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More Fog Hunter in Southern Finland
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Rule Fog Hunter

Repovesi - Fog Hunter - Southern Finland

Repovesi Nationalpark, Kymenlaakso, 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 Spread9.8°C
Visibility24134 (Clear)
Relative Humidity50%
Wind Speed1.8m/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 86 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%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
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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14:000%
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16:000%
17:000%
18:000%
19:000%
20:000%
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
Tue, Apr 21 Sunrise 05:34 Sunset 20:49
22:00 ☾
40% -1.6°C 0mm 50% 0cm -7.6° 8.2°C 0mm 0.55kPa 24134m 1.8m/s 1.8m/s
23:00 ☾
33% -1.3°C 0mm 54% 0cm -12° 7.5°C 0mm 0.48kPa 24134m 1.9m/s 1.9m/s
Wed, Apr 22 Sunrise 05:34 Sunset 20:49
24:00 ☾
25% -1°C 0mm 57% 0cm -15° 7°C 0mm 0.43kPa 24134m 2.1m/s 2.2m/s
01:00 ☾
30% -0.7°C 0mm 60% 0cm -17° 6.4°C 0mm 0.38kPa 24134m 3.8m/s 2.3m/s
02:00 ☾
36% -0.5°C 0mm 64% 0cm -16° 5.6°C 0mm 0.32kPa 24135m 5.5m/s 2.4m/s
03:00 ☾
41% 0.1°C 0mm 69% 0cm -14° 5.3°C 0mm 0.27kPa 24134m 5.7m/s 2.3m/s
04:00 ☾
52% 0.3°C 0mm 73% 0cm -9.5° 4.8°C 0mm 0.23kPa 24135m 7.3m/s 2.4m/s
05:00 ☾
63% 0.1°C 0mm 74% 0cm -4° 4.3°C 0mm 0.21kPa 24134m 8.8m/s 2.5m/s
06:00
74% -0.2°C 0mm 74% 0cm 2.6° 4°C 0mm 0.22kPa 24135m 11m/s 2.9m/s
07:00
55% -0.3°C 0mm 67% 0cm 9.4° 5.3°C 0mm 0.29kPa 24134m 11m/s 3.3m/s
08:00
35% 0°C 0mm 62% 0cm 17° 6.7°C 0mm 0.37kPa 24135m 10m/s 3.4m/s
09:00
16% 0.2°C 0mm 61% 0cm 24° 7.1°C 0mm 0.39kPa 24134m 10m/s 4m/s
10:00
11% 0°C 0mm 59% 0cm 30° 7.4°C 0mm 0.42kPa 24134m 9m/s 4.6m/s
11:00
5% -0.3°C 0mm 55% 0cm 36° 8.1°C 0mm 0.48kPa 24134m 8m/s 5.2m/s
12:00
0% -0.8°C 0mm 48% 0cm 39° 9.6°C 0mm 0.61kPa 24135m 8m/s 5.4m/s
13:00
0% -1.4°C 0mm 42% 0cm 41° 11°C 0mm 0.76kPa 24134m 8.1m/s 5.4m/s
14:00
1% -1.7°C 0mm 40% 0cm 40° 12°C 0mm 0.83kPa 24134m 8.2m/s 5.6m/s
