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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 · ≥ 75.0%

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 Spread0.8°C
Visibility24134 (Clear)
Relative Humidity95%
Wind Speed2.6m/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 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Helsinki
Fog Probability
≥ 75.0%
Fri, Jun 5
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%
Sat, Jun 6
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%
Sun, Jun 7
24:000%
01:000%
02:000%
03:000%
04:0043%
05:0062%
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%
Mon, Jun 8
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%
Tue, Jun 9
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
08:000%
09:000%
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
Sat, Jun 6 Sunrise 03:42 Sunset 22:40
11:00
0% 14°C 0mm 95% 0cm 45° 15°C 1.1mm 0.08kPa 24134m 10m/s 2.6m/s
12:00
0% 15°C 0mm 88% 0cm 50° 17°C 1.1mm 0.24kPa 24135m 11m/s 3.8m/s
13:00
0% 15°C 0mm 78% 0cm 51° 19°C 1.1mm 0.48kPa 24135m 9m/s 5m/s
14:00
0% 14°C 0mm 80% 0cm 51° 18°C 1.1mm 0.4kPa 24134m 9.2m/s 4.4m/s
15:00
0% 14°C 0mm 82% 0cm 47° 17°C 1.1mm 0.35kPa 24134m 9.1m/s 3.6m/s
16:00
0% 16°C 0mm 77% 0cm 42° 20°C 0.25mm 0.54kPa 17285m 8.4m/s 5.7m/s
17:00
0% 15°C 0.01mm 90% 0cm 35° 16°C 0.38mm 0.19kPa 24135m 11m/s 4.7m/s
18:00
0% 15°C 1.2mm 95% 0cm 28° 16°C 0.88mm 0.09kPa 9810m 11m/s 4.4m/s
19:00
0% 15°C 0.08mm 98% 0cm 21° 15°C 1.4mm 0.04kPa 9117m 11m/s 4.1m/s
20:00
0% 15°C 0.41mm 98% 0cm 14° 15°C 1.6mm 0.03kPa 3935m 9.4m/s 3.7m/s
21:00
0% 15°C 0.53mm 98% 0cm 7.9° 15°C 2mm 0.03kPa 3261m 9.4m/s 3.5m/s
22:00
0% 15°C 0.29mm 98% 0cm 2.6° 15°C 1.3mm 0.03kPa 1534m 9.4m/s 4.1m/s
23:00 ☾
0% 13°C 0mm 97% 0cm -1.8° 14°C 1.3mm 0.05kPa 24135m 11m/s 3.9m/s
Sun, Jun 7 Sunrise 03:42 Sunset 22:40
24:00 ☾
0% 12°C 0mm 96% 0cm -4.8° 12°C 1.3mm 0.05kPa 24135m 10m/s 4.3m/s
01:00 ☾
1% 9.8°C 0.07mm 96% 0cm -6° 10°C 1.3mm 0.05kPa 22691m 9.8m/s 4.7m/s
02:00 ☾
3% 11°C 0.02mm 97% 0cm -5.5° 11°C 1.4mm 0.04kPa 22425m 11m/s 4.6m/s
03:00 ☾
