Frost Dates for SUWA, Japan

Elevation: 765 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 17
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 15

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 21
First Fall Frost November 10

Hard Freeze (−2°C)

Last Spring Hard Freeze April 2
First Fall Hard Freeze November 30
36.05°N, 138.12°E © OpenStreetMap

Growing Season

212 Days April 17 to November 15

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 7b

Avg. annual minimum: −15 to −12°C

Learn more

Köppen Climate

The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Dfa Hot-Summer Continental

Hot summers and cold winters with year-round precipitation. Moderate growing season supports warm-season crops like tomatoes, peppers, and corn. Winter protection extends the harvest.

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
January2°-2°-6°
February3°-1°-5°
March7°3°-2°
April14°9°4°
May20°15°10°
June23°19°15°
July26°22°18°
August28°23°19°
September24°19°16°
October18°13°9°
November12°7°3°
December5°1°-3°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January84
February89
March140
April124
May132
June183
July188
August127
September163
October170
November97
December86

Sunrise / Sunset

Daylight Longest: 14h 27m · Shortest: 9h 33m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (local solar time)
Month Sunrise Sunset Daylight
January7:06 AM4:54 PM9h 48m
February6:40 AM5:20 PM10h 41m
March6:08 AM5:52 PM11h 44m
April5:32 AM6:28 PM12h 55m
May5:03 AM6:57 PM13h 55m
June4:47 AM7:13 PM14h 26m
July4:53 AM7:07 PM14h 13m
August5:19 AM6:41 PM13h 22m
September5:54 AM6:06 PM12h 13m
October6:28 AM5:32 PM11h 03m
November6:59 AM5:01 PM10h 03m
December7:13 AM4:47 PM9h 34m

Nearby Stations

MATSUMOTO, Japan April 18 - November 14 KARUIZAWA, Japan April 19 - November 12 KOFU, JapanMarch 30 - December 7 IIDA, JapanApril 5 - November 27 NAGANO, Japan April 14 - November 16 TAKAYAMA, Japan April 19 - November 11

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