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Rule Fog Hunter

Fog Hunter Forecast for Guildford, London & Southeast England

Guildford, England, United Kingdom

Guildford's River Wey, historic High Street, and castle grounds sit near wooded Surrey Hills and chalk downs suited to layered rural views.

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread6.8°C
Visibility24135 (Clear)
Relative Humidity64%
Wind Speed4.4m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (85-hour forecast)

  • Fog Probability100% of hours

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Fog Hunter conditions across London & Southeast England. The requirements and hourly values below show how those signals apply at Guildford.

Explore Fog Hunter conditions across London & Southeast England →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Guildford during the last 365 days.

Last 30 days
0
recorded matching windows
Last 90 days
2
recorded matching windows · 82% average confidence
Last 365 days
2
recorded matching windows · 82% average confidence

Only 2 completed matches are recorded in the last 365 days—insufficient history to identify a reliable typical start time or month.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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85-hour requirements breakdown

When available, the detailed table below covers only the stated 85-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the next 14 days, so this table does not explain that entire 14-day period.

What passed or failed, hour by hour
0matching hours in the next 85 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Fog Probability
≥ 75.0%
Sat, Aug 22
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%
Sun, Aug 23
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%
Mon, Aug 24
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, Aug 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%
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
Sat, Aug 22 Sunrise 05:59 Sunset 20:09
21:00 ☾
16% 8°C 0mm 64% 0cm -7.9° 15°C 0mm 0.62kPa 24135m 7.5m/s 4.4m/s
22:00 ☾
6% 8.5°C 0mm 65% 0cm -16° 15°C 0mm 0.6kPa 24135m 7.2m/s 3.9m/s
23:00 ☾
4% 8.5°C 0mm 72% 0cm -22° 13°C 0mm 0.42kPa 24134m 4.2m/s 2.7m/s
Sun, Aug 23 Sunrise 05:59 Sunset 20:09
24:00 ☾
3% 8.5°C 0mm 78% 0cm -26° 12°C 0mm 0.31kPa 24134m 1.9m/s 1.9m/s
01:00 ☾
1% 8.6°C 0mm 81% 0cm -27° 12°C 0mm 0.26kPa 24134m 2.2m/s 2.2m/s
02:00 ☾
