Climate Insights for Amagi

Ōshima-gun, Kagoshima-ken, Japan

Hottest
August
29°C peak
Coldest
February
16°C low
Wettest
June
437mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Amagi is warm and mild. The average annual temperature is 23°C and approximately 2113mm of precipitation falls per year. Amagi receives a notable amount of rainfall throughout the year, including during its driest month. Amagi 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 February, January, March, when temperatures can drop to 16°C.

Temperature

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

Amagi sees moderate temperature variation throughout the year, ranging from 16°C to 29°C. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 29°C. February is the coolest month, with minimum temperatures around 16°C and an average of 17°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 3°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: 129mm Feb Precipitation: 116mm Mar Precipitation: 171mm Apr Precipitation: 139mm May Precipitation: 191mm Jun Precipitation: 437mm Jul Precipitation: 177mm Aug Precipitation: 140mm Sep Precipitation: 222mm Oct Precipitation: 134mm Nov Precipitation: 129mm Dec Precipitation: 128mm
Precipitation

Amagi is a very wet location, receiving approximately 2113mm of precipitation annually, which averages out to around 176mm per month. The wettest month is June, averaging 437mm of rainfall. September and May also tend to see above-average precipitation. The driest month is February, with just 116mm. That's 320mm 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 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: 6km/h May Wind Speed: 6km/h Jun Wind Speed: 6km/h Jul Wind Speed: 6km/h Aug Wind Speed: 7km/h Sep Wind Speed: 7km/h Oct Wind Speed: 7km/h Nov Wind Speed: 7km/h Dec Wind Speed: 8km/h
Wind Speed

Amagi is relatively calm, with an average annual wind speed of 7km/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 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

Seasons

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

93 days until Autumn

It is currently summer in Amagi, which began on June 21, 2026. Amagi 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 February near 16°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.

Spring

Temperatures range from 17 to 24°C. Rainfall is heavy, totalling around 501mm across the season with a monthly average of 167mm. Winds are generally light, averaging 6km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 25 to 29°C. Rainfall is heavy, totalling around 754mm across the season with a monthly average of 251mm. Winds are generally light, averaging 6km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 21 to 28°C. Rainfall is heavy, totalling around 485mm across the season with a monthly average of 162mm. Winds are generally light, averaging 7km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 16 to 20°C. Rainfall is heavy, totalling around 373mm across the season with a monthly average of 124mm. Winds are generally light, averaging 8km/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 Amagi 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
16 °C
18 °C
7 km/h
129 mm
0 cm
Feb
16 °C
18 °C
8 km/h
116 mm
0 cm
Mar
17 °C
19 °C
7 km/h
171 mm
0 cm
Apr
20 °C
21 °C
6 km/h
139 mm
0 cm
May
23 °C
24 °C
6 km/h
191 mm
0 cm
Jun Current
25 °C
26 °C
6 km/h
437 mm
0 cm
Jul
27 °C
28 °C
6 km/h
177 mm
0 cm
Aug
28 °C
29 °C
7 km/h
140 mm
0 cm
Sep
27 °C
28 °C
7 km/h
222 mm
0 cm
Oct
25 °C
26 °C
7 km/h
134 mm
0 cm
Nov
21 °C
23 °C
7 km/h
129 mm
0 cm
Dec
18 °C
20 °C
8 km/h
128 mm
0 cm
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