Climate Insights for Nanto

Nanto Shi, Toyama-ken, Japan

Hottest
August
30°C peak
Coldest
January
-4°C low
Wettest
July
348mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Nanto is temperate. The average annual temperature is 13°C and approximately 2894mm of precipitation falls per year. Nanto receives a notable amount of rainfall throughout the year, including during its driest month. Nanto 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 -4°C. Nanto 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: 3° Average: 0° Min: -4° Feb Max: 4° Average: 1° Min: -3° Mar Max: 10° Average: 5° Min: 1° Apr Max: 17° Average: 11° Min: 7° May Max: 22° Average: 16° Min: 12° Jun Max: 25° Average: 20° Min: 16° Jul Max: 29° Average: 25° Min: 21° Aug Max: 30° Average: 26° Min: 22° Sep Max: 26° Average: 21° Min: 18° Oct Max: 19° Average: 14° Min: 11° Nov Max: 13° Average: 8° Min: 5° Dec Max: 6° Average: 2° Min: -1°
Max
Average
Min

Temperatures in Nanto 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 30°C and the mean temperature sits around 26°C. The coldest month is January, when overnight lows fall to -4°C and the daily average is 0°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 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 230mm Snow: 145mm Feb Precipitation: 191mm Snow: 115mm Mar Precipitation: 194mm Snow: 62mm Apr Precipitation: 204mm Snow: 9mm May Precipitation: 185mm Snow: 0mm Jun Precipitation: 255mm Snow: 0mm Jul Precipitation: 348mm Snow: 0mm Aug Precipitation: 275mm Snow: 0mm Sep Precipitation: 323mm Snow: 0mm Oct Precipitation: 238mm Snow: 0mm Nov Precipitation: 191mm Snow: 17mm Dec Precipitation: 258mm Snow: 119mm
Precipitation
Snow

Nanto is a very wet location, receiving approximately 2894mm of precipitation annually, which averages out to around 241mm per month. The wettest month is July, averaging 348mm of rainfall. September and August also tend to see above-average precipitation. The driest month is May, with just 185mm. That's 163mm less than July, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Nanto receives heavy snowfall, accumulating around 467cm annually from January through December. The snowiest month is January, with approximately 145cm. 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: 8km/h Apr Wind Speed: 8km/h May Wind Speed: 7km/h Jun Wind Speed: 6km/h Jul Wind Speed: 5km/h Aug Wind Speed: 5km/h Sep Wind Speed: 5km/h Oct Wind Speed: 6km/h Nov Wind Speed: 7km/h Dec Wind Speed: 7km/h
Wind Speed

Nanto is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 5km/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.

Seasons

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

3 days until Autumn

It is currently summer in Nanto, which began on June 21, 2026. Nanto 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 30°C, while the coldest stretch bottoms out in January near -4°C. Autumn is next, beginning on September 23, 2026 (3 days from now).

Spring

Temperatures range from 1 to 22°C. Rainfall is heavy, totalling around 584mm across the season with a monthly average of 195mm. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 16 to 30°C. Rainfall is heavy, totalling around 878mm across the season with a monthly average of 293mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from 5 to 26°C. Rainfall is heavy, totalling around 753mm across the season with a monthly average of 251mm. Expect around 17cm of snow accumulation during this period. Winds are generally light, averaging 6km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from -4 to 6°C. Rainfall is heavy, totalling around 679mm across the season with a monthly average of 226mm. Expect around 379cm 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 Nanto 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
-4 °C
3 °C
7 km/h
230 mm
145 cm
Feb
-3 °C
4 °C
7 km/h
191 mm
115 cm
Mar
1 °C
10 °C
8 km/h
194 mm
62 cm
Apr
7 °C
17 °C
8 km/h
204 mm
9 cm
May
12 °C
22 °C
7 km/h
185 mm
0 cm
Jun
16 °C
25 °C
6 km/h
255 mm
0 cm
Jul
21 °C
29 °C
5 km/h
348 mm
0 cm
Aug
22 °C
30 °C
5 km/h
275 mm
0 cm
Sep Current
18 °C
26 °C
5 km/h
323 mm
0 cm
Oct
11 °C
19 °C
6 km/h
238 mm
0 cm
Nov
5 °C
13 °C
7 km/h
191 mm
17 cm
Dec
-1 °C
6 °C
7 km/h
258 mm
119 cm
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Metric (°C, km/h)