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Rule Fog Hunter

London - Fog Hunter - London & Southeast England

London, 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 Spread17.7°C
Visibility24135 (Clear)
Relative Humidity34%
Wind Speed0.9m/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 the Thames Valley fog and coastal mist that create atmospheric conditions across London and Southeast England. We combine humidity, temperature, and local topography to predict when fog will transform familiar locations into moody, cinematic scenes.

London's relationship with fog is legendary—the Victorian "pea soupers" may be gone, but Thames fog still creates magical photography conditions. The river acts as a fog generator, with mist rolling across the city at dawn. Meanwhile, the North and South Downs create valley fog conditions in rural Kent, Sussex, and Surrey.

What makes Southeast England fog photography exceptional:

  • Thames fog - River mist at dawn creates moody silhouettes of Tower Bridge, St Paul's, and the Shard
  • North Downs mist - Rolling chalk hills develop valley fog that creates layered landscapes
  • South Downs valleys - Morning mist in river valleys with the Seven Sisters and Beachy Head emerging above
  • Autumn intensity - September through November brings the most reliable fog conditions as land cools

Best conditions occur at dawn along the Thames between September and November. Elevated viewpoints like Greenwich Park or Primrose Hill offer views across fog-shrouded London. In the countryside, Box Hill and Devil's Dyke provide classic chalk downland fog compositions.

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72-hour requirements breakdown

