Rule Morning Frost

Morning Frost 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.

0 matching opportunities in the 14-day forecast.

Hourly forecast scores

Forecast valid from Oct 23, 2026, 5:00 AM UTC (one hour; not an observation)

Frost Probability

Soil Temperature9.4°C

Dew Point7.8°C

Wind Speed6.0m/s

Cloud Cover100%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/Helsinki

No matching opportunities in this 14-day forecast

See which requirements block the most forecast hours below.

72-hour requirements breakdown

When available, this detailed table covers only the stated 72-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the full 14-day forecast period, so this table does not explain that entire period. Times shown in Europe/Helsinki.

Requirements breakdown is temporarily unavailable or expired. This does not mean no opportunities.

Supporting forecast inputs

Additional hourly values for interpreting the forecast and any derived scores. See the separate requirements breakdown for rule logic; missing values are unavailable.

Forecast time (Europe/Helsinki)	Dew Point	Surface Temperature	Temperature	Time Window	Total Cloud Coverage	Vapor Pressure Deficit
Fri, Oct 23, 2026Sunrise 08:20 · Sunset 17:47
08:00 Night	7.8°C	9.4°C	11°C	Unavailable	100%	0.25kPa
09:00	7.5°C	9.5°C	11°C	Unavailable	100%	0.26kPa
10:00	7.8°C	9.9°C	11°C	Unavailable	100%	0.26kPa
11:00	8°C	10°C	11°C	Unavailable	100%	0.25kPa
12:00	8°C	11°C	11°C	Unavailable	100%	0.27kPa
13:00	7.7°C	11°C	11°C	Unavailable	100%	0.28kPa
14:00	8.1°C	11°C	11°C	Unavailable	99%	0.27kPa
15:00	8.2°C	11°C	12°C	Unavailable	90%	0.27kPa
16:00	8.3°C	11°C	11°C	Unavailable	99%	0.26kPa
17:00	8.2°C	11°C	11°C	Unavailable	100%	0.24kPa
18:00 Night	8.3°C	11°C	11°C	Unavailable	100%	0.24kPa
19:00 Night	8.5°C	11°C	12°C	Unavailable	100%	0.24kPa
20:00 Night	8.3°C	11°C	11°C	Unavailable	100%	0.24kPa
21:00 Night	8.6°C	11°C	11°C	Unavailable	100%	0.21kPa
22:00 Night	9.5°C	10°C	11°C	Unavailable	100%	0.12kPa
23:00 Night	9.7°C	10°C	11°C	Unavailable	100%	0.1kPa
Sat, Oct 24, 2026Sunrise 08:22 · Sunset 17:45
24:00 Night	9.8°C	10°C	11°C	Unavailable	100%	0.09kPa
01:00 Night	10°C	10°C	11°C	Unavailable	100%	0.08kPa
02:00 Night	10°C	10°C	11°C	Unavailable	100%	0.08kPa
03:00 Night	10°C	10°C	11°C	Unavailable	100%	0.08kPa
04:00 Night	10°C	11°C	11°C	Unavailable	100%	0.08kPa
05:00 Night	10°C	11°C	11°C	Unavailable	100%	0.08kPa
06:00 Night	10°C	11°C	11°C	Unavailable	100%	0.08kPa
07:00 Night	9.8°C	11°C	11°C	Unavailable	100%	0.08kPa
08:00 Night	8.3°C	10°C	10°C	Unavailable	99%	0.16kPa
09:00	8.5°C	9.1°C	10°C	Unavailable	64%	0.14kPa
10:00	8.6°C	9.5°C	11°C	Unavailable	65%	0.15kPa
11:00	8.9°C	11°C	11°C	Unavailable	99%	0.17kPa
12:00	8.4°C	13°C	11°C	Unavailable	100%	0.24kPa
13:00	7.8°C	12°C	12°C	Unavailable	92%	0.32kPa
