Frost Dates for Cortes Island Tiber Bay, BC

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 21
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. October 28
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 27
First Fall Frost October 23

Hard Freeze (−2°C)

Last Spring Hard Freeze March 20
First Fall Hard Freeze November 18
50.07°N, -124.95°W © OpenStreetMap

Growing Season

190 Days April 21 to October 28

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 8b

Avg. annual minimum: 15 to 20°F (−9 to −7°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°
4°
High: 6°C
Avg: 4°C
Low: 1°C
Jan
4°
High: 8°C
Avg: 4°C
Low: 1°C
Feb
6°
High: 10°C
Avg: 6°C
Low: 2°C
Mar
9°
High: 14°C
Avg: 9°C
Low: 4°C
Apr
13°
High: 19°C
Avg: 13°C
Low: 7°C
May
16°
High: 21°C
Avg: 16°C
Low: 10°C
Jun
19°
High: 25°C
Avg: 19°C
Low: 13°C
Jul
18°
High: 24°C
Avg: 18°C
Low: 12°C
Aug
15°
High: 20°C
Avg: 15°C
Low: 9°C
Sep
10°
High: 13°C
Avg: 10°C
Low: 6°C
Oct
6°
High: 9°C
Avg: 6°C
Low: 3°C
Nov
3°
High: 6°C
Avg: 3°C
Low: 0°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 50 mm 100 mm 150 mm 200 mm
170 mm
170.2 mm
Jan
114 mm
114.3 mm
Feb
117 mm
116.8 mm
Mar
84 mm
83.8 mm
Apr
64 mm
63.5 mm
May
64 mm
63.5 mm
Jun
30 mm
30.5 mm
Jul
43 mm
43.2 mm
Aug
84 mm
83.8 mm
Sep
147 mm
147.3 mm
Oct
188 mm
188.0 mm
Nov
180 mm
180.3 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14.5h12.5h10.5h8.5h8h
Jan: 7:51 AM – 4:09 PM · 8h 18m
Feb: 7:06 AM – 4:54 PM · 9h 49m
Mar: 6:13 AM – 5:47 PM · 11h 33m
Apr: 5:14 AM – 6:46 PM · 13h 31m
May: 4:24 AM – 7:36 PM · 15h 12m
Jun: 3:56 AM – 8:04 PM · 16h 08m
Jul: 4:08 AM – 7:52 PM · 15h 45m
Aug: 4:52 AM – 7:08 PM · 14h 16m
Sep: 5:49 AM – 6:11 PM · 12h 21m
Oct: 6:47 AM – 5:13 PM · 10h 27m
Nov: 7:38 AM – 4:22 PM · 8h 44m
Dec: 8:04 AM – 3:56 PM · 7h 52m
Daylight Longest: 16h 10m · Shortest: 7h 50m

Nearby Stations

Heriot Bay Se, BC March 29 - November 12 Cape Mudge, BC March 22 - November 14 Quinsam River Hatchery, BC April 22 - October 25 Campbell River A, BC April 28 - October 10 Courtenay Meadowbrook, BC April 20 - October 24 Comox A, BCMarch 31 - November 7

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