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Rule Fog Hunter

Lake Bohinj - Fog Hunter - Slovenian Alps

Bohinjska Bistrica, Bohinj Municipality, Slovenia

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Dewpoint Spread3.6°C
Visibility24135 (Clear)
Relative Humidity77%
Wind Speed1.4m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Ljubljana
fog weather icon
Next opportunity
Moderate Fog at Dawn
Lake Bohinj
Sat, Apr 11 · 05:00–06:00 · 1h window
Low confidence
37%
🌫️Fog Probability60.1%
Dewpoint Spread: 0.7°C
Visibility: 3547 (Mist/Haze)
Relative Humidity: 95%
Wind Speed: 1.7m/s (calm conditions)
fog weather icon
Moderate Fog
Lake Bohinj
Wed, Apr 15 · 16:00–19:00
🌫️Fog Probability:75.8-80.1%
Medium
fog weather icon
Dense Fog at Sunset
Lake Bohinj
Wed, Apr 15 · 19:00–21:00
🌫️Fog Probability:91.1%
High
fog weather icon
Dense Fog
Lake Bohinj
Wed, Apr 15 · 21:00–24:00
🌫️Fog Probability:79.7-91.1%
High

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the atmospheric conditions that create Slovenia's most iconic photography. We combine fog probability, dewpoint spread, and visibility data to predict when mist transforms these fairy-tale landscapes.

Lake Bled with its island church is one of Europe's most photographed scenes, but morning fog can elevate it to truly magical. The Julian Alps offer dramatic peaks rising above emerald lakes and valleys, with conditions that can transform overnight.

What makes the Slovenian Alps special for photography:

  • Lake fog - Bled and Bohinj produce reliable morning mist that frames the dramatic scenery
  • Fairy-tale compositions - Island churches, medieval castles, and Alpine villages
  • Emerald waters - Glacially-fed lakes with distinctive turquoise color
  • Compact geography - Multiple iconic locations within short distances

Peak fog season runs from late August through October. Arrive well before dawn for the best mist at Lake Bled—conditions can change rapidly as the sun warms the valley. Higher viewpoints like Ojstrica or Mala Osojnica offer shots looking down at fog-shrouded lakes.

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72-hour requirements breakdown

