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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 Spread3.4°C
Visibility24021 (Clear)
Relative Humidity80%
Wind Speed1.7m/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 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Helsinki
Fog Probability
≥ 75.0%
Tue, Jul 7
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Wed, Jul 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%
Thu, Jul 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%
Fri, Jul 10
24:000%
01:000%
02:000%
03:000%
04:0055%
05:0055%
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, Jul 11
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%
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, Jul 8 Sunrise 04:10 Sunset 22:39
17:00
0% 12°C 0.02mm 80% 0cm 37° 15°C 0.38mm 0.34kPa 24021m 3.1m/s 1.7m/s
18:00
0% 13°C 0mm 86% 0cm 30° 15°C 0.44mm 0.25kPa 24135m 5.3m/s 3m/s
19:00
0% 12°C 0mm 82% 0cm 22° 15°C 0.44mm 0.31kPa 24135m 8.3m/s 4m/s
20:00
0% 11°C 0.13mm 80% 0cm 15° 15°C 0.5mm 0.32kPa 23878m 8.7m/s 3.6m/s
21:00
0% 11°C 0.07mm 86% 0cm 8.5° 13°C 0.69mm 0.21kPa 24134m 6.3m/s 2.5m/s
22:00
0% 11°C 0mm 86% 0cm 2.7° 13°C 0mm 0.21kPa 24134m 8.4m/s 3.5m/s
23:00 ☾
0% 11°C 0mm 85% 0cm -2.1° 13°C 0mm 0.23kPa 24134m 11m/s 3.9m/s
Thu, Jul 9 Sunrise 04:10 Sunset 22:39
24:00 ☾
0% 10°C 0mm 81% 0cm -5.6° 13°C 0mm 0.3kPa 24135m 12m/s 4.4m/s
01:00 ☾
0% 9.8°C 0mm 77% 0cm -7.2° 14°C 0mm 0.36kPa 24134m 13m/s 4.7m/s
02:00 ☾
0% 9.6°C 0mm 76% 0cm -7.1° 14°C 0mm 0.39kPa 24134m 13m/s 5.3m/s
03:00 ☾
0% 10°C 0.16mm 81% 0cm -5.2° 13°C 0.06mm 0.28kPa 24135m 13m/s 5.1m/s
04:00 ☾
1% 10°C 0.52mm 88% 0cm -1.5° 12°C 0.38mm 0.16kPa 17365m 15m/s 5.7m/s
05:00
2% 11°C 0.43mm 91% 0cm 3.5° 12°C 0.81mm 0.13kPa 18158m 15m/s 6.3m/s
06:00
3% 11°C 0.04mm 92% 0cm 9.4° 12°C 1.2mm 0.12kPa 24134m 15m/s 6.3m/s
07:00
3% 11°C 0.81mm 93% 0cm 16° 12°C 1.4mm 0.1kPa 12810m 15m/s 6.7m/s
08:00
2% 11°C 0.99mm 95% 0cm 24° 12°C 2.6mm 0.08kPa 11952m 16m/s 7.3m/s
09:00
2% 11°C 2.3mm 96% 0cm 31° 12°C 4mm 0.06kPa 6841m 15m/s 7.2m/s
10:00
