Frost Dates for Port Renfrew, 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 11
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 31
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 19
First Fall Frost October 24

Hard Freeze (−2°C)

Last Spring Hard Freeze February 18
First Fall Hard Freeze November 24
48.60°N, -124.33°W © OpenStreetMap

Growing Season

203 Days April 11 to October 31

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 9a

Avg. annual minimum: 20 to 25°F (−7 to −4°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° 5° 10° 15° 20°
4°
High: 6°C
Avg: 4°C
Low: 2°C
Jan
5°
High: 8°C
Avg: 5°C
Low: 2°C
Feb
6°
High: 10°C
Avg: 6°C
Low: 3°C
Mar
8°
High: 12°C
Avg: 8°C
Low: 4°C
Apr
11°
High: 15°C
Avg: 11°C
Low: 7°C
May
13°
High: 17°C
Avg: 13°C
Low: 10°C
Jun
16°
High: 20°C
Avg: 16°C
Low: 11°C
Jul
16°
High: 20°C
Avg: 16°C
Low: 11°C
Aug
14°
High: 18°C
Avg: 14°C
Low: 9°C
Sep
10°
High: 13°C
Avg: 10°C
Low: 6°C
Oct
6°
High: 8°C
Avg: 6°C
Low: 4°C
Nov
4°
High: 6°C
Avg: 4°C
Low: 2°C
Dec
Avg High Avg Temp Avg Low

Precipitation

0 mm 150 mm 300 mm 450 mm 600 mm
599 mm
599.4 mm
Jan
348 mm
348.0 mm
Feb
409 mm
408.9 mm
Mar
259 mm
259.1 mm
Apr
147 mm
147.3 mm
May
94 mm
94.0 mm
Jun
46 mm
45.7 mm
Jul
91 mm
91.4 mm
Aug
147 mm
147.3 mm
Sep
353 mm
353.1 mm
Oct
533 mm
533.4 mm
Nov
490 mm
490.2 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec8.5h10h11.5h13.5h15h16h15.5h14h12.5h10.5h9h8h
Jan: 7:45 AM – 4:15 PM · 8h 30m
Feb: 7:02 AM – 4:58 PM · 9h 56m
Mar: 6:13 AM – 5:47 PM · 11h 34m
Apr: 5:17 AM – 6:43 PM · 13h 27m
May: 4:29 AM – 7:31 PM · 15h 02m
Jun: 4:03 AM – 7:57 PM · 15h 54m
Jul: 4:14 AM – 7:46 PM · 15h 33m
Aug: 4:55 AM – 7:05 PM · 14h 09m
Sep: 5:50 AM – 6:10 PM · 12h 20m
Oct: 6:44 AM – 5:16 PM · 10h 32m
Nov: 7:33 AM – 4:27 PM · 8h 54m
Dec: 7:57 AM – 4:03 PM · 8h 06m
Daylight Longest: 15h 56m · Shortest: 8h 04m

Nearby Stations

Cowichan Lake Forestry, BC April 21 - November 2 Nitinat River Hatchery, BC April 21 - October 23 Sheringham Point, BC February 15 - December 3 Duncan Kelvin Creek, BC April 25 - October 23 Shawnigan Lake, BC April 7 - November 6 Chemainus, BC March 10 - November 25

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