1% 8.7°C 0mm 86% 0cm -26° 11°C 0mm 0.18kPa 24134m 2m/s 2.1m/s
03:00 ☾
2% 8.6°C 0mm 87% 0cm -22° 11°C 0mm 0.17kPa 24134m 1.7m/s 1.7m/s
04:00 ☾
2% 8.4°C 0mm 87% 0cm -17° 10°C 0mm 0.16kPa 24134m 1.5m/s 1.6m/s
05:00 ☾
1% 8.4°C 0mm 88% 0cm -9.4° 10°C 0mm 0.15kPa 24134m 1.4m/s 1.4m/s
06:00 ☾
1% 8.4°C 0mm 88% 0cm -0.65° 10°C 0mm 0.15kPa 24135m 1.4m/s 1.5m/s
07:00
0% 8.6°C 0mm 82% 0cm 8.2° 12°C 0mm 0.25kPa 24135m 1.1m/s 1.1m/s
08:00
12% 8.6°C 0mm 67% 0cm 18° 15°C 0mm 0.55kPa 24135m 1.3m/s 1.1m/s
09:00
25% 8.2°C 0mm 56% 0cm 27° 17°C 0mm 0.87kPa 24134m 1.6m/s 1.5m/s
10:00
37% 7.8°C 0mm 48% 0cm 35° 19°C 0mm 1.1kPa 24134m 1.6m/s 1.7m/s
11:00
33% 7.3°C 0mm 42% 0cm 43° 21°C 0mm 1.4kPa 24134m 1.7m/s 1.7m/s
12:00
29% 6.6°C 0mm 37% 0cm 48° 22°C 0mm 1.6kPa 24135m 1.9m/s 1.9m/s
13:00
25% 5.6°C 0mm 33% 0cm 50° 23°C 0mm 1.8kPa 24135m 2.2m/s 2.5m/s
14:00
26% 4.9°C 0mm 30% 0cm 49° 23°C 0mm 2kPa 24135m 2.6m/s 3.3m/s
15:00
28% 4.5°C 0mm 28% 0cm 44° 24°C 0mm 2.1kPa 24134m 3.1m/s 4m/s
16:00
29% 4.2°C 0mm 28% 0cm 37° 24°C 0mm 2.1kPa 24135m 3.3m/s 4.3m/s
17:00
33% 4.1°C 0mm 28% 0cm 28° 24°C 0mm 2.1kPa 24135m 3.1m/s 3.6m/s
18:00
36% 4.3°C 0mm 30% 0cm 19° 23°C 0mm 2kPa 24134m 2.1m/s 1.6m/s
19:00
40% 7.8°C 0mm 44% 0cm 9.6° 21°C 0mm 1.4kPa 24135m 4.8m/s 4.2m/s
20:00
45% 8.6°C 0mm 60% 0cm 0.76° 16°C 0mm 0.76kPa 24134m 8.6m/s 4.8m/s
21:00 ☾
50% 8.3°C 0mm 68% 0cm -8.2° 14°C 0mm 0.52kPa 24134m 9.5m/s 4.2m/s
22:00 ☾
55% 8.5°C 0mm 76% 0cm -16° 13°C 0mm 0.34kPa 24134m 7.1m/s 3.3m/s
23:00 ☾
54% 8.3°C 0mm 80% 0cm -22° 12°C 0mm 0.28kPa 24134m 3.7m/s 2.7m/s
Mon, Aug 24 Sunrise 06:01 Sunset 20:07
24:00 ☾
53% 8.3°C 0mm 81% 0cm -26° 12°C 0mm 0.26kPa 24134m 4.6m/s 2.8m/s
01:00 ☾
52% 8.5°C 0mm 82% 0cm -28° 12°C 0mm 0.25kPa 24134m 4.7m/s 2.9m/s
02:00 ☾
56% 8.8°C 0mm 83% 0cm -26° 12°C 0mm 0.23kPa 24134m 5.1m/s 2.9m/s
03:00 ☾
59% 8.9°C 0mm 84% 0cm -23° 12°C 0mm 0.22kPa 24134m 3.8m/s 2.8m/s
04:00 ☾
63% 8.9°C 0mm 86% 0cm -17° 11°C 0mm 0.19kPa 24135m 3.9m/s 2.8m/s
05:00 ☾
61% 8.9°C 0mm 86% 0cm -9.6° 11°C 0mm 0.18kPa 24134m 5.3m/s 3m/s
06:00 ☾
58% 8.8°C 0mm 86% 0cm -0.95° 11°C 0mm 0.18kPa 24134m 5.3m/s 3.1m/s
07:00
56% 9°C 0mm 79% 0cm 8° 12°C 0mm 0.3kPa 24134m 9m/s 2.7m/s
08:00
44% 9.2°C 0mm 65% 0cm 17° 16°C 0mm 0.61kPa 24134m 9.7m/s 4.5m/s
09:00
32% 9.6°C 0mm 60% 0cm 26° 17°C 0mm 0.79kPa 24135m 9.4m/s 6.5m/s
10:00
20% 8.5°C 0mm 50% 0cm 35° 19°C 0mm 1.1kPa 24135m 8.9m/s 7m/s
11:00
17% 7.1°C 0mm 42% 0cm 42° 20°C 0mm 1.4kPa 24134m 8.3m/s 6.6m/s
12:00
