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Rule Fog Hunter

Bibury - Fog Hunter - Cotswolds

Bibury, England, United Kingdom

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
Dewpoint Spread20.5°C
Visibility24134 (Clear)
Relative Humidity28%
Wind Speed2.6m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

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

This forecast tracks morning mist and fog conditions that transform the Cotswolds' gentle landscapes into atmospheric scenes worthy of a Constable painting. We monitor temperature inversions, humidity levels, and overnight cooling to predict when valley fog will blanket the honey-stone villages and rolling hills.

The Cotswolds' distinctive topography of shallow river valleys creates perfect conditions for radiation fog and valley mist. Cold air pools in valleys overnight, and when combined with moisture from the River Windrush and its tributaries, creates dreamy morning conditions that soften the already pastoral landscape.

What makes Cotswolds fog photography special:

  • Slad Valley inversions - Laurie Lee's famous valley fills with morning mist, with hilltop villages emerging as islands above the fog layer
  • Arlington Row mist - Bibury's iconic weavers' cottages partially obscured by dawn fog, with honey-stone glowing through the haze
  • Valley villages - Bourton-on-the-Water and Lower Slaughter with fog settled along their streams, stone bridges emerging from mist
  • Church tower beacons - Stow-on-the-Wold and Painswick church towers rising above fog blankets, marking village locations