5% 12°C 0.11mm 96% 0cm 38° 12°C 1.1mm 0.06kPa 24135m 13m/s 6.5m/s
11:00
9% 12°C 0.07mm 95% 0cm 44° 13°C 1.1mm 0.07kPa 24134m 12m/s 5.6m/s
12:00
12% 12°C 0.35mm 97% 0cm 49° 12°C 1.4mm 0.05kPa 22749m 11m/s 4.9m/s
13:00
14% 12°C 0.07mm 97% 0cm 52° 13°C 1.6mm 0.04kPa 24134m 11m/s 4.5m/s
14:00
16% 13°C 0.01mm 97% 0cm 52° 13°C 1.7mm 0.04kPa 24135m 9.8m/s 4.5m/s
15:00
18% 13°C 0mm 96% 0cm 49° 14°C 1.7mm 0.06kPa 24135m 9.3m/s 4.6m/s
16:00
27% 13°C 0mm 94% 0cm 44° 14°C 0mm 0.1kPa 24134m 7.3m/s 4.2m/s
17:00
35% 14°C 0mm 87% 0cm 37° 16°C 0mm 0.24kPa 24135m 5.8m/s 3.6m/s
18:00
44% 13°C 0mm 76% 0cm 30° 17°C 0.06mm 0.48kPa 24135m 5.2m/s 2.9m/s
19:00
47% 12°C 0mm 67% 0cm 22° 18°C 0.06mm 0.7kPa 24134m 5.1m/s 2.8m/s
20:00
50% 13°C 0mm 75% 0cm 15° 17°C 0.13mm 0.49kPa 23828m 4.6m/s 2m/s
21:00
53% 13°C 0mm 84% 0cm 8.4° 16°C 0.19mm 0.3kPa 24135m 3.4m/s 1.8m/s
22:00
62% 13°C 0mm 89% 0cm 2.7° 14°C 0mm 0.18kPa 24134m 2.9m/s 2.3m/s
23:00 ☾
72% 12°C 0mm 90% 0cm -2.3° 13°C 0mm 0.16kPa 24135m 2.9m/s 2.3m/s
Fri, Jul 10 Sunrise 04:11 Sunset 22:38
24:00 ☾
81% 11°C 0mm 90% 0cm -5.7° 13°C 0mm 0.15kPa 24135m 3.9m/s 2.5m/s
01:00 ☾
80% 11°C 0mm 90% 0cm -7.4° 12°C 0mm 0.14kPa 24135m 5.2m/s 2.6m/s
02:00 ☾
78% 11°C 0mm 92% 0cm -7.2° 12°C 0mm 0.11kPa 24135m 5.2m/s 2.7m/s
03:00 ☾
77% 11°C 0mm 94% 0cm -5.3° 12°C 0mm 0.07kPa 24135m 4.7m/s 2.7m/s
04:00 ☾
67% 11°C 0mm 96% 0cm -1.6° 11°C 0mm 0.06kPa 24135m 3.9m/s 2.5m/s
05:00
56% 11°C 0mm 96% 0cm 3.4° 11°C 0mm 0.06kPa 24135m 4.2m/s 2.4m/s
06:00
46% 11°C 0mm 93% 0cm 9.3° 13°C 0mm 0.1kPa 24134m 4.6m/s 2.3m/s
07:00
43% 12°C 0mm 88% 0cm 16° 14°C 0mm 0.19kPa 24135m 4.7m/s 2.3m/s
08:00
41% 13°C 0mm 80% 0cm 23° 16°C 0mm 0.36kPa 24134m 5m/s 2.7m/s
09:00
38% 12°C 0mm 71% 0cm 31° 17°C 0mm 0.57kPa 24135m 4.7m/s 3.1m/s
10:00
44% 12°C 0mm 63% 0cm 38° 19°C 0mm 0.79kPa 24134m 5.2m/s 3.7m/s
11:00
51% 11°C 0mm 59% 0cm 44° 19°C 0mm 0.91kPa 24134m 5.2m/s 3.9m/s
12:00
57% 11°C 0mm 58% 0cm 49° 20°C 0mm 0.97kPa 24135m 5.6m/s 4.5m/s
13:00
56% 11°C 0mm 57% 0cm 52° 20°C 0mm 0.98kPa 24134m 5.6m/s 4.5m/s
14:00
