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Rule Fog Hunter

Windermere - Fog Hunter - Lake District

Bowness-on-Windermere, England, United Kingdom

Thick, moody fog for atmospheric forest and landscape shots

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London
Next opportunity
Dense Fog (lingering)
Windermere
Tue, Jan 13 · 05:00–07:00 · 2h window
Medium confidence
59%
Dense Fog (lingering) at Sunrise
Windermere
Tue, Jan 13 · 07:00–10:00
High
Dense Fog (lingering)
Windermere
Fri, Jan 16 · 02:00–04:00
Medium
Dense Fog (lingering)
Windermere
Sat, Jan 17 · 21:00–01:00
Low

What this forecast looks for

Plain-language explanation from the rule

This forecast tracks the conditions that create the Lake District's legendary atmospheric photography. We combine fog probability, dewpoint spread, visibility, and wind data to predict when and where mist will form over these famous lakes and valleys.

The Lake District's combination of lakes, tarns, and enclosed valleys creates ideal conditions for fog formation. Cool, calm nights allow mist to pool in valley bottoms, creating ethereal scenes at dawn that have inspired poets and photographers for centuries.

What makes the Lake District special for fog photography:

  • Lake mist - Cold water surfaces generate fog that pools over the lakes at dawn
  • Valley inversions - Mountain-ringed valleys trap mist while fells rise above
  • Romantic landscapes - This is Wordsworth and Turner country, with timeless views
  • Accessible locations - Well-maintained paths reach viewpoints above the fog layer

Peak fog season runs from late August through October, when temperature differentials are greatest. The best conditions typically occur on calm, clear nights when temperatures drop near dewpoint. Arrive before dawn—lake mist often lifts within an hour or two of sunrise. Higher viewpoints like Catbells or Loughrigg offer shots looking down at fog-filled valleys.

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72-hour requirements breakdown