The best fog photography occurs on calm, clear autumn and winter mornings (September-March) following cold nights. Slad Valley—immortalized in Laurie Lee's "Cider with Rosie"—is particularly reliable for valley fog, with viewpoints along the valley rim offering elevated perspectives. Arlington Row benefits from mist rising from the River Coln, creating dreamy morning compositions of England's most photographed street. Arrive before dawn to capture the transition from pre-dawn blue light through foggy golden hour. Fog typically burns off by mid-morning, creating a narrow window of opportunity.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 80 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Fog Probability
≥ 75.0%
Wed, Jul 8
05:000%
06:000%
07:000%
08:000%
09:000%
10:000%
11:000%
12:000%
13:000%
14:000%
15:000%
16:000%
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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%
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Fri, Jul 10
24:000%
01:000%
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05:000%
06:000%
07:000%
08:000%
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Sat, Jul 11
24:000%
01:000%
02:000%
03:000%
04:000%
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06:000%
07:000%
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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
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 04:59 Sunset 21:25
14:00
100% 10°C 0mm 28% 0cm 59° 31°C 0mm 3.2kPa 24134m 2.2m/s 2.6m/s
15:00
100% 9.2°C 0mm 25% 0cm 54° 31°C 0mm 3.4kPa 24135m 2.4m/s 2.9m/s
16:00
100% 8.9°C 0mm 24% 0cm 47° 32°C 0mm 3.6kPa 24135m 2.6m/s 3m/s
17:00
100% 9.8°C 0mm 26% 0cm 38° 32°C 0mm 3.5kPa 24135m 2.7m/s 3.3m/s
18:00
100% 11°C 0mm 29% 0cm 29° 31°C 0mm 3.3kPa 24135m 2.7m/s 3.8m/s
19:00
100% 12°C 0mm 32% 0cm 19° 30°C 0mm 2.9kPa 24134m 2.8m/s 4m/s
20:00
100% 13°C 0mm 39% 0cm 11° 28°C 0mm 2.3kPa 24134m 5.6m/s 3.8m/s
21:00
99% 13°C 0mm 49% 0cm 2.6° 24°C 0mm 1.6kPa 24134m 6.3m/s 3.7m/s
22:00
99% 13°C 0mm 57% 0cm -4.7° 22°C 0mm 1.1kPa 24135m 7.4m/s 4m/s
23:00
99% 14°C 0mm 63% 0cm -10° 21°C 0mm 0.91kPa 24134m 7.5m/s 3.6m/s
Thu, Jul 9 Sunrise 04:59 Sunset 21:25
24:00
100% 14°C 0mm 69% 0cm -14° 20°C 0mm 0.73kPa 24134m 4.4m/s 3m/s
01:00
100% 14°C 0mm 75% 0cm -16° 19°C 0mm 0.54kPa 24135m 1.9m/s 1.9m/s
02:00
100% 14°C 0mm 78% 0cm -15° 18°C 0mm 0.47kPa 24135m 2m/s 2m/s
03:00
100% 14°C 0mm 78% 0cm -12° 18°C 0mm 0.44kPa 24135m 2.7m/s 2.7m/s
04:00
100% 14°C 0mm 80% 0cm -7.3° 17°C 0mm 0.39kPa 24134m 3m/s 2.9m/s
05:00
100% 13°C 0mm 83% 0cm -0.4° 16°C 0mm 0.32kPa 24134m 2.4m/s 2.4m/s
06:00
99% 13°C 0mm 79% 0cm 17°C 0mm 0.4kPa 24134m 2.7m/s 2.2m/s
07:00
99% 14°C 0mm 68% 0cm 16° 20°C 0mm 0.72kPa 24135m 2.8m/s 2m/s
08:00
98% 14°C 0mm 59% 0cm 25° 22°C 0mm 1.1kPa 24135m 2.4m/s 2.3m/s
09:00
97% 14°C 0mm 52% 0cm 34° 24°C 0mm 1.4kPa 24134m 2.1m/s 2.2m/s
10:00
96% 14°C 0mm 46% 0cm 43° 26°C 0mm 1.9kPa 24135m 1.5m/s 2m/s
11:00
94% 13°C 0mm 39% 0cm 51° 29°C 0mm 2.4kPa 24134m 1.4m/s 1.4m/s
12:00
91% 11°C 0mm 31% 0cm 57° 30°C 0mm 3kPa 24135m 1.6m/s 1.6m/s
13:00
89% 9.4°C 0mm 26% 0cm 60° 31°C 0mm 3.4kPa 24135m 1.8m/s 2.1m/s
14:00
85% 8.3°C 0mm 23% 0cm 59° 32°C 0mm 3.7kPa 24134m 2m/s 2.5m/s
15:00
80% 7.7°C 0mm 21% 0cm 54° 33°C 0mm 3.9kPa 24135m 2.1m/s 2.8m/s
16:00
76% 7.3°C 0mm 20% 0cm 46° 33°C 0mm 4kPa 24135m 1.9m/s 2.9m/s
