Frost Dates for Swansea Post Office, 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 31
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. May 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 September 12
First Fall Frost May 21
-42.12°N, 148.07°W © OpenStreetMap

Growing Season

272 Days August 31 to May 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: 25 to 30°F (−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° 10° 20°
17°
High: 23°C
Avg: 17°C
Low: 12°C
Jan
17°
High: 22°C
Avg: 17°C
Low: 12°C
Feb
16°
High: 21°C
Avg: 16°C
Low: 11°C
Mar
13°
High: 19°C
Avg: 13°C
Low: 8°C
Apr
11°
High: 16°C
Avg: 11°C
Low: 7°C
May
9°
High: 14°C
Avg: 9°C
Low: 5°C
Jun
9°
High: 14°C
Avg: 9°C
Low: 4°C
Jul
10°
High: 15°C
Avg: 10°C
Low: 5°C
Aug
11°
High: 16°C
Avg: 11°C
Low: 6°C
Sep
13°
High: 18°C
Avg: 13°C
Low: 7°C
Oct
14°
High: 19°C
Avg: 14°C
Low: 9°C
Nov
16°
High: 21°C
Avg: 16°C
Low: 11°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 20 mm 40 mm 60 mm
64 mm
63.5 mm
Jan
46 mm
45.7 mm
Feb
36 mm
35.6 mm
Mar
43 mm
43.2 mm
Apr
18 mm
17.8 mm
May
33 mm
33.0 mm
Jun
20 mm
20.3 mm
Jul
36 mm
35.6 mm
Aug
28 mm
27.9 mm
Sep
51 mm
50.8 mm
Oct
66 mm
66.0 mm
Nov
48 mm
48.3 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec14.5h13.5h12.5h11h9.5h9h9h10.5h11.5h13h14.5h15h
Jan: 4:38 AM – 7:22 PM · 14h 45m
Feb: 5:11 AM – 6:49 PM · 13h 39m
Mar: 5:50 AM – 6:10 PM · 12h 20m
Apr: 6:34 AM – 5:26 PM · 10h 51m
May: 7:12 AM – 4:48 PM · 9h 37m
Jun: 7:32 AM – 4:28 PM · 8h 56m
Jul: 7:24 AM – 4:36 PM · 9h 13m
Aug: 6:51 AM – 5:09 PM · 10h 17m
Sep: 6:08 AM – 5:52 PM · 11h 44m
Oct: 5:25 AM – 6:35 PM · 13h 10m
Nov: 4:47 AM – 7:13 PM · 14h 26m
Dec: 4:28 AM – 7:32 PM · 15h 04m
Daylight Longest: 15h 05m · Shortest: 8h 55m

Nearby Stations

Friendly Beaches, TAS August 1 - June 7 Lake Leake (Elizabeth River), TAS November 16 - March 5 Bicheno (Council Depot), TAS Ross (The Boulevards), TAS November 15 - March 28 Orford (Aubin Court), TAS August 19 - June 10 Fingal (Legge Street), TAS November 3 - April 8

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