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Rule Fog Hunter

Fog Hunter Forecast for Helsinki, Southern Finland

Helsingfors, Uusimaa, Finland

Granite shores, low Baltic islands, Suomenlinna’s fortifications, and neoclassical waterfront buildings give Helsinki varied maritime foregrounds.

Currently

Real-time conditions
Fog Probability
0%
Dewpoint Spread10.0°C
Visibility24135 (Clear)
Relative Humidity52%
Wind Speed2.6m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (95-hour forecast)

  • Fog Probability100% of hours

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Fog Hunter conditions across Southern Finland. The requirements and hourly values below show how those signals apply at Helsinki.

Explore Fog Hunter conditions across Southern Finland →

Recorded match history

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

Last 30 days
0
recorded matching windows
Last 90 days
6
recorded matching windows · 79% average confidence
Last 365 days
10
recorded matching windows · 82% average confidence
Most represented month

June, with 6 of 10 matches recorded in the last 365 days.

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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95-hour requirements breakdown

When available, the detailed table below covers only the stated 95-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 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/Helsinki
Fog Probability
≥ 75.0%
Mon, Aug 17
17:000%
18:000%
19:000%
20:000%
21:000%
22:000%
23:000%
Tue, Aug 18
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, Aug 19
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%
Thu, Aug 20
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%
Fri, Aug 21
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%
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/Helsinki
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
Tue, Aug 18 Sunrise 05:41 Sunset 21:05
17:00
3% 8.5°C 0mm 52% 0cm 29° 19°C 0mm 1kPa 24135m 3.7m/s 2.6m/s
18:00
5% 8.3°C 0mm 51% 0cm 22° 19°C 0mm 1.1kPa 24135m 2.4m/s 2m/s
19:00
7% 8.6°C 0mm 53% 0cm 14° 18°C 0mm 0.98kPa 24135m 2.3m/s 1.7m/s
20:00
9% 9.1°C 0mm 61% 0cm 6.9° 17°C 0mm 0.73kPa 24134m 1.4m/s 1.3m/s
21:00
11% 7.6°C 0mm 61% 0cm 0.33° 15°C 0mm 0.66kPa 24135m 2.3m/s 2.1m/s
22:00 ☾
16% 6.2°C 0mm 62% 0cm -6.3° 13°C 0mm 0.59kPa 24135m 6.5m/s 3m/s
23:00 ☾
21% 5.7°C 0mm 64% 0cm -11° 12°C 0mm 0.51kPa 24134m 6m/s 2.8m/s
