Frost Dates for HELSINKI HELSINGIN MAJAKKA, Finland

Frost Dates

Last Spring Frost (50%) iA 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%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. November 13
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly 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°W © OpenStreetMap

Growing Season

210 Days April 17 to November 13

USDA Hardiness Zone iHardiness 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 iThe 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

-10° 0° 10° 20°
-3°
High: -1°C
Avg: -3°C
Low: -4°C
Jan
-4°
High: -3°C
Avg: -4°C
Low: -6°C
Feb
-2°
High: 0°C
Avg: -2°C
Low: -4°C
Mar
2°
High: 3°C
Avg: 2°C
Low: 1°C
Apr
7°
High: 8°C
Avg: 7°C
Low: 6°C
May
11°
High: 12°C
Avg: 11°C
Low: 10°C
Jun
17°
High: 18°C
Avg: 17°C
Low: 16°C
Jul
17°
High: 18°C
Avg: 17°C
Low: 16°C
Aug
13°
High: 14°C
Avg: 13°C
Low: 12°C
Sep
8°
High: 9°C
Avg: 8°C
Low: 7°C
Oct
4°
High: 5°C
Avg: 4°C
Low: 3°C
Nov
0°
High: 2°C
Avg: 0°C
Low: -1°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 30 mm 60 mm 90 mm
58 mm
58.4 mm
Jan
41 mm
40.6 mm
Feb
25 mm
25.4 mm
Mar
28 mm
27.9 mm
Apr
36 mm
35.6 mm
May
58 mm
58.4 mm
Jun
51 mm
50.8 mm
Jul
74 mm
73.7 mm
Aug
74 mm
73.7 mm
Sep
84 mm
83.8 mm
Oct
79 mm
78.7 mm
Nov
76 mm
76.2 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec6.5h9h11.5h14h17h18.5h17.5h15.5h12.5h9.5h7h5.5h
Jan: 8:49 AM – 3:11 PM · 6h 22m
Feb: 7:36 AM – 4:24 PM · 8h 47m
Mar: 6:20 AM – 5:40 PM · 11h 21m
Apr: 4:53 AM – 7:07 PM · 14h 13m
May: 3:36 AM – 8:24 PM · 16h 48m
Jun: 2:47 AM – 9:13 PM · 18h 25m
Jul: 3:08 AM – 8:52 PM · 17h 44m
Aug: 4:20 AM – 7:40 PM · 15h 21m
Sep: 5:45 AM – 6:15 PM · 12h 31m
Oct: 7:08 AM – 4:52 PM · 9h 44m
Nov: 8:28 AM – 3:32 PM · 7h 05m
Dec: 9:13 AM – 2:47 PM · 5h 34m
Daylight Longest: 18h 29m · Shortest: 5h 32m

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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