What passed or failed, hour by hour
5matching hours in the next 72 hoursJump to next match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Fog Probability
≥ 85.0%
Dewpoint Spread
≤ 2.0°C
Visibility
≤ 3000.0m
Wind Speed
≤ 2.0m/s
Sun, Jan 11
12:000%1°C4600m4.8m/s
13:000%1.2°C8060m5.8m/s
14:000%1.2°C7960m6.9m/s
15:000%1°C7460m7.8m/s
16:000%0.7°C5180m8.6m/s
17:000%0.9°C7100m8.9m/s
18:000%1.1°C8220m9.2m/s
19:000%1.1°C9340m10m/s
20:000%0.9°C9300m11m/s
21:000%1.4°C9900m10m/s
22:000%1.7°C14460m8.6m/s
23:000%1.9°C15080m8.8m/s
Mon, Jan 12
24:000%1.5°C11280m8.8m/s
01:000%1.9°C14120m8.2m/s
02:000%1.7°C13860m7.5m/s
03:000%1.7°C12620m7.2m/s
04:000%1.9°C15440m6.8m/s
05:000%1.5°C11740m6.1m/s
06:000%1.1°C6220m5.8m/s
07:000%0.6°C2880m6.2m/s
08:000%0.4°C1700m6.2m/s
09:0074%0.4°C1400m5.9m/s
10:0072%0.7°C1200m5.9m/s
11:000%0.9°C2660m6.2m/s
12:000%0.9°C2360m6.6m/s
13:000%0.9°C3960m6.8m/s
14:000%0.9°C3860m7m/s
15:000%1.1°C5780m7.1m/s
16:000%1.4°C9800m6.7m/s
17:0045%0.9°C5340m5.8m/s
18:0053%0.9°C5540m5.6m/s
19:0061%0.9°C4840m6m/s
20:000%0.7°C3820m6.3m/s
21:000%0.8°C3960m6.5m/s
22:0053%0.9°C5100m6m/s
23:000%1.2°C7320m4.8m/s
Tue, Jan 13
24:000%1.1°C5760m3.8m/s
01:000%1.1°C6240m3.3m/s
02:000%1.2°C7520m3m/s
03:000%1.1°C7820m1.8m/s
04:0092%0.7°C4120m1.1m/s
05:0094%0.4°C2460m1.1m/s
06:00100%0.1°C1740m1.1m/s
07:00100%0.3°C1560m1.3m/s
08:00100%0.3°C1540m1.2m/s
09:00100%0.3°C1365m1.2m/s
10:0051%0.6°C1760m1.2m/s
11:000%1.4°C10220m1.1m/s
12:000%1.7°C15580m1.5m/s
13:000%1.9°C18500m1.1m/s
14:000%1.7°C9040m1.1m/s
15:000%1.5°C14640m1.3m/s
16:000%1.5°C14000m1.1m/s
17:000%1.4°C11400m1.2m/s
18:000%0.9°C6380m1.4m/s
19:0038%0.9°C5960m1.6m/s
20:0038%0.9°C5820m1.7m/s
21:000%1°C7560m1.6m/s
22:0038%0.9°C5580m1.1m/s
23:0081%0.7°C5320m0.51m/s
Wed, Jan 14
24:0092%0.7°C4800m0.58m/s
01:0092%0.6°C3680m1m/s
02:0092%0.7°C4860m0.95m/s
03:000%1.4°C12040m1.7m/s
04:000%2.1°C23400m1.8m/s
05:000%2°C20400m1.3m/s
06:000%1.6°C16800m1.6m/s
07:000%1.6°C16920m1.3m/s
08:000%1.3°C11620m1.2m/s
09:000%1°C8480m1.3m/s
10:000%1°C8760m1.1m/s
11:000%1.8°C20340m0.92m/s
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/London
Dew Point
°C
Rainfall
mm
Relative Humidity
%
Snowfall
cm
Temperature
°C
Total Precipitation
mm
Vapor Pressure Deficit
kPa
Wind Gusts
m/s
Sun, Jan 11 Sunrise 08:28 Sunset 16:11
13:00
3.8°C 3.2mm 92% 0cm 5°C 3.2mm 0.07kPa 9.6m/s
14:00
4.3°C 0.4mm 92% 0cm 5.5°C 0.4mm 0.07kPa 11m/s
15:00
4.9°C 0.7mm 93% 0cm 5.9°C 0.7mm 0.06kPa 13m/s
16:00
5.5°C 2.2mm 95% 0cm 6.2°C 2.2mm 0.05kPa 15m/s
17:00 ☾
5.7°C 2.6mm 94% 0cm 6.6°C 2.6mm 0.06kPa 15m/s
18:00 ☾
5.8°C 0.2mm 93% 0cm 6.9°C 0.2mm 0.07kPa 16m/s
19:00 ☾
6.6°C 0.4mm 93% 0cm 7.7°C 0.4mm 0.07kPa 17m/s
20:00 ☾
7.3°C 2mm 94% 0cm 8.2°C 2mm 0.07kPa 20m/s
21:00 ☾
7.5°C 1.6mm 91% 0cm 8.9°C 1.6mm 0.1kPa 20m/s
22:00 ☾
7.4°C 0mm 89% 0cm 9.1°C 0.2mm 0.13kPa 17m/s
23:00 ☾
6.8°C 0mm 88% 0cm 8.7°C 0mm 0.13kPa 15m/s
Mon, Jan 12 Sunrise 08:27 Sunset 16:13
24:00 ☾
7.1°C 0mm 90% 0cm 8.6°C 0mm 0.11kPa 15m/s
01:00 ☾
6.5°C 0mm 88% 0cm 8.4°C 0mm 0.13kPa 15m/s
02:00 ☾
6.5°C 0mm 89% 0cm 8.2°C 0mm 0.12kPa 14m/s
03:00 ☾
6.4°C 0mm 89% 0cm 8.1°C 0mm 0.12kPa 13m/s
