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Rule Fog Hunter

Helsinki - Fog Hunter - Southern Finland

Helsingfors, Uusimaa, 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 Spread11.0°C
Visibility24135 (Clear)
Relative Humidity49%
Wind Speed6.9m/s (moderate winds)

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%
Sat, May 23
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Sun, May 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%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Mon, May 25
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, May 26
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%
Wed, May 27
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%
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
Sun, May 24 Sunrise 04:22 Sunset 22:13
16:00
65% 7.1°C 0mm 49% 0cm 41° 18°C 0mm 1.1kPa 24135m 12m/s 6.9m/s
17:00
63% 7.1°C 0mm 48% 0cm 35° 18°C 0mm 1.1kPa 24135m 12m/s 6.4m/s
18:00
60% 7.5°C 0mm 51% 0cm 28° 18°C 0mm 0.99kPa 24134m 12m/s 6m/s
19:00
60% 7.5°C 0mm 55% 0cm 20° 17°C 0mm 0.86kPa 24134m 13m/s 5.8m/s
20:00
61% 7.3°C 0mm 58% 0cm 13° 16°C 0mm 0.75kPa 24134m 13m/s 5.7m/s
21:00
61% 7.2°C 0mm 61% 0cm 6.3° 15°C 0mm 0.65kPa 24134m 12m/s 5.4m/s
22:00
53% 6.5°C 0mm 62% 0cm 0.78° 14°C 0mm 0.6kPa 24135m 13m/s 5.8m/s
23:00 ☾
45% 6.6°C 0mm 66% 0cm -4.2° 13°C 0mm 0.51kPa 24134m 13m/s 5.7m/s
Mon, May 25 Sunrise 04:22 Sunset 22:13
24:00 ☾
37% 6.4°C 0mm 68% 0cm -7.4° 12°C 0mm 0.46kPa 24135m 13m/s 5.7m/s
01:00 ☾
25% 5.7°C 0mm 63% 0cm -8.8° 13°C 0mm 0.53kPa 24134m 15m/s 5.7m/s
02:00 ☾
13% 5.5°C 0mm 63% 0cm -8.4° 12°C 0mm 0.53kPa 24135m 12m/s 5m/s
03:00 ☾
1% 6.1°C 0mm 68% 0cm -6.2° 12°C 0mm 0.45kPa 24135m 13m/s 5.4m/s
04:00 ☾
1% 6°C 0mm 66% 0cm -2.3° 12°C 0mm 0.47kPa 24135m 13m/s 5.3m/s
05:00
0% 6.1°C 0mm 68% 0cm 3° 12°C 0mm 0.44kPa 24135m 13m/s 4.3m/s
06:00
0% 5.7°C 0mm 66% 0cm 9.1° 12°C 0mm 0.47kPa 24135m 12m/s 4.5m/s
07:00
0% 5.1°C 0.01mm 66% 0cm 16° 11°C 0.06mm 0.44kPa 24134m 12m/s 4.6m/s
08:00
1% 4.8°C 0.02mm 69% 0cm 23° 10°C 0.06mm 0.38kPa 24134m 12m/s 4.8m/s
