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Rule Fog Hunter

Grundlsee - Fog Hunter - Salzkammergut

Grundlsee, Styria, Austria

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions
Fog Probability
71%
Dewpoint Spread0.5°C
Visibility224 (Fog)
Relative Humidity97%
Wind Speed1.9m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Vienna
fog weather icon
Next opportunity
Moderate Fog
Grundlsee
Today · 09:00–10:00 · 1h window
Medium confidence
59%
🌫️Fog Probability70.8%
Dewpoint Spread: 0.5°C
Visibility: 224 (Fog)
Relative Humidity: 97%
Wind Speed: 1.9m/s (calm conditions)
fog weather icon
Moderate Fog
Grundlsee
Tomorrow · 21:00–22:00
🌫️Fog Probability:82.2%
Medium
fog weather icon
Dense Fog
Grundlsee
Tue, Apr 14 · 17:00–18:00
🌫️Fog Probability:90.5%
Medium
fog weather icon
Moderate Fog at Sunset
Grundlsee
Tue, Apr 14 · 19:00–21:00
🌫️Fog Probability:60.7-62.7%
Low
fog weather icon
Dense Fog
Grundlsee
Tue, Apr 14 · 21:00–01:00
🌫️Fog Probability:64.1-99.7%
Medium
fog weather icon
Moderate Fog at Sunset
Grundlsee
Wed, Apr 15 · 19:00–21:00
🌫️Fog Probability:66.7-78.4%
Low
fog weather icon
Moderate Fog
Grundlsee
Wed, Apr 15 · 21:00–24:00
🌫️Fog Probability:78.4%
Medium
+4 more windows in the next 10 days

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the atmospheric conditions that create Austria's most iconic lakeside photography. We combine fog probability, wind speed, and visibility data to predict when mist and mirror-like reflections transform the Salzkammergut.

Hallstatt may be the world's most photographed village, with its pastel houses reflected in an alpine lake beneath towering peaks. But the wider Salzkammergut region offers equally stunning scenes at less-visited lakes, all sharing the same dramatic geography.

What makes Salzkammergut special for photography:

  • Lake fog - Cool nights and sheltered valleys create reliable morning mist
  • Mirror reflections - Calm alpine lakes produce perfect reflections of villages and peaks
  • Alpine backdrop - The Dachstein massif provides dramatic mountain scenery
  • Historic villages - Centuries-old lakeside towns offer timeless compositions

Peak fog season runs from September through November. Arrive well before dawn for the best mist at Hallstatt—the classic viewpoint fills quickly. For quieter alternatives, Gosausee offers stunning Dachstein reflections with fewer crowds. Wind is the enemy of reflections—our forecast helps you find calm mornings.

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72-hour requirements breakdown

