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More Fog Hunter in Southern Finland
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Rule Fog Hunter

Vesijärvi - Fog Hunter - Southern Finland

Lahti, Päijänne Tavastia, 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 · ≥ 60.0%

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

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread4.8°C
Visibility24135 (Clear)
Relative Humidity71%
Wind Speed2.3m/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 92 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Helsinki
Fog Probability
≥ 60.0%
Tue, Apr 21
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%
Wed, Apr 22
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%
22:000%
23:000%
Thu, Apr 23
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%
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15:000%
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18:000%
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21:000%
22:000%
23:000%
Fri, Apr 24
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
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13:000%
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21:000%
22:000%
23:000%
Sat, Apr 25
24:000%
01:000%
02:000%
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
Clear Sky Probability (Ensemble)
%
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Solar Elevation
°
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Visibility
m
Wind Gusts
m/s
Wind Speed
m/s
Wed, Apr 22 Sunrise 05:37 Sunset 20:56
05:00 ☾
72% -0.8°C 0mm 71% 0cm -4.6° 4°C 0mm 0.23kPa 24135m 8.3m/s 2.3m/s
06:00
71% -0.8°C 0mm 72% 0cm 2° 3.6°C 0mm 0.22kPa 24134m 9.3m/s 2.4m/s
07:00
52% -0.6°C 0mm 68% 0cm 8.8° 4.9°C 0mm 0.28kPa 24135m 11m/s 3.4m/s
08:00
33% 0.1°C 0mm 63% 0cm 16° 6.6°C 0mm 0.36kPa 24134m 11m/s 3.9m/s
09:00
14% 0.6°C 0mm 64% 0cm 23° 6.9°C 0mm 0.35kPa 24134m 9.8m/s 4m/s
10:00
9% 0.7°C 0mm 63% 0cm 30° 7.3°C 0mm 0.38kPa 24134m 9.5m/s 4.5m/s
11:00
5% 0.1°C 0mm 57% 0cm 35° 8.1°C 0mm 0.46kPa 24134m 9.3m/s 4.9m/s
12:00
0% -0.8°C 0mm 49% 0cm 39° 9.4°C 0mm 0.6kPa 24134m 9.2m/s 5.7m/s
13:00
0% -1.1°C 0mm 44% 0cm 41° 11°C 0mm 0.73kPa 24134m 9m/s 5.6m/s
14:00
0% -1.3°C 0mm 41% 0cm 41° 12°C 0mm 0.81kPa 24135m 8.8m/s 5.6m/s
15:00
0% -1.2°C 0mm 40% 0cm 38° 12°C 0mm 0.83kPa 24135m 9.1m/s 5.9m/s
