Frost Dates for Scalloway, United Kingdom

Based on data from Lerwick weather station, 3 miles away

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 18
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 17
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 28
First Fall Frost November 8

Hard Freeze (−2°C)

Last Spring Hard Freeze March 10
First Fall Hard Freeze December 12
60.14°N, -1.28°W © OpenStreetMap

Growing Season

213 Days April 18 to November 17

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 9a

Avg. annual minimum: 20 to 25°F (−7 to −4°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°
4°
High: 6°C
Avg: 4°C
Low: 2°C
Jan
4°
High: 6°C
Avg: 4°C
Low: 2°C
Feb
5°
High: 7°C
Avg: 5°C
Low: 2°C
Mar
6°
High: 8°C
Avg: 6°C
Low: 4°C
Apr
8°
High: 11°C
Avg: 8°C
Low: 6°C
May
10°
High: 13°C
Avg: 10°C
Low: 8°C
Jun
12°
High: 14°C
Avg: 12°C
Low: 10°C
Jul
13°
High: 15°C
Avg: 13°C
Low: 11°C
Aug
11°
High: 13°C
Avg: 11°C
Low: 9°C
Sep
8°
High: 10°C
Avg: 8°C
Low: 7°C
Oct
6°
High: 8°C
Avg: 6°C
Low: 4°C
Nov
5°
High: 7°C
Avg: 5°C
Low: 3°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 50 mm 100 mm 150 mm
157 mm
157.5 mm
Jan
122 mm
121.9 mm
Feb
104 mm
104.1 mm
Mar
69 mm
68.6 mm
Apr
64 mm
63.5 mm
May
69 mm
68.6 mm
Jun
76 mm
76.2 mm
Jul
94 mm
94.0 mm
Aug
102 mm
101.6 mm
Sep
135 mm
134.6 mm
Oct
147 mm
147.3 mm
Nov
157 mm
157.5 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec6.5h9h11.5h14h17h18.5h18h15.5h12.5h9.5h7h5.5h
Jan: 8:51 AM – 3:09 PM · 6h 19m
Feb: 7:37 AM – 4:23 PM · 8h 46m
Mar: 6:20 AM – 5:40 PM · 11h 21m
Apr: 4:53 AM – 7:07 PM · 14h 14m
May: 3:35 AM – 8:25 PM · 16h 51m
Jun: 2:45 AM – 9:15 PM · 18h 29m
Jul: 3:07 AM – 8:53 PM · 17h 47m
Aug: 4:19 AM – 7:41 PM · 15h 22m
Sep: 5:45 AM – 6:15 PM · 12h 31m
Oct: 7:09 AM – 4:51 PM · 9h 43m
Nov: 8:29 AM – 3:31 PM · 7h 02m
Dec: 9:15 AM – 2:45 PM · 5h 30m
Daylight Longest: 18h 32m · Shortest: 5h 28m

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