Frost Dates for Port Alberni (Aut), BC

Elevation: 76 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. April 26
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. October 23

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 May 2
First Fall Frost October 15

Hard Freeze (−2°C)

Last Spring Hard Freeze March 31
First Fall Hard Freeze November 14
49.32°N, 124.93°W © OpenStreetMap

Growing Season

180 Days April 26 to October 23

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 8a

Avg. annual minimum: −12 to −9°C

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Csb Warm-Summer Mediterranean

Warm, dry summers and mild, wet winters. Similar to hot-summer Mediterranean but cooler. Great for a wide range of vegetables and fruit trees with moderate water needs.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January5°2°0°
February7°3°-1°
March10°5°1°
April14°8°3°
May19°12°6°
June21°15°9°
July26°18°11°
August26°19°11°
September22°15°9°
October14°10°5°
November8°5°2°
December4°2°0°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January320
February178
March211
April109
May61
June30
July13
August25
September79
October201
November333
December307

Sunrise / Sunset

Daylight Longest: 16h 02m · Shortest: 7h 58m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:48 AM4:12 PM8h 25m
February7:04 AM4:56 PM9h 52m
March6:13 AM5:47 PM11h 34m
April5:16 AM6:44 PM13h 29m
May4:27 AM7:33 PM15h 07m
June3:60 AM8:00 PM16h 01m
July4:11 AM7:49 PM15h 38m
August4:54 AM7:06 PM14h 13m
September5:50 AM6:10 PM12h 21m
October6:45 AM5:15 PM10h 29m
November7:35 AM4:25 PM8h 49m
December8:00 AM3:60 PM7h 59m

Nearby Stations

Alberni Robertson Creek, BC April 25 - October 27 Port Alberni Cox Lake, BC April 29 - October 20 Mud Bay, BCApril 15 - October 28 Qualicum R Fish Research, BC April 11 - October 29 Little Qualicum Hatchery, BC May 1 - October 9 Coombs, BCMay 3 - October 9

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