16:00
1% -1.1°C 0mm 41% 0cm 33° 12°C 0mm 0.81kPa 24135m 11m/s 5.8m/s
17:00
2% -0.1°C 0mm 46% 0cm 27° 11°C 0mm 0.71kPa 24134m 11m/s 5.3m/s
18:00
3% 0.1°C 0mm 47% 0cm 20° 11°C 0mm 0.71kPa 24135m 12m/s 5.2m/s
19:00
2% 0°C 0mm 52% 0cm 13° 9.4°C 0.19mm 0.57kPa 24134m 12m/s 6.8m/s
20:00
2% -1.5°C 0mm 51% 0cm 5.7° 8°C 0.19mm 0.52kPa 24134m 15m/s 6.3m/s
21:00 ☾
1% -3.5°C 0mm 48% 0cm -0.9° 6.6°C 0.19mm 0.5kPa 24134m 15m/s 6.9m/s
22:00 ☾
32% -5.8°C 0mm 45% 0cm -7° 5.1°C 0mm 0.48kPa 24134m 17m/s 6m/s
23:00 ☾
62% -6.4°C 0mm 46% 0cm -12° 4.1°C 0mm 0.44kPa 24134m 14m/s 6.1m/s
Thu, Apr 23 Sunrise 05:37 Sunset 20:56
24:00 ☾
93% -8.9°C 0mm 45% 0cm -15° 1.7°C 0mm 0.38kPa 24134m 12m/s 6m/s
01:00 ☾
93% -8.6°C 0mm 49% 0cm -16° 0.89°C 0mm 0.33kPa 24134m 11m/s 5.7m/s
02:00 ☾
94% -8.3°C 0mm 51% 0cm -16° 0.69°C 0mm 0.31kPa 24134m 11m/s 5.6m/s
03:00 ☾
94% -7.9°C 0mm 54% 0cm -14° 0.23°C 0mm 0.28kPa 24135m 11m/s 5.5m/s
04:00 ☾
91% -8.5°C 0mm 54% 0cm -9.6° -0.44°C 0mm 0.27kPa 24134m 11m/s 5.8m/s
05:00 ☾
89% -8.5°C 0mm 57% 0cm -4.2° -1.1°C 0mm 0.24kPa 24134m 11m/s 6m/s
06:00
86% -8.3°C 0mm 59% 0cm 2.3° -1.4°C 0mm 0.22kPa 24134m 12m/s 5.9m/s
07:00
86% -7.9°C 0mm 60% 0cm 9.1° -1.1°C 0mm 0.23kPa 24135m 12m/s 5.8m/s
08:00
85% -7.7°C 0mm 58% 0cm 16° -0.31°C 0mm 0.25kPa 24134m 12m/s 6.1m/s
09:00
85% -7.7°C 0mm 53% 0cm 23° 0.71°C 0mm 0.3kPa 24134m 11m/s 6.2m/s
10:00
74% -8.5°C 0mm 48% 0cm 30° 1.3°C 0mm 0.35kPa 24135m 11m/s 6.5m/s
11:00
64% -8.8°C 0mm 43% 0cm 36° 2.6°C 0mm 0.42kPa 24135m 11m/s 6.5m/s
12:00
53% -8.9°C 0mm 39% 0cm 40° 3.8°C 0mm 0.49kPa 24134m 11m/s 6.6m/s
13:00
48% -8.8°C 0mm 36% 0cm 42° 5°C 0mm 0.55kPa 24135m 11m/s 6.7m/s
14:00
42% -8.5°C 0mm 35% 0cm 41° 5.9°C 0mm 0.6kPa 24134m 11m/s 6.8m/s
15:00
37% -8.3°C 0mm 33% 0cm 38° 6.8°C 0mm 0.66kPa 24134m 11m/s 6.5m/s
16:00
31% -7.9°C 0mm 33% 0cm 33° 7.4°C 0mm 0.69kPa 24134m 11m/s 6.2m/s
17:00
25% -7°C 0mm 34% 0cm 27° 7.9°C 0mm 0.7kPa 24134m 11m/s 5.8m/s
18:00
19% -6.1°C 0mm 37% 0cm 20° 7.6°C 0mm 0.65kPa 24134m 10m/s 5.3m/s
19:00
15% -5.5°C 0mm 42% 0cm 13° 6.5°C 0mm 0.56kPa 24135m 9.7m/s 5.2m/s
20:00
10% -4.8°C 0mm 47% 0cm 6° 5.6°C 0mm 0.48kPa 24135m 9.6m/s 4.9m/s
21:00 ☾
6% -4.3°C 0mm 54% 0cm -0.53° 4.3°C 0mm 0.38kPa 24135m 9.1m/s 3.8m/s
22:00 ☾
9% -3.9°C 0mm 58% 0cm -6.7° 3.7°C 0mm 0.34kPa 24135m 8.9m/s 3.4m/s
23:00 ☾