What passed or failed, hour by hour
3matching hours in the next 74 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Vienna
Fog Probability
≥ 60.0%
Sat, Apr 11
06:0089%
07:0053%
08:0053%
09:0071%
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, Apr 12
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%
18:0033%
19:0053%
20:0050%
21:0082%
22:0043%
23:0034%
Mon, Apr 13
24:000%
01:0037%
02:0050%
03:0050%
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, Apr 14
24:000%
01:000%
02:000%
03:000%
04:000%
05:000%
06:000%
07:000%
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/Vienna
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
Sat, Apr 11 Sunrise 06:24 Sunset 19:48
09:00
0% 2.4°C 0.02mm 97% 0cm 25° 2.9°C 0.06mm 0.02kPa 224m 2.4m/s 1.9m/s
10:00
0% 3.2°C 0mm 92% 0cm 35° 4.4°C 0.06mm 0.07kPa 23348m 2.1m/s 2m/s
11:00
0% 3.7°C 0mm 82% 0cm 43° 6.6°C 0.06mm 0.18kPa 24135m 1.3m/s 1.6m/s
12:00
0% 2.9°C 0.02mm 70% 0cm 48° 8.1°C 0.06mm 0.33kPa 24135m 0.9m/s 0.77m/s
13:00
0% 3°C 0mm 66% 0cm 51° 9.1°C 0.06mm 0.39kPa 24134m 1.4m/s 0.66m/s
14:00
0% 3.5°C 0mm 61% 0cm 49° 11°C 0.06mm 0.51kPa 24134m 1.6m/s 1.1m/s
15:00
0% 3.5°C 0mm 56% 0cm 44° 12°C 0mm 0.61kPa 24135m 2.3m/s 0.55m/s
16:00
0% 3.2°C 0mm 54% 0cm 36° 12°C 0mm 0.66kPa 24135m 3.5m/s 1.3m/s
17:00
0% 3.4°C 0mm 55% 0cm 27° 12°C 0.06mm 0.65kPa 24135m 3m/s 1.1m/s
18:00
1% 4.8°C 0mm 62% 0cm 17° 12°C 0.06mm 0.53kPa 24134m 1.9m/s 1.2m/s
19:00
2% 5°C 0mm 76% 0cm 7.3° 8.9°C 0.13mm 0.27kPa 24135m 1m/s 1m/s
20:00 ☾
3% 3.3°C 0mm 88% 0cm -2.6° 5.1°C 0.25mm 0.11kPa 24135m 1m/s 0.89m/s
21:00 ☾
32% 2.7°C 0mm 92% 0cm -12° 3.9°C 0.06mm 0.07kPa 24134m 0.22m/s 0.21m/s
22:00 ☾
60% 2.3°C 0mm 92% 0cm -20° 3.4°C 0.06mm 0.06kPa 24135m 0.92m/s 1m/s
23:00 ☾
89% 2.1°C 0mm 92% 0cm -27° 3.3°C 0.06mm 0.06kPa 24134m 1.3m/s 1.4m/s
Sun, Apr 12 Sunrise 06:24 Sunset 19:48
24:00 ☾
77% 1.9°C 0mm 91% 0cm -32° 3.3°C 0.06mm 0.07kPa 24135m 1.5m/s 1.8m/s
01:00 ☾
65% 2°C 0mm 90% 0cm -34° 3.6°C 0.06mm 0.08kPa 24134m 1.8m/s 2.1m/s
02:00 ☾
53% 2.2°C 0mm 88% 0cm -32° 3.9°C 0.06mm 0.09kPa 24135m 1.8m/s 2.1m/s
03:00 ☾
36% 2.2°C 0mm 88% 0cm -28° 4°C 0mm 0.1kPa 24134m 1.5m/s 1.7m/s
04:00 ☾
18% 2.2°C 0mm 88% 0cm -22° 4°C 0mm 0.1kPa 24134m 1.6m/s 1.8m/s
05:00 ☾
1% 2.3°C 0.01mm 88% 0cm -14° 4.2°C 0mm 0.1kPa 24134m 1.1m/s 1.3m/s
06:00 ☾
1% 2°C 0mm 87% 0cm -4.3° 4°C 0mm 0.11kPa 24135m 1.7m/s 1.9m/s
07:00
2% 1.9°C 0mm 86% 0cm 5.6° 4°C 0mm 0.11kPa 24134m 1.4m/s 1.5m/s
08:00
2% 3.9°C 0mm 80% 0cm 16° 7.1°C 0mm 0.2kPa 24135m 1.4m/s 1.2m/s
09:00
6% 4.4°C 0mm 74% 0cm 26° 8.9°C 0mm 0.3kPa 24134m 1.1m/s 0.78m/s
10:00
10% 5.1°C 0mm 66% 0cm 35° 11°C 0mm 0.45kPa 24134m 1m/s 1.1m/s
11:00
14% 5.4°C 0mm 62% 0cm 43° 13°C 0mm 0.56kPa 24134m 1.2m/s 1.4m/s
12:00
11% 5.5°C 0mm 57% 0cm 49° 14°C 0mm 0.67kPa 24135m 1.7m/s 1.7m/s
13:00
8% 5.7°C 0mm 55% 0cm 51° 15°C 0mm 0.75kPa 24134m 2.1m/s 1.8m/s
14:00
5% 6.3°C 0mm 61% 0cm 50° 14°C 0.19mm 0.61kPa 19399m 2.2m/s 2.1m/s
15:00
4% 7.8°C 0mm 79% 0cm 44° 11°C 0.13mm 0.28kPa 23654m 2.9m/s 2.8m/s
16:00
4% 8.2°C 0mm 84% 0cm 37° 11°C 0.25mm 0.2kPa 21535m 2.3m/s 2.7m/s
17:00
