12:000%2.6°C24134m2.9m/s
13:000%2.8°C24134m2.4m/s
14:000%2.9°C24135m2.8m/s
15:000%2.6°C24134m2.5m/s
16:000%1.9°C24134m2.1m/s
17:0060%0.8°C24134m1.4m/s
18:0064%0.6°C24135m1.5m/s
19:0067%0.4°C24135m0.98m/s
20:0069%0.3°C24135m0.84m/s
21:0069%0.2°C24134m0.47m/s
22:0069%0.2°C24134m0.38m/s
23:0069%0.1°C24134m0.72m/s
Fri, Mar 6
24:0069%0.2°C24134m1.2m/s
01:0069%0.2°C24135m1.5m/s
02:0067%0.3°C24134m1.5m/s
03:0067%0.3°C24135m1.7m/s
04:0069%0.2°C24135m1.5m/s
05:0069%0.2°C24134m1.5m/s
06:0069%0.3°C24134m1.5m/s
07:0067%0.4°C24134m1.6m/s
08:0064%0.6°C24135m1.7m/s
09:000%2°C24134m2m/s
10:000%3.2°C24135m2.3m/s
11:000%4.1°C24134m2.7m/s
12:000%4.4°C24134m3.1m/s
13:000%4.2°C24135m3.4m/s
14:000%3.7°C24134m3.6m/s
15:000%3.2°C24134m3.6m/s
16:000%2.5°C24135m3.6m/s
17:000%1.7°C24134m3.4m/s
18:000%1.2°C24134m3.2m/s
19:000%1°C24134m2.9m/s
20:0051%0.8°C24135m2.9m/s
21:0054%0.7°C24135m2.9m/s
22:0054%0.6°C24134m3.1m/s
23:0054%0.6°C24134m3.4m/s
Sat, Mar 7
24:000%1.3°C24134m4.3m/s
01:000%1.1°C24135m3.3m/s
02:000%1°C24135m3.3m/s
03:000%1°C24135m3.5m/s
04:000%1.2°C24135m3.8m/s
05:000%1.7°C24134m3.3m/s
06:000%1.4°C24135m3.1m/s
07:000%1.2°C24134m2.8m/s
08:000%1.2°C24135m2.8m/s
09:000%1.5°C24135m2.2m/s
10:000%1.8°C24135m1.7m/s
11:000%2.1°C24135m1.1m/s
12:000%1.7°C24135m1m/s
13:000%1.3°C24135m0.91m/s
14:0053%0.9°C24135m0.81m/s
15:000%1°C24135m0.95m/s
16:000%1°C24135m1.1m/s
17:000%1°C24135m1.2m/s
18:000%1.3°C24135m1.5m/s
19:000%1.6°C24135m1.7m/s
20:000%2°C24135m1.9m/s
21:000%2.1°C24135m2.1m/s
22:000%2.1°C24135m2.3m/s
23:000%2.1°C24135m2.5m/s
Sun, Mar 8
24:000%2.6°C24135m2.6m/s
01:000%3°C24135m2.6m/s
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does 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
Wind Gusts
m/s
Thu, Mar 5 Sunrise 07:11 Sunset 17:57
04:00 ☾
-1.1°C 0mm 91% 0cm 0.27°C 0mm 0.06kPa 13m/s
05:00 ☾
-1.5°C 0mm 93% 0cm -0.48°C 0mm 0.04kPa 11m/s
06:00 ☾