11% -3.5°C 0mm 62% 0cm -11° 3.1°C 0mm 0.29kPa 24134m 9.1m/s 3.1m/s
Fri, Apr 24 Sunrise 05:34 Sunset 20:58
24:00 ☾
14% -3.4°C 0mm 66% 0cm -15° 2.4°C 0mm 0.25kPa 24134m 9.5m/s 2.9m/s
01:00 ☾
13% -3.4°C 0mm 68% 0cm -16° 2°C 0mm 0.23kPa 24135m 9.4m/s 2.8m/s
02:00 ☾
12% -3.3°C 0mm 69% 0cm -16° 1.8°C 0mm 0.22kPa 24135m 9.1m/s 2.9m/s
03:00 ☾
11% -3.3°C 0mm 70% 0cm -13° 1.6°C 0mm 0.21kPa 24135m 9m/s 3m/s
04:00 ☾
19% -3.3°C 0mm 72% 0cm -9.3° 1.2°C 0mm 0.19kPa 24135m 8.6m/s 2.9m/s
05:00 ☾
27% -3.2°C 0mm 74% 0cm -3.9° 0.79°C 0mm 0.16kPa 24135m 8.2m/s 2.6m/s
06:00
35% -3.3°C 0mm 79% 0cm 2.6° -0.15°C 0mm 0.12kPa 24134m 7.5m/s 2.2m/s
07:00
36% -3.3°C 0mm 73% 0cm 9.4° 1°C 0mm 0.18kPa 24135m 7.8m/s 2.5m/s
08:00
38% -3.5°C 0mm 64% 0cm 17° 2.6°C 0mm 0.27kPa 24134m 7m/s 3.1m/s
09:00
39% -3.7°C 0mm 58% 0cm 24° 3.8°C 0mm 0.34kPa 24134m 6.2m/s 3.3m/s
10:00
47% -3.9°C 0mm 50% 0cm 30° 5.8°C 0mm 0.46kPa 24134m 5.6m/s 3.1m/s
11:00
55% -4.4°C 0mm 42% 0cm 36° 7.8°C 0mm 0.61kPa 24135m 5m/s 2.9m/s
12:00
63% -5.5°C 0mm 34% 0cm 40° 9.7°C 0mm 0.8kPa 24135m 4.3m/s 2.8m/s
13:00
58% -5°C 0mm 38% 0cm 42° 8.6°C 0mm 0.69kPa 24135m 3.1m/s 2m/s
14:00
54% -4.7°C 0mm 42% 0cm 41° 7.4°C 0mm 0.6kPa 24135m 1.8m/s 1.2m/s
15:00
49% -4.6°C 0mm 46% 0cm 38° 6.2°C 0mm 0.51kPa 24135m 0.5m/s 0.48m/s
16:00
40% -4.3°C 0mm 48% 0cm 34° 5.8°C 0mm 0.48kPa 24135m 1.8m/s 0.94m/s
17:00
32% -4.1°C 0mm 50% 0cm 27° 5.5°C 0mm 0.45kPa 24135m 3m/s 1.4m/s
18:00
23% -3.9°C 0mm 52% 0cm 21° 5.1°C 0mm 0.42kPa 24135m 4.3m/s 1.9m/s
19:00
21% -3.1°C 0mm 56% 0cm 13° 4.9°C 0mm 0.38kPa 24135m 4.7m/s 1.9m/s
20:00
18% -2.3°C 0mm 60% 0cm 6.2° 4.8°C 0mm 0.34kPa 24135m 5.1m/s 1.8m/s
21:00
16% -1.6°C 0mm 64% 0cm -0.08° 4.6°C 0mm 0.31kPa 24135m 5.6m/s 1.8m/s
22:00 ☾
18% -1°C 0mm 69% 0cm -6.5° 4.3°C 0mm 0.26kPa 24135m 6.2m/s 2.1m/s
23:00 ☾
19% -0.4°C 0mm 73% 0cm -11° 3.9°C 0mm 0.22kPa 24135m 6.9m/s 2.3m/s
Sat, Apr 25 Sunrise 05:31 Sunset 21:01
24:00 ☾
21% 0.1°C 0mm 78% 0cm -14° 3.6°C 0mm 0.17kPa 24135m 7.6m/s 2.5m/s
01:00 ☾
16% 0.3°C 0mm 73% 0cm -16° 4.6°C 0mm 0.23kPa 24135m 7.2m/s 2.7m/s
02:00 ☾
12% 0.3°C 0mm 68% 0cm -15° 5.7°C 0mm 0.29kPa 24135m 6.8m/s 3m/s
03:00 ☾
7% 0.4°C 0mm 64% 0cm -13° 6.8°C 0mm 0.36kPa 24135m 6.4m/s 3.2m/s
04:00 ☾
5% 0°C 0.003mm 60% 0cm -9° 7.2°C 0mm 0.4kPa 24135m 6.6m/s 3.4m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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