Frost Dates for Guernsey: Airport, United Kingdom

Elevation: 101 m

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. February 13
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 30
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 February 22
First Fall Frost November 9
49.43°N, -2.60°W © OpenStreetMap

Growing Season

291 Days February 13 to November 30

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 9b

Avg. annual minimum: −4 to −1°C

Learn more

Köppen Climate iThe 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

0° 5° 10° 15° 20°
7°
High: 9°C
Avg: 7°C
Low: 5°C
Jan
7°
High: 9°C
Avg: 7°C
Low: 5°C
Feb
8°
High: 10°C
Avg: 8°C
Low: 6°C
Mar
10°
High: 12°C
Avg: 10°C
Low: 7°C
Apr
12°
High: 15°C
Avg: 12°C
Low: 10°C
May
15°
High: 18°C
Avg: 15°C
Low: 12°C
Jun
17°
High: 20°C
Avg: 17°C
Low: 14°C
Jul
17°
High: 20°C
Avg: 17°C
Low: 14°C
Aug
16°
High: 18°C
Avg: 16°C
Low: 13°C
Sep
13°
High: 15°C
Avg: 13°C
Low: 11°C
Oct
10°
High: 12°C
Avg: 10°C
Low: 8°C
Nov
8°
High: 10°C
Avg: 8°C
Low: 6°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 50 mm 100 mm
84 mm
83.8 mm
Jan
76 mm
76.2 mm
Feb
64 mm
63.5 mm
Mar
61 mm
61.0 mm
Apr
48 mm
48.3 mm
May
46 mm
45.7 mm
Jun
36 mm
35.6 mm
Jul
61 mm
61.0 mm
Aug
61 mm
61.0 mm
Sep
102 mm
101.6 mm
Oct
102 mm
101.6 mm
Nov
119 mm
119.4 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14h12.5h10.5h9h8h
Jan: 7:48 AM – 4:12 PM · 8h 24m
Feb: 7:04 AM – 4:56 PM · 9h 52m
Mar: 6:13 AM – 5:47 PM · 11h 34m
Apr: 5:15 AM – 6:45 PM · 13h 29m
May: 4:26 AM – 7:34 PM · 15h 07m
Jun: 3:59 AM – 8:01 PM · 16h 02m
Jul: 4:10 AM – 7:50 PM · 15h 39m
Aug: 4:53 AM – 7:07 PM · 14h 13m
Sep: 5:50 AM – 6:10 PM · 12h 21m
Oct: 6:46 AM – 5:14 PM · 10h 29m
Nov: 7:36 AM – 4:24 PM · 8h 49m
Dec: 8:01 AM – 3:59 PM · 7h 58m
Daylight Longest: 16h 04m · Shortest: 7h 57m

Nearby Stations

Jersey: Airport, United Kingdom February 22 - December 14 Slapton, United Kingdom March 20 - December 1 Swanage, United Kingdom March 14 - December 3 Hurn, United Kingdom April 26 - October 22

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