Frost Dates for SUWA, Japan

Elevation: 765 m

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 17
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 15
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 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°W © OpenStreetMap

Growing Season

212 Days April 17 to November 15

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 7b

Avg. annual minimum: −15 to −12°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°
-2°
High: 2°C
Avg: -2°C
Low: -6°C
Jan
-1°
High: 3°C
Avg: -1°C
Low: -5°C
Feb
3°
High: 7°C
Avg: 3°C
Low: -2°C
Mar
9°
High: 14°C
Avg: 9°C
Low: 4°C
Apr
15°
High: 20°C
Avg: 15°C
Low: 10°C
May
19°
High: 23°C
Avg: 19°C
Low: 15°C
Jun
22°
High: 26°C
Avg: 22°C
Low: 18°C
Jul
23°
High: 28°C
Avg: 23°C
Low: 19°C
Aug
19°
High: 24°C
Avg: 19°C
Low: 16°C
Sep
13°
High: 18°C
Avg: 13°C
Low: 9°C
Oct
7°
High: 12°C
Avg: 7°C
Low: 3°C
Nov
1°
High: 5°C
Avg: 1°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 200 mm
84 mm
83.8 mm
Jan
89 mm
88.9 mm
Feb
140 mm
139.7 mm
Mar
124 mm
124.5 mm
Apr
132 mm
132.1 mm
May
183 mm
182.9 mm
Jun
188 mm
188.0 mm
Jul
127 mm
127.0 mm
Aug
163 mm
162.6 mm
Sep
170 mm
170.2 mm
Oct
97 mm
96.5 mm
Nov
86 mm
86.4 mm
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec10h10.5h11.5h13h14h14.5h14h13.5h12h11h10h9.5h
Jan: 7:06 AM – 4:54 PM · 9h 48m
Feb: 6:40 AM – 5:20 PM · 10h 41m
Mar: 6:08 AM – 5:52 PM · 11h 44m
Apr: 5:32 AM – 6:28 PM · 12h 55m
May: 5:03 AM – 6:57 PM · 13h 55m
Jun: 4:47 AM – 7:13 PM · 14h 26m
Jul: 4:53 AM – 7:07 PM · 14h 13m
Aug: 5:19 AM – 6:41 PM · 13h 22m
Sep: 5:54 AM – 6:06 PM · 12h 13m
Oct: 6:28 AM – 5:32 PM · 11h 03m
Nov: 6:59 AM – 5:01 PM · 10h 03m
Dec: 7:13 AM – 4:47 PM · 9h 34m
Daylight Longest: 14h 27m · Shortest: 9h 33m

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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