What passed or failed, hour by hour
1matching hours in the next 92 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Ljubljana
Fog Probability
≥ 60.0%
Wed, Apr 8
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
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16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Thu, Apr 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, Apr 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%
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13:000%
14:000%
15:000%
16:000%
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Sat, Apr 11
24:000%
01:000%
02:000%
03:000%
04:0043%
05:0060%
06:0055%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
17:000%
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19:000%
20:000%
21:000%
22:000%
23:000%
Sun, Apr 12
24:000%
01:000%
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/Ljubljana
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
Thu, Apr 9 Sunrise 06:29 Sunset 19:43
04:00
18% -1.4°C 0mm 77% 0cm -24° 2.2°C 0mm 0.17kPa 24135m 1.2m/s 1.4m/s
05:00
9% -1.5°C 0mm 81% 0cm -15° 1.4°C 0mm 0.13kPa 24135m 1.1m/s 1.2m/s
06:00
13% -1.5°C 0mm 83% 0cm -5.6° 1°C 0mm 0.11kPa 24135m 1.1m/s 1.3m/s
07:00
17% -1.7°C 0mm 80% 0cm 4.6° 1.3°C 0mm 0.13kPa 24134m 1.4m/s 1.5m/s
08:00
21% -2.3°C 0mm 66% 0cm 15° 3.3°C 0mm 0.26kPa 24134m 2.6m/s 1.7m/s
09:00
38% -2.8°C 0mm 57% 0cm 25° 4.9°C 0mm 0.37kPa 24134m 2.4m/s 2.1m/s
10:00
56% -2.1°C 0mm 53% 0cm 35° 6.7°C 0mm 0.46kPa 24135m 2.2m/s 2.3m/s
11:00
73% -1.6°C 0mm 50% 0cm 43° 8.3°C 0mm 0.55kPa 24134m 2m/s 2.4m/s
12:00
76% -1°C 0mm 46% 0cm 49° 9.9°C 0mm 0.65kPa 24135m 2.1m/s 2.6m/s
13:00
80% -0.5°C 0mm 44% 0cm 51° 11°C 0mm 0.74kPa 24135m 2.2m/s 2.7m/s
14:00
83% -0.1°C 0mm 43% 0cm 50° 12°C 0mm 0.8kPa 24135m 2.3m/s 2.7m/s
15:00
73% 0.3°C 0mm 43% 0cm 44° 12°C 0mm 0.82kPa 24135m 2.4m/s 2.6m/s
16:00
63% 0.7°C 0mm 44% 0cm 36° 13°C 0mm 0.81kPa 24134m 2.3m/s 2.4m/s
17:00
53% 0.9°C 0mm 46% 0cm 27° 12°C 0mm 0.76kPa 24135m 2m/s 2.3m/s
18:00
61% 1°C 0mm 50% 0cm 17° 11°C 0mm 0.67kPa 24134m 1.9m/s 2.1m/s
19:00
70% 2°C 0mm 62% 0cm 6.7° 9°C 0mm 0.44kPa 24134m 2.3m/s 1.8m/s
20:00
78% 1.4°C 0mm 74% 0cm -3.5° 5.5°C 0mm 0.23kPa 24135m 1.3m/s 1.3m/s
21:00
83% 1.2°C 0mm 80% 0cm -13° 4.4°C 0mm 0.17kPa 24135m 1.2m/s 1.3m/s
22:00
89% 0.9°C 0mm 82% 0cm -22° 3.7°C 0mm 0.14kPa 24134m 1.2m/s 1.4m/s
23:00
94% 0.7°C 0mm 84% 0cm -29° 3.2°C 0mm 0.13kPa 24134m 1.3m/s 1.4m/s
Fri, Apr 10 Sunrise 06:29 Sunset 19:43
24:00
95% 0.4°C 0mm 85% 0cm -34° 2.8°C 0mm 0.11kPa 24135m 1.2m/s 1.3m/s
01:00
96% 0.3°C 0mm 86% 0cm -36° 2.5°C 0mm 0.1kPa 24134m 1.3m/s 1.5m/s
02:00
97% 0.1°C 0mm 87% 0cm -35° 2°C 0mm 0.09kPa 24135m 1.1m/s 1.3m/s
03:00
87% -0.1°C 0mm 88% 0cm -30° 1.7°C 0mm 0.08kPa 24134m 1.2m/s 1.4m/s
04:00
77% -0.2°C 0mm 89% 0cm -23° 1.5°C 0mm 0.08kPa 24134m 1.3m/s 1.5m/s
05:00
67% -0.4°C 0mm 90% 0cm -15° 1°C 0mm 0.07kPa 24135m 1.6m/s 1.6m/s
06:00
56% -0.5°C 0mm 91% 0cm -5.3° 0.75°C 0mm 0.06kPa 24134m 1.2m/s 1.4m/s
07:00
44% -0.5°C 0mm 88% 0cm 4.9° 1.2°C 0mm 0.08kPa 24134m 1.7m/s 1.5m/s
08:00
33% -0.3°C 0mm 78% 0cm 15° 3.2°C 0mm 0.17kPa 24135m 1.9m/s 1.5m/s
09:00
