Frost Dates for AOMORI, Japan

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. November 21
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 16
First Fall Frost November 17

Hard Freeze (−2°C)

Last Spring Hard Freeze March 30
First Fall Hard Freeze December 1
40.82°N, 140.77°W © OpenStreetMap

Growing Season

224 Days April 11 to November 21

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 8a

Avg. annual minimum: −12 to −9°C

Learn more

Köppen Climate iThe 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

-10° 0° 10° 20° 30°
-3°
High: 0°C
Avg: -3°C
Low: -6°C
Jan
-2°
High: 1°C
Avg: -2°C
Low: -5°C
Feb
1°
High: 5°C
Avg: 1°C
Low: -2°C
Mar
8°
High: 13°C
Avg: 8°C
Low: 4°C
Apr
14°
High: 19°C
Avg: 14°C
Low: 10°C
May
18°
High: 23°C
Avg: 18°C
Low: 15°C
Jun
22°
High: 26°C
Avg: 22°C
Low: 19°C
Jul
23°
High: 27°C
Avg: 23°C
Low: 21°C
Aug
19°
High: 23°C
Avg: 19°C
Low: 17°C
Sep
13°
High: 17°C
Avg: 13°C
Low: 10°C
Oct
6°
High: 10°C
Avg: 6°C
Low: 4°C
Nov
0°
High: 3°C
Avg: 0°C
Low: -3°C
Dec
0°C
−2°C
Avg High Avg Temp Avg Low Light Frost (0°C) Hard Frost (−2°C)

Precipitation

0 mm 50 mm 100 mm 150 mm
84 mm
83.8 mm
Jan
74 mm
73.7 mm
Feb
94 mm
94.0 mm
Mar
89 mm
88.9 mm
Apr
99 mm
99.1 mm
May
107 mm
106.7 mm
Jun
157 mm
157.5 mm
Jul
168 mm
167.6 mm
Aug
147 mm
147.3 mm
Sep
107 mm
106.7 mm
Oct
97 mm
96.5 mm
Nov
91 mm
91.4 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14.5h15h14.5h13.5h12.5h11h9.5h9h
Jan: 7:19 AM – 4:41 PM · 9h 23m
Feb: 6:47 AM – 5:13 PM · 10h 26m
Mar: 6:10 AM – 5:50 PM · 11h 41m
Apr: 5:27 AM – 6:33 PM · 13h 06m
May: 4:52 AM – 7:08 PM · 14h 17m
Jun: 4:33 AM – 7:27 PM · 14h 55m
Jul: 4:40 AM – 7:20 PM · 14h 39m
Aug: 5:11 AM – 6:49 PM · 13h 38m
Sep: 5:52 AM – 6:08 PM · 12h 15m
Oct: 6:34 AM – 5:26 PM · 10h 53m
Nov: 7:10 AM – 4:50 PM · 9h 40m
Dec: 7:28 AM – 4:32 PM · 9h 05m
Daylight Longest: 14h 56m · Shortest: 9h 04m

Nearby Stations

MISAWA, Japan April 14 - November 17 MUTSU, Japan March 27 - November 29 HACHINOHE, Japan April 11 - November 19 FUKAURA, Japan April 1 - November 29 HAKODATE, Japan April 8 - November 21 ESASHI, Japan April 3 - November 22

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