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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 Spread4.6°C
Visibility24135 (Clear)
Relative Humidity72%
Wind Speed2.7m/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%
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%
12:000%
13:000%
14:000%
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16:000%
17:000%
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20:000%
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 05:31 Sunset 20:52
05:00 ☾
63% -0.4°C 0mm 72% 0cm -4° 4.2°C 0mm 0.23kPa 24135m 9.3m/s 2.7m/s
06:00
74% -0.7°C 0mm 71% 0cm 2.6° 4.1°C 0mm 0.24kPa 24134m 11m/s 3.1m/s
07:00
55% -0.5°C 0mm 66% 0cm 9.4° 5.2°C 0mm 0.3kPa 24135m 12m/s 3.4m/s
08:00
35% -0.2°C 0mm 62% 0cm 17° 6.6°C 0mm 0.37kPa 24134m 11m/s 3.8m/s
09:00
16% 0°C 0mm 62% 0cm 24° 6.9°C 0mm 0.38kPa 24134m 9.9m/s 4m/s
10:00
11% 0°C 0mm 60% 0cm 30° 7.3°C 0mm 0.41kPa 24134m 8.9m/s 4.8m/s
11:00
5% -0.2°C 0mm 57% 0cm 36° 7.7°C 0mm 0.45kPa 24134m 8.2m/s 5.4m/s
12:00
0% -0.8°C 0mm 49% 0cm 39° 9.5°C 0mm 0.61kPa 24134m 8.3m/s 5.4m/s
13:00
0% -1.5°C 0mm 41% 0cm 41° 11°C 0mm 0.78kPa 24134m 8.5m/s 5.4m/s
14:00
1% -1.6°C 0mm 39% 0cm 40° 12°C 0mm 0.84kPa 24135m 8.8m/s 5.7m/s
15:00
1% -2°C 0mm 38% 0cm 37° 12°C 0mm 0.87kPa 24135m 9.1m/s 5.8m/s
16:00
1% -1.5°C 0mm 41% 0cm 32° 11°C 0mm 0.78kPa 24135m 8.5m/s 5.9m/s
17:00
1% 0.1°C 0mm 50% 0cm 26° 10°C 0mm 0.62kPa 24134m 10m/s 5.9m/s
18:00
1% 0°C 0mm 50% 0cm 19° 10°C 0.13mm 0.62kPa 24135m 12m/s 5.6m/s
19:00
1% -2.3°C 0mm 45% 0cm 12° 9.1°C 0.19mm 0.64kPa 24134m 14m/s 6.5m/s
20:00
0% -2.8°C 0mm 50% 0cm 5.2° 6.9°C 0.19mm 0.5kPa 24134m 15m/s 6.6m/s
21:00 ☾
0% -4°C 0.01mm 51% 0cm -1.4° 5.3°C 0.19mm 0.44kPa 24134m 15m/s 6.8m/s
22:00 ☾
17% -5.2°C 0mm 50% 0cm -7.3° 4.1°C 0mm 0.41kPa 24134m 13m/s 6.7m/s
23:00 ☾
33% -7.4°C 0mm 47% 0cm -12° 2.6°C 0.06mm 0.39kPa 24134m 11m/s 6.2m/s
Thu, Apr 23 Sunrise 05:31 Sunset 20:52
24:00 ☾
50% -8.3°C 0mm 48% 0cm -15° 1.5°C 0.06mm 0.35kPa 24134m 12m/s 5.6m/s