Wed, Aug 19 Sunrise 05:41 Sunset 21:05
24:00 ☾
26% 5.8°C 0mm 68% 0cm -15° 11°C 0mm 0.43kPa 24134m 6.1m/s 2.8m/s
01:00 ☾
26% 6.2°C 0mm 74% 0cm -17° 11°C 0mm 0.34kPa 24135m 5.2m/s 2.6m/s
02:00 ☾
25% 6.6°C 0mm 78% 0cm -17° 10°C 0mm 0.27kPa 24135m 4.6m/s 2.6m/s
03:00 ☾
25% 6.9°C 0mm 82% 0cm -14° 9.8°C 0mm 0.22kPa 24134m 4.2m/s 2.5m/s
04:00 ☾
29% 7°C 0mm 84% 0cm -11° 9.5°C 0mm 0.19kPa 24134m 4.4m/s 2.5m/s
05:00 ☾
33% 7.1°C 0mm 86% 0cm -5.3° 9.3°C 0mm 0.17kPa 24135m 4.5m/s 2.6m/s
06:00
37% 7.1°C 0mm 88% 0cm 1.4° 9.1°C 0mm 0.14kPa 24134m 5.8m/s 2.8m/s
07:00
37% 7.2°C 0mm 83% 0cm 8.2° 10°C 0mm 0.21kPa 24134m 7.3m/s 3m/s
08:00
38% 7.6°C 0mm 72% 0cm 16° 12°C 0mm 0.4kPa 24134m 6.8m/s 3.4m/s
09:00
38% 7.5°C 0mm 61% 0cm 23° 15°C 0mm 0.65kPa 24135m 5.5m/s 3.2m/s
10:00
43% 7.2°C 0mm 53% 0cm 30° 17°C 0mm 0.89kPa 24135m 4.7m/s 3.3m/s
11:00
47% 6.5°C 0mm 47% 0cm 36° 18°C 0mm 1.1kPa 24134m 4.1m/s 3.2m/s
12:00
52% 5.6°C 0mm 41% 0cm 40° 19°C 0mm 1.3kPa 24134m 4m/s 3m/s
13:00
55% 5°C 0mm 38% 0cm 42° 20°C 0mm 1.4kPa 24135m 4.3m/s 3.3m/s
14:00
57% 5.1°C 0mm 38% 0cm 42° 20°C 0mm 1.5kPa 24134m 4.9m/s 3.7m/s
15:00
60% 5.7°C 0mm 38% 0cm 39° 20°C 0mm 1.5kPa 24135m 5.6m/s 4.4m/s
16:00
68% 6.1°C 0mm 40% 0cm 35° 20°C 0mm 1.4kPa 24134m 6.6m/s 5.5m/s
17:00
76% 6.3°C 0mm 42% 0cm 28° 20°C 0mm 1.3kPa 24134m 7.3m/s 6.3m/s
18:00
84% 5.5°C 0mm 40% 0cm 21° 19°C 0mm 1.3kPa 24135m 6.7m/s 5.5m/s
19:00
84% 5.2°C 0mm 41% 0cm 14° 19°C 0mm 1.3kPa 24135m 6.3m/s 4.8m/s
20:00
84% 4.6°C 0mm 45% 0cm 6.6° 17°C 0mm 1.1kPa 24134m 8.5m/s 4.6m/s
21:00
84% 4.5°C 0mm 53% 0cm 0.06° 14°C 0mm 0.75kPa 24134m 7.8m/s 3.2m/s
22:00 ☾
84% 4.6°C 0mm 60% 0cm -6.7° 12°C 0mm 0.57kPa 24134m 8m/s 3m/s
23:00 ☾
85% 4.9°C 0mm 66% 0cm -12° 11°C 0mm 0.46kPa 24134m 7.1m/s 2.9m/s
Thu, Aug 20 Sunrise 05:43 Sunset 21:02
24:00 ☾
85% 5.3°C 0mm 70% 0cm -15° 10°C 0mm 0.38kPa 24134m 6.6m/s 2.8m/s
01:00 ☾
79% 5.5°C 0mm 74% 0cm -17° 9.9°C 0mm 0.32kPa 24135m 6.3m/s 2.7m/s
02:00 ☾
74% 5.4°C 0mm 76% 0cm -17° 9.5°C 0mm 0.29kPa 24134m 5.7m/s 2.6m/s
03:00 ☾
68% 5.5°C 0mm 77% 0cm -15° 9.3°C 0mm 0.27kPa 24135m 4.5m/s 2.5m/s
04:00 ☾
55% 5.4°C 0mm 78% 0cm -11° 9°C 0mm 0.26kPa 24134m 3.3m/s 2.3m/s
05:00 ☾
41% 5.3°C 0mm 78% 0cm -5.5° 8.9°C 0mm 0.25kPa 24134m 2m/s 1.9m/s
06:00
28% 5°C 0mm 78% 0cm 1.2° 8.6°C 0mm 0.24kPa 24134m 1.6m/s 1.6m/s
07:00
26% 5.2°C 0mm 73% 0cm 8° 9.8°C 0mm 0.33kPa 24134m 1.3m/s 1.3m/s
08:00
24% 5.1°C 0mm 62% 0cm 15° 12°C 0mm 0.53kPa 24135m 1.4m/s 1m/s
09:00
