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Rule Fog Hunter

Punkaharju - Fog Hunter - Southern Finland

Punkaharju, South Savo, Finland

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread10.0°C
Visibility24134 (Clear)
Relative Humidity49%
Wind Speed5.2m/s (moderate winds)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki
fog weather icon
Next opportunity
Dense Fog
Punkaharju
Mon, May 11 · 18:00–20:00 · 2h window
Medium confidence
49%
🌫️Fog Probability75-100%
Dewpoint Spread: 0.1°C
Visibility: 170 (Dense fog)
Relative Humidity: 99%
Wind Speed: 3.3m/s (calm conditions)
fog weather icon
Dense Fog at Sunset
Punkaharju
Mon, May 11 · 20:00–23:00
🌫️Fog Probability:100%
High
fog weather icon
Moderate Fog
Punkaharju
Mon, May 11 · 23:00–03:00
🌫️Fog Probability:79.2-81.7%
Low
fog weather icon
Moderate Fog at Sunrise
Punkaharju
Tue, May 12 · 03:00–06:00
🌫️Fog Probability:79.2%
Low
fog weather icon
Moderate Fog
Punkaharju
Tue, May 12 · 06:00–07:00
🌫️Fog Probability:79.2%
Low
fog weather icon
Moderate Fog at Sunset
Punkaharju
Tue, May 12 · 20:00–23:00
🌫️Fog Probability:75%
Low
fog weather icon
Moderate Fog
Punkaharju
Tue, May 12 · 23:00–01:00
🌫️Fog Probability:75%
Low

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%
Thu, May 7
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, May 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%
Sat, May 9
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, May 10
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%
Mon, May 11
24:0036%
01:0040%
02:0043%
03:000%
04:0044%
05:0044%
06:0044%
07:000%
08:000%
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
Fri, May 8 Sunrise 04:31 Sunset 21:28
11:00
96% -2.8°C 0mm 49% 0cm 41° 7.2°C 0mm 0.52kPa 24134m 8.4m/s 5.2m/s
12:00
99% -3°C 0mm 47% 0cm 44° 7.7°C 0mm 0.56kPa 24135m 8.2m/s 5m/s
13:00
99% -3.4°C 0mm 44% 0cm 45° 8°C 0mm 0.6kPa 24134m 8.2m/s 5m/s
14:00
99% -4°C 0mm 41% 0cm 44° 8.6°C 0mm 0.66kPa 24134m 8.7m/s 5.2m/s
15:00
99% -4.2°C 0mm 40% 0cm 41° 8.8°C 0mm 0.68kPa 24134m 9.2m/s 5.4m/s
16:00
99% -4°C 0mm 40% 0cm 35° 9°C 0mm 0.69kPa 24134m 8.8m/s 5m/s
17:00
100% -4.6°C 0mm 37% 0cm 29° 9.2°C 0mm 0.73kPa 24135m 8.5m/s 5m/s
18:00
100% -4.6°C 0mm 37% 0cm 22° 9.4°C 0mm 0.74kPa 24135m 8.3m/s 4.9m/s
19:00
100% -4.2°C 0mm 40% 0cm 15° 8.9°C 0mm 0.69kPa 24135m 7.7m/s 4.3m/s
20:00
100% -3.7°C 0mm 44% 0cm 8.3° 7.9°C 0mm 0.6kPa 24135m 4.9m/s 3.1m/s