01:00 ☾
58% -8.4°C 0mm 49% 0cm -16° 1.1°C 0.06mm 0.34kPa 24134m 11m/s 5.6m/s
02:00 ☾
65% -8.6°C 0mm 50% 0cm -16° 0.49°C 0.06mm 0.31kPa 24134m 11m/s 5.8m/s
03:00 ☾
73% -8.4°C 0mm 53% 0cm -13° -0.05°C 0.06mm 0.28kPa 24135m 11m/s 5.8m/s
04:00 ☾
73% -8.5°C 0mm 55% 0cm -9.1° -0.68°C 0mm 0.26kPa 24134m 12m/s 6m/s
05:00 ☾
73% -8.4°C 0mm 58% 0cm -3.6° -1.2°C 0mm 0.23kPa 24134m 12m/s 5.8m/s
06:00
73% -8.2°C 0mm 60% 0cm 2.9° -1.5°C 0mm 0.22kPa 24134m 12m/s 5.8m/s
07:00
69% -7.9°C 0mm 60% 0cm 9.7° -1.1°C 0mm 0.23kPa 24135m 12m/s 6m/s
08:00
64% -7.8°C 0mm 57% 0cm 17° -0.21°C 0mm 0.26kPa 24134m 12m/s 6.1m/s
09:00
60% -7.9°C 0mm 52% 0cm 24° 0.71°C 0mm 0.31kPa 24134m 11m/s 6.3m/s
10:00
52% -8.7°C 0mm 47% 0cm 30° 1.4°C 0mm 0.36kPa 24135m 11m/s 6.8m/s
11:00
44% -9.1°C 0mm 42% 0cm 36° 2.5°C 0mm 0.42kPa 24135m 11m/s 6.6m/s
12:00
36% -9.3°C 0mm 38% 0cm 40° 3.6°C 0mm 0.49kPa 24134m 11m/s 6.6m/s
13:00
28% -9.1°C 0mm 36% 0cm 41° 4.6°C 0mm 0.54kPa 24135m 11m/s 6.8m/s
14:00
21% -8.6°C 0mm 36% 0cm 41° 5.4°C 0mm 0.57kPa 24134m 11m/s 6.8m/s
15:00
13% -8.2°C 0mm 36% 0cm 38° 5.9°C 0mm 0.6kPa 24134m 11m/s 6.5m/s
16:00
10% -8°C 0mm 34% 0cm 33° 6.6°C 0mm 0.64kPa 24134m 12m/s 6.7m/s
17:00
8% -6.8°C 0mm 37% 0cm 27° 6.8°C 0mm 0.62kPa 24134m 12m/s 5.6m/s
18:00
5% -6.1°C 0mm 39% 0cm 20° 6.7°C 0mm 0.6kPa 24134m 11m/s 5.2m/s
19:00
4% -5.6°C 0mm 44% 0cm 12° 5.8°C 0mm 0.52kPa 24135m 11m/s 4.9m/s
20:00
2% -5.4°C 0mm 48% 0cm 5.5° 4.8°C 0mm 0.45kPa 24135m 12m/s 4.6m/s
21:00 ☾
1% -5.2°C 0mm 52% 0cm -1° 3.7°C 0mm 0.38kPa 24135m 9.5m/s 4m/s
22:00 ☾
7% -5.1°C 0mm 56% 0cm -7° 2.8°C 0mm 0.33kPa 24135m 9.9m/s 3.6m/s
23:00 ☾
13% -5.1°C 0mm 57% 0cm -12° 2.5°C 0mm 0.31kPa 24134m 11m/s 3.6m/s
Fri, Apr 24 Sunrise 05:28 Sunset 20:55
24:00 ☾
19% -5.1°C 0mm 59% 0cm -15° 2.1°C 0mm 0.29kPa 24134m 11m/s 3.6m/s
01:00 ☾
17% -4.9°C 0mm 62% 0cm -16° 1.7°C 0mm 0.26kPa 24135m 11m/s 3.5m/s
02:00 ☾
16% -4.6°C 0mm 66% 0cm -15° 1°C 0mm 0.23kPa 24135m 10m/s 3.2m/s
03:00 ☾
14% -4.3°C 0mm 69% 0cm -13° 0.79°C 0mm 0.2kPa 24135m 9.8m/s 3.2m/s
