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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, the same as December, is another cold winter month in Koriyama, Japan, with an average temperature varying between -5.7°C (21.7°F) and 1°C (33.8°F). Koriyama's coldest temperatures are experienced in January, with average high temperatures of 1°C (33.8°F) and lows of -5.7°C (21.7°F). Weather in January »
Weather in February
February, the last month of the winter in Koriyama, is another cold month, with an average temperature varying between -5.4°C (22.3°F) and 1.9°C (35.4°F). The beginning of February records an average high-temperature of a still wintry 1.9°C (35.4°F), almost echoing the conditions of the previous month. Weather in February »
Weather in March
March, the first month of the spring in Koriyama, is a frosty month, with an average temperature varying between -1.8°C (28.8°F) and 6.8°C (44.2°F). A subtle rise in the average high-temperature is observed during March, adjusting from a wintry 1.9°C (35.4°F) in February to a chilly 6.8°C (44.2°F). Weather in March »
Weather in April
April is a cool spring month in Koriyama, Japan, with an average temperature ranging between min 3.1°C (37.6°F) and max 12.9°C (55.2°F). The shift from March to April sees an increase in the average high-temperature, transitioning from a frosty 6.8°C (44.2°F) to a cool 12.9°C (55.2°F). Weather in April »
Weather in May
May, the last month of the spring in Koriyama, is an agreeable month, with an average temperature varying between 8.9°C (48°F) and 20.1°C (68.2°F). As Koriyama welcomes May, the average high-temperature sees a rise, transitioning from a fresh 12.9°C (55.2°F) in April to a pleasant 20.1°C (68.2°F). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Koriyama, Japan, with an average temperature ranging between min 12.9°C (55.2°F) and max 23°C (73.4°F). Koriyama's weather in June indicates an average high-temperature of a warm 23°C (73.4°F), nearly consistent with the 20.1°C (68.2°F) of May. Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Koriyama, Japan, with an average temperature varying between 17.8°C (64°F) and 27°C (80.6°F). July's arrival signals a modest temperature shift, moving from a warm 23°C (73.4°F) in June to a still moderately hot 27°C (80.6°F). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Koriyama, Japan, with an average temperature varying between 28.3°C (82.9°F) and 18.7°C (65.7°F). August stands out as Koriyama's warmest month, with an average high-temperature of 28.3°C (82.9°F) and a low-temperature of 18.7°C (65.7°F). The average heat index in August is estimated at a hot 33°C (91.4°F). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Koriyama, Japan, with an average temperature varying between 23.4°C (74.1°F) and 14.3°C (57.7°F). September sees a slight reduction in average high-temperature, with a shift from a warm 28.3°C (82.9°F) in August to a still moderately hot 23.4°C (74.1°F). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Koriyama, Japan, with an average temperature varying between 8.5°C (47.3°F) and 17.1°C (62.8°F). Stepping into October, Koriyama observes a temperature decline, with the average high falling from September's warm 23.4°C (74.1°F) to an enjoyable 17.1°C (62.8°F). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Koriyama, Japan, with temperature in the range of an average low of 3.2°C (37.8°F) and an average high of 10.7°C (51.3°F). As October transitions to November, the average high-temperature falls from a comfortable 17.1°C (62.8°F) to a fresh 10.7°C (51.3°F). Weather in November »
Weather in December
December, the first month of the winter in Koriyama, is still a cold month, with an average temperature fluctuating between -2°C (28.4°F) and 4.3°C (39.7°F). Koriyama's progression into December includes a drop in the average high-temperature, from a cool 10.7°C (51.3°F) in November to a wintry 4.3°C (39.7°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
What month is the coldest in Koriyama?
In Koriyama, January records the average lowest temperatures, peaking at 1°C (33.8°F) and reaching a low of -5.7°C (21.7°F).
What are the most humid months in Koriyama?
January and February, with an average relative humidity of 85%, are most humid months.
How many days does it rain in Koriyama?
In Koriyama, during the entire year, the rain falls for 183.1 days and collects up to 848mm (33.39") of precipitation.
When does it snow in Koriyama?
Months with snowfall in Koriyama are January through April, November and December.
When does it snow the most in Koriyama?
The month with the most snowfall in Koriyama is January, when snow falls for 17.2 days and typically aggregates up to 177mm (6.97") of snow.
How much does it snow in Koriyama?
Throughout the year, in Koriyama, there are 56.8 snowfall days, and 576mm (22.68") of snow is accumulated.
What is the month with the lowest UV index in Koriyama?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Koriyama.
What is the driest month in Koriyama?
February is the month with the least rainfall in Koriyama, Japan. Rain falls for 10.6 days and accumulates 33mm (1.3") of precipitation.
What is the month with the least sunshine in Koriyama?
February has the least sunshine of the year in Koriyama, Japan, with an average of 5.1h of sunshine.
What is the least humid month in Koriyama?
With an average relative humidity of 73%, May is the least humid month.
When it does not snow in Koriyama?
In Koriyama, snow does not fall in May through October.
What month has the most sunshine in Koriyama?
