Chikuma Weather & Climate: Best Time to Visit

The climate in Chikuma, Nagano Prefecture, Japan, is marked by large temperature swings across the seasons, ranging from 29°C (84°F) in August to 3°C (37°F) in January.

The city has a wet climate, receiving around 2119 mm (83 in) of rain/snowfall per year. Despite the high annual total, it has a distinct rainy season from June to October. July is the wettest month. Sunshine peaks in May, when the city sees around 7.0 hours of sunshine per day.

Monthly Temperature in Chikuma

In Chikuma, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 29°C (84°F) in August to a chilly 3°C (37°F) in January.

Nighttime temperatures range from 19°C (66°F) in August to -6°C (21°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Chikuma

Chikuma experiences significant rain/snowfall throughout the year, averaging 2119 mm (83 in) of precipitation annually. The seasons in Chikuma bring significant changes in precipitation. The wettest month, July, receives heavy rainfall, with an average of 279 mm (11 in) of precipitation. This rainfall is distributed across 21 rainy days.

In contrast, the driest month, November, experiences much less rainfall, totaling 125 mm (4.9 in) over 16 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Chikuma Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Sunshine Hours in Chikuma

Chikuma enjoys sunny spells year-round. May sees up to 7.0 hours of daily sunshine, perfect for a sunny trip. January, the least sunny month, still offers a generous 4.3 hours of sun despite this cloudier time of the year.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Nagano, Japan (16 KM, 10 Miles).

Daily hours of sunshine

Data from: Nagano, Japan (16 KM, 10 Miles).

Humidity in Chikuma by Month

The relative humidity is high throughout the year in Chikuma.

The city experiences its highest humidity in January, reaching 78%. In April, the humidity drops to its lowest level at 61%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year

Data from: Nagano, Japan (16 KM, 10 Miles).

Chikuma 3-Day Forecast

10-Day Forecast

Select a Month

Check the conditions for any month of the year.

Best Time to Visit Chikuma

The best time to visit Chikuma is during May, August and October, when the weather provides comfortable temperatures between 18°C (65°F) and 29°C (83°F). With rainfall of 164 mm (6.5 in) to 192 mm (7.6 in), you can expect pleasant weather during your visit in these months.

Be prepared for heavier rainfall during May, June, July, August, September and October, the wettest period of the year.

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