15:00
1% -1.6°C 0mm 38% 0cm 37° 12°C 0mm 0.88kPa 24135m 8.9m/s 5.8m/s
16:00
1% -1.7°C 0mm 39% 0cm 32° 12°C 0mm 0.85kPa 24135m 9.7m/s 6.2m/s
17:00
1% -0.4°C 0mm 48% 0cm 26° 10°C 0mm 0.65kPa 24135m 9.6m/s 5.1m/s
18:00
1% -0.4°C 0mm 48% 0cm 19° 10°C 0mm 0.65kPa 24135m 12m/s 5.5m/s
19:00
1% -0.7°C 0mm 50% 0cm 12° 9°C 0.06mm 0.57kPa 24135m 13m/s 6.3m/s
20:00
0% -1.9°C 0mm 50% 0cm 5.2° 7.7°C 0.06mm 0.52kPa 24134m 15m/s 6.5m/s
21:00 ☾
0% -3.4°C 0mm 52% 0cm -1.4° 5.8°C 0.06mm 0.45kPa 24134m 14m/s 6.8m/s
22:00 ☾
17% -3.7°C 0mm 56% 0.05cm -7.3° 4.2°C 0mm 0.36kPa 24134m 13m/s 7.5m/s
23:00 ☾
33% -9°C 0mm 43% 0cm -12° 2.4°C 0.06mm 0.41kPa 24134m 13m/s 6.5m/s
Thu, Apr 23 Sunrise 05:31 Sunset 20:52
24:00 ☾
50% -9.3°C 0mm 45% 0cm -15° 1.3°C 0.06mm 0.37kPa 24135m 13m/s 6.1m/s
01:00 ☾
58% -9.1°C 0mm 48% 0cm -16° 0.81°C 0.06mm 0.34kPa 24135m 13m/s 6.2m/s
02:00 ☾
65% -8.4°C 0mm 52% 0cm -16° 0.25°C 0.06mm 0.3kPa 24135m 12m/s 6.4m/s
03:00 ☾
73% -8°C 0mm 55% 0cm -13° -0.16°C 0.06mm 0.27kPa 24134m 13m/s 6.3m/s
04:00 ☾
73% -7.9°C 0mm 58% 0cm -9.1° -0.6°C 0mm 0.25kPa 24135m 13m/s 6.3m/s
05:00 ☾
73% -8.1°C 0mm 59% 0cm -3.6° -1°C 0mm 0.23kPa 24135m 12m/s 6.1m/s
06:00
73% -8.2°C 0mm 60% 0cm 2.9° -1.4°C 0mm 0.22kPa 24135m 12m/s 5.9m/s
07:00
69% -8°C 0mm 59% 0cm 9.7° -0.99°C 0mm 0.23kPa 24135m 12m/s 5.8m/s
08:00
64% -7.6°C 0mm 57% 0cm 17° -0.07°C 0mm 0.26kPa 24135m 12m/s 5.9m/s
09:00
60% -7.8°C 0mm 53% 0cm 24° 0.7°C 0mm 0.3kPa 24135m 11m/s 6.4m/s
10:00
52% -8.3°C 0mm 47% 0cm 30° 1.8°C 0mm 0.37kPa 24135m 10m/s 6.5m/s
11:00
44% -8.7°C 0mm 42% 0cm 36° 3°C 0mm 0.44kPa 24134m 11m/s 6.4m/s
12:00
36% -8.7°C 0mm 39% 0cm 40° 4.1°C 0mm 0.5kPa 24135m 10m/s 6.5m/s
13:00
28% -8.1°C 0mm 38% 0cm 41° 5.2°C 0mm 0.55kPa 24135m 10m/s 6.6m/s
14:00
21% -7.5°C 0mm 38% 0cm 41° 5.8°C 0mm 0.58kPa 24135m 10m/s 6.7m/s
15:00
13% -7.3°C 0mm 37% 0cm 38° 6.2°C 0mm 0.59kPa 24134m 11m/s 6.5m/s
16:00
10% -7°C 0mm 37% 0cm 33° 6.5°C 0mm 0.6kPa 24135m 11m/s 6.3m/s
17:00
8% -5.8°C 0mm 40% 0cm 27° 6.7°C 0mm 0.58kPa 24135m 12m/s 5.5m/s
18:00
5% -5.2°C 0mm 43% 0cm 20° 6.5°C 0mm 0.55kPa 24134m 12m/s 4.8m/s
19:00
