Climate Insights for Sukumo

Sukumo Shi, Kochi Prefecture, Japan

Hottest
August
30°C peak
Coldest
January
7°C low
Wettest
July
375mm rain
Best to Visit
November
Mild temps & low rain

Climate Overview

The climate in Sukumo is warm and mild. The average annual temperature is 18°C and approximately 2367mm of precipitation falls per year. Sukumo receives a notable amount of rainfall throughout the year, including during its driest month. Sukumo 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 7°C.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 12° Average: 9° Min: 7° Feb Max: 12° Average: 10° Min: 7° Mar Max: 15° Average: 13° Min: 10° Apr Max: 19° Average: 17° Min: 14° May Max: 22° Average: 20° Min: 18° Jun Max: 25° Average: 23° Min: 21° Jul Max: 28° Average: 26° Min: 25° Aug Max: 30° Average: 28° Min: 26° Sep Max: 27° Average: 25° Min: 24° Oct Max: 23° Average: 21° Min: 19° Nov Max: 19° Average: 16° Min: 14° Dec Max: 14° Average: 11° Min: 9°
Max
Average
Min

Temperatures in Sukumo vary considerably across the year, with a 23°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. January is the coolest month, with minimum temperatures around 7°C and an average of 9°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between October and November, with a 5°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 89mm Snow: 2mm Feb Precipitation: 114mm Snow: 0mm Mar Precipitation: 170mm Snow: 0mm Apr Precipitation: 172mm Snow: 0mm May Precipitation: 210mm Snow: 0mm Jun Precipitation: 326mm Snow: 0mm Jul Precipitation: 375mm Snow: 0mm Aug Precipitation: 133mm Snow: 0mm Sep Precipitation: 326mm Snow: 0mm Oct Precipitation: 265mm Snow: 0mm Nov Precipitation: 96mm Snow: 0mm Dec Precipitation: 91mm Snow: 0mm
Precipitation
Snow

Sukumo is a very wet location, receiving approximately 2367mm of precipitation annually, which averages out to around 197mm per month. The wettest month is July, averaging 375mm of rainfall. June and September also tend to see above-average precipitation. The driest month is January, with just 89mm. That's 286mm 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.

Wind

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

Sukumo is relatively calm, with an average annual wind speed of 4km/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 5km/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 1km/h gap 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 Sukumo, which began on June 21, 2026. Sukumo 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 January near 7°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

Spring

Temperatures range from 10 to 22°C. Rainfall is heavy, totalling around 552mm across the season with a monthly average of 184mm. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 21 to 30°C. Rainfall is heavy, totalling around 834mm across the season with a monthly average of 278mm. Winds are generally light, averaging 4km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 14 to 27°C. Rainfall is heavy, totalling around 687mm across the season with a monthly average of 229mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 7 to 14°C. Precipitation is moderate at around 294mm for the season, averaging 98mm per month. Winds are generally light, averaging 5km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan
Feb 10°
Mar 13°
Apr 17°
May 20°
Jun 23°
Jul 26°
Aug 28°
Sep 25°
Oct 21°
Nov 16°
Dec 11°

The best time to visit Sukumo is during November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 96mm per month. By contrast, August can be uncomfortably hot with highs reaching 30°C, while January is the coldest period with lows dropping to 7°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 Sukumo 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. 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
7 °C
12 °C
5 km/h
89 mm
2 cm
Feb
7 °C
12 °C
5 km/h
114 mm
0 cm
Mar
10 °C
15 °C
5 km/h
170 mm
0 cm
Apr
14 °C
19 °C
5 km/h
172 mm
0 cm
May
18 °C
22 °C
4 km/h
210 mm
0 cm
Jun Current
21 °C
25 °C
4 km/h
326 mm
0 cm
Jul
25 °C
28 °C
4 km/h
375 mm
0 cm
Aug
26 °C
30 °C
4 km/h
133 mm
0 cm
Sep
24 °C
27 °C
4 km/h
326 mm
0 cm
Oct
19 °C
23 °C
4 km/h
265 mm
0 cm
Nov
14 °C
19 °C
4 km/h
96 mm
0 cm
Dec
9 °C
14 °C
5 km/h
91 mm
0 cm
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