Climate and monthly weather forecastNiimi, Japan
Climate and monthly weather forecast
Weather in January
January, like December, is a frosty winter month in Niimi, Japan, with an average temperature fluctuating between 1°C (33.8°F) and 6.9°C (44.4°F). January, with average temperatures reaching a high of 6.9°C (44.4°F) and a low of 1°C (33.8°F), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is also a frosty month in Niimi, Japan, with temperature in the range of an average low of 1.8°C (35.2°F) and an average high of 8.2°C (46.8°F). As February takes hold, the average high-temperature is a still frosty 8.2°C (46.8°F), nearly mirroring that of the previous month. Weather in February »Weather in March
March, the first month of the spring in Niimi, is a fresh month, with an average temperature ranging between max 12°C (53.6°F) and min 4°C (39.2°F). The shift into March is accompanied by a modest temperature increase, with the average high-temperature edging up from a frosty 8.2°C (46.8°F) in February to a cool 12°C (53.6°F). Weather in March »Weather in April
April is an enjoyable spring month in Niimi, Japan, with an average temperature varying between 16.8°C (62.2°F) and 8.2°C (46.8°F). Niimi, Japan, observes a slight uplift in the average high-temperature with the onset of April, adjusting from March's fresh 12°C (53.6°F) to a comfortable 16.8°C (62.2°F). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Niimi, Japan, with an average temperature varying between 22.6°C (72.7°F) and 13.1°C (55.6°F). In May, the meteorological conditions change with the average high-temperature moving from an enjoyable 16.8°C (62.2°F) in April to a pleasant 22.6°C (72.7°F). Weather in May »Weather in June
June, the first month of the summer in Niimi, is a moderately hot month, with an average temperature varying between 25.1°C (77.2°F) and 17.3°C (63.1°F). The shift to June signals an average high-temperature of a warm 25.1°C (77.2°F), subtly varied from May's 22.6°C (72.7°F). Weather in June »Weather in July
July, the same as June, is another warm summer month in Niimi, Japan, with an average temperature varying between 22°C (71.6°F) and 28.8°C (83.8°F). Niimi in July denotes a subtle temperature transition, adjusting from an average high of a moderately hot 25.1°C (77.2°F) in June to a still warm 28.8°C (83.8°F). Weather in July »Weather in August
August, the last month of the summer in Niimi, is a hot month, with an average temperature fluctuating between 30.5°C (86.9°F) and 23.3°C (73.9°F). Temperature readings reach their annual highs in August, averaging 30.5°C (86.9°F) and a minimum average of 23.3°C (73.9°F). In August, the average heat index is evaluated at a very hot 39°C (102.2°F). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Niimi, Japan, with temperature in the range of an average high of 25.9°C (78.6°F) and an average low of 19°C (66.2°F). Niimi's weather subtly changes with the onset of September, barely falling from a hot 30.5°C (86.9°F) in August to a moderately hot 25.9°C (78.6°F). Weather in September »Weather in October
October, the same as September, in Niimi, Japan, is an agreeable autumn month, with temperature in the range of an average high of 20.7°C (69.3°F) and an average low of 13.7°C (56.7°F). A moderate decline in the average high-temperature is seen during October, decreasing from a warm 25.9°C (78.6°F) in September to an agreeable 20.7°C (69.3°F). Weather in October »Weather in November
The last month of the autumn, November, is another mild month in Niimi, Japan, with an average temperature ranging between min 8.5°C (47.3°F) and max 15°C (59°F). November ushers in a slight temperature change, with average high-temperatures reducing from October's agreeable 20.7°C (69.3°F) to a refreshing 15°C (59°F). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Niimi, Japan, with an average temperature varying between 3.5°C (38.3°F) and 9°C (48.2°F). December's onset corresponds with a shift in the average high-temperature, moving from a refreshing 15°C (59°F) in November to a chilly 9°C (48.2°F). Weather in December »Updated: Jan 31, 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 is the coldest month, with an average high-temperature of 6.9°C (44.4°F) and an average low-temperature of 1°C (33.8°F).
In Niimi, during the entire year, the rain falls for 148 days and collects up to 439mm (17.28") of precipitation.
January through March and December are months with snowfall in Niimi, Japan.
In Niimi, Japan, during the entire year, snow falls for 10.8 days and aggregates up to 25mm (0.98") of snow.
The months with the least sunshine are January, February and December, with an average of 5.1h of sunshine.
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Niimi.
February is the month with the most snowfall in Niimi, Japan. Snow falls for 3.3 days and accumulates 11mm (0.43") of snow.
In Niimi, snow does not fall in April through November.