14:00	8.6°C	12°C	12°C	Unavailable	92%	0.25kPa
15:00	9.1°C	12°C	12°C	Unavailable	62%	0.2kPa
16:00	8.9°C	11°C	12°C	Unavailable	99%	0.22kPa
17:00	8.7°C	9.9°C	12°C	Unavailable	96%	0.23kPa
18:00 Night	7.5°C	9.3°C	11°C	Unavailable	58%	0.31kPa
19:00 Night	7.6°C	9.2°C	11°C	Unavailable	33%	0.29kPa
20:00 Night	7.7°C	9.1°C	11°C	Unavailable	88%	0.26kPa
21:00 Night	7.4°C	8.7°C	11°C	Unavailable	28%	0.27kPa
22:00 Night	7.3°C	8.6°C	11°C	Unavailable	15%	0.27kPa
23:00 Night	7.4°C	8.5°C	11°C	Unavailable	26%	0.26kPa
Sun, Oct 25, 2026Sunrise 07:25 · Sunset 16:42
24:00 Night	7.2°C	8.4°C	11°C	Unavailable	89%	0.25kPa
01:00 Night	7.2°C	8.3°C	10°C	Unavailable	99%	0.24kPa
02:00 Night	7.3°C	8.2°C	10°C	Unavailable	100%	0.22kPa
03:00 Night	Unavailable	Unavailable	Unavailable	Unavailable	Unavailable	Unavailable
03:00 Night	7.2°C	8.2°C	10°C	Unavailable	100%	0.22kPa
04:00 Night	7.2°C	8.2°C	10°C	Unavailable	100%	0.21kPa
05:00 Night	7.3°C	8.3°C	9.7°C	Unavailable	100%	0.18kPa
06:00 Night	7.4°C	8.6°C	9.6°C	Unavailable	100%	0.17kPa
07:00 Night	7.5°C	8.6°C	9.6°C	Unavailable	100%	0.16kPa
08:00	7.6°C	8.5°C	9.7°C	Unavailable	100%	0.16kPa
09:00	7.5°C	8.1°C	9.7°C	Unavailable	91%	0.17kPa
10:00	7.6°C	8.7°C	9.7°C	Unavailable	69%	0.16kPa
11:00	7.5°C	9.4°C	9.7°C	Unavailable	83%	0.17kPa
12:00	7.2°C	10°C	9.8°C	Unavailable	73%	0.19kPa
13:00	7.2°C	11°C	10°C	Unavailable	49%	0.21kPa
14:00	7.3°C	11°C	10°C	Unavailable	86%	0.21kPa
15:00	7.4°C	11°C	11°C	Unavailable	96%	0.24kPa
16:00	7.4°C	10°C	11°C	Unavailable	92%	0.27kPa
17:00 Night	7.3°C	9.9°C	11°C	Unavailable	85%	0.31kPa
18:00 Night	7.2°C	9.8°C	11°C	Unavailable	99%	0.32kPa
19:00 Night	7°C	10°C	12°C	Unavailable	90%	0.35kPa
20:00 Night	6.8°C	10°C	12°C	Unavailable	90%	0.37kPa
21:00 Night	6.8°C	10°C	12°C	Unavailable	96%	0.37kPa
22:00 Night	7.1°C	10°C	12°C	Unavailable	99%	0.35kPa
23:00 Night	8.2°C	10°C	12°C	Unavailable	100%	0.27kPa
Mon, Oct 26, 2026Sunrise 07:27 · Sunset 16:39
24:00 Night	8.9°C	11°C	12°C	Unavailable	100%	0.22kPa
01:00 Night	8.5°C	11°C	12°C	Unavailable	100%	0.29kPa
02:00 Night	7.5°C	10°C	11°C	Unavailable	100%	0.29kPa
03:00 Night	7.9°C	11°C	12°C	Unavailable	100%	0.3kPa
04:00 Night	7.7°C	11°C	12°C	Unavailable	100%	0.31kPa
05:00 Night	8°C	10°C	11°C	Unavailable	100%	0.25kPa
06:00 Night	7.9°C	9.8°C	11°C	Unavailable	100%	0.22kPa

How this forecast is evaluated

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

Explore Morning Frost 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

recorded matching windows

Last 90 days

recorded matching windows

Last 365 days

recorded matching windows · 85% average confidence

Only 4 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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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 →

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