Climate Insights for Ogunimachi

Nishiokitama-gun, Yamagata-ken, Japan

Hottest
August
28°C peak
Coldest
January
-4°C low
Wettest
July
284mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Ogunimachi is temperate. The average annual temperature is 11°C and approximately 2192mm of precipitation falls per year. Ogunimachi receives a notable amount of rainfall throughout the year, including during its driest month. Ogunimachi 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. Ogunimachi 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: -1° Min: -4° Feb Max: 3° Average: 0° Min: -3° Mar Max: 7° Average: 3° Min: 0° Apr Max: 15° Average: 10° Min: 5° May Max: 20° Average: 15° Min: 11° Jun Max: 23° Average: 19° Min: 16° Jul Max: 27° Average: 23° Min: 20° Aug Max: 28° Average: 24° Min: 21° Sep Max: 24° Average: 20° Min: 17° Oct Max: 17° Average: 13° Min: 10° Nov Max: 11° Average: 7° Min: 4° Dec Max: 4° Average: 1° Min: -1°
Max
Average
Min

Temperatures in Ogunimachi vary considerably across the year, with a 32°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 24°C. The coldest month is January, when overnight lows fall to -4°C and the daily average is -1°C. Daily temperature variation is modest, with an average difference of 7°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 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 211mm Snow: 120mm Feb Precipitation: 157mm Snow: 80mm Mar Precipitation: 155mm Snow: 43mm Apr Precipitation: 143mm Snow: 7mm May Precipitation: 134mm Snow: 0mm Jun Precipitation: 190mm Snow: 0mm Jul Precipitation: 284mm Snow: 0mm Aug Precipitation: 222mm Snow: 0mm Sep Precipitation: 183mm Snow: 0mm Oct Precipitation: 138mm Snow: 0mm Nov Precipitation: 155mm Snow: 13mm Dec Precipitation: 221mm Snow: 92mm
Precipitation
Snow

Ogunimachi is a very wet location, receiving approximately 2192mm of precipitation annually, which averages out to around 183mm per month. The wettest month is July, averaging 284mm of rainfall. August and December also tend to see above-average precipitation. The driest month is May, with just 134mm. That's 150mm 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. Ogunimachi receives heavy snowfall, accumulating around 355cm annually from January through December. The snowiest month is January, with approximately 120cm. Winter travel should account for significant snow cover.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 15km/h Feb Wind Speed: 16km/h Mar Wind Speed: 15km/h Apr Wind Speed: 15km/h May Wind Speed: 13km/h Jun Wind Speed: 11km/h Jul Wind Speed: 10km/h Aug Wind Speed: 10km/h Sep Wind Speed: 11km/h Oct Wind Speed: 12km/h Nov Wind Speed: 13km/h Dec Wind Speed: 14km/h
Wind Speed

Ogunimachi is mildly breezy, with an average annual wind speed of 13km/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 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/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 15km/h in winter, 14km/h in spring, 11km/h in summer, 12km/h in autumn.

Seasons

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

88 days until Summer

It is currently spring in Ogunimachi, which began on March 20, 2026. Ogunimachi 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 -4°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

Spring

Temperatures range from 0 to 20°C. Rainfall is heavy, totalling around 432mm across the season with a monthly average of 144mm. Winds are generally light, averaging 14km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 16 to 28°C. Rainfall is heavy, totalling around 696mm across the season with a monthly average of 232mm. Winds are generally light, averaging 11km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 4 to 24°C. Rainfall is heavy, totalling around 475mm across the season with a monthly average of 158mm. Expect around 13cm of snow accumulation during this period. Winds are generally light, averaging 12km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from -4 to 4°C. Rainfall is heavy, totalling around 589mm across the season with a monthly average of 196mm. Expect around 291cm of snow accumulation during this period. Winds are generally light, averaging 15km/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 Ogunimachi 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
1 °C
15 km/h
211 mm
120 cm
Feb
-3 °C
3 °C
16 km/h
157 mm
80 cm
Mar Current
0 °C
7 °C
15 km/h
155 mm
43 cm
Apr
5 °C
15 °C
15 km/h
143 mm
7 cm
May
11 °C
20 °C
13 km/h
134 mm
0 cm
Jun
16 °C
23 °C
11 km/h
190 mm
0 cm
Jul
20 °C
27 °C
10 km/h
284 mm
0 cm
Aug
21 °C
28 °C
10 km/h
222 mm
0 cm
Sep
17 °C
24 °C
11 km/h
183 mm
0 cm
Oct
10 °C
17 °C
12 km/h
138 mm
0 cm
Nov
4 °C
11 °C
13 km/h
155 mm
13 cm
Dec
-1 °C
4 °C
14 km/h
221 mm
92 cm
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Metric (°C, km/h)