What conditions does Fog Hunter look for?

Fog Probability: ≥ 85.0%. Dewpoint Spread: ≤ 2.0°C. Visibility: ≤ 3000.0m. Wind Speed: ≤ 2.0m/s

How often do conditions match?

There are 4 upcoming opportunity windows in the next 10 days.

More Fog Hunter in Southern Finland

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Rule Fog Hunter

Punkaharju - Fog Hunter - Southern Finland

Punkaharju, South Savo, Finland

Thick, moody fog for atmospheric forest and landscape shots

Currently

Real-time conditions

Fog Probability

97%

Dewpoint Spread0.0°C

Visibility3013 (Mist/Haze)

Relative Humidity100%

Wind Speed2.2m/s (calm conditions)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki

Next opportunity

Dense Fog (lingering)

Punkaharju

Today · 05:00–06:00 · 1h window

Medium confidence

69%

🌫️Fog Probability97.2%

Dewpoint Spread: 0.0°C

Visibility: 2080 (Mist/Haze)

Relative Humidity: 100%

Wind Speed: 1.7m/s (calm conditions)

Dense Fog (lingering) at Dawn

Punkaharju

Today · 06:00–07:00

🌫️Fog Probability:100%

High

Dense Fog (lingering) at Sunrise

Punkaharju

Today · 07:00–09:00

🌫️Fog Probability:94.4%

Medium

Dense Fog (lingering)

Punkaharju

Today · 09:00–10:00

🌫️Fog Probability:91.7%

Medium

What this forecast looks for

Plain-language explanation from the rule

Southern Finland's lake district and boreal forests create ideal conditions for fog photography. The region's 188,000 lakes, countless bogs, and mixed forests generate reliable morning mist from late summer through autumn.

What makes Southern Finland special for fog photography:

Lake fog - Large lakes like Vesijärvi and Saimaa produce dramatic ground fog at dawn
Bog mist - Torronsuo and other wetlands create ethereal low-lying fog over boardwalks
Forest atmosphere - Nuuksio and Repovesi offer misty woodland scenes with cliff viewpoints
Accessibility - Most locations within 2 hours of Helsinki

Peak fog season runs from August through October, with the strongest conditions occurring on calm, clear nights when temperatures drop near the dewpoint. Arrive before sunrise for the most dramatic mist.

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72-hour requirements breakdown