May is the least humid month, with an average relative humidity of 71%.
The month with the longest days in Niimi, Japan, is June, with an average of 14h and 30min of daylight.
The most humid month in Niimi, Japan, is July, with an average relative humidity of 82%.
July is the month with the most rainfall in Niimi, Japan. Rain falls for 21.3 days and accumulates 81mm (3.19") of precipitation.
The month with the highest UV index in Niimi, Japan, is July, with an average maximum UV index of 7.
Niimi's August weather reaches an average high of 30.5°C (86.9°F) and an average low of 23.3°C (73.9°F), making it the warmest month.
August has the most sunshine of the year in Niimi, with an average of 10.8h of sunshine.
The month with the least rainfall in Niimi is November, when the rain falls for 8.6 days and typically collects 12mm (0.47") of precipitation.
December has the shortest days of the year in Niimi, with an average of 9h and 54min of daylight.
Niimi does not utilize Daylight Saving Time (DST). JST timezone is used over the entire year.
Average temperature
Niimi, Japan
The warmest month (with the highest average high temperature) is August (30.5°C).
The month with the lowest average high temperature is January (6.9°C).
The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (1°C).
Average pressure
Niimi, Japan
- Average pressure in January:
1020.5mbar - Average pressure in February:
1020.5mbar - Average pressure in March:
1018.1mbar - Average pressure in April:
1015.1mbar - Average pressure in May:
1012.1mbar - Average pressure in June:
1008.4mbar
- Average pressure in July:
1008.7mbar - Average pressure in August:
1009.1mbar - Average pressure in September:
1012.6mbar - Average pressure in October:
1017.1mbar - Average pressure in November:
1020mbar - Average pressure in December:
1020.1mbar
The months with the highest atmospheric pressure are January and February (1020.5mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).
Average wind speed
Niimi, Japan
- Average wind speed in January:
11.6km/h - Average wind speed in February:
9.9km/h - Average wind speed in March:
9.9km/h - Average wind speed in April:
9.3km/h - Average wind speed in May:
8km/h - Average wind speed in June:
7km/h
- Average wind speed in July:
7.3km/h - Average wind speed in August:
7.5km/h - Average wind speed in September:
7.8km/h - Average wind speed in October:
8.6km/h - Average wind speed in November:
8.8km/h - Average wind speed in December:
11.4km/h
The windiest month (with the highest average wind speed) is January (11.6km/h).
The calmest month (with the lowest average wind speed) is June (7km/h).
Average humidity
Niimi, Japan
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is May (71%).
Average rainfall
Niimi, Japan
The wettest month (with the highest rainfall) is July (81mm).
The driest month (with the least rainfall) is November (12mm).
Average rainfall days
Niimi, Japan
- Average rainfall days in January:
9 days - Average rainfall days in February:
9.8 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
10.8 days - Average rainfall days in May:
10.5 days - Average rainfall days in June:
15.1 days
- Average rainfall days in July:
21.3 days - Average rainfall days in August:
17.8 days - Average rainfall days in September:
13 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
11.5 days
The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is November (8.6 days).
Average snowfall
Niimi, Japan
The month with the highest snowfall is February (11mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days
Niimi, Japan
- Average snowfall days in January:
4.5 days - Average snowfall days in February:
3.3 days - Average snowfall days in March:
0.8 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:
2.2 days
The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Niimi, 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 12min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 24min - Average daylight in December:
9h and 54min
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 54min).
- Average sunshine in January:
5h and 6min - Average sunshine in February:
5h and 6min - Average sunshine in March:
7h and 36min - Average sunshine in April:
9h and 18min - Average sunshine in May:
9h and 48min - Average sunshine in June:
9h and 18min
- Average sunshine in July:
9h and 36min - Average sunshine in August:
10h and 48min - Average sunshine in September:
9h and 18min - Average sunshine in October:
6h and 12min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days
Niimi, Japan
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
18.1 days - Average sunshine days in April:
17.3 days - Average sunshine days in May:
18.9 days - Average sunshine days in June:
12.7 days
- Average sunshine days in July:
7.3 days - Average sunshine days in August:
9.7 days - Average sunshine days in September:
13.9 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
18.4 days - Average sunshine days in December:
16.5 days
The month with the most sunshine days is May (18.9 days).
The month with the least sunshine days is July (7.3 days).
Average UV index
Niimi, 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 2).
Average cloud cover
Niimi, Japan
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility
Niimi, Japan
The months with the highest visibility are January, February, March, August, October, November and December (10km).
The months with the lowest visibility are April, May, June, July and September (9km).
