Climate Insights for Koseda

Kumage-gun, Kagoshima-ken, Japan

Hottest
August
29°C peak
Coldest
January
12°C low
Wettest
June
420mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Koseda is warm and mild. The average annual temperature is 21°C and approximately 2515mm of precipitation falls per year. Koseda receives a notable amount of rainfall throughout the year, including during its driest month. Koseda 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.

Temperature

0° 5° 10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 15° Average: 13° Min: 12° Feb Max: 15° Average: 14° Min: 12° Mar Max: 17° Average: 16° Min: 15° Apr Max: 20° Average: 19° Min: 18° May Max: 22° Average: 22° Min: 21° Jun Max: 25° Average: 25° Min: 24° Jul Max: 28° Average: 27° Min: 27° Aug Max: 29° Average: 28° Min: 27° Sep Max: 27° Average: 27° Min: 26° Oct Max: 25° Average: 24° Min: 23° Nov Max: 21° Average: 20° Min: 19° Dec Max: 16° Average: 15° Min: 14°
Max
Average
Min

Koseda sees moderate temperature variation throughout the year, ranging from 12°C to 29°C. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 12°C and an average of 13°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between November and December, with a 5°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm 300mm 350mm 400mm 450mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 133mm Feb Precipitation: 151mm Mar Precipitation: 195mm Apr Precipitation: 211mm May Precipitation: 272mm Jun Precipitation: 420mm Jul Precipitation: 217mm Aug Precipitation: 206mm Sep Precipitation: 236mm Oct Precipitation: 200mm Nov Precipitation: 155mm Dec Precipitation: 120mm
Precipitation

Koseda is a very wet location, receiving approximately 2515mm of precipitation annually, which averages out to around 210mm per month. The wettest month is June, averaging 420mm of rainfall. May and September also tend to see above-average precipitation. The driest month is December, with just 120mm. That's 300mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h 25km/h 30km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 30km/h Feb Wind Speed: 30km/h Mar Wind Speed: 27km/h Apr Wind Speed: 26km/h May Wind Speed: 24km/h Jun Wind Speed: 22km/h Jul Wind Speed: 23km/h Aug Wind Speed: 23km/h Sep Wind Speed: 24km/h Oct Wind Speed: 26km/h Nov Wind Speed: 25km/h Dec Wind Speed: 29km/h
Wind Speed

Koseda is moderately windy, with an average annual wind speed of 26km/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 30km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in June, with average winds dropping to 22km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 8km/h 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 29km/h in winter, 26km/h in spring, 23km/h in summer, 25km/h in autumn.

Seasons

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

87 days until Winter

It is currently autumn in Koseda, which began on September 23, 2026. Koseda 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 29°C, while the coldest stretch bottoms out in January near 12°C. Winter is next, beginning on December 21, 2026 (87 days from now).

Spring

Temperatures range from 15 to 22°C. Rainfall is heavy, totalling around 677mm across the season with a monthly average of 226mm. Winds are strong, averaging 26km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 24 to 29°C. Rainfall is heavy, totalling around 843mm across the season with a monthly average of 281mm. Winds are moderate at around 23km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from 19 to 27°C. Rainfall is heavy, totalling around 590mm across the season with a monthly average of 197mm. Winds are strong, averaging 25km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 12 to 16°C. Rainfall is heavy, totalling around 404mm across the season with a monthly average of 135mm. Winds are strong, averaging 29km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Monthly Climate Data

The table below shows monthly climate averages for Koseda 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
12 °C
15 °C
30 km/h
133 mm
0 cm
Feb
12 °C
15 °C
30 km/h
151 mm
0 cm
Mar
15 °C
17 °C
27 km/h
195 mm
0 cm
Apr
18 °C
20 °C
26 km/h
211 mm
0 cm
May
21 °C
22 °C
24 km/h
272 mm
0 cm
Jun
24 °C
25 °C
22 km/h
420 mm
0 cm
Jul
27 °C
28 °C
23 km/h
217 mm
0 cm
Aug
27 °C
29 °C
23 km/h
206 mm
0 cm
Sep Current
26 °C
27 °C
24 km/h
236 mm
0 cm
Oct
23 °C
25 °C
26 km/h
200 mm
0 cm
Nov
19 °C
21 °C
25 km/h
155 mm
0 cm
Dec
14 °C
16 °C
29 km/h
120 mm
0 cm
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Metric (°C, km/h)