Climate Insights for Kawatana

Higashisonigi-gun, Nagasaki Prefecture, Japan

Hottest
August
30°C peak
Coldest
January
6°C low
Wettest
June
325mm rain
Best to Visit
November
Mild temps & low rain

Climate Overview

The climate in Kawatana is temperate. The average annual temperature is 18°C and approximately 2047mm of precipitation falls per year. Kawatana receives a notable amount of rainfall throughout the year, including during its driest month. Kawatana 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 6°C.

Temperature

10° 15° 20° 25° 30° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 10° Average: 8° Min: 6° Feb Max: 10° Average: 9° Min: 7° Mar Max: 14° Average: 12° Min: 10° Apr Max: 18° Average: 16° Min: 14° May Max: 21° Average: 19° Min: 18° Jun Max: 24° Average: 23° Min: 22° Jul Max: 28° Average: 27° Min: 26° Aug Max: 30° Average: 28° Min: 27° Sep Max: 27° Average: 26° Min: 24° Oct Max: 23° Average: 21° Min: 19° Nov Max: 18° Average: 16° Min: 14° Dec Max: 12° Average: 10° Min: 8°
Max
Average
Min

Temperatures in Kawatana vary considerably across the year, with a 24°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 6°C and an average of 8°C. Daily temperature variation is modest, with an average difference of 3°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 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 74mm Snow: 2mm Feb Precipitation: 101mm Snow: 1mm Mar Precipitation: 136mm Snow: 0mm Apr Precipitation: 156mm Snow: 0mm May Precipitation: 217mm Snow: 0mm Jun Precipitation: 325mm Snow: 0mm Jul Precipitation: 315mm Snow: 0mm Aug Precipitation: 255mm Snow: 0mm Sep Precipitation: 205mm Snow: 0mm Oct Precipitation: 101mm Snow: 0mm Nov Precipitation: 89mm Snow: 0mm Dec Precipitation: 72mm Snow: 0mm
Precipitation
Snow

Kawatana is a very wet location, receiving approximately 2047mm of precipitation annually, which averages out to around 171mm per month. The wettest month is June, averaging 325mm of rainfall. July and August also tend to see above-average precipitation. The driest month is December, with just 72mm. That's 253mm less than June, 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 10km/h 15km/h 20km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 17km/h Feb Wind Speed: 17km/h Mar Wind Speed: 15km/h Apr Wind Speed: 14km/h May Wind Speed: 12km/h Jun Wind Speed: 12km/h Jul Wind Speed: 13km/h Aug Wind Speed: 13km/h Sep Wind Speed: 13km/h Oct Wind Speed: 15km/h Nov Wind Speed: 14km/h Dec Wind Speed: 17km/h
Wind Speed

Kawatana 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 17km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/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 17km/h in winter, 14km/h in spring, 12km/h in summer, 14km/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 Kawatana, which began on June 21, 2026. Kawatana 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 6°C. Autumn is next, beginning on September 23, 2026 (3 days from now).

Spring

Temperatures range from 10 to 21°C. Rainfall is heavy, totalling around 509mm across the season with a monthly average of 170mm. Winds are generally light, averaging 14km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 22 to 30°C. Rainfall is heavy, totalling around 895mm across the season with a monthly average of 298mm. Winds are generally light, averaging 12km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from 14 to 27°C. Rainfall is heavy, totalling around 395mm across the season with a monthly average of 132mm. Winds are generally light, averaging 14km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 6 to 12°C. Precipitation is moderate at around 247mm for the season, averaging 82mm per month. Winds are moderate at around 17km/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 16°
May 19°
Jun 23°
Jul 27°
Aug 28°
Sep 26°
Oct 21°
Nov 16°
Dec 10°

The best time to visit Kawatana is during November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 89mm per month. By contrast, August can be uncomfortably hot with highs reaching 30°C, while January is the coldest period with lows dropping to 6°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 Kawatana 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
6 °C
10 °C
17 km/h
74 mm
2 cm
Feb
7 °C
10 °C
17 km/h
101 mm
1 cm
Mar
10 °C
14 °C
15 km/h
136 mm
0 cm
Apr
14 °C
18 °C
14 km/h
156 mm
0 cm
May
18 °C
21 °C
12 km/h
217 mm
0 cm
Jun
22 °C
24 °C
12 km/h
325 mm
0 cm
Jul
26 °C
28 °C
13 km/h
315 mm
0 cm
Aug
27 °C
30 °C
13 km/h
255 mm
0 cm
Sep Current
24 °C
27 °C
13 km/h
205 mm
0 cm
Oct
19 °C
23 °C
15 km/h
101 mm
0 cm
Nov
14 °C
18 °C
14 km/h
89 mm
0 cm
Dec
8 °C
12 °C
17 km/h
72 mm
0 cm
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Metric (°C, km/h)