Climate and monthly weather forecastShinjuku, Japan
Climate and monthly weather forecast
Weather in January
January, like December, is a frosty winter month in Shinjuku, Japan, with an average temperature fluctuating between 5.3°C (41.5°F) and 9.8°C (49.6°F). Shinjuku's coldest month, January, generally records average temperatures ranging from a high of 9.8°C (49.6°F) to a low of 5.3°C (41.5°F). Weather in January »Weather in February
February, the last month of the winter in Shinjuku, is a cool month, with an average temperature fluctuating between 5.8°C (42.4°F) and 10.4°C (50.7°F). February records an average high-temperature of a cool 10.4°C (50.7°F), indicating a minor variation from the preceding month. Weather in February »Weather in March
March, the first month of the spring in Shinjuku, is a mild month, with an average temperature fluctuating between 8.1°C (46.6°F) and 13.3°C (55.9°F). Shinjuku marks the arrival of March with an average high-temperature of a moderate 13.3°C (55.9°F), hardly different from February's 10.4°C (50.7°F). Weather in March »Weather in April
April is a refreshing spring month in Shinjuku, Japan, with an average temperature varying between 17°C (62.6°F) and 12.1°C (53.8°F). Shinjuku, Japan, experiences a minor temperature shift with the start of April, with average high-temperatures moving from a moderate 13.3°C (55.9°F) in March to an enjoyable 17°C (62.6°F). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Shinjuku, Japan, with temperature in the range of an average low of 17°C (62.6°F) and an average high of 21.2°C (70.2°F). Shinjuku, Japan, in May experiences a slight uptick in the average high-temperature, adjusting from April's refreshing 17°C (62.6°F) to a pleasant 21.2°C (70.2°F). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Shinjuku, Japan, with an average temperature fluctuating between 19.8°C (67.6°F) and 23.4°C (74.1°F). Shinjuku starts June with an average high-temperature of a moderately hot 23.4°C (74.1°F), hinting at a minimal fluctuation from May. Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Shinjuku, Japan, with an average temperature ranging between min 23.4°C (74.1°F) and max 27.2°C (81°F). The start of July signals a slight increase in the average high-temperature, moving from 23.4°C (74.1°F) in June to a still moderately hot 27.2°C (81°F). Weather in July »Weather in August
August, the last month of the summer in Shinjuku, is another warm month, with an average temperature varying between 28.8°C (83.8°F) and 25.3°C (77.5°F). In Shinjuku, the highest average temperatures are observed in August, with a high of 28.8°C (83.8°F) and a low of 25.3°C (77.5°F). August's heat index is estimated at a tropical 34°C (93.2°F). Weather in August »Weather in September
September, the first month of the autumn in Shinjuku, is also a moderately hot month, with temperature in the range of an average low of 22.3°C (72.1°F) and an average high of 26°C (78.8°F). With the arrival of September, Shinjuku's average high-temperature registers at a still moderately hot 26°C (78.8°F), indicating a subtle variation from the previous month. Weather in September »Weather in October
October, like September, is an agreeable autumn month in Shinjuku, Japan, with an average temperature ranging between max 21.7°C (71.1°F) and min 17.9°C (64.2°F). The start of October signals a gentle decrease in the average high-temperature, transitioning from a warm 26°C (78.8°F) in September to a pleasant 21.7°C (71.1°F). Weather in October »Weather in November
The last month of the autumn, November, is another comfortable month in Shinjuku, Japan, with an average temperature ranging between max 17.1°C (62.8°F) and min 13.2°C (55.8°F). The commencement of November indicates a gentle shift in the average high-temperature, receding from October's pleasant 21.7°C (71.1°F) to an enjoyable 17.1°C (62.8°F). Weather in November »Weather in December
December, the first month of the winter in Shinjuku, is still a cool month, with an average temperature ranging between min 8.4°C (47.1°F) and max 12.5°C (54.5°F). In Shinjuku, the beginning of December is marked by a marginally lowered average high-temperature, shifting from November's refreshing 17.1°C (62.8°F) to a fresh 12.5°C (54.5°F). Weather in December »Updated: Jun 18, 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
January, marked by an average high-temperature of 9.8°C (49.6°F) and a low-temperature of 5.3°C (41.5°F), is the coldest month.
January is the least humid month in Shinjuku, with an average relative humidity of 61%.
Throughout the year, there are 150.9 rainfall days, and 867mm (34.13") of precipitation is accumulated.
January through March are months with snowfall.
