Climate Insights for Tsunō

Kōyu-gun, Miyazaki, Japan

Hottest
August
31°C peak
Coldest
January
5°C low
Wettest
September
333mm rain
Best to Visit
November
Mild temps & low rain

Climate Overview

The climate in Tsunō is warm and mild. The average annual temperature is 18°C and approximately 2240mm of precipitation falls per year. Tsunō receives a notable amount of rainfall throughout the year, including during its driest month. Tsunō 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: 12° Average: 9° Min: 5° Feb Max: 13° Average: 9° Min: 6° Mar Max: 16° Average: 13° Min: 9° Apr Max: 20° Average: 16° Min: 13° May Max: 23° Average: 20° Min: 17° Jun Max: 26° Average: 24° Min: 21° Jul Max: 30° Average: 27° Min: 25° Aug Max: 31° Average: 28° Min: 26° Sep Max: 28° Average: 26° Min: 24° Oct Max: 24° Average: 21° Min: 18° Nov Max: 19° Average: 16° Min: 12° Dec Max: 14° Average: 10° Min: 7°
Max
Average
Min

Temperatures in Tsunō vary considerably across the year, with a 26°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 31°C and the mean temperature sits around 28°C. January is the coolest month, with minimum temperatures around 5°C and an average of 9°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 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 63mm Feb Precipitation: 104mm Mar Precipitation: 151mm Apr Precipitation: 149mm May Precipitation: 235mm Jun Precipitation: 314mm Jul Precipitation: 304mm Aug Precipitation: 265mm Sep Precipitation: 333mm Oct Precipitation: 189mm Nov Precipitation: 80mm Dec Precipitation: 51mm
Precipitation

Tsunō is a very wet location, receiving approximately 2240mm of precipitation annually, which averages out to around 187mm per month. The wettest month is September, averaging 333mm of rainfall. June and July also tend to see above-average precipitation. The driest month is December, with just 51mm. That's 282mm less than September, 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 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 8km/h Feb Wind Speed: 8km/h Mar Wind Speed: 8km/h Apr Wind Speed: 7km/h May Wind Speed: 7km/h Jun Wind Speed: 7km/h Jul Wind Speed: 7km/h Aug Wind Speed: 7km/h Sep Wind Speed: 8km/h Oct Wind Speed: 8km/h Nov Wind Speed: 7km/h Dec Wind Speed: 7km/h
Wind Speed

Tsunō 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 February, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

Seasons

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

3 days until Autumn

It is currently summer in Tsunō, which began on June 21, 2026. Tsunō 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 31°C, while the coldest stretch bottoms out in January near 5°C. Autumn is next, beginning on September 23, 2026 (3 days from now).

Spring

Temperatures range from 9 to 23°C. Rainfall is heavy, totalling around 536mm across the season with a monthly average of 179mm. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 21 to 31°C. Rainfall is heavy, totalling around 884mm across the season with a monthly average of 295mm. Winds are generally light, averaging 7km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from 12 to 28°C. Rainfall is heavy, totalling around 602mm across the season with a monthly average of 201mm. Winds are generally light, averaging 8km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 5 to 14°C. Precipitation is moderate at around 218mm for the season, averaging 73mm per month. Winds are generally light, averaging 8km/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 13°
Apr 16°
May 20°
Jun 24°
Jul 27°
Aug 28°
Sep 26°
Oct 21°
Nov 16°
Dec 10°

The best time to visit Tsunō is during November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 80mm per month. By contrast, August can be uncomfortably hot with highs reaching 31°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 Tsunō 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
12 °C
8 km/h
63 mm
0 cm
Feb
6 °C
13 °C
8 km/h
104 mm
0 cm
Mar
9 °C
16 °C
8 km/h
151 mm
0 cm
Apr
13 °C
20 °C
7 km/h
149 mm
0 cm
May
17 °C
23 °C
7 km/h
235 mm
0 cm
Jun
21 °C
26 °C
7 km/h
314 mm
0 cm
Jul
25 °C
30 °C
7 km/h
304 mm
0 cm
Aug
26 °C
31 °C
7 km/h
265 mm
0 cm
Sep Current
24 °C
28 °C
8 km/h
333 mm
0 cm
Oct
18 °C
24 °C
8 km/h
189 mm
0 cm
Nov
12 °C
19 °C
7 km/h
80 mm
0 cm
Dec
7 °C
14 °C
7 km/h
51 mm
0 cm
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Metric (°C, km/h)