Frost Dates for St Helens Aerodrome, TAS

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. August 15
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. June 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 August 24
First Fall Frost June 10
-41.34°N, 148.28°W © OpenStreetMap

Growing Season

306 Days August 15 to June 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 10a

Avg. annual minimum: 30 to 35°F (−1 to 2°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° 10° 20°
18°
High: 23°C
Avg: 18°C
Low: 13°C
Jan
18°
High: 22°C
Avg: 18°C
Low: 13°C
Feb
16°
High: 21°C
Avg: 16°C
Low: 12°C
Mar
14°
High: 19°C
Avg: 14°C
Low: 10°C
Apr
12°
High: 16°C
Avg: 12°C
Low: 7°C
May
10°
High: 14°C
Avg: 10°C
Low: 5°C
Jun
9°
High: 14°C
Avg: 9°C
Low: 5°C
Jul
10°
High: 14°C
Avg: 10°C
Low: 5°C
Aug
11°
High: 16°C
Avg: 11°C
Low: 7°C
Sep
13°
High: 18°C
Avg: 13°C
Low: 8°C
Oct
15°
High: 20°C
Avg: 15°C
Low: 10°C
Nov
17°
High: 21°C
Avg: 17°C
Low: 12°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 20 mm 40 mm 60 mm 80 mm
48 mm
48.3 mm
Jan
58 mm
58.4 mm
Feb
58 mm
58.4 mm
Mar
33 mm
33.0 mm
Apr
43 mm
43.2 mm
May
64 mm
63.5 mm
Jun
48 mm
48.3 mm
Jul
53 mm
53.3 mm
Aug
46 mm
45.7 mm
Sep
64 mm
63.5 mm
Oct
76 mm
76.2 mm
Nov
58 mm
58.4 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec14.5h13.5h12.5h11h9.5h9h9.5h10.5h11.5h13h14.5h15h
Jan: 4:40 AM – 7:20 PM · 14h 40m
Feb: 5:12 AM – 6:48 PM · 13h 36m
Mar: 5:50 AM – 6:10 PM · 12h 20m
Apr: 6:34 AM – 5:26 PM · 10h 53m
May: 7:10 AM – 4:50 PM · 9h 41m
Jun: 7:29 AM – 4:31 PM · 9h 02m
Jul: 7:21 AM – 4:39 PM · 9h 18m
Aug: 6:50 AM – 5:10 PM · 10h 20m
Sep: 6:08 AM – 5:52 PM · 11h 44m
Oct: 5:26 AM – 6:34 PM · 13h 08m
Nov: 4:49 AM – 7:11 PM · 14h 22m
Dec: 4:31 AM – 7:29 PM · 14h 58m
Daylight Longest: 14h 59m · Shortest: 9h 01m

Nearby Stations

Eddystone Point, TAS Fingal (Legge Street), TAS November 3 - April 8 Bicheno (Council Depot), TAS Scottsdale (West Minstone Road, TAS September 25 - May 24 Swan Island, TAS Friendly Beaches, TAS August 1 - June 7

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