Climate and monthly weather forecastOi, Japan
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Oi, Japan, with temperature in the range of an average high of 8.4°C (47.1°F) and an average low of 1.4°C (34.5°F). January, known for its average high temperature of 8.4°C (47.1°F) and an average low temperature of 1.4°C (34.5°F), is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Oi, is also a frosty month, with an average temperature varying between 9.3°C (48.7°F) and 2°C (35.6°F). Oi's February showcases an average high-temperature of a still chilly 9.3°C (48.7°F), hardly distinct from January's 8.4°C (47.1°F). Weather in February »Weather in March
March, the first month of the spring in Oi, is a moderate month, with temperature in the range of an average low of 5°C (41°F) and an average high of 13.1°C (55.6°F). The arrival of March signals a slight increase in the average high-temperature, moving from a frosty 9.3°C (48.7°F) in February to a refreshing 13.1°C (55.6°F). Weather in March »Weather in April
April is an enjoyable spring month in Oi, Japan, with an average temperature ranging between max 18°C (64.4°F) and min 9.3°C (48.7°F). As April sets, the average high-temperature shows a slight increase, moving up from a moderate 13.1°C (55.6°F) in March to a comfortable 18°C (64.4°F). Weather in April »Weather in May
The last month of the spring, May, is a moderately hot month in Oi, Japan, with an average temperature fluctuating between 23.9°C (75°F) and 15.3°C (59.5°F). Oi's May weather brings a rise in high-temperatures, moving from an enjoyable 18°C (64.4°F) in April to a moderately hot 23.9°C (75°F). Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Oi, Japan, with an average temperature fluctuating between 18.9°C (66°F) and 26.1°C (79°F). At the onset of June, Oi records an average high-temperature of a still warm 26.1°C (79°F), showing little deviation from the preceding month. Weather in June »Weather in July
July in Oi, Japan, is a hot summer month, with an average temperature fluctuating between 23.1°C (73.6°F) and 30.4°C (86.7°F). July's arrival signals a modest temperature shift, moving from a moderately hot 26.1°C (79°F) in June to a hot 30.4°C (86.7°F). Weather in July »Weather in August
The last month of the summer, August, is another hot month in Oi, Japan, with temperature in the range of an average high of 32°C (89.6°F) and an average low of 24.7°C (76.5°F). August is the month that records the highest temperatures, with averages ranging from a high of 32°C (89.6°F) to a low of 24.7°C (76.5°F). The heat index value for August is estimated at a scorching 40°C (104°F). Weather in August »Weather in September
September, the first month of the autumn in Oi, is also a moderately hot month, with temperature in the range of an average high of 27.4°C (81.3°F) and an average low of 20.5°C (68.9°F). During the shift to September, Oi records a mild decrease in average high-temperature, moving from a tropical 32°C (89.6°F) in August to a moderately hot 27.4°C (81.3°F). Weather in September »Weather in October
October, like September, is an agreeable autumn month in Oi, Japan, with temperature in the range of an average high of 21.5°C (70.7°F) and an average low of 15.2°C (59.4°F). With October's arrival, Oi's weather changes as the average high-temperature falls from a moderately hot 27.4°C (81.3°F) in September to a pleasant 21.5°C (70.7°F). Weather in October »Weather in November
The last month of the autumn, November, is also a moderate month in Oi, Japan, with temperature in the range of an average high of 15.8°C (60.4°F) and an average low of 9.5°C (49.1°F). Oi's average high-temperature decreases in November, falling from a pleasant 21.5°C (70.7°F) in October to a mild 15.8°C (60.4°F). Weather in November »Weather in December
The first month of the winter, December, is still a cool month in Oi, Japan, with an average temperature fluctuating between 10.5°C (50.9°F) and 4.3°C (39.7°F). Oi's progression into December includes a drop in the average high-temperature, from a refreshing 15.8°C (60.4°F) in November to a cool 10.5°C (50.9°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
Oi witnesses the coldest weather in January, with temperatures averaging a high of 8.4°C (47.1°F) and a low of 1.4°C (34.5°F).
January is the least humid month in Oi, Japan, with an average relative humidity of 58%.
Throughout the year, in Oi, Japan, there are 146.2 rainfall days, and 669mm (26.34") of precipitation is accumulated.
Months with snowfall are January through March and November.
Throughout the year, in Oi, Japan, there are 3.7 snowfall days, and 62mm (2.44") of snow is accumulated.
January is the month with the lowest UV index, with an average maximum UV index of 2.
The month with the most snowfall is February, when snow falls for 2.1 days and typically aggregates up to 39mm (1.54") of snow.
The months with the least sunshine in Oi are February and November, with an average of 6.2h of sunshine.
April through October and December are months without snowfall in Oi.
June and July, with an average relative humidity of 73%, are most humid months in Oi, Japan.
