Climate and monthly weather forecastSanmu, Japan
Climate and monthly weather forecast
Weather in January
January, the same as December, in Sanmu, Japan, is a frosty winter month, with an average temperature varying between 9.5°C (49.1°F) and 5°C (41°F). Sanmu's coldest temperatures are experienced in January, with average high temperatures of 9.5°C (49.1°F) and lows of 5°C (41°F). Weather in January »Weather in February
February, the last month of the winter in Sanmu, is a cool month, with an average temperature ranging between max 10.2°C (50.4°F) and min 5.3°C (41.5°F). The transition from January to February sees average high-temperatures adjusting to a fresh 10.2°C (50.4°F), from a not significantly different 9.5°C (49.1°F). Weather in February »Weather in March
The first month of the spring, March, is a moderate month in Sanmu, Japan, with an average temperature fluctuating between 7.8°C (46°F) and 13°C (55.4°F). March experiences an average high-temperature of a mild 13°C (55.4°F), barely different from February's 10.2°C (50.4°F). Weather in March »Weather in April
April is a refreshing spring month in Sanmu, Japan, with an average temperature fluctuating between 16.9°C (62.4°F) and 11.9°C (53.4°F). The embrace of April brings a minor uplift in the average high-temperature, shifting from a mild 13°C (55.4°F) in March to an enjoyable 16.9°C (62.4°F). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Sanmu, Japan, with an average temperature fluctuating between 16.7°C (62.1°F) and 21.3°C (70.3°F). Sanmu observes a slight ascent in average high-temperatures during May, adjusting from a refreshing 16.9°C (62.4°F) in April to a pleasant 21.3°C (70.3°F). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Sanmu, Japan, with temperature in the range of an average high of 23.8°C (74.8°F) and an average low of 19.7°C (67.5°F). The onset of June marks an average high-temperature of a warm 23.8°C (74.8°F), hardly differing from May's 21.3°C (70.3°F). Weather in June »Weather in July
July, like June, in Sanmu, Japan, is a moderately hot summer month, with temperature in the range of an average high of 27.4°C (81.3°F) and an average low of 23.2°C (73.8°F). July's arrival brings a modest temperature shift, moving from 23.8°C (74.8°F) in June to a still warm 27.4°C (81.3°F). Weather in July »Weather in August
August, the last month of the summer in Sanmu, is also a moderately hot month, with an average temperature varying between 29.6°C (85.3°F) and 25°C (77°F). Sanmu's temperatures peak on average in August, reaching 29.6°C (85.3°F) at their highest and 25°C (77°F) at their lowest. Throughout August, the heat index is calculated to be a fiery hot 36°C (96.8°F). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Sanmu, Japan, with an average temperature varying between 26.1°C (79°F) and 22°C (71.6°F). A mild shift in the average high-temperature occurs in September, reducing from 29.6°C (85.3°F) in August to a still moderately hot 26.1°C (79°F). Weather in September »Weather in October
October, like September, is another pleasant autumn month in Sanmu, Japan, with an average temperature fluctuating between 21.7°C (71.1°F) and 17.8°C (64°F). Sanmu records a mild change in average high-temperature during October, easing from a warm 26.1°C (79°F) in September to an agreeable 21.7°C (71.1°F). Weather in October »Weather in November
November, the last month of the autumn in Sanmu, is another refreshing month, with an average temperature fluctuating between 17°C (62.6°F) and 12.8°C (55°F). As October shifts into November, a minor alteration in temperatures is observed, with average highs reducing from a pleasant 21.7°C (71.1°F) to an enjoyable 17°C (62.6°F). Weather in November »Weather in December
December, the first month of the winter in Sanmu, is still a cool month, with an average temperature ranging between min 7.9°C (46.2°F) and max 12.3°C (54.1°F). The arrival of December is marked by a minor reduction in average high-temperature, sliding from an enjoyable 17°C (62.6°F) in November to a cool 12.3°C (54.1°F). Weather in December »Updated: Jul 15, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
With its average high temperature of 9.5°C (49.1°F) and a low of 5°C (41°F), January is regarded as the coldest month.
January is the least humid month, with an average relative humidity of 61%.
The month with the least rainfall is January, when the rain falls for 8.3 days and typically collects 48mm (1.89") of precipitation.
Throughout the year, there are 173.1 rainfall days, and 1019mm (40.12") of precipitation is accumulated.
January and February are months with snowfall.
Throughout the year, there are 1.9 snowfall days, and 14mm (0.55") of snow is accumulated.
