Climate Insights for Iiyama

Iiyama Shi, Nagano-ken, Japan

Based on 10 years of historical weather data

Current Season

What season is it in Iiyama?

Astronomical Season

winter

Based on Earth's position relative to the sun

Meteorological Season

winter

Based on temperature cycles and weather patterns

spring begins on March 20, 2026 (66 days from now)

Season Timeline for 2026

spring
Mar 20
Next
summer
Jun 21
Future
fall
Sep 23
Future
winter
Dec 21
Current

Hottest Month

August
Peak: 28°C
Average: 24°C

Coldest Month

January
Low: -5°C
Average: -2°C

Wettest Month

July
279 mm rain

Best Time to Visit

Climate varies throughout the year
Monthly Climate Data
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan Current
-5 °C
2 °C
10 km/h
156 mm
92 cm
Feb
-4 °C
3 °C
10 km/h
120 mm
62 cm
Mar
0 °C
9 °C
10 km/h
121 mm
41 cm
Apr
5 °C
15 °C
11 km/h
138 mm
7 cm
May
10 °C
21 °C
10 km/h
144 mm
0 cm
Jun
15 °C
23 °C
9 km/h
182 mm
0 cm
Jul
19 °C
27 °C
7 km/h
279 mm
0 cm
Aug
20 °C
28 °C
8 km/h
197 mm
0 cm
Sep
16 °C
24 °C
9 km/h
201 mm
0 cm
Oct
9 °C
17 °C
9 km/h
157 mm
0 cm
Nov
3 °C
12 °C
9 km/h
121 mm
11 cm
Dec
-2 °C
5 °C
9 km/h
152 mm
67 cm
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Metric (°C, km/h)
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