Frost Dates for OTARU, Japan

Elevation: 15 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 14
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. November 16

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 April 20
First Fall Frost November 12

Hard Freeze (−2°C)

Last Spring Hard Freeze March 31
First Fall Hard Freeze November 26
43.18°N, 141.02°E © OpenStreetMap

Growing Season

216 Days April 14 to November 16

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.
Dfb Warm-Summer Continental

Warm summers and cold, snowy winters. A shorter growing season than hot-summer continental. Hardy vegetables, root crops, and cool-season greens do well. Season extension is valuable.

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
January-2°-4°-6°
February-2°-4°-5°
March2°0°-2°
April8°4°2°
May15°11°8°
June20°16°13°
July24°20°17°
August24°22°19°
September21°18°16°
October14°12°9°
November7°5°3°
December0°-1°-3°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January81
February71
March79
April71
May84
June74
July127
August163
September137
October107
November117
December107

Sunrise / Sunset

Daylight Longest: 15h 12m · Shortest: 8h 48m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:26 AM4:34 PM9h 09m
February6:51 AM5:09 PM10h 18m
March6:11 AM5:49 PM11h 39m
April5:24 AM6:36 PM13h 12m
May4:46 AM7:14 PM14h 29m
June4:25 AM7:35 PM15h 11m
July4:33 AM7:27 PM14h 54m
August5:07 AM6:53 PM13h 46m
September5:52 AM6:08 PM12h 17m
October6:37 AM5:23 PM10h 47m
November7:16 AM4:44 PM9h 28m
December7:36 AM4:24 PM8h 49m

Nearby Stations

SAPPORO, Japan April 23 - November 12 KUTCHAN, Japan April 29 - November 4 IWAMIZAWA, Japan April 30 - October 31 CHITOSE HOKKAIDO, Japan April 24 - November 7 TOMAKOMAI, Japan April 15 - November 18 SUTTSU, Japan April 10 - November 17

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