-1.5°C 0mm 94% 0cm -0.72°C 0mm 0.03kPa 9.8m/s
07:00 ☾
-1.9°C 0mm 96% 0cm -1.3°C 0mm 0.02kPa 8.9m/s
08:00
-2.6°C 0mm 96% 0cm -2°C 0mm 0.02kPa 8.9m/s
09:00
-2.3°C 0mm 92% 0cm -1.1°C 0mm 0.05kPa 9m/s
10:00
-1.9°C 0mm 87% 0cm -0.03°C 0mm 0.08kPa 6.7m/s
11:00
-1.5°C 0mm 85% 0cm 0.81°C 0mm 0.1kPa 5.2m/s
12:00
-1°C 0mm 83% 0cm 1.6°C 0mm 0.12kPa 5.1m/s
13:00
-0.6°C 0mm 82% 0cm 2.2°C 0mm 0.13kPa 4.5m/s
14:00
-0.3°C 0mm 82% 0cm 2.6°C 0mm 0.14kPa 5m/s
15:00
0°C 0mm 83% 0cm 2.6°C 0mm 0.13kPa 4.9m/s
16:00
0.4°C 0mm 88% 0cm 2.3°C 0mm 0.09kPa 5.5m/s
17:00
0°C 0mm 95% 0cm 0.77°C 0mm 0.03kPa 3.3m/s
18:00 ☾
-1.3°C 0mm 96% 0cm -0.73°C 0mm 0.02kPa 4.2m/s
19:00 ☾
-1.9°C 0mm 98% 0cm -1.5°C 0mm 0.01kPa 1m/s
20:00 ☾
-2°C 0mm 98% 0cm -1.7°C 0mm 0.01kPa 0.81m/s
21:00 ☾
-2°C 0mm 98% 0cm -1.8°C 0mm 0.01kPa 0.51m/s
22:00 ☾
-2.2°C 0mm 98% 0cm -2°C 0mm 0.01kPa 0.41m/s
23:00 ☾
-2.4°C 0mm 99% 0cm -2.3°C 0mm 0.01kPa 0.7m/s
Fri, Mar 6 Sunrise 07:11 Sunset 17:57
24:00 ☾
-2.6°C 0mm 98% 0cm -2.4°C 0mm 0.01kPa 1.1m/s
01:00 ☾
-2.5°C 0mm 98% 0cm -2.3°C 0mm 0.01kPa 2.8m/s
02:00 ☾
-2.8°C 0mm 98% 0cm -2.5°C 0mm 0.01kPa 4m/s
03:00 ☾
-2.8°C 0mm 98% 0cm -2.5°C 0mm 0.01kPa 5.3m/s
04:00 ☾
-2.9°C 0mm 98% 0cm -2.7°C 0mm 0.01kPa 4.7m/s
05:00 ☾
-3°C 0mm 98% 0cm -2.8°C 0mm 0.01kPa 3.9m/s
06:00 ☾
-3.2°C 0mm 98% 0cm -2.9°C 0mm 0.01kPa 3.9m/s
07:00 ☾
-3.3°C 0mm 97% 0cm -2.9°C 0mm 0.01kPa 5.1m/s
08:00
-3°C 0mm 95% 0cm -2.4°C 0mm 0.02kPa 6.2m/s
09:00
-2.5°C 0mm 87% 0cm -0.54°C 0mm 0.08kPa 7.2m/s
10:00
-1.9°C 0mm 80% 0cm 1.3°C 0mm 0.14kPa 7.2m/s
11:00
-1.4°C 0mm 74% 0cm 2.7°C 0mm 0.19kPa 8.1m/s
12:00
-0.6°C 0mm 73% 0cm 3.8°C 0mm 0.22kPa 9.8m/s
13:00
0.2°C 0mm 74% 0cm 4.4°C 0mm 0.21kPa 9.7m/s
14:00
0.8°C 0mm 77% 0cm 4.5°C 0mm 0.2kPa 10m/s
15:00
1.2°C 0mm 80% 0cm 4.4°C 0mm 0.17kPa 10m/s
16:00
1.3°C 0mm 84% 0cm 3.8°C 0mm 0.13kPa 9.5m/s
17:00
1°C 0mm 88% 0cm 2.7°C 0mm 0.09kPa 9m/s
18:00
0.1°C 0mm 92% 0cm 1.3°C 0mm 0.06kPa 9.5m/s