24% -0.2°C 0mm 68% 0cm 25° 5.2°C 0mm 0.29kPa 24134m 1.9m/s 1.8m/s
10:00
14% -0.1°C 0mm 61% 0cm 35° 6.9°C 0mm 0.39kPa 24134m 1.6m/s 2m/s
11:00
5% 0°C 0mm 56% 0cm 43° 8.3°C 0mm 0.48kPa 24135m 1.3m/s 2.1m/s
12:00
3% 0.4°C 0mm 52% 0cm 49° 9.8°C 0mm 0.58kPa 24135m 1.4m/s 2m/s
13:00
2% 1°C 0mm 50% 0cm 52° 11°C 0mm 0.67kPa 24134m 2.1m/s 2.1m/s
14:00
0% 1.3°C 0mm 49% 0cm 50° 12°C 0mm 0.69kPa 24134m 2m/s 2.1m/s
15:00
0% 1.4°C 0mm 51% 0cm 45° 11°C 0mm 0.65kPa 24134m 2m/s 2m/s
16:00
0% 1.4°C 0mm 55% 0cm 37° 10°C 0mm 0.56kPa 24134m 1.5m/s 1.7m/s
17:00
0% 1.4°C 0mm 55% 0cm 27° 10°C 0mm 0.55kPa 24134m 1.3m/s 1.8m/s
18:00
0% 1.6°C 0mm 60% 0cm 17° 9°C 0mm 0.46kPa 24134m 2.4m/s 2.3m/s
19:00
0% 1.5°C 0mm 64% 0cm 6.9° 7.8°C 0mm 0.37kPa 24135m 3.2m/s 2.1m/s
20:00
0% 1.4°C 0mm 69% 0cm -3.3° 6.7°C 0mm 0.3kPa 24135m 2.4m/s 1.6m/s
21:00
0% 1.4°C 0mm 74% 0cm -13° 5.7°C 0mm 0.24kPa 24135m 2.4m/s 1.6m/s
22:00
0% 1.3°C 0mm 76% 0cm -22° 5.1°C 0mm 0.21kPa 24134m 1.5m/s 1.1m/s
23:00
0% 1.2°C 0mm 78% 0cm -29° 4.7°C 0mm 0.19kPa 24135m 0.82m/s 0.71m/s
Sat, Apr 11 Sunrise 06:27 Sunset 19:44
24:00
0% 1.2°C 0mm 80% 0cm -34° 4.3°C 0mm 0.16kPa 24134m 1.1m/s 0.89m/s
01:00
0% 1.3°C 0mm 84% 0cm -35° 3.8°C 0mm 0.13kPa 24135m 1.2m/s 1.1m/s
02:00
0% 1.5°C 0mm 86% 0cm -34° 3.5°C 0mm 0.11kPa 24134m 1.5m/s 1.3m/s
03:00
0% 1.5°C 0mm 92% 0cm -30° 2.8°C 0mm 0.06kPa 24134m 1.6m/s 1.3m/s
04:00
1% 1.7°C 0mm 94% 0cm -23° 2.6°C 0mm 0.05kPa 24134m 1.9m/s 1.5m/s
05:00
1% 1.6°C 0mm 95% 0cm -15° 2.3°C 0mm 0.04kPa 3547m 2.1m/s 1.7m/s
06:00
1% 1.7°C 0mm 94% 0cm -5° 2.6°C 0mm 0.04kPa 2104m 2.2m/s 1.6m/s
07:00
1% 1.9°C 0mm 91% 0cm 5.3° 3.2°C 0mm 0.07kPa 24135m 2m/s 1.5m/s
08:00
1% 1.9°C 0mm 88% 0cm 16° 3.8°C 0mm 0.1kPa 24135m 2m/s 1.5m/s
09:00
2% 3.3°C 0mm 77% 0cm 26° 7°C 0mm 0.23kPa 24135m 1.9m/s 1.4m/s
10:00
3% 4.4°C 0mm 67% 0cm 35° 10°C 0mm 0.41kPa 24135m 1.8m/s 1.3m/s
11:00
4% 5°C 0mm 57% 0cm 44° 13°C 0mm 0.67kPa 24135m 1.7m/s 1.2m/s
12:00
4% 5.2°C 0mm 64% 0cm 50° 12°C 0mm 0.51kPa 24135m 1.7m/s 1.4m/s
13:00
4% 5.2°C 0mm 71% 0cm 52° 10°C 0mm 0.37kPa 24135m 1.6m/s 1.6m/s
14:00
4% 5.1°C 0mm 78% 0cm 50° 8.8°C 0mm 0.25kPa 24135m 1.6m/s 1.9m/s
15:00
3% 4.9°C 0mm 81% 0cm 45° 8°C 0mm 0.2kPa 24135m 1.6m/s 1.8m/s
16:00
2% 4.8°C 0mm 85% 0cm 37° 7.2°C 0mm 0.16kPa 24135m 1.5m/s 1.8m/s
17:00
1% 4.6°C 0mm 88% 0cm 28° 6.4°C 0mm 0.11kPa 24135m 1.4m/s 1.8m/s
18:00
2% 4.5°C 0mm 89% 0cm 17° 6.1°C 0mm 0.1kPa 23640m 1.5m/s 1.8m/s
19:00
4% 4.3°C 0mm 90% 0cm 7.1° 5.8°C 0mm 0.09kPa 23145m 1.5m/s 1.8m/s
20:00
5% 4.2°C 0mm 91% 0cm -3° 5.5°C 0mm 0.08kPa 22650m 1.5m/s 1.9m/s
21:00
15% 3.9°C 0mm 91% 0cm -13° 5.2°C 0mm 0.08kPa 23145m 1.5m/s 1.8m/s
22:00
24% 3.7°C 0mm 91% 0cm -21° 5°C 0mm 0.07kPa 23640m 1.5m/s 1.8m/s
23:00
34% 3.5°C 0mm 92% 0cm -28° 4.7°C 0mm 0.07kPa 24135m 1.5m/s 1.8m/s
Sun, Apr 12 Sunrise 06:25 Sunset 19:45
24:00
28% 3.7°C 0mm 87% 0cm -33° 5.8°C 0mm 0.12kPa 24135m 1.6m/s 1.6m/s
01:00
22% 3.9°C 0mm 82% 0cm -35° 6.8°C 0mm 0.18kPa 24135m 1.8m/s 1.3m/s
02:00
16% 4.1°C 0mm 77% 0cm -34° 7.9°C 0mm 0.25kPa 24135m 1.9m/s 1.1m/s
03:00
15% 4.7°C 0mm 68% 0cm -29° 10°C 0mm 0.4kPa 24135m 1.8m/s 0.92m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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