21:00
100% -3.5°C 0mm 49% 0cm 2.2° 6.5°C 0mm 0.5kPa 24135m 2.4m/s 2.4m/s
22:00 ☾
98% -3.9°C 0mm 50% 0cm -3.3° 5.7°C 0mm 0.45kPa 24135m 2.1m/s 2.1m/s
23:00 ☾
97% -4.1°C 0mm 50% 0cm -7.5° 5.4°C 0mm 0.45kPa 24134m 1.8m/s 1.8m/s
Sat, May 9 Sunrise 04:31 Sunset 21:28
24:00 ☾
95% -4.3°C 0mm 50% 0cm -10° 5.1°C 0mm 0.44kPa 24134m 1.9m/s 1.8m/s
01:00 ☾
96% -4.3°C 0mm 52% 0cm -11° 4.7°C 0mm 0.41kPa 24134m 2.2m/s 2.2m/s
02:00 ☾
97% -4.1°C 0mm 55% 0cm -10° 4.1°C 0mm 0.37kPa 24134m 2.2m/s 2.1m/s
03:00 ☾
98% -3.8°C 0mm 59% 0cm -7.3° 3.4°C 0mm 0.32kPa 24135m 1.7m/s 1.7m/s
04:00 ☾
98% -3.4°C 0mm 62% 0cm -3.1° 3.1°C 0mm 0.29kPa 24134m 1.1m/s 1m/s
05:00
98% -3.5°C 0mm 63% 0cm 2.5° 3°C 0mm 0.28kPa 24134m 1.2m/s 1.2m/s
06:00
98% -3.2°C 0mm 61% 0cm 8.6° 3.7°C 0mm 0.31kPa 24134m 1.6m/s 1.6m/s
07:00
98% -2.8°C 0mm 58% 0cm 15° 4.8°C 0mm 0.36kPa 24134m 2.2m/s 1.7m/s
08:00
97% -2.3°C 0mm 55% 0cm 22° 5.9°C 0mm 0.41kPa 24134m 2.7m/s 2m/s
09:00
97% -2.1°C 0mm 53% 0cm 29° 6.8°C 0mm 0.47kPa 24134m 2.9m/s 2.1m/s
10:00
83% -2.1°C 0mm 50% 0cm 36° 7.8°C 0mm 0.53kPa 24135m 2.8m/s 2m/s
11:00
70% -2.4°C 0mm 46% 0cm 41° 8.5°C 0mm 0.59kPa 24135m 2.4m/s 1.7m/s
12:00
56% -2.3°C 0mm 45% 0cm 44° 9.1°C 0mm 0.64kPa 24135m 2m/s 1.2m/s
13:00
52% -2.2°C 0mm 43% 0cm 46° 9.9°C 0mm 0.7kPa 24135m 1.6m/s 0.6m/s
14:00
47% -2.2°C 0mm 41% 0cm 44° 10°C 0mm 0.74kPa 24134m 1.5m/s 0.51m/s
15:00
43% -2.5°C 0mm 40% 0cm 41° 11°C 0mm 0.77kPa 24135m 1.6m/s 0.92m/s
16:00
34% -2.6°C 0mm 40% 0cm 36° 11°C 0mm 0.77kPa 24134m 1.6m/s 1m/s
17:00
24% -2.5°C 0mm 41% 0cm 29° 10°C 0mm 0.74kPa 24134m 1.2m/s 0.31m/s
18:00
15% -2.3°C 0mm 41% 0cm 22° 10°C 0mm 0.73kPa 24135m 2.2m/s 1.9m/s
19:00
15% -2.1°C 0mm 42% 0cm 15° 10°C 0mm 0.73kPa 24135m 5.7m/s 4.5m/s
20:00
14% -1.9°C 0mm 46% 0cm 8.5° 9°C 0mm 0.61kPa 24134m 8m/s 5m/s
21:00
14% -2.8°C 0mm 48% 0cm 2.4° 7.3°C 0mm 0.53kPa 24135m 7.7m/s 4.4m/s
22:00 ☾
25% -3.1°C 0mm 53% 0cm -3.1° 5.7°C 0mm 0.43kPa 24134m 7.1m/s 3.9m/s
23:00 ☾
35% -3.3°C 0mm 56% 0cm -7.2° 4.9°C 0mm 0.38kPa 24135m 6.3m/s 3.5m/s
Sun, May 10 Sunrise 04:28 Sunset 21:31
24:00 ☾
46% -3.4°C 0mm 56% 0cm -9.8° 4.5°C 0mm 0.37kPa 24135m 6.3m/s 3.5m/s
01:00 ☾
43% -3.6°C 0mm 56% 0cm -11° 4.3°C 0mm 0.36kPa 24135m 5.8m/s 3.3m/s
02:00 ☾
40% -3.7°C 0mm 58% 0cm -9.7° 3.8°C 0mm 0.34kPa 24134m 5.8m/s 3.3m/s
03:00 ☾
37% -3.2°C 0mm 61% 0cm -7.1° 3.5°C 0mm 0.3kPa 24135m 6.4m/s 3.2m/s
04:00 ☾