09:00
1% 3.9°C 0mm 65% 0cm 31° 10°C 0.06mm 0.43kPa 24134m 11m/s 4.7m/s
10:00
7% 2.6°C 0mm 49% 0cm 38° 13°C 0mm 0.77kPa 24135m 11m/s 5.9m/s
11:00
12% 1.7°C 0mm 43% 0cm 44° 14°C 0mm 0.9kPa 24134m 11m/s 6.3m/s
12:00
18% 0.8°C 0mm 38% 0cm 49° 15°C 0mm 1.1kPa 24135m 11m/s 6.4m/s
13:00
17% 0°C 0mm 34% 0cm 51° 16°C 0mm 1.2kPa 24135m 13m/s 6.7m/s
14:00
17% -0.6°C 0mm 32% 0cm 50° 16°C 0mm 1.3kPa 24134m 13m/s 7.1m/s
15:00
16% -0.5°C 0mm 31% 0cm 47° 17°C 0mm 1.3kPa 24135m 14m/s 7.3m/s
16:00
29% 0.2°C 0mm 32% 0cm 42° 17°C 0mm 1.3kPa 24134m 14m/s 7m/s
17:00
42% 0.9°C 0mm 34% 0cm 35° 17°C 0mm 1.3kPa 24134m 14m/s 6.7m/s
18:00
55% 1.5°C 0mm 37% 0cm 28° 16°C 0mm 1.2kPa 24134m 15m/s 6.7m/s
19:00
59% 2°C 0mm 41% 0cm 20° 15°C 0mm 1kPa 24134m 14m/s 6.2m/s
20:00
62% 2.4°C 0mm 45% 0cm 13° 14°C 0mm 0.87kPa 24135m 12m/s 6.1m/s
21:00
66% 2.4°C 0mm 49% 0cm 6.5° 13°C 0mm 0.75kPa 24134m 12m/s 5.7m/s
22:00
64% 2.1°C 0mm 52% 0cm 0.93° 12°C 0mm 0.65kPa 24135m 11m/s 4.8m/s
23:00 ☾
61% 2.5°C 0mm 56% 0cm -4° 11°C 0mm 0.57kPa 24134m 12m/s 4.9m/s
Tue, May 26 Sunrise 04:20 Sunset 22:15
24:00 ☾
59% 2.8°C 0mm 60% 0cm -7.2° 10°C 0mm 0.5kPa 24135m 13m/s 5.6m/s
01:00 ☾
51% 3.1°C 0mm 65% 0cm -8.6° 9.4°C 0mm 0.42kPa 24134m 12m/s 4.8m/s
02:00 ☾
43% 3.2°C 0mm 67% 0cm -8.2° 9.1°C 0mm 0.38kPa 24134m 13m/s 4.9m/s
03:00 ☾
35% 3.2°C 0mm 69% 0cm -6° 8.4°C 0mm 0.34kPa 24135m 12m/s 4.7m/s
04:00 ☾
35% 3.2°C 0mm 72% 0cm -2.1° 8°C 0mm 0.3kPa 24134m 13m/s 4.7m/s
05:00
34% 3.3°C 0mm 74% 0cm 3.1° 7.7°C 0mm 0.28kPa 24135m 12m/s 4.4m/s
06:00
34% 3.6°C 0mm 73% 0cm 9.2° 8.2°C 0mm 0.3kPa 24134m 11m/s 4.2m/s
07:00
36% 4.1°C 0mm 68% 0cm 16° 9.7°C 0mm 0.38kPa 24134m 11m/s 4.4m/s
08:00
37% 4°C 0mm 60% 0cm 24° 12°C 0mm 0.54kPa 24134m 9.5m/s 4.8m/s
09:00
39% 3.5°C 0mm 52% 0cm 31° 13°C 0mm 0.73kPa 24135m 8.3m/s 4.9m/s
10:00
48% 3.2°C 0mm 46% 0cm 38° 15°C 0mm 0.88kPa 24134m 8.7m/s 5.2m/s
11:00
58% 3.3°C 0mm 44% 0cm 44° 15°C 0mm 0.96kPa 24135m 8.3m/s 5.3m/s
12:00
67% 3°C 0mm 41% 0cm 49° 16°C 0mm 1.1kPa 24134m 8.3m/s 4.9m/s
13:00
62% 3.3°C 0mm 43% 0cm 51° 16°C 0mm 1kPa 24135m 8.9m/s 4.8m/s