What passed or failed, hour by hour

5matching hours in the next 95 hoursJump to next match

AND logic: all conditions required

Meets requirement

Misses requirement

Time Europe/Helsinki	Fog Probability ≥ 85.0%	Dewpoint Spread ≤ 2.0°C	Visibility ≤ 3000.0m	Wind Speed ≤ 2.0m/s
Sun, Feb 15
03:00	60%	0.8°C	24135m	1.8m/s
04:00	60%	0.8°C	24135m	2m/s
05:00	60%	0.8°C	24135m	2.1m/s
06:00	60%	0.6°C	24135m	2.1m/s
07:00	60%	0.7°C	24135m	2.4m/s
08:00	60%	0.8°C	24134m	2.7m/s
09:00	0%	1.1°C	24134m	2.8m/s
10:00	0%	1.6°C	24134m	2.9m/s
11:00	0%	2°C	24134m	3.2m/s
12:00	0%	2.2°C	24134m	3.4m/s
13:00	0%	2.4°C	24134m	3.5m/s
14:00	0%	2.1°C	24134m	3.3m/s
15:00	0%	1.8°C	24135m	3.1m/s
16:00	0%	1.2°C	24135m	2.8m/s
17:00	64%	0.5°C	24135m	2.3m/s
18:00	67%	0.4°C	24134m	2.8m/s
19:00	67%	0.4°C	23567m	2.9m/s
20:00	83%	0.3°C	7816m	2.8m/s
21:00	86%	0.2°C	5766m	2.7m/s
22:00	97%	0.2°C	4967m	2.6m/s
23:00	97%	0.1°C	4544m	2.4m/s
Mon, Feb 16
24:00	97%	0.1°C	4194m	2.3m/s
01:00	97%	0°C	3798m	2.2m/s
02:00	97%	0°C	3136m	2.1m/s
03:00	97%	0°C	2447m	2.3m/s
04:00	97%	0°C	3013m	2.2m/s
05:00	97%	0°C	2080m	1.7m/s
06:00	100%	0°C	1995m	1.8m/s
07:00	94%	0.3°C	2081m	1.6m/s
08:00	94%	0.5°C	2187m	1.9m/s
09:00	92%	0.6°C	2711m	1.9m/s
10:00	88%	0.7°C	3147m	1.8m/s
11:00	88%	1°C	4167m	1.2m/s
12:00	0%	1°C	9001m	1.3m/s
13:00	0%	1°C	15145m	1.4m/s
14:00	60%	0.8°C	17837m	1.4m/s
15:00	64%	0.5°C	22620m	1.2m/s
16:00	83%	0.2°C	6556m	1.1m/s
17:00	86%	0.1°C	6547m	1.6m/s
18:00	86%	0°C	6548m	1.5m/s
19:00	86%	0°C	6546m	1.8m/s
20:00	86%	0.1°C	7320m	1.8m/s
21:00	86%	0.1°C	6593m	1.9m/s
22:00	86%	0.1°C	6558m	1.9m/s
23:00	86%	0.2°C	6545m	1.7m/s
Tue, Feb 17
24:00	86%	0.1°C	6545m	1.8m/s
01:00	86%	0.1°C	6544m	1.7m/s
02:00	86%	0.1°C	6545m	1.8m/s
03:00	86%	0°C	6282m	1.8m/s
04:00	86%	0°C	6544m	1.9m/s
05:00	86%	0°C	6544m	2.1m/s
06:00	86%	0.1°C	6544m	2.1m/s
07:00	86%	0.1°C	6552m	2m/s
08:00	69%	0.1°C	16159m	1.9m/s
09:00	67%	0.3°C	24135m	1.9m/s
10:00	64%	0.6°C	21684m	2.1m/s
11:00	68%	0.9°C	14131m	2.4m/s
12:00	0%	1.3°C	24135m	2.4m/s
13:00	0%	1.6°C	24134m	2.3m/s
14:00	0%	1.5°C	24135m	2.3m/s
15:00	0%	1°C	24134m	2.2m/s
16:00	67%	0.5°C	24135m	1.9m/s
17:00	75%	0.4°C	13303m	2m/s
18:00	83%	0.3°C	6584m	2.2m/s
19:00	86%	0.2°C	6545m	2.3m/s
20:00	86%	0.1°C	6546m	2.2m/s
21:00	86%	0°C	6545m	2.1m/s
22:00	86%	0°C	6545m	2.1m/s
23:00	86%	0.1°C	6581m	2m/s
Wed, Feb 18
24:00	86%	0.1°C	7683m	1.8m/s
01:00	78%	0.2°C	11252m	1.9m/s
02:00	69%	0.1°C	16276m	1.8m/s