31% -2.7°C 0mm 64% 0cm -2.8° 3.4°C 0mm 0.28kPa 24134m 5.1m/s 2.9m/s
05:00
25% -2.5°C 0mm 66% 0cm 2.7° 3.2°C 0mm 0.26kPa 24135m 4.1m/s 2.7m/s
06:00
19% -2.1°C 0mm 66% 0cm 8.8° 3.8°C 0mm 0.28kPa 24135m 4.5m/s 2.5m/s
07:00
14% -1.7°C 0mm 63% 0cm 16° 4.8°C 0mm 0.32kPa 24135m 4.6m/s 2.6m/s
08:00
9% -1.5°C 0mm 58% 0cm 23° 6.1°C 0mm 0.39kPa 24135m 4.4m/s 2.7m/s
09:00
4% -1.2°C 0mm 54% 0cm 30° 7.4°C 0mm 0.47kPa 24135m 4.8m/s 3m/s
10:00
3% -0.9°C 0mm 51% 0cm 36° 8.7°C 0mm 0.55kPa 24135m 5.2m/s 3.2m/s
11:00
3% -0.6°C 0mm 48% 0cm 41° 9.8°C 0mm 0.62kPa 24135m 6m/s 3.6m/s
12:00
2% -0.3°C 0mm 48% 0cm 45° 10°C 0mm 0.65kPa 24134m 6.3m/s 3.9m/s
13:00
2% -0.4°C 0mm 47% 0cm 46° 11°C 0mm 0.68kPa 24135m 6.3m/s 4.2m/s
14:00
1% -0.3°C 0mm 44% 0cm 45° 12°C 0mm 0.76kPa 24134m 7.2m/s 5.4m/s
15:00
1% -0.9°C 0mm 42% 0cm 41° 12°C 0mm 0.79kPa 24134m 7.8m/s 6.4m/s
16:00
1% -0.1°C 0mm 50% 0cm 36° 9.8°C 0mm 0.6kPa 24134m 7.2m/s 5.4m/s
17:00
2% 0.4°C 0mm 58% 0cm 29° 8°C 0mm 0.45kPa 24135m 6.5m/s 4.5m/s
18:00
2% 0.5°C 0mm 67% 0cm 23° 6.2°C 0mm 0.32kPa 24135m 5.9m/s 3.6m/s
19:00
1% 1.6°C 0.02mm 71% 0cm 15° 6.4°C 0.02mm 0.28kPa 24135m 7m/s 3.9m/s
20:00
1% 2.6°C 0.05mm 75% 0cm 8.7° 6.7°C 0.04mm 0.24kPa 24135m 8m/s 4.3m/s
21:00
0% 3.6°C 0.07mm 80% 0cm 2.6° 6.9°C 0.06mm 0.2kPa 24135m 9m/s 4.6m/s
22:00 ☾
0% 4°C 0.16mm 85% 0cm -2.8° 6.4°C 0.23mm 0.14kPa 16686m 8.5m/s 4.5m/s
23:00 ☾
0% 4.4°C 0.26mm 90% 0cm -7° 5.8°C 0.4mm 0.09kPa 9236m 8m/s 4.3m/s
Mon, May 11 Sunrise 04:25 Sunset 21:34
24:00 ☾
0% 4.7°C 0.35mm 96% 0cm -9.5° 5.3°C 0.56mm 0.04kPa 1787m 7.5m/s 4.2m/s
01:00 ☾
0% 4.7°C 0.27mm 96% 0cm -10° 5.3°C 0.73mm 0.04kPa 1324m 7m/s 4.1m/s
02:00 ☾
0% 4.7°C 0.19mm 96% 0cm -9.5° 5.3°C 0.9mm 0.04kPa 861m 6.4m/s 3.9m/s
03:00 ☾
0% 4.7°C 0.11mm 96% 0cm -6.8° 5.3°C 1.1mm 0.04kPa 398m 5.8m/s 3.8m/s
04:00 ☾
0% 4.9°C 0.09mm 96% 0cm -2.6° 5.5°C 0.83mm 0.04kPa 405m 5.8m/s 3.7m/s
05:00
0% 5.1°C 0.06mm 96% 0cm 2.9° 5.7°C 0.6mm 0.04kPa 413m 5.9m/s 3.6m/s
06:00
0% 5.3°C 0.04mm 96% 0cm 9.1° 5.9°C 0.38mm 0.04kPa 421m 5.9m/s 3.5m/s
07:00
0% 5.3°C 0.06mm 92% 0cm 16° 6.5°C 0.46mm 0.08kPa 8198m 5.3m/s 3.3m/s
08:00
0% 5.3°C 0.07mm 88% 0cm 23° 7.1°C 0.54mm 0.12kPa 15974m 4.7m/s 3.1m/s
09:00
0% 5.2°C 0.09mm 84% 0cm 30° 7.8°C 0.63mm 0.17kPa 23751m 4.2m/s 2.8m/s
10:00
1% 5.4°C 0.07mm 84% 0cm 36° 7.8°C 0.48mm 0.16kPa 16201m 4.7m/s 3.2m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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