19:00 ☾
-0.5°C 0mm 93% 0cm 0.52°C 0mm 0.04kPa 10m/s
20:00 ☾
-0.7°C 0mm 94% 0cm 0.1°C 0mm 0.04kPa 10m/s
21:00 ☾
-0.7°C 0mm 95% 0cm -0.03°C 0mm 0.03kPa 11m/s
22:00 ☾
-0.7°C 0mm 96% 0cm -0.08°C 0mm 0.03kPa 11m/s
23:00 ☾
-0.9°C 0mm 96% 0cm -0.26°C 0mm 0.03kPa 9.4m/s
Sat, Mar 7 Sunrise 07:08 Sunset 18:00
24:00 ☾
-1.4°C 0.01mm 91% 0cm -0.08°C 0mm 0.06kPa 9m/s
01:00 ☾
-1.2°C 0mm 92% 0cm -0.06°C 0mm 0.05kPa 10m/s
02:00 ☾
-1°C 0mm 93% 0cm 0.02°C 0mm 0.05kPa 11m/s
03:00 ☾
-0.7°C 0mm 93% 0cm 0.33°C 0mm 0.05kPa 11m/s
04:00 ☾
-0.5°C 0mm 92% 0cm 0.66°C 0mm 0.05kPa 12m/s
05:00 ☾
-1°C 0mm 88% 0cm 0.7°C 0mm 0.07kPa 12m/s
06:00 ☾
-1.3°C 0mm 90% 0cm 0.08°C 0mm 0.06kPa 11m/s
07:00 ☾
-1.6°C 0mm 92% 0cm -0.42°C 0mm 0.05kPa 9.7m/s
08:00
-1.4°C 0mm 91% 0cm -0.2°C 0mm 0.05kPa 9.7m/s
09:00
-1.4°C 0mm 89% 0cm 0.15°C 0mm 0.07kPa 6.8m/s
10:00
-1.3°C 0mm 88% 0cm 0.5°C 0mm 0.08kPa 3.9m/s
11:00
-1.2°C 0mm 86% 0cm 0.86°C 0mm 0.09kPa 1m/s
12:00
-1.8°C 0mm 88% 0cm -0.1°C 0mm 0.07kPa 0.97m/s
13:00
-2.4°C 0mm 91% 0cm -1.1°C 0mm 0.05kPa 0.88m/s
14:00
-2.9°C 0mm 93% 0cm -2°C 0mm 0.03kPa 0.8m/s
15:00
-3.1°C 0mm 93% 0cm -2.1°C 0mm 0.04kPa 0.94m/s
16:00
-3.2°C 0mm 93% 0cm -2.2°C 0mm 0.04kPa 1.1m/s
17:00
-3.3°C 0mm 93% 0cm -2.3°C 0mm 0.04kPa 1.2m/s
18:00
-3.5°C 0mm 90% 0cm -2.2°C 0mm 0.05kPa 3.4m/s
19:00 ☾
-3.7°C 0mm 88% 0cm -2.1°C 0mm 0.06kPa 5.6m/s
20:00 ☾
-4°C 0mm 86% 0cm -2°C 0mm 0.07kPa 7.8m/s
21:00 ☾
-4°C 0mm 86% 0cm -1.9°C 0mm 0.07kPa 8.7m/s
22:00 ☾
-4°C 0mm 86% 0cm -1.9°C 0mm 0.08kPa 9.6m/s
23:00 ☾
-4°C 0mm 85% 0cm -1.9°C 0mm 0.08kPa 10m/s
Sun, Mar 8 Sunrise 07:04 Sunset 18:02
24:00 ☾
-4.3°C 0mm 82% 0cm -1.7°C 0mm 0.1kPa 11m/s
01:00 ☾
-4.5°C 0mm 80% 0cm -1.5°C 0mm 0.11kPa 11m/s
02:00 ☾
-4.8°C 0mm 77% 0cm -1.2°C 0mm 0.13kPa 11m/s
03:00 ☾
-4.8°C 0mm 72% 0cm -0.36°C 0mm 0.17kPa 12m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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