Skip to content
✨ New: PhotoWeather is now available on iOS and Android
PhotoWeather
Get started
More Fog Hunter in Southern Finland
Create your own alerts
Rule Fog Hunter

Porvoo - Fog Hunter - Southern Finland

Porvoo, 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

Get notified
Free alerts · takes 30 seconds
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 Spread10.7°C
Visibility24134 (Clear)
Relative Humidity47%
Wind Speed1.6m/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.

Create your own Fog Hunter alerts

Get notified when these conditions match at your own locations.

Get this template

72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 86 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%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
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
Tue, Apr 21 Sunrise 05:42 Sunset 20:51
22:00 ☾
56% -2.6°C 0mm 47% 0cm -7.7° 8.1°C 0mm 0.58kPa 24134m 1.6m/s 1.6m/s
23:00 ☾
61% -2.6°C 0mm 48% 0cm -13° 7.7°C 0mm 0.54kPa 24134m 1.6m/s 1.6m/s
Wed, Apr 22 Sunrise 05:42 Sunset 20:51
24:00 ☾
66% -2.5°C 0mm 50% 0cm -16° 7.3°C 0mm 0.51kPa 24134m 1.8m/s 1.8m/s
01:00 ☾
67% -2.4°C 0mm 52% 0cm -17° 6.7°C 0mm 0.46kPa 24134m 1.9m/s 2m/s
02:00 ☾
67% -2.1°C 0mm 56% 0cm -17° 6.1°C 0mm 0.42kPa 24135m 3.3m/s 2.2m/s
03:00 ☾
68% -0.8°C 0mm 63% 0cm -15° 5.7°C 0mm 0.34kPa 24134m 4.7m/s 2.3m/s
04:00 ☾
77% 0.2°C 0mm 69% 0cm -10° 5.4°C 0mm 0.27kPa 24135m 7.1m/s 2.4m/s
05:00 ☾
87% 0.2°C 0mm 71% 0cm -4.9° 4.9°C 0mm 0.25kPa 24134m 8.5m/s 2.4m/s
06:00
96% -0.1°C 0mm 72% 0cm 1.8° 4.4°C 0mm 0.23kPa 24135m 8.3m/s 2.4m/s
07:00
82% -0.5°C 0mm 64% 0cm 8.7° 5.7°C 0mm 0.33kPa 24134m 9.9m/s 2.8m/s
08:00
68% -0.3°C 0mm 55% 0cm 16° 8.1°C 0mm 0.48kPa 24135m 11m/s 3.6m/s
09:00
54% -0.2°C 0mm 51% 0cm 23° 9.5°C 0mm 0.58kPa 24134m 11m/s 4.4m/s
10:00
36% -0.7°C 0mm 48% 0cm 30° 9.8°C 0mm 0.63kPa 24134m 11m/s 4.8m/s
11:00
18% -1°C 0mm 47% 0cm 36° 9.7°C 0mm 0.63kPa 24134m 8.7m/s 4.7m/s
12:00
0% -1.3°C 0mm 45% 0cm 40° 10°C 0mm 0.68kPa 24135m 8.3m/s 5m/s
13:00
0% -1.3°C 0mm 41% 0cm 42° 11°C 0mm 0.79kPa 24134m 8.8m/s 5.6m/s
14:00