03:00	86%	0°C	6543m	1.6m/s
04:00	86%	0°C	6544m	1.8m/s
05:00	86%	0°C	6517m	2m/s
06:00	86%	0°C	6541m	2.3m/s
07:00	86%	0°C	6545m	2.5m/s
08:00	86%	0°C	6544m	3m/s
09:00	78%	0.2°C	12408m	3.1m/s
10:00	64%	0.5°C	18272m	3.2m/s
11:00	53%	0.7°C	24135m	3.2m/s
12:00	56%	0.6°C	20592m	3.1m/s
13:00	59%	0.5°C	17049m	2.9m/s
14:00	75%	0.4°C	13506m	2.7m/s
15:00	75%	0.3°C	11186m	2.5m/s
16:00	83%	0.3°C	8866m	2.3m/s
17:00	83%	0.2°C	6547m	2.1m/s
18:00	83%	0.3°C	6899m	2.2m/s
19:00	83%	0.2°C	7250m	2.4m/s
20:00	83%	0.3°C	7602m	2.5m/s
21:00	72%	0.5°C	13113m	2.7m/s
22:00	60%	0.9°C	18624m	2.8m/s
23:00	0%	1.3°C	24135m	3m/s
Thu, Feb 19
24:00	0%	1.5°C	24135m	3.2m/s
01:00	0%	1.7°C	24135m	3.5m/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/Helsinki	Dew Point °C	Rainfall mm	Relative Humidity %	Snowfall cm	Temperature °C	Total Precipitation mm	Vapor Pressure Deficit kPa	Wind Gusts m/s
Mon, Feb 16 Sunrise 07:45 Sunset 16:49
04:00 ☾	-17°C	0.01mm	100%	0cm	-17°C	0mm	0kPa	2.7m/s
05:00 ☾	-17°C	0.01mm	100%	0cm	-17°C	0mm	0kPa	1.7m/s
06:00 ☾	-16°C	0.01mm	100%	0cm	-16°C	0.06mm	0kPa	1.9m/s
07:00 ☾	-12°C	0.01mm	98%	0cm	-12°C	0.06mm	0.01kPa	3m/s
08:00	-11°C	0.01mm	97%	0cm	-11°C	0.06mm	0.01kPa	3.4m/s
09:00	-10°C	0.01mm	95%	0cm	-9.9°C	0mm	0.01kPa	2.9m/s
10:00	-9.9°C	0.01mm	94%	0cm	-9.2°C	0mm	0.02kPa	2.4m/s
11:00	-9.6°C	0.01mm	93%	0cm	-8.6°C	0.06mm	0.02kPa	1.6m/s
12:00	-9.3°C	0.01mm	92%	0cm	-8.3°C	0.06mm	0.03kPa	1.7m/s
13:00	-9.5°C	0mm	92%	0cm	-8.5°C	0.06mm	0.02kPa	1.7m/s
14:00	-9.8°C	0mm	93%	0cm	-9°C	0.06mm	0.02kPa	1.9m/s
15:00	-10°C	0mm	96%	0cm	-9.8°C	0mm	0.01kPa	1.5m/s
16:00	-12°C	0mm	98%	0cm	-12°C	0mm	0.01kPa	1.1m/s
17:00 ☾	-14°C	0mm	99%	0cm	-14°C	0mm	0kPa	1.5m/s
18:00 ☾	-15°C	0mm	100%	0cm	-15°C	0mm	0kPa	1.5m/s
19:00 ☾	-15°C	0mm	100%	0cm	-15°C	0mm	0kPa	1.7m/s
20:00 ☾	-16°C	0mm	99%	0cm	-16°C	0mm	0kPa	1.7m/s
21:00 ☾	-16°C	0mm	99%	0cm	-16°C	0mm	0kPa	1.8m/s
22:00 ☾	-17°C	0mm	99%	0cm	-17°C	0mm	0kPa	1.8m/s
23:00 ☾	-17°C	0mm	99%	0cm	-17°C	0mm	0kPa	1.7m/s
Tue, Feb 17 Sunrise 07:45 Sunset 16:49
24:00 ☾	-17°C	0mm	99%	0cm	-17°C	0mm	0kPa	1.7m/s
01:00 ☾	-18°C	0mm	99%	0cm	-17°C	0mm	0kPa	1.7m/s
02:00 ☾	-18°C	0mm	100%	0cm	-18°C	0mm	0kPa	1.7m/s
03:00 ☾	-18°C	0mm	100%	0cm	-18°C	0mm	0kPa	1.7m/s
04:00 ☾	-18°C	0mm	100%	0cm	-18°C	0mm	0kPa	1.8m/s
05:00 ☾	-18°C	0mm	100%	0cm	-18°C	0mm	0kPa	2m/s
06:00 ☾	-18°C	0mm	100%	0cm	-18°C	0mm	0kPa	2m/s
07:00 ☾	-18°C	0mm	99%	0cm	-18°C	0mm	0kPa	1.9m/s