With an average of 9.5h of sunshine, May has the most sunshine of the year.
When are the longest days in Koriyama?
With an average of 14h and 42min of daylight, June has the longest days of the year in Koriyama.
What is the rainiest month in Koriyama?
July is the month with the most rainfall. Rain falls for 24.1 days and accumulates 127mm (5") of precipitation.
What is the month with the highest UV index in Koriyama?
The month with the highest UV index in Koriyama, Japan, is July, with an average maximum UV index of 6.
What is the warmest month in Koriyama?
August proves to be the warmest month, recording an average peak temperature of 28.3°C (82.9°F) and a minimum temperature of 18.7°C (65.7°F).
What is the month with the shortest days in Koriyama?
The month with the shortest days in Koriyama, Japan, is December, with an average of 9h and 36min of daylight.
Is there Daylight Saving Time (DST) in Koriyama?
Koriyama, Japan, does not observe Daylight Saving Time (DST). JST timezone is used throughout the entire year.
Average temperature
Koriyama, Japan
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (1°C).
The month with the highest average low temperature is August (18.7°C).
The coldest month (with the lowest average low temperature) is January (-5.7°C).
Average pressure
Koriyama, Japan
- Average pressure in January:
1016.7mbar - Average pressure in February:
1018mbar - Average pressure in March:
1016.3mbar - Average pressure in April:
1014.7mbar - Average pressure in May:
1012.1mbar - Average pressure in June:
1009.3mbar
- Average pressure in July:
1009.6mbar - Average pressure in August:
1010.3mbar - Average pressure in September:
1014.1mbar - Average pressure in October:
1017.5mbar - Average pressure in November:
1018.8mbar - Average pressure in December:
1016.6mbar
The month with the highest atmospheric pressure is November (1018.8mbar).
The month with the lowest atmospheric pressure is June (1009.3mbar).
Average wind speed
Koriyama, Japan
- Average wind speed in January:
12.1km/h - Average wind speed in February:
11.8km/h - Average wind speed in March:
11.8km/h - Average wind speed in April:
11.2km/h - Average wind speed in May:
9.7km/h - Average wind speed in June:
7.8km/h
- Average wind speed in July:
6.9km/h - Average wind speed in August:
6.7km/h - Average wind speed in September:
7.4km/h - Average wind speed in October:
8.7km/h - Average wind speed in November:
9.3km/h - Average wind speed in December:
11.4km/h
The windiest month (with the highest average wind speed) is January (12.1km/h).
The calmest month (with the lowest average wind speed) is August (6.7km/h).
Average humidity
Koriyama, Japan
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is May (73%).
Average rainfall
Koriyama, Japan
The wettest month (with the highest rainfall) is July (127mm).
The driest month (with the least rainfall) is February (33mm).
Average rainfall days
Koriyama, Japan
- Average rainfall days in January:
11 days - Average rainfall days in February:
10.6 days - Average rainfall days in March:
12.8 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
14.6 days - Average rainfall days in June:
19.1 days
- Average rainfall days in July:
24.1 days - Average rainfall days in August:
22.3 days - Average rainfall days in September:
15.5 days - Average rainfall days in October:
13.8 days - Average rainfall days in November:
11.6 days - Average rainfall days in December:
12.8 days
The month with the highest number of rainy days is July (24.1 days).
The month with the least rainy days is February (10.6 days).
Average snowfall
Koriyama, Japan
The month with the highest snowfall is January (177mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days
Koriyama, Japan
- Average snowfall days in January:
17.2 days - Average snowfall days in February:
13.9 days - Average snowfall days in March:
9.5 days - Average snowfall days in April:
2 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:
1.4 days - Average snowfall days in December:
12.8 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Koriyama, Japan
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 4min
- Average daylight in July:
14h and 3min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in January:
5h and 2min - Average sunshine in February:
5h and 1min - Average sunshine in March:
6h and 3min - Average sunshine in April:
9h and 0min - Average sunshine in May:
9h and 3min - Average sunshine in June:
8h and 5min
- Average sunshine in July:
8h and 2min - Average sunshine in August:
9h and 0min - Average sunshine in September:
7h and 1min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 3min
The month with the most sunshine is May (Average sunshine: 9h and 30min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days
Koriyama, Japan
- Average sunshine days in January:
10 days - Average sunshine days in February:
9.8 days - Average sunshine days in March:
11.4 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
14.5 days - Average sunshine days in June:
8.6 days
- Average sunshine days in July:
4.6 days - Average sunshine days in August:
6 days - Average sunshine days in September:
12.3 days - Average sunshine days in October:
14.3 days - Average sunshine days in November:
14.8 days - Average sunshine days in December:
9.5 days
The month with the most sunshine days is November (14.8 days).
The month with the least sunshine days is July (4.6 days).
Average UV index
Koriyama, Japan
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Koriyama, Japan
The month with the most cloud cover is July (Cloud cover 54).
The month with the least cloud cover is May (Cloud cover 39).
Average visibility
Koriyama, Japan
The months with the highest visibility are April and May (9km).
The months with the lowest visibility are July, August and September (7km).