04:00 ☾
6.1°C 0mm 88% 0cm 8°C 0mm 0.13kPa 12m/s
05:00 ☾
6.2°C 0mm 90% 0cm 7.7°C 0mm 0.11kPa 11m/s
06:00 ☾
6.1°C 0mm 93% 0cm 7.2°C 0mm 0.07kPa 9.9m/s
07:00 ☾
6.7°C 0mm 96% 0cm 7.3°C 0mm 0.04kPa 10m/s
08:00 ☾
6.8°C 0mm 97% 0cm 7.2°C 0mm 0.03kPa 10m/s
09:00
6.6°C 0mm 97% 0cm 7°C 0mm 0.03kPa 10m/s
10:00
6.7°C 0mm 95% 0cm 7.4°C 0mm 0.05kPa 9.9m/s
11:00
6.7°C 0mm 94% 0cm 7.6°C 0mm 0.06kPa 10m/s
12:00
6.8°C 0mm 94% 0cm 7.7°C 0mm 0.06kPa 11m/s
13:00
6.9°C 0mm 94% 0cm 7.8°C 0mm 0.06kPa 11m/s
14:00
7°C 0mm 94% 0cm 7.9°C 0mm 0.06kPa 12m/s
15:00
7.3°C 0mm 93% 0cm 8.4°C 0mm 0.08kPa 12m/s
16:00
6.8°C 0mm 91% 0cm 8.2°C 0mm 0.1kPa 12m/s
17:00 ☾
6.8°C 0mm 94% 0cm 7.7°C 0mm 0.06kPa 11m/s
18:00 ☾
6.7°C 0mm 94% 0cm 7.6°C 0mm 0.06kPa 9.5m/s
19:00 ☾
6.6°C 0mm 94% 0cm 7.5°C 0mm 0.06kPa 9.7m/s
20:00 ☾
6.8°C 0mm 95% 0cm 7.5°C 0mm 0.05kPa 10m/s
21:00 ☾
6.9°C 0mm 95% 0cm 7.7°C 0mm 0.05kPa 11m/s
22:00 ☾
6.9°C 0mm 94% 0cm 7.8°C 0mm 0.06kPa 11m/s
23:00 ☾
6.6°C 0mm 92% 0cm 7.8°C 0mm 0.08kPa 9.7m/s
Tue, Jan 13 Sunrise 08:26 Sunset 16:14
24:00 ☾
6.6°C 0mm 93% 0cm 7.7°C 0mm 0.07kPa 7.8m/s
01:00 ☾
6.5°C 0mm 93% 0cm 7.6°C 0mm 0.07kPa 6.1m/s
02:00 ☾
6.6°C 0mm 92% 0cm 7.8°C 0mm 0.08kPa 5.4m/s
03:00 ☾
6.4°C 0mm 93% 0cm 7.5°C 0mm 0.07kPa 5m/s
04:00 ☾
6.2°C 0mm 95% 0cm 6.9°C 0mm 0.05kPa 2.9m/s
05:00 ☾
6°C 0mm 97% 0cm 6.4°C 0mm 0.03kPa 1.9m/s
06:00 ☾
6°C 0mm 99% 0cm 6.1°C 0mm 0.01kPa 1.8m/s
07:00 ☾
5.9°C 0mm 98% 0cm 6.2°C 0mm 0.02kPa 2.1m/s
08:00 ☾
5.7°C 0mm 98% 0cm 6°C 0mm 0.02kPa 2.1m/s
09:00
5.9°C 0mm 98% 0cm 6.2°C 0.08mm 0.02kPa 2m/s
10:00
6°C 0mm 96% 0cm 6.6°C 0.2mm 0.04kPa 2.1m/s
11:00
5.8°C 0mm 91% 0cm 7.2°C 0mm 0.09kPa 2.1m/s
12:00
5.9°C 0mm 89% 0cm 7.6°C 0mm 0.11kPa 2.5m/s
13:00
6°C 0mm 88% 0cm 7.9°C 0mm 0.13kPa 2.6m/s
14:00
6.1°C 0.3mm 89% 0cm 7.8°C 0.3mm 0.12kPa 2.3m/s
15:00
6.1°C 1.5mm 90% 0cm 7.6°C 1.6mm 0.1kPa 2.4m/s
16:00
5.9°C 0.3mm 90% 0cm 7.4°C 0.4mm 0.1kPa 2m/s
17:00 ☾
5.7°C 0.6mm 91% 0cm 7.1°C 0.6mm 0.09kPa 2.1m/s
18:00 ☾
5.8°C 1.2mm 94% 0cm 6.7°C 1.2mm 0.06kPa 2.1m/s
19:00 ☾
5.5°C 0.7mm 94% 0cm 6.4°C 0.7mm 0.06kPa 2.7m/s
20:00 ☾
5.2°C 0.5mm 94% 0cm 6.1°C 0.5mm 0.06kPa 2.8m/s
21:00 ☾
5.1°C 0.5mm 93% 0cm 6.1°C 0.5mm 0.07kPa 2.8m/s
22:00 ☾
4.9°C 0.3mm 94% 0cm 5.8°C 0.3mm 0.06kPa 2.6m/s
23:00 ☾
4.9°C 0.1mm 95% 0cm 5.6°C 0.1mm 0.05kPa 1.7m/s
Wed, Jan 14 Sunrise 08:25 Sunset 16:16
24:00 ☾
4.9°C 0mm 95% 0cm 5.6°C 0mm 0.05kPa 0.9m/s
01:00 ☾
4.8°C 0mm 96% 0cm 5.4°C 0mm 0.04kPa 1.7m/s
02:00 ☾
4.7°C 0mm 95% 0cm 5.4°C 0mm 0.04kPa 1.7m/s
03:00 ☾
4°C 0mm 91% 0cm 5.4°C 0mm 0.08kPa 2.8m/s
04:00 ☾
3°C 0mm 86% 0cm 5.1°C 0mm 0.12kPa 3.8m/s
05:00 ☾
2.4°C 0mm 87% 0cm 4.4°C 0mm 0.11kPa 3m/s
06:00 ☾
1.8°C 0mm 89% 0cm 3.4°C 0mm 0.09kPa 2.6m/s
07:00 ☾
1°C 0mm 89% 0cm 2.6°C 0mm 0.08kPa 2.7m/s
08:00 ☾
0.5°C 0mm 91% 0cm 1.8°C 0mm 0.06kPa 2.3m/s
09:00
0.3°C 0mm 93% 0cm 1.3°C 0mm 0.05kPa 2.1m/s
10:00
0.8°C 0mm 93% 0cm 1.8°C 0mm 0.05kPa 2m/s
11:00
1.8°C 0mm 88% 0cm 3.6°C 0mm 0.09kPa 1.9m/s
12:00
0.5°C 0mm 74% 0cm 4.7°C 0mm 0.22kPa 3.3m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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