What passed or failed, hour by hour
0matching hours in the next 79 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Fog Probability
≥ 75.0%
Sun, May 24
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%
Mon, May 25
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%
Tue, May 26
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%
Wed, May 27
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%
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
Sun, May 24 Sunrise 04:57 Sunset 20:58
14:00
92% 12°C 0mm 34% 0cm 57° 30°C 0mm 2.8kPa 24135m 1.4m/s 0.85m/s
15:00
96% 12°C 0mm 32% 0cm 51° 30°C 0mm 2.9kPa 24135m 1.9m/s 1.6m/s
16:00
100% 12°C 0mm 32% 0cm 43° 30°C 0mm 2.9kPa 24134m 2.1m/s 2m/s
17:00
100% 12°C 0mm 33% 0cm 34° 30°C 0mm 2.8kPa 24134m 1.7m/s 2m/s
18:00
100% 13°C 0mm 38% 0cm 25° 29°C 0mm 2.5kPa 24134m 1.2m/s 1.7m/s
19:00
100% 15°C 0mm 47% 0cm 16° 27°C 0mm 1.9kPa 24134m 2.8m/s 2.8m/s
20:00
100% 15°C 0mm 56% 0cm 7.1° 25°C 0mm 1.4kPa 24135m 4.2m/s 3.4m/s
21:00
100% 15°C 0mm 61% 0cm -0.67° 23°C 0mm 1.1kPa 24134m 4.5m/s 2.7m/s
22:00
100% 14°C 0mm 62% 0cm -7.8° 22°C 0mm 0.97kPa 24135m 4m/s 2.1m/s
23:00
100% 14°C 0mm 64% 0cm -13° 21°C 0mm 0.89kPa 24134m 3.6m/s 1.9m/s
Mon, May 25 Sunrise 04:57 Sunset 20:58
24:00
100% 14°C 0mm 65% 0cm -16° 20°C 0mm 0.82kPa 24135m 3.5m/s 1.8m/s
01:00
100% 13°C 0mm 67% 0cm -18° 20°C 0mm 0.75kPa 24135m 3.3m/s 1.7m/s
02:00
100% 13°C 0mm 68% 0cm -16° 19°C 0mm 0.69kPa 24135m 3.2m/s 1.7m/s
03:00
99% 13°C 0mm 70% 0cm -13° 19°C 0mm 0.64kPa 24135m 2.6m/s 1.6m/s
04:00
99% 13°C 0mm 71% 0cm -7.2° 18°C 0mm 0.6kPa 24135m 1.8m/s 1.4m/s
05:00
99% 13°C 0mm 72% 0cm 0.23° 18°C 0mm 0.58kPa 24134m 1.4m/s 1.4m/s
06:00
99% 13°C 0mm 70% 0cm 7.9° 18°C 0mm 0.62kPa 24134m 2.3m/s 1.6m/s
07:00
99% 13°C 0mm 64% 0cm 17° 20°C 0mm 0.84kPa 24134m 2.8m/s 1.8m/s
08:00
99% 13°C 0mm 56% 0cm 26° 22°C 0mm 1.1kPa 24135m 2.7m/s 1.9m/s
09:00
100% 13°C 0mm 50% 0cm 35° 24°C 0mm 1.5kPa 24134m 2.9m/s 2m/s
10:00
100% 13°C 0mm 46% 0cm 44° 26°C 0mm 1.8kPa 24135m 3.1m/s 2.3m/s
11:00
100% 14°C 0mm 43% 0cm 52° 28°C 0mm 2.1kPa 24135m 3m/s 2.5m/s
12:00
100% 14°C 0mm 40% 0cm 58° 29°C 0mm 2.4kPa 24134m 3.1m/s 2.7m/s
13:00
100% 14°C 0mm 37% 0cm 60° 30°C 0mm 2.7kPa 24135m 3.1m/s 2.9m/s
14:00
100% 14°C 0mm 35% 0cm 57° 31°C 0mm 2.9kPa 24134m 3.3m/s 3.2m/s
15:00
100% 14°C 0mm 35% 0cm 51° 31°C 0mm 3kPa 24134m 3.4m/s 3.6m/s
16:00
100% 14°C 0mm 35% 0cm 43° 31°C 0mm 3kPa 24134m 3.4m/s 3.9m/s
17:00
100% 14°C 0mm 35% 0cm 34° 31°C 0mm 2.9kPa 24134m 3.3m/s 3.8m/s
18:00
99% 14°C 0mm 37% 0cm 25° 30°C 0mm 2.6kPa 24135m 3.4m/s 3.7m/s
19:00
99% 14°C 0mm 41% 0cm 16° 29°C 0mm 2.3kPa 24134m 3.7m/s 3.6m/s
20:00
97% 15°C 0mm 48% 0cm 7.3° 27°C 0mm 1.8kPa 24135m 4.9m/s 2.9m/s
21:00
96% 15°C 0mm 58% 0cm -0.44° 24°C 0mm 1.3kPa 24134m 4.9m/s 2.3m/s
22:00
94% 15°C 0mm 63% 0cm -7.6° 23°C 0mm 1kPa 24135m 4.9m/s 2m/s
23:00
