Frost Dates for DEN HELDER-1, Netherlands

Elevation: 2 m

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. February 25
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. December 11

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 March 10
First Fall Frost December 5

Hard Freeze (−2°C)

Last Spring Hard Freeze February 15
First Fall Hard Freeze December 9
52.93°N, 4.75°E © OpenStreetMap

Growing Season

290 Days February 25 to December 11

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 9b

Avg. annual minimum: −4 to −1°C

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Cfb Oceanic (Marine West Coast)

Mild year-round with cool summers and wet winters. Excellent for cool-season crops like brassicas, peas, and root vegetables. Extended harvest seasons but summer heat-loving crops may struggle.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January6°5°3°
February6°4°3°
March8°6°4°
April11°9°7°
May14°12°10°
June16°15°13°
July19°17°15°
August19°18°16°
September17°16°14°
October14°12°11°
November10°9°7°
December7°6°5°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January76
February66
March56
April30
May58
June61
July76
August86
September86
October89
November79
December84

Sunrise / Sunset

Daylight Longest: 16h 40m · Shortest: 7h 20m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January8:04 AM3:56 PM7h 52m
February7:13 AM4:47 PM9h 34m
March6:15 AM5:45 PM11h 30m
April5:09 AM6:51 PM13h 41m
May4:13 AM7:47 PM15h 34m
June3:41 AM8:19 PM16h 38m
July3:54 AM8:06 PM16h 12m
August4:44 AM7:16 PM14h 32m
September5:48 AM6:12 PM12h 24m
October6:52 AM5:08 PM10h 16m
November7:49 AM4:11 PM8h 21m
December8:19 AM3:41 PM7h 21m

Nearby Stations

DE KOOY, Netherlands February 25 - December 11 DEN HELDER, Netherlands February 15 - December 11 CALLANTSOOG, Netherlands February 25 - December 11 BERKHOUT, Netherlands March 12 - December 8 VLIELAND, Netherlands February 15 - December 10 HOORN-A, Netherlands February 15 - December 8

Plan Your Garden with Planter

Now that you know your frost dates, use Planter to plan your veggie garden! Planter is an easy drag-and-drop garden planner with personalized planting schedules.

Try Planter For Free

Available everywhere: iOS, Android, web, and more!

Planter app garden planner preview