22% 4.8°C 0mm 53% 0cm 23° 14°C 0mm 0.77kPa 24134m 1.1m/s 0.92m/s
10:00
20% 4.5°C 0mm 46% 0cm 30° 16°C 0mm 0.99kPa 24134m 0.73m/s 0.74m/s
11:00
17% 4.4°C 0mm 43% 0cm 35° 17°C 0mm 1.1kPa 24134m 0.8m/s 1.3m/s
12:00
15% 4.5°C 0mm 41% 0cm 40° 18°C 0mm 1.2kPa 24134m 1.3m/s 2m/s
13:00
14% 4.8°C 0mm 40% 0cm 42° 18°C 0mm 1.3kPa 24135m 2.7m/s 3.1m/s
14:00
14% 4.9°C 0.01mm 42% 0cm 42° 18°C 0mm 1.2kPa 24135m 3.4m/s 3.5m/s
15:00
13% 7°C 0.5mm 57% 0cm 39° 15°C 0.19mm 0.75kPa 21255m 5.3m/s 4m/s
16:00
18% 11°C 0.6mm 88% 0cm 34° 13°C 0.69mm 0.18kPa 15050m 5.5m/s 2.7m/s
17:00
23% 12°C 0.33mm 93% 0cm 28° 13°C 1.1mm 0.11kPa 22474m 4.5m/s 2m/s
18:00
28% 12°C 1.5mm 93% 0cm 21° 13°C 1.9mm 0.1kPa 8090m 4.4m/s 2.1m/s
19:00
30% 12°C 1.3mm 96% 0cm 14° 13°C 3.4mm 0.07kPa 11038m 3.6m/s 1.8m/s
20:00
32% 12°C 0.17mm 95% 0cm 6.3° 13°C 4.2mm 0.07kPa 24135m 3m/s 1.8m/s
21:00 ☾
34% 12°C 0.08mm 96% 0cm -0.42° 13°C 4.3mm 0.05kPa 24134m 4m/s 2.4m/s
22:00 ☾
42% 12°C 0.05mm 90% 0cm -7° 13°C 2.9mm 0.16kPa 24134m 4m/s 2.6m/s
23:00 ☾
50% 11°C 0.03mm 83% 0cm -12° 14°C 1.4mm 0.27kPa 24135m 3.9m/s 2.8m/s
Fri, Aug 21 Sunrise 05:45 Sunset 20:59
24:00 ☾
58% 10°C 0mm 76% 0cm -16° 14°C 0mm 0.39kPa 24135m 3.9m/s 3m/s
01:00 ☾
60% 11°C 0mm 78% 0cm -17° 14°C 0.02mm 0.35kPa 24135m 5.4m/s 4.6m/s
02:00 ☾
63% 11°C 0mm 81% 0cm -17° 15°C 0.04mm 0.32kPa 24135m 6.9m/s 6.1m/s
03:00 ☾
65% 12°C 0mm 83% 0cm -15° 15°C 0.06mm 0.29kPa 24135m 8.3m/s 7.7m/s
04:00 ☾
64% 12°C 0mm 83% 0cm -11° 15°C 0.33mm 0.28kPa 20430m 8.6m/s 7.8m/s
05:00 ☾
62% 12°C 0mm 84% 0cm -5.8° 15°C 0.6mm 0.28kPa 16726m 8.9m/s 8m/s
06:00
61% 13°C 0mm 84% 0cm 0.93° 15°C 0.88mm 0.28kPa 13021m 9.2m/s 8.1m/s
07:00
59% 13°C 1.4mm 86% 0cm 7.7° 15°C 3.2mm 0.23kPa 10285m 8.6m/s 7.6m/s
08:00
58% 13°C 2.8mm 89% 0cm 15° 15°C 5.6mm 0.19kPa 7548m 7.9m/s 7.1m/s
09:00
56% 13°C 4.2mm 91% 0cm 22° 14°C 7.9mm 0.14kPa 4812m 7.2m/s 6.6m/s
10:00
53% 13°C 2.8mm 90% 0cm 29° 14°C 6.7mm 0.16kPa 11253m 6.1m/s 5.7m/s
11:00
50% 12°C 1.4mm 89% 0cm 35° 14°C 5.5mm 0.17kPa 17694m 4.9m/s 4.7m/s
12:00
47% 12°C 0.06mm 88% 0cm 39° 14°C 4.3mm 0.19kPa 24135m 3.7m/s 3.8m/s
13:00
45% 12°C 0.12mm 87% 0cm 42° 15°C 4.5mm 0.22kPa 23138m 4.9m/s 4.3m/s
14:00
42% 13°C 0.18mm 85% 0cm 41° 15°C 4.6mm 0.25kPa 22140m 6.1m/s 4.9m/s
15:00
40% 13°C 0.24mm 84% 0cm 39° 16°C 4.8mm 0.29kPa 21143m 7.3m/s 5.5m/s
16:00
43% 13°C 0.17mm 84% 0cm 34° 16°C 3.3mm 0.29kPa 22140m 7m/s 5.3m/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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