Frost Dates for Swansea Post Office, TAS

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. August 31
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. May 30

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 September 12
First Fall Frost May 21
42.12°S, 148.07°E © OpenStreetMap

Growing Season

272 Days August 31 to May 30

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 9b

Avg. annual minimum: −4 to −1°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
January23°17°12°
February22°17°12°
March21°16°11°
April19°13°8°
May16°11°7°
June14°9°5°
July14°9°4°
August15°10°5°
September16°11°6°
October18°13°7°
November19°14°9°
December21°16°11°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January64
February46
March36
April43
May18
June33
July20
August36
September28
October51
November66
December48

Sunrise / Sunset

Daylight Longest: 15h 05m · Shortest: 8h 55m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January4:38 AM7:22 PM14h 45m
February5:11 AM6:49 PM13h 39m
March5:50 AM6:10 PM12h 20m
April6:34 AM5:26 PM10h 51m
May7:12 AM4:48 PM9h 37m
June7:32 AM4:28 PM8h 56m
July7:24 AM4:36 PM9h 13m
August6:51 AM5:09 PM10h 17m
September6:08 AM5:52 PM11h 44m
October5:25 AM6:35 PM13h 10m
November4:47 AM7:13 PM14h 26m
December4:28 AM7:32 PM15h 04m

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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