Climate Insights for Sayō

Sayō-gun, Hyōgo, Japan

Hottest
August
32°C peak
Coldest
January
0°C low
Wettest
July
245mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Sayō is temperate. The average annual temperature is 15°C and approximately 1606mm of precipitation falls per year. Sayō receives a notable amount of rainfall throughout the year, including during its driest month. Sayō 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 0°C. Light snow can occur between January and December.

Temperature

10° 20° 30° 40° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 8° Average: 4° Min: 0° Feb Max: 9° Average: 5° Min: 1° Mar Max: 14° Average: 9° Min: 4° Apr Max: 19° Average: 14° Min: 9° May Max: 23° Average: 18° Min: 14° Jun Max: 26° Average: 22° Min: 18° Jul Max: 30° Average: 26° Min: 23° Aug Max: 32° Average: 28° Min: 24° Sep Max: 28° Average: 24° Min: 21° Oct Max: 22° Average: 17° Min: 14° Nov Max: 16° Average: 11° Min: 7° Dec Max: 10° Average: 6° Min: 2°
Max
Average
Min

Temperatures in Sayō vary considerably across the year, with a 32°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 28°C. January is the coolest month, with minimum temperatures around 0°C and an average of 4°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between September and October, with a 6°C shift in average temperatures.

Precipitation

0mm 50mm 100mm 150mm 200mm 250mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 45mm Snow: 5mm Feb Precipitation: 58mm Snow: 4mm Mar Precipitation: 107mm Snow: 1mm Apr Precipitation: 149mm Snow: 0mm May Precipitation: 147mm Snow: 0mm Jun Precipitation: 218mm Snow: 0mm Jul Precipitation: 245mm Snow: 0mm Aug Precipitation: 205mm Snow: 0mm Sep Precipitation: 197mm Snow: 0mm Oct Precipitation: 133mm Snow: 0mm Nov Precipitation: 59mm Snow: 0mm Dec Precipitation: 44mm Snow: 2mm
Precipitation
Snow

Sayō is a fairly wet location, receiving approximately 1606mm of precipitation annually, which averages out to around 134mm per month. The wettest month is July, averaging 245mm of rainfall. June and August also tend to see above-average precipitation. The driest month is December, with just 44mm. That's 200mm less than July, 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. Light snowfall can occur between January and December, totalling around 12cm annually. January is the snowiest month with approximately 5cm.

Wind

0km/h 5km/h 10km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 9km/h Feb Wind Speed: 9km/h Mar Wind Speed: 9km/h Apr Wind Speed: 9km/h May Wind Speed: 8km/h Jun Wind Speed: 7km/h Jul Wind Speed: 7km/h Aug Wind Speed: 8km/h Sep Wind Speed: 8km/h Oct Wind Speed: 8km/h Nov Wind Speed: 8km/h Dec Wind Speed: 8km/h
Wind Speed

Sayō is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, 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 2km/h between the calmest and windiest months.

Seasons

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

7 days until Autumn

It is currently summer in Sayō, which began on June 21, 2026. Sayō 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 0°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

Spring

Temperatures range from 4 to 23°C. Rainfall is heavy, totalling around 403mm across the season with a monthly average of 134mm. Winds are generally light, averaging 9km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 18 to 32°C. Rainfall is heavy, totalling around 667mm across the season with a monthly average of 222mm. Winds are generally light, averaging 7km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.

Autumn

Temperatures range from 7 to 28°C. Rainfall is heavy, totalling around 389mm across the season with a monthly average of 130mm. Winds are generally light, averaging 8km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from 0 to 10°C. Rainfall is relatively light, with around 147mm over the season and a monthly average of 49mm. Expect around 11cm of snow accumulation during this period. Winds are generally light, averaging 9km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.

Monthly Climate Data

The table below shows monthly climate averages for Sayō 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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
0 °C
8 °C
9 km/h
45 mm
5 cm
Feb
1 °C
9 °C
9 km/h
58 mm
4 cm
Mar
4 °C
14 °C
9 km/h
107 mm
1 cm
Apr
9 °C
19 °C
9 km/h
149 mm
0 cm
May
14 °C
23 °C
8 km/h
147 mm
0 cm
Jun
18 °C
26 °C
7 km/h
218 mm
0 cm
Jul
23 °C
30 °C
7 km/h
245 mm
0 cm
Aug
24 °C
32 °C
8 km/h
205 mm
0 cm
Sep Current
21 °C
28 °C
8 km/h
197 mm
0 cm
Oct
14 °C
22 °C
8 km/h
133 mm
0 cm
Nov
7 °C
16 °C
8 km/h
59 mm
0 cm
Dec
2 °C
10 °C
8 km/h
44 mm
2 cm
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Metric (°C, km/h)