4% 11°C 0mm 94% 0cm -3.2° 12°C 1.4mm 0.09kPa 24134m 12m/s 4.2m/s
04:00
14% 10°C 0mm 97% 0cm 0.93° 11°C 0mm 0.04kPa 24134m 11m/s 3.7m/s
05:00
23% 10°C 0mm 97% 0cm 5.7° 11°C 0mm 0.03kPa 24135m 11m/s 3.5m/s
06:00
33% 11°C 0mm 94% 0cm 12° 11°C 0mm 0.07kPa 24134m 12m/s 3.6m/s
07:00
36% 11°C 0mm 90% 0cm 18° 13°C 0mm 0.15kPa 24134m 11m/s 3.7m/s
08:00
38% 11°C 0mm 80% 0cm 26° 14°C 0mm 0.32kPa 24135m 8.1m/s 4.2m/s
09:00
41% 9.9°C 0mm 65% 0cm 33° 17°C 0mm 0.66kPa 24135m 7.3m/s 4.2m/s
10:00
57% 9.3°C 0mm 55% 0cm 40° 18°C 0mm 0.96kPa 24135m 7m/s 4.4m/s
11:00
72% 8.7°C 0mm 49% 0cm 45° 20°C 0mm 1.2kPa 24134m 7.3m/s 4.5m/s
12:00
88% 8.1°C 0mm 44% 0cm 50° 21°C 0mm 1.4kPa 24135m 7.2m/s 4.7m/s
13:00
88% 7.3°C 0mm 41% 0cm 52° 21°C 0mm 1.4kPa 24135m 7.1m/s 5.1m/s
14:00
89% 6.8°C 0mm 39% 0cm 51° 22°C 0mm 1.6kPa 24135m 7m/s 5m/s
15:00
89% 6.4°C 0mm 37% 0cm 47° 22°C 0mm 1.6kPa 24135m 6.7m/s 4.7m/s
16:00
87% 6.5°C 0mm 37% 0cm 42° 22°C 0mm 1.6kPa 24134m 6.3m/s 4.7m/s
17:00
84% 6.3°C 0mm 37% 0cm 36° 22°C 0mm 1.6kPa 24135m 6.2m/s 4.7m/s
18:00
82% 6.3°C 0mm 37% 0cm 28° 22°C 0mm 1.6kPa 24135m 6.1m/s 4.8m/s
19:00
82% 7.5°C 0mm 42% 0cm 21° 21°C 0mm 1.4kPa 24135m 5.7m/s 4.2m/s
20:00
81% 8.1°C 0mm 48% 0cm 14° 19°C 0mm 1.2kPa 24134m 6.3m/s 4m/s
21:00
81% 9°C 0mm 58% 0cm 8° 17°C 0mm 0.82kPa 24135m 7.9m/s 3.6m/s
22:00
82% 9.5°C 0mm 72% 0cm 2.7° 15°C 0mm 0.47kPa 24134m 8.3m/s 2.8m/s
23:00 ☾
83% 9.8°C 0mm 85% 0cm -1.7° 12°C 0mm 0.22kPa 24134m 8.5m/s 2.5m/s
Mon, Jun 8 Sunrise 03:41 Sunset 22:42
24:00 ☾
84% 9.3°C 0mm 87% 0cm -4.7° 11°C 0mm 0.17kPa 24134m 7.4m/s 2.4m/s
01:00 ☾
83% 8.5°C 0mm 87% 0cm -5.9° 11°C 0mm 0.17kPa 24135m 5.4m/s 2.2m/s
02:00 ☾
83% 7.9°C 0mm 87% 0cm -5.4° 10°C 0mm 0.16kPa 24134m 2.1m/s 1.8m/s
03:00 ☾
82% 7.8°C 0mm 88% 0cm -3.1° 9.7°C 0mm 0.15kPa 24134m 1.4m/s 1.3m/s
04:00
73% 7.6°C 0mm 88% 0cm 0.99° 9.6°C 0mm 0.15kPa 24134m 0.92m/s 0.92m/s
05:00
65% 7.8°C 0mm 83% 0cm 5.8° 10°C 0mm 0.21kPa 24135m 0.61m/s 0.58m/s
06:00
56% 8.2°C 0mm 75% 0cm 12° 13°C 0mm 0.37kPa 24135m 0.52m/s 0.37m/s
07:00
50% 8.2°C 0mm 64% 0cm 19° 15°C 0mm 0.6kPa 24135m 0.72m/s 0.59m/s
08:00