Throughout the year, there are 0.7 snowfall days, and 17mm (0.67") of snow is accumulated.
The months with the lowest UV index are January, February and December, with an average maximum UV index of 3.
The months with the least rainfall are February and December Rain falls for 10 days and accumulates 39mm (1.54") of rain.
The month with the most snowfall is February, when snow falls for 0.5 days and typically aggregates up to 10mm (0.39") of snow.
February has the least sunshine of the year, with an average of 5.5h of sunshine.
In Shinjuku, Japan, snow does not fall in April through December.
The month with the longest days is June, with an average of 14h and 30min of daylight.
The most humid month is July, with an average relative humidity of 83%.
The month with the highest UV index in Shinjuku is July, with an average maximum UV index of 7.
The warmest period is August, when temperatures fluctuate between an average high of 28.8°C (83.8°F) and a low of 25.3°C (77.5°F).
The month with the most sunshine is August, with an average of 10.7h of sunshine.
October is the month with the most rainfall. Rain falls for 15.5 days and accumulates 119mm (4.69") of precipitation.
The month with the shortest days is December, with an average of 9h and 48min of daylight.
Shinjuku does not utilize Daylight Saving Time (DST). JST timezone is used throughout the entire year.
Average temperature
Shinjuku, Japan
The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (9.8°C).
The month with the highest average low temperature is August (25.3°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).
Average pressure
Shinjuku, Japan
- Average pressure in January:
1016.1mbar - Average pressure in February:
1016.9mbar - Average pressure in March:
1015.3mbar - Average pressure in April:
1014.2mbar - Average pressure in May:
1012mbar - Average pressure in June:
1009.1mbar
- Average pressure in July:
1009.8mbar - Average pressure in August:
1010.1mbar - Average pressure in September:
1013.2mbar - Average pressure in October:
1016.3mbar - Average pressure in November:
1017.9mbar - Average pressure in December:
1016.2mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed
Shinjuku, Japan
- Average wind speed in January:
19km/h - Average wind speed in February:
20km/h - Average wind speed in March:
20.8km/h - Average wind speed in April:
20.1km/h - Average wind speed in May:
17.7km/h - Average wind speed in June:
15.9km/h
- Average wind speed in July:
17.5km/h - Average wind speed in August:
16.7km/h - Average wind speed in September:
16.8km/h - Average wind speed in October:
18.9km/h - Average wind speed in November:
17.7km/h - Average wind speed in December:
19.1km/h
The windiest month (with the highest average wind speed) is March (20.8km/h).
The calmest month (with the lowest average wind speed) is June (15.9km/h).
Average humidity
Shinjuku, Japan
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (61%).
Average rainfall
Shinjuku, Japan
The wettest month (with the highest rainfall) is October (119mm).
The driest months (with the least rainfall) are February and December (39mm).
Average rainfall days
Shinjuku, Japan
- Average rainfall days in January:
6.5 days - Average rainfall days in February:
10 days - Average rainfall days in March:
13.9 days - Average rainfall days in April:
13.6 days - Average rainfall days in May:
11.6 days - Average rainfall days in June:
16.5 days
- Average rainfall days in July:
14 days - Average rainfall days in August:
13.1 days - Average rainfall days in September:
15.2 days - Average rainfall days in October:
15.5 days - Average rainfall days in November:
12.3 days - Average rainfall days in December:
8.7 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (6.5 days).
Average snowfall
Shinjuku, Japan
The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days
Shinjuku, Japan
- Average snowfall days in January:
0.1 days - Average snowfall days in February:
0.5 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 (0.5 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
Shinjuku, 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 24min - Average sunshine in February:
5h and 30min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 54min - Average sunshine in May:
9h and 30min - Average sunshine in June:
8h and 48min
- Average sunshine in July:
9h and 48min - Average sunshine in August:
10h and 42min - Average sunshine in September:
8h and 12min - Average sunshine in October:
6h and 48min - Average sunshine in November:
5h and 54min - Average sunshine in December:
6h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days
Shinjuku, Japan
- Average sunshine days in January:
23.2 days - Average sunshine days in February:
16.1 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
17.3 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
15.7 days - Average sunshine days in August:
15 days - Average sunshine days in September:
11.6 days - Average sunshine days in October:
12.8 days - Average sunshine days in November:
15.2 days - Average sunshine days in December:
21.3 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is June (11.4 days).
Average UV index
Shinjuku, Japan
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover
Shinjuku, Japan
The months with the most cloud cover are March, June and October (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Shinjuku, Japan
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