94% 15°C 0mm 66% 0cm -13° 22°C 0mm 0.88kPa 24134m 4.1m/s 1.6m/s
Tue, May 26 Sunrise 04:56 Sunset 20:59
24:00
94% 15°C 0mm 68% 0cm -16° 21°C 0mm 0.8kPa 24134m 4.1m/s 1.6m/s
01:00
94% 15°C 0mm 69% 0cm -17° 21°C 0mm 0.76kPa 24135m 2.7m/s 1.5m/s
02:00
96% 14°C 0mm 68% 0cm -16° 20°C 0mm 0.76kPa 24134m 1.4m/s 1.3m/s
03:00
97% 13°C 0mm 67% 0cm -13° 20°C 0mm 0.76kPa 24135m 1.2m/s 1.2m/s
04:00
99% 13°C 0mm 67% 0cm -7.1° 19°C 0mm 0.73kPa 24134m 1.1m/s 1.1m/s
05:00
99% 13°C 0mm 69% 0cm 0.34° 19°C 0mm 0.67kPa 24134m 1.2m/s 1.2m/s
06:00
98% 13°C 0mm 69% 0cm 19°C 0mm 0.68kPa 24134m 1.6m/s 1.3m/s
07:00
98% 14°C 0mm 63% 0cm 17° 21°C 0mm 0.92kPa 24135m 2.1m/s 1.2m/s
08:00
99% 14°C 0mm 54% 0cm 26° 23°C 0mm 1.3kPa 24134m 2.2m/s 1.3m/s
09:00
99% 13°C 0mm 46% 0cm 35° 25°C 0mm 1.7kPa 24135m 2.6m/s 1.6m/s
10:00
100% 12°C 0mm 39% 0cm 44° 27°C 0mm 2.2kPa 24134m 2.8m/s 1.9m/s
11:00
100% 11°C 0mm 33% 0cm 52° 29°C 0mm 2.7kPa 24135m 2.8m/s 2.2m/s
12:00
100% 9.9°C 0mm 28% 0cm 58° 30°C 0mm 3.1kPa 24134m 2.8m/s 2.4m/s
13:00
100% 9.3°C 0mm 26% 0cm 60° 31°C 0mm 3.4kPa 24134m 2.7m/s 2.7m/s
14:00
99% 8.8°C 0mm 24% 0cm 57° 32°C 0mm 3.6kPa 24134m 2.5m/s 2.9m/s
15:00
99% 8.5°C 0mm 23% 0cm 51° 32°C 0mm 3.7kPa 24135m 2m/s 3.1m/s
16:00
98% 8.7°C 0mm 24% 0cm 44° 32°C 0mm 3.6kPa 24135m 1.9m/s 3.2m/s
17:00
96% 9.4°C 0mm 26% 0cm 35° 32°C 0mm 3.4kPa 24134m 2.4m/s 3.1m/s
18:00
94% 11°C 0mm 29% 0cm 25° 31°C 0mm 3.1kPa 24135m 2m/s 3m/s
19:00
92% 11°C 0mm 33% 0cm 16° 29°C 0mm 2.6kPa 24134m 2.9m/s 3.1m/s
20:00
88% 12°C 0mm 44% 0cm 7.4° 25°C 0mm 1.8kPa 24134m 4.3m/s 3.2m/s
21:00
85% 12°C 0mm 55% 0cm -0.19° 21°C 0mm 1.1kPa 24135m 5.8m/s 3.4m/s
22:00
81% 11°C 0mm 66% 0cm -7.5° 17°C 0mm 0.68kPa 24135m 7.2m/s 3.5m/s
23:00
80% 12°C 0mm 69% 0cm -13° 17°C 0mm 0.59kPa 24135m 7.2m/s 3.8m/s
Wed, May 27 Sunrise 04:55 Sunset 21:00
24:00
80% 12°C 0mm 73% 0cm -16° 17°C 0mm 0.52kPa 24135m 7.1m/s 4.1m/s
01:00
79% 13°C 0mm 77% 0cm -17° 17°C 0mm 0.44kPa 24135m 7.1m/s 4.4m/s
02:00
82% 13°C 0mm 70% 0cm -16° 18°C 0mm 0.62kPa 24135m 6.9m/s 4.6m/s
03:00
86% 13°C 0mm 64% 0cm -12° 20°C 0mm 0.83kPa 24135m 6.7m/s 4.7m/s
04:00
89% 13°C 0mm 58% 0cm -6.9° 21°C 0mm 1.1kPa 24135m 6.5m/s 4.9m/s
05:00
89% 13°C 0mm 54% 0cm 0.45° 22°C 0mm 1.3kPa 24135m 6.5m/s 5.2m/s
06:00
89% 12°C 0mm 50% 0cm 8.2° 23°C 0mm 1.4kPa 24135m 6.4m/s 5.4m/s
07:00
89% 12°C 0mm 46% 0cm 17° 25°C 0mm 1.7kPa 24135m 6.3m/s 5.7m/s
08:00
86% 11°C 0mm 44% 0cm 26° 24°C 0mm 1.7kPa 24135m 6.4m/s 5.8m/s
09:00
84% 11°C 0mm 43% 0cm 35° 24°C 0mm 1.7kPa 24135m 6.5m/s 5.8m/s
10:00
81% 10°C 0mm 42% 0cm 44° 24°C 0mm 1.7kPa 24135m 6.6m/s 5.9m/s
11:00
82% 9°C 0mm 42% 0cm 52° 23°C 0mm 1.6kPa 24135m 7.1m/s 5.8m/s
12:00
84% 8.1°C 0mm 42% 0cm 58° 21°C 0mm 1.5kPa 24135m 7.6m/s 5.7m/s
13:00
85% 7.1°C 0mm 42% 0cm 60° 20°C 0mm 1.4kPa 24135m 8.1m/s 5.6m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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