Climate Insights for Nishiokoppe

Monbetsu Gun, Hokkaido, Japan

Hottest
August
23°C peak
Coldest
January
-12°C low
Wettest
August
188mm rain
Best to Visit
September
Mild temps & low rain

Climate Overview

The climate in Nishiokoppe is cool. The average annual temperature is 6°C and approximately 1193mm of precipitation falls per year. Nishiokoppe receives a notable amount of rainfall throughout the year, including during its driest month. Nishiokoppe 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 -12°C. Nishiokoppe experiences heavy snowfall, typically from January through December.

Temperature

-20° -10° 10° 20° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: -5° Average: -8° Min: -12° Feb Max: -4° Average: -7° Min: -11° Mar Max: 2° Average: -2° Min: -6° Apr Max: 9° Average: 4° Min: 0° May Max: 17° Average: 12° Min: 7° Jun Max: 18° Average: 14° Min: 11° Jul Max: 23° Average: 19° Min: 15° Aug Max: 23° Average: 19° Min: 16° Sep Max: 20° Average: 15° Min: 12° Oct Max: 13° Average: 8° Min: 5° Nov Max: 4° Average: 1° Min: -2° Dec Max: -2° Average: -5° Min: -8°
Max
Average
Min

Temperatures in Nishiokoppe vary considerably across the year, with a 35°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 23°C with a mean of 19°C. The coldest month is January, when overnight lows fall to -12°C and the daily average is -8°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between October and November, with a 8°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 85mm Snow: 84mm Feb Precipitation: 67mm Snow: 65mm Mar Precipitation: 76mm Snow: 57mm Apr Precipitation: 72mm Snow: 33mm May Precipitation: 80mm Snow: 0mm Jun Precipitation: 115mm Snow: 0mm Jul Precipitation: 114mm Snow: 0mm Aug Precipitation: 188mm Snow: 0mm Sep Precipitation: 85mm Snow: 0mm Oct Precipitation: 115mm Snow: 15mm Nov Precipitation: 107mm Snow: 63mm Dec Precipitation: 89mm Snow: 80mm
Precipitation
Snow

Nishiokoppe is a moderately rainy area, receiving approximately 1193mm of precipitation annually, which averages out to around 99mm per month. The wettest month is August, averaging 188mm of rainfall. June and October also tend to see above-average precipitation. The driest month is February, with just 67mm. That's 121mm less than August, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Nishiokoppe receives heavy snowfall, accumulating around 396cm annually from January through December. The snowiest month is January, with approximately 84cm. Winter travel should account for significant snow cover.

Wind

0km/h 5km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 3km/h Feb Wind Speed: 3km/h Mar Wind Speed: 3km/h Apr Wind Speed: 3km/h May Wind Speed: 3km/h Jun Wind Speed: 2km/h Jul Wind Speed: 2km/h Aug Wind Speed: 2km/h Sep Wind Speed: 3km/h Oct Wind Speed: 3km/h Nov Wind Speed: 4km/h Dec Wind Speed: 4km/h
Wind Speed

Nishiokoppe is relatively calm, with an average annual wind speed of 3km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 2km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.

Seasons

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

88 days until Autumn

It is currently summer in Nishiokoppe, which began on June 21, 2026. Nishiokoppe 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 23°C, while the coldest stretch bottoms out in January near -12°C. Autumn is next, beginning on September 23, 2026 — 88 days from now.

Spring

Temperatures range from -6 to 17°C. Precipitation is moderate at around 229mm for the season, averaging 76mm per month. Winds are generally light, averaging 3km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 11 to 23°C. Rainfall is heavy, totalling around 417mm across the season with a monthly average of 139mm. Winds are generally light, averaging 2km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from -2 to 20°C. Rainfall is heavy, totalling around 307mm across the season with a monthly average of 102mm. Expect around 78cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from -12 to -2°C. Precipitation is moderate at around 241mm for the season, averaging 80mm per month. Expect around 229cm of snow accumulation during this period. Winds are generally light, averaging 3km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.

Best Time to Visit

Jan -8°
Feb -7°
Mar -2°
Apr
May 12°
Jun 14°
Jul 19°
Aug 19°
Sep 15°
Oct
Nov
Dec -5°

The best time to visit Nishiokoppe is during September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 15°C with modest rainfall averaging 85mm per month. By contrast, August can be uncomfortably hot with highs reaching 23°C, while January is the coldest period with lows dropping to -12°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Nishiokoppe 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
-12 °C
-5 °C
3 km/h
85 mm
84 cm
Feb
-11 °C
-4 °C
3 km/h
67 mm
65 cm
Mar
-6 °C
2 °C
3 km/h
76 mm
57 cm
Apr
0 °C
9 °C
3 km/h
72 mm
33 cm
May
7 °C
17 °C
3 km/h
80 mm
0 cm
Jun Current
11 °C
18 °C
2 km/h
115 mm
0 cm
Jul
15 °C
23 °C
2 km/h
114 mm
0 cm
Aug
16 °C
23 °C
2 km/h
188 mm
0 cm
Sep
12 °C
20 °C
3 km/h
85 mm
0 cm
Oct
5 °C
13 °C
3 km/h
115 mm
15 cm
Nov
-2 °C
4 °C
4 km/h
107 mm
63 cm
Dec
-8 °C
-2 °C
4 km/h
89 mm
80 cm
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