Climate Insights for Komoro

Komoro Shi, Nagano-ken, Japan

Hottest
August
28°C peak
Coldest
January
-3°C low
Wettest
July
238mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Komoro is temperate. The average annual temperature is 11°C and approximately 1590mm of precipitation falls per year. Komoro receives a notable amount of rainfall throughout the year, including during its driest month. Komoro 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 -3°C. Snowfall occurs from January to December, with around 135cm accumulating over the season.

Temperature

-10° 10° 20° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 4° Average: 0° Min: -3° Feb Max: 5° Average: 1° Min: -3° Mar Max: 10° Average: 5° Min: 0° Apr Max: 16° Average: 10° Min: 5° May Max: 20° Average: 15° Min: 10° Jun Max: 23° Average: 19° Min: 15° Jul Max: 27° Average: 23° Min: 19° Aug Max: 28° Average: 24° Min: 20° Sep Max: 24° Average: 20° Min: 16° Oct Max: 17° Average: 13° Min: 9° Nov Max: 12° Average: 7° Min: 3° Dec Max: 6° Average: 2° Min: -1°
Max
Average
Min

Temperatures in Komoro vary considerably across the year, with a 31°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 -3°C and the daily average is 0°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 51mm Snow: 33mm Feb Precipitation: 56mm Snow: 28mm Mar Precipitation: 106mm Snow: 48mm Apr Precipitation: 111mm Snow: 10mm May Precipitation: 147mm Snow: 1mm Jun Precipitation: 210mm Snow: 0mm Jul Precipitation: 238mm Snow: 0mm Aug Precipitation: 199mm Snow: 0mm Sep Precipitation: 188mm Snow: 0mm Oct Precipitation: 178mm Snow: 0mm Nov Precipitation: 59mm Snow: 3mm Dec Precipitation: 47mm Snow: 14mm
Precipitation
Snow

Komoro is a fairly wet location, receiving approximately 1590mm of precipitation annually, which averages out to around 133mm per month. The wettest month is July, averaging 238mm of rainfall. June and August also tend to see above-average precipitation. The driest month is December, with just 47mm. That's 191mm less than July, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 135cm accumulating over the season. March typically sees the most snow at around 48cm.

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: 8km/h Mar Wind Speed: 7km/h Apr Wind Speed: 7km/h May Wind Speed: 6km/h Jun Wind Speed: 5km/h Jul Wind Speed: 4km/h Aug Wind Speed: 5km/h Sep Wind Speed: 5km/h Oct Wind Speed: 5km/h Nov Wind Speed: 6km/h Dec Wind Speed: 7km/h
Wind Speed

Komoro is relatively calm, with an average annual wind speed of 6km/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 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/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 7km/h in winter, 6km/h in spring, 5km/h in summer, 5km/h in autumn.

Seasons

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

3 days until Autumn

It is currently summer in Komoro, which began on June 21, 2026. Komoro 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 -3°C. Autumn is next, beginning on September 23, 2026 (3 days from now).

Spring

Temperatures range from 0 to 20°C. Rainfall is heavy, totalling around 364mm across the season with a monthly average of 121mm. Winds are generally light, averaging 6km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 15 to 28°C. Rainfall is heavy, totalling around 647mm across the season with a monthly average of 216mm. Winds are generally light, averaging 5km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from 3 to 24°C. Rainfall is heavy, totalling around 425mm across the season with a monthly average of 142mm. Winds are generally light, averaging 5km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from -3 to 6°C. Precipitation is moderate at around 154mm for the season, averaging 51mm per month. Expect around 74cm 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 Komoro 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
-3 °C
4 °C
7 km/h
51 mm
33 cm
Feb
-3 °C
5 °C
8 km/h
56 mm
28 cm
Mar
0 °C
10 °C
7 km/h
106 mm
48 cm
Apr
5 °C
16 °C
7 km/h
111 mm
10 cm
May
10 °C
20 °C
6 km/h
147 mm
1 cm
Jun
15 °C
23 °C
5 km/h
210 mm
0 cm
Jul
19 °C
27 °C
4 km/h
238 mm
0 cm
Aug
20 °C
28 °C
5 km/h
199 mm
0 cm
Sep Current
16 °C
24 °C
5 km/h
188 mm
0 cm
Oct
9 °C
17 °C
5 km/h
178 mm
0 cm
Nov
3 °C
12 °C
6 km/h
59 mm
3 cm
Dec
-1 °C
6 °C
7 km/h
47 mm
14 cm
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Metric (°C, km/h)