08:00	-18°C	0mm	99%	0cm	-18°C	0mm	0kPa	2.5m/s
09:00	-17°C	0mm	98%	0cm	-16°C	0mm	0kPa	2.8m/s
10:00	-15°C	0mm	95%	0cm	-14°C	0mm	0.01kPa	3.5m/s
11:00	-13°C	0mm	93%	0cm	-12°C	0mm	0.02kPa	4m/s
12:00	-12°C	0mm	90%	0cm	-11°C	0mm	0.03kPa	4.1m/s
13:00	-11°C	0mm	88%	0cm	-9.7°C	0mm	0.03kPa	4.1m/s
14:00	-11°C	0mm	89%	0cm	-9.5°C	0mm	0.03kPa	4.4m/s
15:00	-11°C	0mm	92%	0cm	-10°C	0mm	0.02kPa	4.1m/s
16:00	-12°C	0mm	96%	0cm	-12°C	0mm	0.01kPa	1.8m/s
17:00 ☾	-15°C	0mm	97%	0cm	-14°C	0mm	0.01kPa	2m/s
18:00 ☾	-15°C	0mm	98%	0cm	-15°C	0mm	0kPa	2.1m/s
19:00 ☾	-16°C	0mm	98%	0cm	-16°C	0mm	0kPa	2.2m/s
20:00 ☾	-16°C	0mm	99%	0cm	-16°C	0mm	0kPa	2.1m/s
21:00 ☾	-17°C	0mm	100%	0cm	-17°C	0mm	0kPa	2.1m/s
22:00 ☾	-17°C	0mm	100%	0cm	-17°C	0mm	0kPa	1.9m/s
23:00 ☾	-17°C	0mm	99%	0cm	-17°C	0mm	0kPa	1.9m/s
Wed, Feb 18 Sunrise 07:42 Sunset 16:51
24:00 ☾	-18°C	0mm	99%	0cm	-18°C	0mm	0kPa	1.8m/s
01:00 ☾	-18°C	0mm	99%	0cm	-18°C	0mm	0kPa	1.9m/s
02:00 ☾	-18°C	0mm	99%	0cm	-18°C	0mm	0kPa	1.8m/s
03:00 ☾	-18°C	0mm	100%	0cm	-18°C	0mm	0kPa	1.6m/s
04:00 ☾	-18°C	0mm	100%	0cm	-19°C	0mm	0kPa	1.7m/s
05:00 ☾	-18°C	0mm	100%	0cm	-18°C	0mm	0kPa	2.5m/s
06:00 ☾	-18°C	0mm	100%	0cm	-18°C	0mm	0kPa	3.3m/s
07:00 ☾	-18°C	0mm	100%	0cm	-18°C	0mm	0kPa	5m/s
08:00	-17°C	0mm	100%	0cm	-17°C	0mm	0kPa	6.6m/s
09:00	-15°C	0mm	98%	0cm	-15°C	0mm	0kPa	6.6m/s
10:00	-14°C	0mm	96%	0cm	-13°C	0mm	0.01kPa	6.5m/s
11:00	-12°C	0mm	94%	0cm	-11°C	0mm	0.01kPa	6.4m/s
12:00	-13°C	0mm	95%	0cm	-12°C	0mm	0.01kPa	6.3m/s
13:00	-13°C	0mm	96%	0cm	-13°C	0mm	0.01kPa	6.2m/s
14:00	-14°C	0mm	97%	0cm	-14°C	0mm	0.01kPa	6m/s
15:00	-14°C	0mm	97%	0cm	-14°C	0mm	0.01kPa	5.3m/s
16:00	-15°C	0mm	98%	0cm	-15°C	0mm	0kPa	4.6m/s
17:00 ☾	-15°C	0mm	98%	0cm	-15°C	0mm	0kPa	3.9m/s
18:00 ☾	-15°C	0mm	98%	0cm	-15°C	0mm	0kPa	4.2m/s
19:00 ☾	-16°C	0mm	98%	0cm	-15°C	0mm	0kPa	4.5m/s
20:00 ☾	-16°C	0mm	98%	0cm	-16°C	0mm	0kPa	4.8m/s
21:00 ☾	-15°C	0mm	95%	0cm	-14°C	0mm	0.01kPa	5.8m/s
22:00 ☾	-14°C	0mm	93%	0cm	-13°C	0mm	0.02kPa	6.8m/s
23:00 ☾	-14°C	0mm	90%	0cm	-12°C	0mm	0.02kPa	7.8m/s
Thu, Feb 19 Sunrise 07:39 Sunset 16:54
24:00 ☾	-13°C	0mm	89%	0cm	-12°C	0mm	0.03kPa	8.2m/s
01:00 ☾	-13°C	0mm	87%	0cm	-11°C	0mm	0.03kPa	8.5m/s
02:00 ☾	-13°C	0mm	86%	0cm	-11°C	0mm	0.04kPa	8.9m/s
03:00 ☾	-12°C	0mm	84%	0cm	-10°C	0mm	0.05kPa	9.8m/s

How to read: these inputs help produce the derived score; they are not requirements by themselves.

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