43% 8.1°C 0mm 56% 0cm 26° 17°C 0mm 0.86kPa 24134m 0.51m/s 0.37m/s
09:00
37% 8.1°C 0mm 50% 0cm 33° 19°C 0mm 1.1kPa 24134m 1m/s 0.7m/s
10:00
31% 8°C 0mm 45% 0cm 40° 20°C 0mm 1.3kPa 24134m 1.2m/s 0.98m/s
11:00
25% 7.5°C 0mm 39% 0cm 46° 22°C 0mm 1.6kPa 24135m 0.72m/s 0.74m/s
12:00
19% 7.2°C 0mm 36% 0cm 50° 23°C 0mm 1.8kPa 24134m 0.61m/s 0.63m/s
13:00
15% 7.2°C 0mm 35% 0cm 52° 24°C 0mm 1.9kPa 24135m 0.43m/s 0.32m/s
14:00
11% 7.3°C 0mm 34% 0cm 51° 24°C 0mm 2kPa 24135m 0.51m/s 0.23m/s
15:00
7% 7.4°C 0mm 33% 0cm 47° 25°C 0mm 2.1kPa 24135m 0.64m/s 0.2m/s
16:00
9% 7.3°C 0mm 33% 0cm 42° 25°C 0mm 2.1kPa 24134m 1.1m/s 0.62m/s
17:00
12% 7.1°C 0mm 34% 0cm 36° 24°C 0mm 2kPa 24135m 1.6m/s 1.3m/s
18:00
14% 7.6°C 0mm 36% 0cm 29° 23°C 0mm 1.8kPa 24134m 1.8m/s 2.1m/s
19:00
13% 9.8°C 0mm 49% 0cm 21° 21°C 0mm 1.3kPa 24135m 5.6m/s 2.5m/s
20:00
12% 10°C 0mm 56% 0cm 14° 19°C 0mm 1kPa 24135m 4.1m/s 1.8m/s
21:00
11% 11°C 0mm 62% 0cm 8.1° 18°C 0mm 0.78kPa 24135m 2.1m/s 1.5m/s
22:00
12% 9.9°C 0mm 64% 0cm 2.7° 17°C 0.02mm 0.69kPa 23284m 2.5m/s 1.6m/s
23:00 ☾
12% 9°C 0mm 65% 0cm -1.6° 15°C 0.04mm 0.61kPa 22432m 2.9m/s 1.8m/s
Tue, Jun 9 Sunrise 03:40 Sunset 22:43
24:00 ☾
13% 8.1°C 0mm 67% 0cm -4.6° 14°C 0.06mm 0.54kPa 21581m 3.2m/s 1.9m/s
01:00 ☾
13% 8.5°C 0mm 64% 0cm -5.8° 15°C 0.06mm 0.64kPa 22432m 3.1m/s 1.8m/s
02:00 ☾
14% 8.9°C 0mm 61% 0cm -5.3° 17°C 0.06mm 0.74kPa 23284m 2.9m/s 1.8m/s
03:00 ☾
14% 9.3°C 0mm 58% 0cm -3° 18°C 0.06mm 0.86kPa 24135m 2.8m/s 1.7m/s
04:00
14% 9.9°C 0mm 61% 0cm 1.1° 17°C 0.06mm 0.77kPa 24135m 3.6m/s 2.1m/s
05:00
15% 10°C 0mm 65% 0cm 5.9° 17°C 0.06mm 0.67kPa 24135m 4.3m/s 2.5m/s
06:00
15% 11°C 0mm 69% 0cm 12° 17°C 0.06mm 0.58kPa 24135m 5.1m/s 2.9m/s
07:00
15% 11°C 0mm 71% 0cm 19° 16°C 0.06mm 0.54kPa 24135m 4.9m/s 2.8m/s
08:00
15% 11°C 0mm 72% 0cm 26° 16°C 0.06mm 0.5kPa 24135m 4.7m/s 2.7m/s
09:00
15% 11°C 0mm 74% 0cm 33° 16°C 0.06mm 0.46kPa 24135m 4.4m/s 2.6m/s
10:00
15% 11°C 0mm 68% 0cm 40° 17°C 0.04mm 0.61kPa 24135m 3.7m/s 2.5m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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