55% 11°C 0mm 56% 0cm 52° 20°C 0mm 1kPa 24134m 5.6m/s 4.2m/s
15:00
54% 11°C 0mm 56% 0cm 49° 20°C 0mm 1kPa 24134m 5.8m/s 4.3m/s
16:00
54% 11°C 0mm 55% 0cm 43° 20°C 0mm 1.1kPa 24135m 6.3m/s 4.3m/s
17:00
53% 11°C 0mm 54% 0cm 37° 20°C 0mm 1.1kPa 24134m 5.7m/s 3.7m/s
18:00
53% 11°C 0mm 53% 0cm 30° 21°C 0mm 1.1kPa 24134m 5.5m/s 3.6m/s
19:00
48% 11°C 0mm 56% 0cm 22° 20°C 0mm 1kPa 24135m 4.6m/s 2.9m/s
20:00
42% 13°C 0mm 66% 0cm 15° 19°C 0mm 0.74kPa 24135m 4m/s 1.9m/s
21:00
37% 13°C 0mm 73% 0cm 8.3° 17°C 0mm 0.54kPa 24135m 1.5m/s 1.5m/s
22:00
31% 13°C 0.02mm 80% 0cm 2.6° 17°C 0.46mm 0.39kPa 24135m 3.3m/s 2.9m/s
23:00 ☾
26% 14°C 0.05mm 86% 0cm -2.4° 16°C 0.92mm 0.26kPa 24135m 5.2m/s 4.2m/s
Sat, Jul 11 Sunrise 04:13 Sunset 22:36
24:00 ☾
20% 15°C 0.07mm 93% 0cm -5.8° 16°C 1.4mm 0.13kPa 24135m 7m/s 5.6m/s
01:00 ☾
18% 15°C 0.05mm 92% 0cm -7.5° 16°C 1.4mm 0.15kPa 24135m 7m/s 5.5m/s
02:00 ☾
15% 15°C 0.02mm 91% 0cm -7.4° 16°C 1.4mm 0.16kPa 24135m 6.9m/s 5.4m/s
03:00 ☾
13% 15°C 0mm 90% 0cm -5.4° 16°C 1.4mm 0.18kPa 24135m 6.8m/s 5.3m/s
04:00 ☾
11% 15°C 0mm 90% 0cm -1.8° 16°C 0.96mm 0.19kPa 24135m 6.6m/s 5.2m/s
05:00
8% 15°C 0mm 89% 0cm 3.3° 16°C 0.48mm 0.2kPa 24135m 6.3m/s 5.1m/s
06:00
6% 15°C 0mm 89% 0cm 9.2° 16°C 0mm 0.21kPa 24135m 6m/s 5m/s
07:00
5% 15°C 0.05mm 89% 0cm 16° 16°C 0.06mm 0.21kPa 23913m 5.3m/s 4.4m/s
08:00
5% 15°C 0.11mm 89% 0cm 23° 16°C 0.13mm 0.2kPa 23691m 4.5m/s 3.7m/s
09:00
4% 15°C 0.16mm 90% 0cm 31° 17°C 0.19mm 0.19kPa 23468m 3.7m/s 3.1m/s
10:00
5% 15°C 0.11mm 89% 0cm 38° 17°C 0.17mm 0.22kPa 23690m 2.9m/s 2.5m/s
11:00
5% 15°C 0.05mm 88% 0cm 44° 17°C 0.15mm 0.24kPa 23913m 2.1m/s 1.8m/s
12:00
6% 15°C 0mm 86% 0cm 49° 18°C 0.13mm 0.27kPa 24135m 1.2m/s 1.2m/s
13:00
6% 16°C 0mm 87% 0cm 52° 18°C 0.13mm 0.26kPa 24135m 0.96m/s 0.9m/s
14:00
7% 16°C 0mm 88% 0cm 51° 18°C 0.13mm 0.25kPa 24135m 0.7m/s 0.63m/s
15:00
7% 16°C 0mm 88% 0cm 48° 18°C 0.13mm 0.24kPa 24135m 0.44m/s 0.37m/s
16:00
10% 16°C 0mm 88% 0cm 43° 18°C 0.08mm 0.23kPa 24135m 0.53m/s 0.46m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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