Climate Insights for Ashoro

Ashoro-gun, Hokkaido, Japan

Hottest
August
22°C peak
Coldest
January
-13°C low
Wettest
August
188mm rain
Best to Visit
July
Mild temps & low rain

Climate Overview

The climate in Ashoro is cool. The average annual temperature is 6°C and approximately 1142mm of precipitation falls per year. Ashoro receives a notable amount of rainfall throughout the year, including during its driest month. Ashoro 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 -13°C. Snowfall occurs from January to December, with around 169cm accumulating over the season.

Temperature

-20° -10° 10° 20° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: -4° Average: -9° Min: -13° Feb Max: -3° Average: -8° Min: -12° Mar Max: 3° Average: -1° Min: -5° Apr Max: 10° Average: 5° Min: 1° May Max: 16° Average: 11° Min: 7° Jun Max: 18° Average: 14° Min: 11° Jul Max: 22° Average: 19° Min: 16° Aug Max: 22° Average: 19° Min: 16° Sep Max: 20° Average: 16° Min: 12° Oct Max: 13° Average: 9° Min: 5° Nov Max: 6° Average: 2° Min: -2° Dec Max: -2° Average: -6° Min: -9°
Max
Average
Min

Temperatures in Ashoro 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 22°C with a mean of 19°C. The coldest month is January, when overnight lows fall to -13°C and the daily average is -9°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between November and December, with a 7°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: 46mm Snow: 33mm Feb Precipitation: 44mm Snow: 29mm Mar Precipitation: 87mm Snow: 40mm Apr Precipitation: 87mm Snow: 19mm May Precipitation: 88mm Snow: 1mm Jun Precipitation: 113mm Snow: 0mm Jul Precipitation: 98mm Snow: 0mm Aug Precipitation: 188mm Snow: 0mm Sep Precipitation: 118mm Snow: 0mm Oct Precipitation: 131mm Snow: 3mm Nov Precipitation: 90mm Snow: 16mm Dec Precipitation: 53mm Snow: 26mm
Precipitation
Snow

Ashoro is a moderately rainy area, receiving approximately 1142mm of precipitation annually, which averages out to around 95mm per month. The wettest month is August, averaging 188mm of rainfall. October and September also tend to see above-average precipitation. The driest month is February, with just 44mm. That's 144mm 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. Snowfall is a regular feature from January to December, with around 169cm accumulating over the season. March typically sees the most snow at around 40cm.

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: 17km/h Apr Wind Speed: 17km/h May Wind Speed: 16km/h Jun Wind Speed: 13km/h Jul Wind Speed: 11km/h Aug Wind Speed: 12km/h Sep Wind Speed: 13km/h Oct Wind Speed: 16km/h Nov Wind Speed: 16km/h Dec Wind Speed: 16km/h
Wind Speed

Ashoro is mildly breezy, with an average annual wind speed of 15km/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 17km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 11km/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 16km/h in winter, 17km/h in spring, 12km/h in summer, 15km/h in autumn.

Seasons

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

89 days until Summer

It is currently spring in Ashoro, which began on March 20, 2026. Ashoro 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 22°C, while the coldest stretch bottoms out in January near -13°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

Spring

Temperatures range from -5 to 16°C. Precipitation is moderate at around 261mm for the season, averaging 87mm per month. Winds are moderate at around 17km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 11 to 22°C. Rainfall is heavy, totalling around 399mm across the season with a monthly average of 133mm. Winds are generally light, averaging 12km/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 339mm across the season with a monthly average of 113mm. Expect around 19cm of snow accumulation during this period. Winds are generally light, averaging 15km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from -13 to -2°C. Rainfall is relatively light, with around 143mm over the season and a monthly average of 48mm. Expect around 89cm of snow accumulation during this period. Winds are moderate at around 16km/h. Heavy layering and insulated outerwear are essential — exposed skin should be minimised outdoors.

Best Time to Visit

Jan -9°
Feb -8°
Mar -1°
Apr
May 11°
Jun 14°
Jul 19°
Aug 19°
Sep 16°
Oct
Nov
Dec -6°

The best time to visit Ashoro is during July, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 98mm per month. By contrast, August can be uncomfortably hot with highs reaching 22°C, while January is the coldest period with lows dropping to -13°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 Ashoro 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
-13 °C
-4 °C
15 km/h
46 mm
33 cm
Feb
-12 °C
-3 °C
16 km/h
44 mm
29 cm
Mar Current
-5 °C
3 °C
17 km/h
87 mm
40 cm
Apr
1 °C
10 °C
17 km/h
87 mm
19 cm
May
7 °C
16 °C
16 km/h
88 mm
1 cm
Jun
11 °C
18 °C
13 km/h
113 mm
0 cm
Jul
16 °C
22 °C
11 km/h
98 mm
0 cm
Aug
16 °C
22 °C
12 km/h
188 mm
0 cm
Sep
12 °C
20 °C
13 km/h
118 mm
0 cm
Oct
5 °C
13 °C
16 km/h
131 mm
3 cm
Nov
-2 °C
6 °C
16 km/h
90 mm
16 cm
Dec
-9 °C
-2 °C
16 km/h
53 mm
26 cm
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Metric (°C, km/h)