Frost Dates for HELSINKI HELSINGIN MAJAKKA, Finland

Frost Dates

Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. April 17
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. November 13

30% Probability

Only a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.
Last Spring Frost April 22
First Fall Frost November 5

Hard Freeze (−2°C)

Last Spring Hard Freeze April 8
First Fall Hard Freeze November 23
59.95°N, 24.93°E © OpenStreetMap

Growing Season

210 Days April 17 to November 13

USDA Hardiness Zone

Hardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.
Zone 7a

Avg. annual minimum: −18 to −15°C

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dsb Warm-Summer Continental (Dry Summer)

Warm, dry summers and cold, snowy winters. Common in mountain regions. Moderate growing season with irrigation needs in summer.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January-1°-3°-4°
February-3°-4°-6°
March0°-2°-4°
April3°2°1°
May8°7°6°
June12°11°10°
July18°17°16°
August18°17°16°
September14°13°12°
October9°8°7°
November5°4°3°
December2°0°-1°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January58
February41
March25
April28
May36
June58
July51
August74
September74
October84
November79
December76

Sunrise / Sunset

Daylight Longest: 18h 29m · Shortest: 5h 32m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January8:49 AM3:11 PM6h 22m
February7:36 AM4:24 PM8h 47m
March6:20 AM5:40 PM11h 21m
April4:53 AM7:07 PM14h 13m
May3:36 AM8:24 PM16h 48m
June2:47 AM9:13 PM18h 25m
July3:08 AM8:52 PM17h 44m
August4:20 AM7:40 PM15h 21m
September5:45 AM6:15 PM12h 31m
October7:08 AM4:52 PM9h 44m
November8:28 AM3:32 PM7h 05m
December9:13 AM2:47 PM5h 34m

Nearby Stations

HELSINKI HARMAJA, Finland April 27 - October 19 HELSINKI ISOSAARI, Finland April 24 - October 24 HELSINKI KAISANIEMI AWS, Finland April 28 - October 19 HELSINKI RAUTATIENTORI, Finland April 27 - October 20 HELSINKI ILMALA, Finland April 28 - October 19 HELSINKI KUMPULA, Finland April 28 - October 18

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