Climate Insights for Nagato

Nagato Shi, Yamaguchi, Japan

Hottest
August
30°C peak
Coldest
February
6°C low
Wettest
July
259mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Nagato is temperate. The average annual temperature is 17°C and approximately 1772mm of precipitation falls per year. Nagato receives a notable amount of rainfall throughout the year, including during its driest month. Nagato 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 February, January, December, when temperatures can drop to 6°C. Light snow can occur between January and December.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 9° Average: 8° Min: 6° Feb Max: 10° Average: 8° Min: 6° Mar Max: 13° Average: 11° Min: 9° Apr Max: 17° Average: 15° Min: 13° May Max: 21° Average: 19° Min: 17° Jun Max: 24° Average: 22° Min: 20° Jul Max: 27° Average: 26° Min: 24° Aug Max: 30° Average: 28° Min: 26° Sep Max: 26° Average: 24° Min: 22° Oct Max: 21° Average: 19° Min: 18° Nov Max: 17° Average: 15° Min: 12° Dec Max: 11° Average: 10° Min: 8°
Max
Average
Min

Temperatures in Nagato vary considerably across the year, with a 24°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 28°C. February is the coolest month, with minimum temperatures around 6°C and an average of 8°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between November and December, with a 5°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 102mm Snow: 8mm Feb Precipitation: 84mm Snow: 3mm Mar Precipitation: 140mm Snow: 0mm Apr Precipitation: 145mm Snow: 0mm May Precipitation: 108mm Snow: 0mm Jun Precipitation: 230mm Snow: 0mm Jul Precipitation: 259mm Snow: 0mm Aug Precipitation: 168mm Snow: 0mm Sep Precipitation: 257mm Snow: 0mm Oct Precipitation: 128mm Snow: 0mm Nov Precipitation: 52mm Snow: 0mm Dec Precipitation: 99mm Snow: 1mm
Precipitation
Snow

Nagato is a fairly wet location, receiving approximately 1772mm of precipitation annually, which averages out to around 148mm per month. The wettest month is July, averaging 259mm of rainfall. September and June also tend to see above-average precipitation. The driest month is November, with just 52mm. That's 207mm 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. Light snowfall can occur between January and December, totalling around 12cm annually. January is the snowiest month with approximately 8cm.

Wind

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

Nagato is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

Seasons

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

92 days until Autumn

It is currently summer in Nagato, which began on June 21, 2026. Nagato 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 February near 6°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

Spring

Temperatures range from 9 to 21°C. Rainfall is heavy, totalling around 393mm across the season with a monthly average of 131mm. Winds are generally light, averaging 5km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 20 to 30°C. Rainfall is heavy, totalling around 657mm across the season with a monthly average of 219mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 12 to 26°C. Rainfall is heavy, totalling around 436mm across the season with a monthly average of 145mm. 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 11°C. Precipitation is moderate at around 286mm for the season, averaging 95mm per month. Expect around 12cm of snow accumulation during this period. Winds are generally light, averaging 6km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Monthly Climate Data

The table below shows monthly climate averages for Nagato 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
9 °C
6 km/h
102 mm
8 cm
Feb
6 °C
10 °C
6 km/h
84 mm
3 cm
Mar
9 °C
13 °C
5 km/h
140 mm
0 cm
Apr
13 °C
17 °C
5 km/h
145 mm
0 cm
May
17 °C
21 °C
5 km/h
108 mm
0 cm
Jun Current
20 °C
24 °C
4 km/h
230 mm
0 cm
Jul
24 °C
27 °C
4 km/h
259 mm
0 cm
Aug
26 °C
30 °C
5 km/h
168 mm
0 cm
Sep
22 °C
26 °C
5 km/h
257 mm
0 cm
Oct
18 °C
21 °C
5 km/h
128 mm
0 cm
Nov
12 °C
17 °C
5 km/h
52 mm
0 cm
Dec
8 °C
11 °C
6 km/h
99 mm
1 cm
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