The month with the longest days in Oi is June, with an average of 14h and 30min of daylight.
With an average maximum UV index of 7, July is the month with the highest UV index in Oi, Japan.
With average high and low temperatures of 32°C (89.6°F) and 24.7°C (76.5°F) respectively, August is Oi's warmest month.
The month with the most sunshine in Oi, Japan, is August, with an average of 9.8h of sunshine.
October is the month with the most rainfall in Oi, Japan. Rain falls for 15.3 days and accumulates 102mm (4.02") of precipitation.
December is the month with the least rainfall. Rain falls for 5.8 days and accumulates 21mm (0.83") of precipitation.
With an average of 9h and 48min of daylight, December has the shortest days of the year in Oi, Japan.
Oi, Japan, does not observe Daylight Saving Time (DST). JST timezone is used throughout the entire year.
Average temperature
Oi, Japan
The warmest month (with the highest average high temperature) is August (32°C).
The month with the lowest average high temperature is January (8.4°C).
The month with the highest average low temperature is August (24.7°C).
The coldest month (with the lowest average low temperature) is January (1.4°C).
Average pressure
Oi, Japan
- Average pressure in January:
1016.6mbar - Average pressure in February:
1017.5mbar - Average pressure in March:
1015.7mbar - Average pressure in April:
1014.3mbar - Average pressure in May:
1012mbar - Average pressure in June:
1009.2mbar
- Average pressure in July:
1009.8mbar - Average pressure in August:
1010.3mbar - Average pressure in September:
1013.7mbar - Average pressure in October:
1016.8mbar - Average pressure in November:
1018.4mbar - Average pressure in December:
1016.6mbar
The month with the highest atmospheric pressure is November (1018.4mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed
Oi, Japan
- Average wind speed in January:
11.2km/h - Average wind speed in February:
11.3km/h - Average wind speed in March:
11.4km/h - Average wind speed in April:
11.5km/h - Average wind speed in May:
10.4km/h - Average wind speed in June:
9.4km/h
- Average wind speed in July:
8.7km/h - Average wind speed in August:
8.8km/h - Average wind speed in September:
9km/h - Average wind speed in October:
9.9km/h - Average wind speed in November:
8.9km/h - Average wind speed in December:
10.3km/h
The windiest month (with the highest average wind speed) is April (11.5km/h).
The calmest month (with the lowest average wind speed) is July (8.7km/h).
Average humidity
Oi, Japan
The months with the highest relative humidity are June and July (73%).
The month with the lowest relative humidity is January (58%).
Average rainfall
Oi, Japan
The wettest month (with the highest rainfall) is October (102mm).
The driest month (with the least rainfall) is December (21mm).
Average rainfall days
Oi, Japan
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
6.7 days - Average rainfall days in March:
11.7 days - Average rainfall days in April:
13.2 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
18.5 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
16.3 days - Average rainfall days in September:
14.7 days - Average rainfall days in October:
15.3 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
5.8 days
The month with the highest number of rainy days is June (18.5 days).
The month with the least rainy days is January (4.8 days).
Average snowfall
Oi, Japan
The month with the highest snowfall is February (39mm).
The months with the least snowfall are April, May, June, July, August, September, October and December (0mm).
Average snowfall days
Oi, Japan
- Average snowfall days in January:
1 days - Average snowfall days in February:
2.1 days - Average snowfall days in March:
0.5 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:
0.1 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).
Average daylight / Average sunshine
Oi, 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 42min - Average sunshine in February:
6h and 12min - Average sunshine in March:
7h and 0min - Average sunshine in April:
9h and 12min - Average sunshine in May:
9h and 30min - Average sunshine in June:
8h and 42min
- Average sunshine in July:
9h and 12min - Average sunshine in August:
9h and 48min - Average sunshine in September:
7h and 42min - Average sunshine in October:
6h and 42min - Average sunshine in November:
6h and 12min - Average sunshine in December:
6h and 30min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The months with the least sunshine are February and November (Average sunshine: 6h and 12min).
Average sunshine days
Oi, Japan
- Average sunshine days in January:
25.3 days - Average sunshine days in February:
18.7 days - Average sunshine days in March:
18 days - Average sunshine days in April:
15.1 days - Average sunshine days in May:
15.8 days - Average sunshine days in June:
9.1 days
- Average sunshine days in July:
9.9 days - Average sunshine days in August:
11.3 days - Average sunshine days in September:
11.7 days - Average sunshine days in October:
14.1 days - Average sunshine days in November:
19.2 days - Average sunshine days in December:
24.5 days
The month with the most sunshine days is January (25.3 days).
The month with the least sunshine days is June (9.1 days).
Average UV index
Oi, Japan
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover
Oi, Japan
The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility
Oi, Japan
The months with the highest visibility are January, February, March, April, May, November and December (10km).
The months with the lowest visibility are June, July, August, September and October (9km).