0% -1.3°C 0mm 39% 0cm 41° 12°C 0mm 0.86kPa 24134m 9.5m/s 5.9m/s
15:00
0% -1°C 0mm 37% 0cm 38° 13°C 0mm 0.96kPa 24135m 10m/s 6.2m/s
16:00
1% -1.2°C 0mm 36% 0cm 33° 14°C 0mm 1kPa 24135m 9.8m/s 6.4m/s
17:00
3% -0.9°C 0mm 37% 0cm 27° 14°C 0mm 0.99kPa 24135m 10m/s 5.8m/s
18:00
4% -0.2°C 0mm 42% 0cm 20° 12°C 0mm 0.81kPa 24135m 11m/s 5.4m/s
19:00
3% 1.2°C 0mm 52% 0cm 13° 11°C 0.06mm 0.62kPa 24135m 11m/s 5.6m/s
20:00
3% 1°C 0mm 55% 0cm 5.5° 9.6°C 0.19mm 0.54kPa 18134m 12m/s 5.6m/s
21:00 ☾
2% 0.3°C 0mm 57% 0cm -1.2° 8.3°C 0.25mm 0.47kPa 24134m 14m/s 6m/s
22:00 ☾
28% -3.1°C 0mm 48% 0cm -7.4° 7.3°C 0mm 0.54kPa 24134m 15m/s 7m/s
23:00 ☾
55% -5.8°C 0mm 42% 0cm -12° 6.1°C 0mm 0.54kPa 24134m 17m/s 6.9m/s
Thu, Apr 23 Sunrise 05:39 Sunset 20:53
24:00 ☾
81% -6.3°C 0mm 46% 0cm -16° 4.4°C 0mm 0.45kPa 24135m 12m/s 6.6m/s
01:00 ☾
84% -9°C 0mm 42% 0cm -17° 2.5°C 0mm 0.42kPa 24135m 11m/s 6m/s
02:00 ☾
87% -9.9°C 0mm 42% 0cm -17° 1.6°C 0mm 0.4kPa 24135m 12m/s 5.7m/s
03:00 ☾
90% -9.6°C 0mm 45% 0cm -14° 1°C 0mm 0.36kPa 24134m 12m/s 5.8m/s
04:00 ☾
90% -9.2°C 0mm 48% 0cm -10° 0.59°C 0mm 0.33kPa 24135m 12m/s 5.8m/s
05:00 ☾
90% -8.8°C 0mm 51% 0cm -4.6° 0.15°C 0mm 0.3kPa 24135m 12m/s 5.6m/s
06:00
90% -8.5°C 0mm 54% 0cm 2.1° -0.2°C 0mm 0.28kPa 24135m 12m/s 5.7m/s
07:00
89% -8.4°C 0mm 53% 0cm 9° 0.01°C 0mm 0.29kPa 24135m 12m/s 5.7m/s
08:00
89% -8.2°C 0mm 51% 0cm 16° 0.83°C 0mm 0.32kPa 24135m 12m/s 5.7m/s
09:00
88% -8.4°C 0mm 47% 0cm 24° 1.7°C 0mm 0.37kPa 24135m 12m/s 6m/s
10:00
81% -9.1°C 0mm 41% 0cm 30° 2.9°C 0mm 0.44kPa 24135m 10m/s 6.2m/s
11:00
75% -9.3°C 0mm 37% 0cm 36° 4°C 0mm 0.51kPa 24134m 9.8m/s 6m/s
12:00
68% -9.4°C 0mm 34% 0cm 40° 5.3°C 0mm 0.59kPa 24135m 9.9m/s 6m/s
13:00
60% -9.1°C 0mm 32% 0cm 42° 6.4°C 0mm 0.65kPa 24135m 9.8m/s 6m/s
14:00
53% -8.3°C 0mm 32% 0cm 42° 7.2°C 0mm 0.69kPa 24135m 10m/s 6.2m/s
15:00
45% -7.9°C 0mm 32% 0cm 39° 7.8°C 0mm 0.72kPa 24134m 11m/s 6.7m/s
16:00
36% -7.7°C 0mm 32% 0cm 34° 8.2°C 0mm 0.75kPa 24135m 11m/s 6.3m/s
17:00
28% -7°C 0mm 32% 0cm 27° 8.6°C 0mm 0.75kPa 24135m 12m/s 5.6m/s
18:00
19% -5.7°C 0mm 36% 0cm 20° 8.6°C 0mm 0.71kPa 24134m 11m/s 5m/s
19:00