14:00
57% 3.5°C 0mm 46% 0cm 50° 15°C 0mm 0.91kPa 24134m 9.2m/s 4m/s
15:00
52% 2.6°C 0mm 40% 0cm 47° 16°C 0mm 1.1kPa 24134m 9.7m/s 4.4m/s
16:00
46% 1°C 0mm 33% 0cm 42° 18°C 0mm 1.4kPa 24134m 10m/s 6m/s
17:00
40% 0.9°C 0mm 33% 0cm 35° 17°C 0mm 1.3kPa 24135m 9.2m/s 6.2m/s
18:00
34% 2.1°C 0mm 37% 0cm 28° 17°C 0mm 1.2kPa 24135m 8.7m/s 5.8m/s
19:00
32% 2.9°C 0mm 43% 0cm 20° 16°C 0mm 1kPa 24134m 8.1m/s 4.9m/s
20:00
30% 3.8°C 0mm 49% 0cm 13° 14°C 0mm 0.84kPa 24135m 8.5m/s 5.6m/s
21:00
28% 3.7°C 0mm 54% 0cm 6.6° 13°C 0mm 0.68kPa 24134m 9.7m/s 5m/s
22:00
26% 4.6°C 0.02mm 64% 0cm 1.1° 11°C 0mm 0.49kPa 24134m 11m/s 6.4m/s
23:00 ☾
25% 5.1°C 0.04mm 73% 0cm -3.9° 9.6°C 0mm 0.32kPa 24135m 11m/s 7.7m/s
Wed, May 27 Sunrise 04:18 Sunset 22:17
24:00 ☾
23% 5.3°C 0.06mm 83% 0cm -7° 8.1°C 0mm 0.19kPa 24135m 12m/s 9.1m/s
01:00 ☾
18% 5.4°C 0.05mm 82% 0cm -8.5° 8.4°C 0.13mm 0.2kPa 24135m 12m/s 8.6m/s
02:00 ☾
14% 5.6°C 0.03mm 81% 0cm -8.1° 8.7°C 0.25mm 0.22kPa 24135m 11m/s 8.1m/s
03:00 ☾
9% 5.7°C 0.02mm 80% 0cm -5.9° 9.1°C 0.38mm 0.23kPa 24135m 10m/s 7.6m/s
04:00 ☾
14% 5.1°C 0.01mm 74% 0cm -2° 9.5°C 0.29mm 0.31kPa 24135m 8.9m/s 6.7m/s
05:00
18% 4.4°C 0.007mm 69% 0cm 3.3° 9.9°C 0.21mm 0.38kPa 24135m 7.5m/s 5.9m/s
06:00
23% 3.7°C 0mm 63% 0cm 9.4° 10°C 0.13mm 0.46kPa 24135m 6m/s 5m/s
07:00
20% 3.2°C 0mm 60% 0cm 16° 11°C 0.13mm 0.52kPa 24135m 6.9m/s 5.5m/s
08:00
18% 2.7°C 0mm 56% 0cm 24° 11°C 0.13mm 0.57kPa 24135m 7.8m/s 6m/s
09:00
15% 2.1°C 0mm 53% 0cm 31° 11°C 0.13mm 0.63kPa 24135m 8.6m/s 6.5m/s
10:00
16% 1.9°C 0mm 52% 0cm 38° 12°C 0.08mm 0.66kPa 24135m 9.8m/s 7.4m/s
11:00
18% 1.8°C 0mm 50% 0cm 44° 12°C 0.04mm 0.69kPa 24135m 11m/s 8.3m/s
12:00
19% 1.6°C 0mm 48% 0cm 49° 12°C 0mm 0.73kPa 24135m 12m/s 9.3m/s
13:00
14% 1.2°C 0mm 49% 0cm 51° 12°C 0mm 0.7kPa 24135m 13m/s 9.6m/s
14:00
9% 0.9°C 0mm 49% 0cm 50° 11°C 0mm 0.68kPa 24135m 13m/s 9.9m/s
15:00
4% 0.6°C 0mm 50% 0cm 47° 11°C 0mm 0.65kPa 24135m 14m/s 10m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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