04:00 ☾
21% -4.1°C 0mm 73% 0cm -8.8° 0.24°C 0mm 0.17kPa 24135m 9m/s 3m/s
05:00 ☾
28% -3.8°C 0mm 77% 0cm -3.3° -0.31°C 0mm 0.14kPa 24135m 8.6m/s 2.8m/s
06:00
35% -3.7°C 0mm 81% 0cm 3.2° -0.85°C 0mm 0.11kPa 24134m 8.7m/s 2.6m/s
07:00
38% -3.5°C 0mm 74% 0cm 10° 0.55°C 0mm 0.16kPa 24135m 8.6m/s 2.8m/s
08:00
40% -3.5°C 0mm 65% 0cm 17° 2.3°C 0mm 0.25kPa 24134m 7.6m/s 3.4m/s
09:00
43% -3.9°C 0mm 56% 0cm 24° 4°C 0mm 0.36kPa 24134m 6.6m/s 3.6m/s
10:00
51% -4.2°C 0mm 48% 0cm 31° 6°C 0mm 0.48kPa 24134m 5.7m/s 3.4m/s
11:00
59% -4.8°C 0mm 40% 0cm 36° 8°C 0mm 0.64kPa 24135m 4.9m/s 3.1m/s
12:00
67% -6°C 0mm 32% 0cm 40° 9.9°C 0mm 0.83kPa 24135m 4m/s 2.9m/s
13:00
62% -5.1°C 0mm 38% 0cm 42° 8.4°C 0mm 0.69kPa 24135m 3m/s 2.2m/s
14:00
56% -4.7°C 0mm 43% 0cm 41° 6.9°C 0mm 0.56kPa 24135m 1.9m/s 1.5m/s
15:00
51% -4.4°C 0mm 49% 0cm 38° 5.4°C 0mm 0.46kPa 24135m 0.8m/s 0.74m/s
16:00
42% -4.1°C 0mm 51% 0cm 33° 5.1°C 0mm 0.43kPa 24135m 1.2m/s 1.1m/s
17:00
32% -3.8°C 0mm 54% 0cm 27° 4.7°C 0mm 0.39kPa 24135m 1.6m/s 1.4m/s
18:00
23% -3.6°C 0mm 56% 0cm 20° 4.4°C 0mm 0.37kPa 24135m 2m/s 1.8m/s
19:00
20% -3.8°C 0mm 56% 0cm 13° 4.2°C 0mm 0.36kPa 24135m 2.7m/s 1.8m/s
20:00
17% -4°C 0mm 56% 0cm 5.7° 3.9°C 0mm 0.36kPa 24135m 3.4m/s 1.9m/s
21:00 ☾
14% -4.3°C 0mm 56% 0cm -0.69° 3.7°C 0mm 0.35kPa 24135m 4.2m/s 2m/s
22:00 ☾
15% -4.1°C 0mm 56% 0cm -6.7° 3.9°C 0mm 0.35kPa 24135m 4.9m/s 2m/s
23:00 ☾
17% -3.9°C 0mm 56% 0cm -11° 4°C 0mm 0.36kPa 24135m 5.6m/s 2.1m/s
Sat, Apr 25 Sunrise 05:25 Sunset 20:57
24:00 ☾
18% -3.8°C 0mm 56% 0cm -14° 4.2°C 0mm 0.36kPa 24135m 6.3m/s 2.2m/s
01:00 ☾
15% -2.5°C 0mm 58% 0cm -16° 5.2°C 0mm 0.38kPa 24135m 6m/s 2.5m/s
02:00 ☾
13% -1.3°C 0mm 59% 0cm -15° 6.2°C 0mm 0.39kPa 24135m 5.7m/s 2.9m/s
03:00 ☾
10% 0°C 0mm 60% 0cm -13° 7.2°C 0mm 0.4kPa 24135m 5.4m/s 3.3m/s
04:00 ☾
9% -0.2°C 0.003mm 56% 0cm -8.5° 8°C 0.02mm 0.47kPa 24135m 5.6m/s 3.5m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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