Climate Insights for Arao

Arao Shi, Kumamoto, Japan

Hottest
August
32°C peak
Coldest
January
5°C low
Wettest
June
373mm rain
Best to Visit
October
Mild temps & low rain

Climate Overview

The climate in Arao is temperate. The average annual temperature is 18°C and approximately 2034mm of precipitation falls per year. Arao receives a notable amount of rainfall throughout the year, including during its driest month. Arao 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 5°C.

Temperature

10° 20° 30° 40° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 11° Average: 8° Min: 5° Feb Max: 12° Average: 8° Min: 5° Mar Max: 16° Average: 12° Min: 8° Apr Max: 20° Average: 17° Min: 13° May Max: 24° Average: 20° Min: 17° Jun Max: 26° Average: 24° Min: 21° Jul Max: 30° Average: 27° Min: 25° Aug Max: 32° Average: 29° Min: 26° Sep Max: 29° Average: 25° Min: 23° Oct Max: 24° Average: 20° Min: 17° Nov Max: 19° Average: 15° Min: 11° Dec Max: 12° Average: 9° Min: 6°
Max
Average
Min

Temperatures in Arao vary considerably across the year, with a 27°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 32°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 5°C and an average of 8°C. Daily temperature variation is modest, with an average difference of 6°C between highs and lows. The sharpest temperature change occurs between November and December, with a 6°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: 70mm Snow: 1mm Feb Precipitation: 91mm Snow: 0mm Mar Precipitation: 128mm Snow: 0mm Apr Precipitation: 145mm Snow: 0mm May Precipitation: 200mm Snow: 0mm Jun Precipitation: 373mm Snow: 0mm Jul Precipitation: 366mm Snow: 0mm Aug Precipitation: 233mm Snow: 0mm Sep Precipitation: 174mm Snow: 0mm Oct Precipitation: 94mm Snow: 0mm Nov Precipitation: 93mm Snow: 0mm Dec Precipitation: 67mm Snow: 0mm
Precipitation
Snow

Arao is a very wet location, receiving approximately 2034mm of precipitation annually, which averages out to around 170mm per month. The wettest month is June, averaging 373mm of rainfall. July and August also tend to see above-average precipitation. The driest month is December, with just 67mm. That's 306mm less than June, 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.

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: 16km/h Feb Wind Speed: 16km/h Mar Wind Speed: 15km/h Apr Wind Speed: 15km/h May Wind Speed: 13km/h Jun Wind Speed: 14km/h Jul Wind Speed: 14km/h Aug Wind Speed: 13km/h Sep Wind Speed: 14km/h Oct Wind Speed: 14km/h Nov Wind Speed: 13km/h Dec Wind Speed: 15km/h
Wind Speed

Arao is mildly breezy, with an average annual wind speed of 14km/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 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 13km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 3km/h between the calmest and windiest months.

Seasons

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

89 days until Summer

It is currently spring in Arao, which began on March 20, 2026. Arao 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 32°C, while the coldest stretch bottoms out in January near 5°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

Spring

Temperatures range from 8 to 24°C. Rainfall is heavy, totalling around 473mm across the season with a monthly average of 158mm. Winds are generally light, averaging 15km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 21 to 32°C. Rainfall is heavy, totalling around 972mm across the season with a monthly average of 324mm. Winds are generally light, averaging 14km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 11 to 29°C. Rainfall is heavy, totalling around 361mm across the season with a monthly average of 120mm. Winds are generally light, averaging 14km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 5 to 12°C. Precipitation is moderate at around 229mm for the season, averaging 76mm per month. Winds are moderate at around 16km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.

Best Time to Visit

Jan
Feb
Mar 12°
Apr 17°
May 20°
Jun 24°
Jul 27°
Aug 29°
Sep 25°
Oct 20°
Nov 15°
Dec

The best time to visit Arao is during October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 94mm per month. By contrast, August can be uncomfortably hot with highs reaching 32°C, while January is the coldest period with lows dropping to 5°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 Arao 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
5 °C
11 °C
16 km/h
70 mm
1 cm
Feb
5 °C
12 °C
16 km/h
91 mm
0 cm
Mar Current
8 °C
16 °C
15 km/h
128 mm
0 cm
Apr
13 °C
20 °C
15 km/h
145 mm
0 cm
May
17 °C
24 °C
13 km/h
200 mm
0 cm
Jun
21 °C
26 °C
14 km/h
373 mm
0 cm
Jul
25 °C
30 °C
14 km/h
366 mm
0 cm
Aug
26 °C
32 °C
13 km/h
233 mm
0 cm
Sep
23 °C
29 °C
14 km/h
174 mm
0 cm
Oct
17 °C
24 °C
14 km/h
94 mm
0 cm
Nov
11 °C
19 °C
13 km/h
93 mm
0 cm
Dec
6 °C
12 °C
15 km/h
67 mm
0 cm
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Metric (°C, km/h)