13% 6.1°C 0mm 37% 0cm 48° 21°C 0mm 1.6kPa 24134m 8.3m/s 6.9m/s
13:00
10% 5.8°C 0mm 35% 0cm 50° 22°C 0mm 1.7kPa 24134m 8.4m/s 7.1m/s
14:00
8% 6°C 0mm 36% 0cm 48° 22°C 0mm 1.7kPa 24134m 8.4m/s 7.5m/s
15:00
6% 6.1°C 0mm 36% 0cm 43° 22°C 0mm 1.7kPa 24135m 8.3m/s 7.4m/s
16:00
4% 6.5°C 0mm 36% 0cm 36° 22°C 0mm 1.7kPa 24134m 8.4m/s 7.5m/s
17:00
3% 7.7°C 0mm 41% 0cm 28° 22°C 0mm 1.5kPa 24135m 8.7m/s 7.6m/s
18:00
3% 8.9°C 0mm 48% 0cm 19° 20°C 0mm 1.3kPa 24134m 8.3m/s 6.9m/s
19:00
2% 9.9°C 0mm 55% 0cm 9.3° 19°C 0mm 1kPa 24135m 8.5m/s 5.6m/s
20:00
6% 11°C 0mm 67% 0cm 0.49° 17°C 0mm 0.64kPa 24134m 9.9m/s 5.1m/s
21:00 ☾
10% 12°C 0mm 75% 0cm -8.6° 16°C 0mm 0.46kPa 24134m 13m/s 5.7m/s
22:00 ☾
14% 12°C 0mm 78% 0cm -16° 16°C 0mm 0.39kPa 24134m 14m/s 5.8m/s
23:00 ☾
11% 13°C 0mm 81% 0cm -22° 16°C 0mm 0.36kPa 24135m 13m/s 5.4m/s
Tue, Aug 25 Sunrise 06:02 Sunset 20:05
24:00 ☾
9% 13°C 0mm 80% 0cm -26° 16°C 0mm 0.37kPa 24134m 13m/s 5.4m/s
01:00 ☾
6% 13°C 0mm 82% 0cm -28° 16°C 0mm 0.35kPa 24134m 13m/s 5.8m/s
02:00 ☾
5% 12°C 0mm 69% 0cm -27° 18°C 0mm 0.65kPa 24134m 12m/s 6.1m/s
03:00 ☾
5% 11°C 0mm 57% 0cm -23° 20°C 0mm 1kPa 24134m 10m/s 6.4m/s
04:00 ☾
4% 8.9°C 0mm 44% 0cm -17° 22°C 0mm 1.4kPa 24135m 8.8m/s 6.6m/s
05:00 ☾
5% 8.6°C 0mm 39% 0cm -9.9° 23°C 0mm 1.7kPa 24135m 7.9m/s 6.2m/s
06:00 ☾
6% 8.1°C 0mm 34% 0cm -1.2° 25°C 0mm 2.1kPa 24135m 7m/s 5.8m/s
07:00
7% 7.3°C 0mm 30% 0cm 7.8° 27°C 0mm 2.4kPa 24135m 6.1m/s 5.4m/s
08:00
8% 7.6°C 0mm 31% 0cm 17° 26°C 0mm 2.3kPa 24135m 6m/s 5.4m/s
09:00
10% 8°C 0mm 33% 0cm 26° 26°C 0mm 2.2kPa 24135m 5.9m/s 5.5m/s
10:00
11% 8.3°C 0mm 34% 0cm 35° 25°C 0mm 2.1kPa 24135m 5.8m/s 5.5m/s
11:00
11% 9.2°C 0mm 40% 0cm 42° 24°C 0mm 1.8kPa 24135m 5m/s 4.4m/s
12:00
10% 9.9°C 0mm 45% 0cm 47° 23°C 0mm 1.5kPa 24135m 4.2m/s 3.3m/s
13:00
10% 10°C 0mm 50% 0cm 49° 21°C 0mm 1.3kPa 24135m 3.4m/s 2.2m/s
14:00
10% 11°C 0mm 56% 0cm 48° 20°C 0mm 1kPa 24135m 3.3m/s 2.2m/s
15:00
9% 12°C 0mm 63% 0cm 43° 19°C 0mm 0.84kPa 24135m 3.2m/s 2.1m/s
16:00
9% 13°C 0mm 69% 0cm 36° 19°C 0mm 0.66kPa 24135m 3m/s 2.1m/s
17:00
9% 13°C 0mm 75% 0cm 27° 18°C 0mm 0.51kPa 24135m 2.3m/s 1.7m/s
18:00
10% 14°C 0mm 81% 0cm 18° 17°C 0mm 0.37kPa 24135m 1.6m/s 1.3m/s
19:00
10% 14°C 0mm 86% 0cm 9° 16°C 0mm 0.25kPa 24135m 0.84m/s 0.88m/s
20:00
9% 14°C 0mm 85% 0cm 0.22° 17°C 0mm 0.29kPa 24135m 0.94m/s 0.95m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

How opportunities work → Weather data sources →
Forecast generated

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