17:00
72% 7.1°C 0mm 20% 0cm 38° 33°C 0mm 4kPa 24134m 1.7m/s 2.9m/s
18:00
69% 6.9°C 0mm 20% 0cm 28° 33°C 0mm 3.9kPa 24135m 1.8m/s 2.8m/s
19:00
65% 7°C 0mm 21% 0cm 19° 32°C 0mm 3.8kPa 24135m 2.1m/s 3.2m/s
20:00
57% 8.8°C 0mm 27% 0cm 10° 30°C 0mm 3kPa 24134m 5.1m/s 3.2m/s
21:00
48% 8.5°C 0mm 33% 0cm 2.5° 26°C 0mm 2.3kPa 24135m 4.2m/s 3.4m/s
22:00
40% 8.1°C 0mm 36% 0cm -4.8° 24°C 0mm 1.9kPa 24135m 5.6m/s 3.8m/s
23:00
37% 9.9°C 0mm 48% 0cm -10° 22°C 0mm 1.4kPa 24135m 8.9m/s 3.7m/s
Fri, Jul 10 Sunrise 05:00 Sunset 21:24
24:00
35% 11°C 0mm 55% 0cm -14° 20°C 0mm 1.1kPa 24135m 9.7m/s 4.2m/s
01:00
32% 11°C 0mm 56% 0cm -16° 20°C 0mm 1kPa 24135m 9.7m/s 4.6m/s
02:00
32% 11°C 0mm 59% 0cm -15° 19°C 0mm 0.88kPa 24135m 7.3m/s 4m/s
03:00
32% 11°C 0mm 66% 0cm -12° 18°C 0mm 0.68kPa 24135m 5.4m/s 3.5m/s
04:00
32% 12°C 0mm 73% 0cm -7.4° 17°C 0mm 0.52kPa 24134m 5.4m/s 3.5m/s
05:00
35% 13°C 0mm 81% 0cm -0.58° 16°C 0mm 0.35kPa 24135m 4.8m/s 3m/s
06:00
38% 13°C 0mm 79% 0cm 6.9° 17°C 0mm 0.4kPa 24134m 3.9m/s 2.6m/s
07:00
41% 13°C 0mm 65% 0cm 15° 20°C 0mm 0.81kPa 24135m 3m/s 2.3m/s
08:00
52% 13°C 0mm 52% 0cm 25° 23°C 0mm 1.3kPa 24134m 2.7m/s 2.2m/s
09:00
63% 13°C 0mm 45% 0cm 34° 26°C 0mm 1.8kPa 24134m 2.7m/s 2.2m/s
10:00
74% 13°C 0mm 40% 0cm 43° 28°C 0mm 2.3kPa 24135m 2.5m/s 2.3m/s
11:00
74% 13°C 0mm 35% 0cm 51° 30°C 0mm 2.7kPa 24134m 2.4m/s 2.5m/s
12:00
74% 12°C 0mm 31% 0cm 57° 32°C 0mm 3.2kPa 24134m 2.2m/s 2.5m/s
13:00
74% 12°C 0mm 27% 0cm 60° 33°C 0mm 3.8kPa 24134m 1.4m/s 1.6m/s
14:00
67% 11°C 0mm 23% 0cm 59° 35°C 0mm 4.3kPa 24135m 1.1m/s 0.67m/s
15:00
60% 10°C 0mm 22% 0cm 54° 35°C 0mm 4.5kPa 24134m 1.2m/s 0.32m/s
16:00
53% 9.3°C 0mm 21% 0cm 46° 35°C 0mm 4.5kPa 24134m 2.1m/s 1.3m/s
17:00
43% 8.9°C 0mm 21% 0cm 38° 35°C 0mm 4.3kPa 24135m 2.3m/s 2.4m/s
18:00
34% 10°C 0mm 24% 0cm 28° 33°C 0mm 3.9kPa 24135m 3.4m/s 3.5m/s
19:00
24% 13°C 0mm 37% 0cm 19° 29°C 0mm 2.5kPa 24135m 9.3m/s 5.4m/s
20:00
22% 14°C 0mm 51% 0cm 10° 25°C 0.02mm 1.6kPa 24135m 6.9m/s 4.3m/s
21:00
19% 14°C 0mm 64% 0cm 2.4° 21°C 0.04mm 0.87kPa 24135m 4.4m/s 3.2m/s
22:00
17% 13°C 0mm 78% 0cm -4.9° 17°C 0.06mm 0.41kPa 24135m 2m/s 2.1m/s
23:00
21% 13°C 0.007mm 77% 0cm -11° 17°C 0.1mm 0.44kPa 24135m 2.8m/s 2.3m/s
Sat, Jul 11 Sunrise 05:01 Sunset 21:23
24:00
25% 13°C 0.01mm 76% 0cm -14° 18°C 0.15mm 0.48kPa 24135m 3.6m/s 2.5m/s
01:00
29% 14°C 0.02mm 75% 0cm -16° 18°C 0.19mm 0.51kPa 24135m 4.3m/s 2.6m/s
02:00
43% 14°C 0.01mm 64% 0cm -15° 21°C 0.15mm 0.86kPa 24135m 4.9m/s 3.4m/s
03:00
56% 13°C 0.007mm 54% 0cm -12° 23°C 0.1mm 1.3kPa 24135m 5.4m/s 4.2m/s
04:00
70% 12°C 0mm 43% 0cm -7.5° 25°C 0.06mm 1.8kPa 24135m 5.9m/s 5m/s
05:00
71% 12°C 0mm 38% 0cm -0.75° 27°C 0.06mm 2.2kPa 24135m 5.9m/s 5.2m/s
06:00
72% 11°C 0mm 34% 0cm 6.8° 28°C 0.06mm 2.5kPa 24135m 5.9m/s 5.3m/s
07:00
73% 10°C 0mm 30% 0cm 15° 30°C 0.06mm 3kPa 24135m 5.8m/s 5.5m/s
08:00
77% 10°C 0mm 28% 0cm 24° 31°C 0.04mm 3.1kPa 24135m 5.7m/s 5.6m/s
09:00
81% 9.8°C 0mm 27% 0cm 34° 31°C 0.02mm 3.3kPa 24135m 5.6m/s 5.8m/s
10:00
85% 9.4°C 0mm 26% 0cm 43° 32°C 0mm 3.4kPa 24135m 5.5m/s 5.9m/s
11:00
83% 9.9°C 0mm 28% 0cm 51° 31°C 0mm 3.1kPa 24135m 6.1m/s 6.6m/s
12:00
81% 10°C 0mm 30% 0cm 57° 30°C 0mm 2.9kPa 24135m 6.7m/s 7.4m/s
13:00
79% 11°C 0mm 33% 0cm 60° 29°C 0mm 2.6kPa 24135m 7.2m/s 8.1m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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