The months with the lowest UV index are January through March and December, with an average maximum UV index of 3.
The month with the most snowfall is February, when snow falls for 1.2 days and typically aggregates up to 12mm (0.47") of snow.
The month with the least sunshine is February, with an average of 5.2h of sunshine.
In Sanmu, snow does not fall in March through December.
The month with the longest days is June, with an average of 14h and 30min of daylight.
July is the most humid month, with an average relative humidity of 83%.
July is the month with the highest UV index, with an average maximum UV index of 7.
August, with average temperatures reaching a high of 29.6°C (85.3°F) and a low of 25°C (77°F), is the warmest month.
The month with the most sunshine is August, with an average of 10.3h of sunshine.
The month with the most rainfall is October, when the rain falls for 17.4 days and typically aggregates up to 132mm (5.2") of precipitation.
December has the shortest days of the year, with an average of 9h and 48min of daylight.
Sanmu does not utilize Daylight Saving Time (DST). JST timezone is used over the entire year.
Average temperature
Sanmu, Japan
The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (9.5°C).
The month with the highest average low temperature is August (25°C).
The coldest month (with the lowest average low temperature) is January (5°C).
Average pressure
Sanmu, Japan
- Average pressure in January:
1015.7mbar - Average pressure in February:
1016.7mbar - Average pressure in March:
1015.2mbar - Average pressure in April:
1014.2mbar - Average pressure in May:
1012mbar - Average pressure in June:
1009.2mbar
- Average pressure in July:
1009.7mbar - Average pressure in August:
1010mbar - Average pressure in September:
1013.3mbar - Average pressure in October:
1016.4mbar - Average pressure in November:
1017.8mbar - Average pressure in December:
1015.8mbar
The month with the highest atmospheric pressure is November (1017.8mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed
Sanmu, Japan
- Average wind speed in January:
18.1km/h - Average wind speed in February:
19.1km/h - Average wind speed in March:
19.4km/h - Average wind speed in April:
18.9km/h - Average wind speed in May:
16.4km/h - Average wind speed in June:
14.5km/h
- Average wind speed in July:
15.8km/h - Average wind speed in August:
15km/h - Average wind speed in September:
15.6km/h - Average wind speed in October:
17.3km/h - Average wind speed in November:
15.9km/h - Average wind speed in December:
17.3km/h
The windiest month (with the highest average wind speed) is March (19.4km/h).
The calmest month (with the lowest average wind speed) is June (14.5km/h).
Average humidity
Sanmu, Japan
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (61%).
Average rainfall
Sanmu, Japan
The wettest month (with the highest rainfall) is October (132mm).
The driest month (with the least rainfall) is January (48mm).
Average rainfall days
Sanmu, Japan
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
12.6 days - Average rainfall days in March:
16.3 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
12.6 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
16.6 days - Average rainfall days in August:
14.4 days - Average rainfall days in September:
16.2 days - Average rainfall days in October:
17.4 days - Average rainfall days in November:
14.3 days - Average rainfall days in December:
11.3 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (8.3 days).
Average snowfall
Sanmu, Japan
The month with the highest snowfall is February (12mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days
Sanmu, Japan
- Average snowfall days in January:
0.6 days - Average snowfall days in February:
1.2 days - Average snowfall days in March:
0.1 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).
Average daylight / Average sunshine
Sanmu, Japan
- Average daylight in January:
10h and 6min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 30min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
6h and 0min - Average sunshine in February:
5h and 12min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 24min - Average sunshine in May:
9h and 6min - Average sunshine in June:
8h and 12min
- Average sunshine in July:
9h and 6min - Average sunshine in August:
10h and 18min - Average sunshine in September:
7h and 36min - Average sunshine in October:
6h and 24min - Average sunshine in November:
5h and 24min - Average sunshine in December:
5h and 48min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days
Sanmu, Japan
- Average sunshine days in January:
21.3 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
12.6 days - Average sunshine days in April:
13.2 days - Average sunshine days in May:
16.3 days - Average sunshine days in June:
10 days
- Average sunshine days in July:
12.6 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
10.9 days - Average sunshine days in October:
11.5 days - Average sunshine days in November:
14.5 days - Average sunshine days in December:
18.2 days
The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is June (10 days).
Average UV index
Sanmu, Japan
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March and December (UV index 3).
Average cloud cover
Sanmu, Japan
The months with the most cloud cover are March, June and October (Cloud cover 47).
The months with the least cloud cover are January and August (Cloud cover 33).
Average visibility
Sanmu, Japan
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