3% 8.2°C 0mm 91% 0cm 27° 9.5°C 0.31mm 0.1kPa 9296m 2.5m/s 2.7m/s
18:00
3% 7.8°C 0mm 96% 0cm 18° 8.4°C 0.38mm 0.05kPa 456m 2.5m/s 2.2m/s
19:00
2% 7.5°C 0mm 97% 0cm 7.6° 7.8°C 0.44mm 0.03kPa 495m 2.4m/s 1.9m/s
20:00 ☾
2% 6.8°C 0mm 98% 0cm -2.3° 7.2°C 0.44mm 0.02kPa 9357m 2.1m/s 1.7m/s
21:00 ☾
2% 6°C 0mm 97% 0cm -12° 6.5°C 0mm 0.03kPa 4354m 2.1m/s 1.8m/s
22:00 ☾
2% 4.8°C 0mm 95% 0cm -20° 5.5°C 0mm 0.05kPa 24135m 1.8m/s 2m/s
23:00 ☾
2% 4°C 0mm 93% 0cm -27° 5°C 0mm 0.06kPa 24134m 2.3m/s 2.7m/s
Mon, Apr 13 Sunrise 06:22 Sunset 19:49
24:00 ☾
1% 4.2°C 0mm 93% 0cm -32° 5.2°C 0mm 0.06kPa 24134m 2.8m/s 2.9m/s
01:00 ☾
1% 4.1°C 0mm 94% 0cm -33° 5°C 0mm 0.05kPa 23349m 3.5m/s 3.1m/s
02:00 ☾
0% 3.9°C 0mm 96% 0cm -32° 4.5°C 0mm 0.04kPa 23780m 3.3m/s 2.9m/s
03:00 ☾
0% 3.7°C 0mm 95% 0cm -28° 4.4°C 0mm 0.04kPa 24135m 3.4m/s 2.9m/s
04:00 ☾
1% 4.1°C 0mm 90% 0cm -21° 5.5°C 0mm 0.09kPa 24134m 3.3m/s 3m/s
05:00 ☾
1% 4.4°C 0mm 86% 0cm -13° 6.6°C 0mm 0.13kPa 24134m 3.3m/s 2.7m/s
06:00 ☾
1% 4.1°C 0mm 90% 0cm -4° 5.7°C 0mm 0.09kPa 24134m 3.1m/s 2.7m/s
07:00
0% 4.1°C 0mm 92% 0cm 5.9° 5.3°C 0mm 0.07kPa 24134m 3.2m/s 2.6m/s
08:00
0% 5.3°C 0mm 90% 0cm 16° 6.8°C 0mm 0.1kPa 23686m 3.9m/s 2.6m/s
09:00
0% 5.2°C 0mm 82% 0cm 26° 8.1°C 0mm 0.2kPa 24135m 3.9m/s 2.9m/s
10:00
1% 4.8°C 0mm 75% 0cm 35° 9.1°C 0mm 0.29kPa 24134m 3.8m/s 2.8m/s
11:00
1% 4.5°C 0mm 67% 0cm 43° 10°C 0mm 0.41kPa 24134m 3.7m/s 2.7m/s
12:00
1% 3.9°C 0mm 60% 0cm 49° 11°C 0.06mm 0.53kPa 24134m 3.7m/s 2.7m/s
13:00
1% 3.3°C 0mm 55% 0cm 52° 12°C 0.06mm 0.64kPa 24135m 3.9m/s 2.6m/s
14:00
1% 3°C 0mm 51% 0cm 50° 13°C 0.06mm 0.74kPa 24134m 3.9m/s 2.7m/s
15:00
1% 3.8°C 0mm 63% 0cm 45° 11°C 0.04mm 0.47kPa 24134m 3.1m/s 2.3m/s
16:00
1% 4.1°C 0mm 75% 0cm 37° 8.2°C 0.02mm 0.27kPa 24135m 2.3m/s 1.9m/s
17:00
1% 3.9°C 0mm 88% 0cm 28° 5.8°C 0mm 0.11kPa 24135m 1.5m/s 1.5m/s
18:00
1% 3.9°C 0.03mm 88% 0cm 18° 5.8°C 0.02mm 0.11kPa 24135m 1.5m/s 1.5m/s
19:00
0% 3.8°C 0.06mm 88% 0cm 7.8° 5.7°C 0.04mm 0.11kPa 24135m 1.5m/s 1.4m/s
20:00 ☾
0% 3.8°C 0.09mm 87% 0cm -2.1° 5.7°C 0.06mm 0.12kPa 24135m 1.5m/s 1.3m/s
21:00 ☾
0% 4°C 0.09mm 88% 0cm -12° 5.8°C 0.1mm 0.11kPa 24124m 1.2m/s 1.1m/s
22:00 ☾
0% 4.1°C 0.08mm 89% 0cm -20° 5.9°C 0.15mm 0.11kPa 24113m 0.92m/s 0.89m/s
23:00 ☾
0% 4.3°C 0.08mm 89% 0cm -27° 6°C 0.19mm 0.1kPa 24102m 0.62m/s 0.67m/s
Tue, Apr 14 Sunrise 06:20 Sunset 19:51
24:00 ☾
0% 4.5°C 0.14mm 90% 0cm -31° 6°C 0.4mm 0.09kPa 19536m 1.1m/s 0.93m/s
01:00 ☾
0% 4.7°C 0.21mm 91% 0cm -33° 6°C 0.6mm 0.08kPa 14970m 1.6m/s 1.2m/s
02:00 ☾
0% 4.9°C 0.27mm 92% 0cm -32° 6.1°C 0.81mm 0.07kPa 10404m 2m/s 1.5m/s
03:00 ☾
0% 4.4°C 0.31mm 93% 0cm -28° 5.4°C 1mm 0.06kPa 9674m 2.1m/s 1.6m/s
04:00 ☾
0% 3.9°C 0.34mm 94% 0cm -21° 4.8°C 1.2mm 0.05kPa 8943m 2.1m/s 1.7m/s
05:00 ☾
0% 3.4°C 0.38mm 94% 0cm -13° 4.2°C 1.4mm 0.05kPa 8213m 2.1m/s 1.8m/s
06:00 ☾
0% 3.3°C 0.36mm 95% 0cm -3.7° 4°C 1.6mm 0.04kPa 5518m 2m/s 1.6m/s
07:00
0% 3.3°C 0.35mm 96% 0cm 6.2° 3.9°C 1.9mm 0.03kPa 2824m 1.9m/s 1.4m/s
08:00
0% 3.2°C 0.33mm 97% 0cm 16° 3.7°C 2.2mm 0.03kPa 129m 1.7m/s 1.2m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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