Climate Insights for Chikuma

Chikuma Shi, Nagano-ken, Japan

Hottest
August
28°C peak
Coldest
January
-6°C low
Wettest
July
375mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Chikuma is temperate. The average annual temperature is 10°C and approximately 2615mm of precipitation falls per year. Chikuma receives a notable amount of rainfall throughout the year, including during its driest month. Chikuma is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to -6°C. Chikuma experiences heavy snowfall, typically from January through December.

Temperature

-10° 10° 20° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 1° Average: -3° Min: -6° Feb Max: 3° Average: -1° Min: -5° Mar Max: 8° Average: 4° Min: 0° Apr Max: 15° Average: 9° Min: 5° May Max: 20° Average: 15° Min: 10° Jun Max: 23° Average: 18° Min: 14° Jul Max: 27° Average: 22° Min: 19° Aug Max: 28° Average: 23° Min: 20° Sep Max: 24° Average: 19° Min: 16° Oct Max: 17° Average: 12° Min: 9° Nov Max: 11° Average: 6° Min: 2° Dec Max: 4° Average: 0° Min: -3°
Max
Average
Min

Temperatures in Chikuma vary considerably across the year, with a 34°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 28°C and the mean temperature sits around 23°C. The coldest month is January, when overnight lows fall to -6°C and the daily average is -3°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 161mm Snow: 130mm Feb Precipitation: 139mm Snow: 100mm Mar Precipitation: 165mm Snow: 79mm Apr Precipitation: 184mm Snow: 14mm May Precipitation: 216mm Snow: 0mm Jun Precipitation: 274mm Snow: 0mm Jul Precipitation: 375mm Snow: 0mm Aug Precipitation: 255mm Snow: 0mm Sep Precipitation: 297mm Snow: 0mm Oct Precipitation: 231mm Snow: 0mm Nov Precipitation: 151mm Snow: 25mm Dec Precipitation: 168mm Snow: 104mm
Precipitation
Snow

Chikuma is a very wet location, receiving approximately 2615mm of precipitation annually, which averages out to around 218mm per month. The wettest month is July, averaging 375mm of rainfall. September and June also tend to see above-average precipitation. The driest month is February, with just 139mm. That's 236mm less than July, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Chikuma receives heavy snowfall, accumulating around 451cm annually from January through December. The snowiest month is January, with approximately 130cm. Winter travel should account for significant snow cover.

Wind

0km/h 5km/h 10km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 7km/h Feb Wind Speed: 7km/h Mar Wind Speed: 7km/h Apr Wind Speed: 6km/h May Wind Speed: 6km/h Jun Wind Speed: 5km/h Jul Wind Speed: 4km/h Aug Wind Speed: 5km/h Sep Wind Speed: 5km/h Oct Wind Speed: 5km/h Nov Wind Speed: 6km/h Dec Wind Speed: 7km/h
Wind Speed

Chikuma is relatively calm, with an average annual wind speed of 6km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 7km/h in winter, 6km/h in spring, 5km/h in summer, 5km/h in autumn.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

3 days until Autumn

It is currently summer in Chikuma, which began on June 21, 2026. Chikuma is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 28°C, while the coldest stretch bottoms out in January near -6°C. Autumn is next, beginning on September 23, 2026 (3 days from now).

Spring

Temperatures range from 0 to 20°C. Rainfall is heavy, totalling around 565mm across the season with a monthly average of 188mm. Winds are generally light, averaging 6km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 14 to 28°C. Rainfall is heavy, totalling around 904mm across the season with a monthly average of 301mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from 2 to 24°C. Rainfall is heavy, totalling around 679mm across the season with a monthly average of 226mm. Expect around 25cm of snow accumulation during this period. Winds are generally light, averaging 5km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from -6 to 4°C. Rainfall is heavy, totalling around 467mm across the season with a monthly average of 156mm. Expect around 334cm of snow accumulation during this period. Winds are generally light, averaging 7km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.

Monthly Climate Data

The table below shows monthly climate averages for Chikuma based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
-6 °C
1 °C
7 km/h
161 mm
130 cm
Feb
-5 °C
3 °C
7 km/h
139 mm
100 cm
Mar
0 °C
8 °C
7 km/h
165 mm
79 cm
Apr
5 °C
15 °C
6 km/h
184 mm
14 cm
May
10 °C
20 °C
6 km/h
216 mm
0 cm
Jun
14 °C
23 °C
5 km/h
274 mm
0 cm
Jul
19 °C
27 °C
4 km/h
375 mm
0 cm
Aug
20 °C
28 °C
5 km/h
255 mm
0 cm
Sep Current
16 °C
24 °C
5 km/h
297 mm
0 cm
Oct
9 °C
17 °C
5 km/h
231 mm
0 cm
Nov
2 °C
11 °C
6 km/h
151 mm
25 cm
Dec
-3 °C
4 °C
7 km/h
168 mm
104 cm
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Metric (°C, km/h)