15% -5.2°C 0mm 39% 0cm 13° 8°C 0mm 0.66kPa 24135m 11m/s 4.5m/s
20:00
12% -4.5°C 0mm 43% 0cm 5.8° 7.1°C 0mm 0.57kPa 24134m 10m/s 4.4m/s
21:00 ☾
8% -4.3°C 0mm 47% 0cm -0.9° 6.1°C 0mm 0.5kPa 24134m 8.8m/s 3.9m/s
22:00 ☾
8% -4°C 0mm 50% 0cm -7.1° 5.6°C 0mm 0.45kPa 24134m 8.9m/s 3.8m/s
23:00 ☾
9% -3.6°C 0mm 54% 0cm -12° 5°C 0mm 0.4kPa 24134m 8.8m/s 3.4m/s
Fri, Apr 24 Sunrise 05:36 Sunset 20:56
24:00 ☾
9% -3.3°C 0mm 58% 0cm -15° 4.3°C 0mm 0.35kPa 24134m 8.7m/s 3.2m/s
01:00 ☾
9% -3.2°C 0mm 62% 0cm -17° 3.5°C 0mm 0.3kPa 24135m 8.6m/s 2.9m/s
02:00 ☾
9% -3.2°C 0mm 66% 0cm -16° 2.6°C 0mm 0.25kPa 24135m 9.2m/s 2.8m/s
03:00 ☾
9% -3°C 0mm 69% 0cm -14° 2.1°C 0mm 0.22kPa 24135m 9.7m/s 2.9m/s
04:00 ☾
18% -3.3°C 0mm 57% 0cm -9.8° 4.4°C 0mm 0.36kPa 24135m 8.1m/s 3m/s
05:00 ☾
27% -4.2°C 0mm 46% 0cm -4.3° 6.7°C 0mm 0.53kPa 24135m 6.4m/s 3.2m/s
06:00
36% -6°C 0mm 34% 0cm 2.4° 9°C 0mm 0.76kPa 24135m 4.8m/s 3.3m/s
07:00
38% -6.1°C 0mm 32% 0cm 9.3° 9.7°C 0mm 0.81kPa 24135m 4.5m/s 3.2m/s
08:00
39% -6.3°C 0mm 30% 0cm 17° 10°C 0mm 0.87kPa 24135m 4.1m/s 3.1m/s
09:00
41% -6.6°C 0mm 28% 0cm 24° 11°C 0mm 0.94kPa 24135m 3.7m/s 3.1m/s
10:00
48% -6.6°C 0mm 28% 0cm 31° 11°C 0mm 0.94kPa 24135m 3.6m/s 3m/s
11:00
56% -6.7°C 0mm 28% 0cm 36° 11°C 0mm 0.93kPa 24135m 3.4m/s 2.9m/s
12:00
63% -6.7°C 0mm 28% 0cm 41° 11°C 0mm 0.93kPa 24135m 3.3m/s 2.8m/s
13:00
60% -5.9°C 0mm 34% 0cm 42° 9.2°C 0mm 0.77kPa 24135m 2.6m/s 2.3m/s
14:00
56% -5.3°C 0mm 39% 0cm 42° 7.6°C 0mm 0.64kPa 24135m 2m/s 1.8m/s
15:00
53% -5.1°C 0mm 45% 0cm 39° 6.1°C 0mm 0.52kPa 24135m 1.3m/s 1.3m/s
16:00
47% -4.2°C 0mm 50% 0cm 34° 5.4°C 0mm 0.45kPa 24135m 1.5m/s 1.5m/s
17:00
40% -3.5°C 0mm 55% 0cm 28° 4.8°C 0mm 0.38kPa 24135m 1.7m/s 1.6m/s
18:00
34% -2.9°C 0mm 60% 0cm 21° 4.1°C 0mm 0.32kPa 24135m 1.8m/s 1.8m/s
19:00
31% -2.7°C 0mm 62% 0cm 13° 4°C 0mm 0.31kPa 24135m 2.2m/s 1.8m/s
20:00
27% -2.6°C 0mm 63% 0cm 6.1° 3.9°C 0mm 0.3kPa 24135m 2.6m/s 1.8m/s
21:00 ☾
24% -2.4°C 0mm 64% 0cm -0.54° 3.7°C 0mm 0.29kPa 24135m 3m/s 1.8m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

Get Notified of Opportunities

Create your own custom alerts for this location and more.

Create Free Account