4% -5°C 0mm 45% 0cm 12° 6°C 0mm 0.51kPa 24135m 11m/s 4.2m/s
20:00
2% -4.8°C 0mm 49% 0cm 5.5° 5.1°C 0mm 0.45kPa 24134m 11m/s 4.3m/s
21:00 ☾
1% -4.5°C 0mm 54% 0cm -1° 4°C 0mm 0.38kPa 24134m 9.5m/s 3.9m/s
22:00 ☾
7% -4.1°C 0mm 58% 0cm -7° 3.3°C 0mm 0.33kPa 24134m 10m/s 3.7m/s
23:00 ☾
13% -3.8°C 0mm 62% 0cm -12° 2.7°C 0mm 0.28kPa 24134m 11m/s 3.7m/s
Fri, Apr 24 Sunrise 05:28 Sunset 20:55
24:00 ☾
19% -3.3°C 0mm 66% 0cm -15° 2.4°C 0mm 0.25kPa 24134m 11m/s 3.6m/s
01:00 ☾
17% -3°C 0mm 70% 0cm -16° 1.9°C 0mm 0.21kPa 24135m 11m/s 3.7m/s
02:00 ☾
16% -2.7°C 0mm 73% 0cm -15° 1.5°C 0mm 0.18kPa 24135m 11m/s 3.6m/s
03:00 ☾
14% -2.7°C 0mm 76% 0cm -13° 0.99°C 0mm 0.15kPa 24135m 10m/s 3.5m/s
04:00 ☾
21% -2.9°C 0mm 64% 0cm -8.8° 3.3°C 0mm 0.28kPa 24135m 8.6m/s 3.5m/s
05:00 ☾
28% -3.6°C 0mm 52% 0cm -3.3° 5.6°C 0mm 0.44kPa 24135m 6.8m/s 3.6m/s
06:00
35% -5.2°C 0mm 39% 0cm 3.2° 7.9°C 0mm 0.65kPa 24135m 5m/s 3.6m/s
07:00
38% -5.3°C 0mm 37% 0cm 10° 8.6°C 0mm 0.7kPa 24135m 4.5m/s 3.3m/s
08:00
40% -5.5°C 0mm 35% 0cm 17° 9.3°C 0mm 0.77kPa 24135m 4m/s 3m/s
09:00
43% -5.8°C 0mm 32% 0cm 24° 10°C 0mm 0.83kPa 24135m 3.4m/s 2.7m/s
10:00
51% -5.8°C 0mm 32% 0cm 31° 10°C 0mm 0.83kPa 24135m 3.1m/s 2.6m/s
11:00
59% -5.8°C 0mm 32% 0cm 36° 9.9°C 0mm 0.83kPa 24135m 2.9m/s 2.5m/s
12:00
67% -5.9°C 0mm 32% 0cm 40° 9.9°C 0mm 0.83kPa 24135m 2.6m/s 2.4m/s
13:00
62% -5.1°C 0mm 38% 0cm 42° 8.3°C 0mm 0.68kPa 24135m 2m/s 1.8m/s
14:00
56% -4.7°C 0mm 44% 0cm 41° 6.7°C 0mm 0.55kPa 24135m 1.3m/s 1.2m/s
15:00
51% -4.5°C 0mm 50% 0cm 38° 5.2°C 0mm 0.45kPa 24135m 0.74m/s 0.62m/s
16:00
42% -4.2°C 0mm 53% 0cm 33° 4.6°C 0mm 0.4kPa 24135m 1m/s 0.93m/s
17:00
32% -3.9°C 0mm 56% 0cm 27° 4°C 0mm 0.35kPa 24135m 1.3m/s 1.2m/s
18:00
23% -3.6°C 0mm 60% 0cm 20° 3.4°C 0mm 0.31kPa 24135m 1.5m/s 1.5m/s
19:00
20% -3.8°C 0mm 60% 0cm 13° 3.2°C 0mm 0.31kPa 24135m 1.9m/s 1.6m/s
20:00
17% -3.9°C 0mm 60% 0cm 5.7° 3°C 0mm 0.3kPa 24135m 2.4m/s 1.7m/s
21:00 ☾
14% -4°C 0mm 60% 0cm -0.69° 2.9°C 0mm 0.3kPa 24135m 2.8m/s 1.8m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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