Frost Dates for Dundrum, United Kingdom

Based on data from Hillsborough weather station, 16 miles away

Elevation: 6 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. April 19
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 10

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 30
First Fall Frost October 31

Hard Freeze (−2°C)

Last Spring Hard Freeze March 8
First Fall Hard Freeze December 2
54.26°N, 5.84°W © OpenStreetMap

Growing Season

205 Days April 19 to November 10

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 9a

Avg. annual minimum: −7 to −4°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
January7°4°2°
February8°5°2°
March9°6°3°
April12°8°4°
May15°11°6°
June17°13°9°
July19°15°11°
August18°15°11°
September16°13°9°
October13°10°7°
November10°7°4°
December8°5°2°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January84
February71
March76
April64
May66
June71
July76
August74
September76
October97
November97
December89

Sunrise / Sunset

Daylight Greenwich Mean Time (GMT) Longest: 16h 59m · Shortest: 7h 01m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Greenwich Mean Time (GMT))
Month Sunrise Sunset Daylight
January8:46 AM4:22 PM7h 36m
February7:56 AM5:22 PM9h 26m
March6:50 AM6:18 PM11h 28m
April6:31 AM8:18 PM13h 47m
May5:27 AM9:14 PM15h 47m
June4:56 AM9:53 PM16h 57m
July5:16 AM9:44 PM16h 28m
August6:08 AM8:49 PM14h 41m
September7:06 AM7:31 PM12h 25m
October8:04 AM6:15 PM10h 10m
November8:06 AM4:13 PM8h 07m
December8:49 AM3:52 PM7h 03m

Nearby Stations

Stormont Castle, United Kingdom March 24 - November 24 Aldergrove, United Kingdom April 14 - November 8 Armagh, United Kingdom April 13 - November 9 Lough Navar Forest, United Kingdom May 23 - October 3 DUBLIN PHOENIX PARK, Ireland March 15 - December 4 CASEMENT, Ireland March 22 - November 20

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