Climate and monthly weather forecastOnomichi, Japan
Climate and monthly weather forecast
Weather in January
January, the same as December, in Onomichi, Japan, is another chilly winter month, with an average temperature fluctuating between 7.1°C (44.8°F) and 1.3°C (34.3°F). Onomichi's temperature records reveal January as the coldest month, marked by average highs of 7.1°C (44.8°F) and lows of 1.3°C (34.3°F). Weather in January »Weather in February
The last month of the winter, February, is another chilly month in Onomichi, Japan, with an average temperature fluctuating between 1.7°C (35.1°F) and 8.5°C (47.3°F). February's presence records an average high-temperature of a still chilly 8.5°C (47.3°F), closely mirroring January's climate. Weather in February »Weather in March
March, the first month of the spring in Onomichi, is a fresh month, with an average temperature varying between 3.9°C (39°F) and 12.1°C (53.8°F). The onset of March marks a slight increase in the average high-temperature, moving from a chilly 8.5°C (47.3°F) in February to a fresh 12.1°C (53.8°F). Weather in March »Weather in April
April is an enjoyable spring month in Onomichi, Japan, with an average temperature varying between 16.9°C (62.4°F) and 8.1°C (46.6°F). The shift from March to April introduces a subtle increase in the average high-temperature, moving from a cool 12.1°C (53.8°F) to an enjoyable 16.9°C (62.4°F). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Onomichi, Japan, with an average temperature varying between 22.4°C (72.3°F) and 13.1°C (55.6°F). With the transition into May, Onomichi experiences an increase in average high-temperatures, moving up from a comfortable 16.9°C (62.4°F) in April to a pleasant 22.4°C (72.3°F). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Onomichi, Japan, with an average temperature fluctuating between 17.2°C (63°F) and 25.3°C (77.5°F). The introduction of June notes a subtle temperature variation to a warm 25.3°C (77.5°F) from May's 22.4°C (72.3°F). Weather in June »Weather in July
July, like June, in Onomichi, Japan, is a moderately hot summer month, with temperature in the range of an average low of 21.8°C (71.2°F) and an average high of 29°C (84.2°F). Onomichi, Japan, in July experiences a slight uptick in the average high-temperature, adjusting from June's moderately hot 25.3°C (77.5°F) to a still warm 29°C (84.2°F). Weather in July »Weather in August
The last month of the summer, August, is a hot month in Onomichi, Japan, with an average temperature fluctuating between 22.9°C (73.2°F) and 30.8°C (87.4°F). The warmest period tends to be August, when average temperatures fluctuate between a high of 30.8°C (87.4°F) and a low of 22.9°C (73.2°F). Throughout August, the heat index is appraised at a blisteringly hot 40°C (104°F). Weather in August »Weather in September
September, the first month of the autumn in Onomichi, is still a warm month, with an average temperature varying between 26.3°C (79.3°F) and 18.7°C (65.7°F). The advent of September brings a subtle shift in temperature, with the average high moving from a tropical 30.8°C (87.4°F) in August to a warm 26.3°C (79.3°F). Weather in September »Weather in October
October, the same as September, in Onomichi, Japan, is an agreeable autumn month, with an average temperature fluctuating between 13.8°C (56.8°F) and 20.8°C (69.4°F). October suggests a modest reduction in the average high-temperature, shifting from a moderately hot 26.3°C (79.3°F) in September to a pleasant 20.8°C (69.4°F). Weather in October »Weather in November
November, the last month of the autumn in Onomichi, is also a moderate month, with temperature in the range of an average high of 15°C (59°F) and an average low of 8.6°C (47.5°F). Onset of November witnesses a reduction in the average high-temperature, falling from a pleasant 20.8°C (69.4°F) in October to a mild 15°C (59°F). Weather in November »Weather in December
The first month of the winter, December, is also a frosty month in Onomichi, Japan, with temperature in the range of an average high of 9.1°C (48.4°F) and an average low of 3.5°C (38.3°F). The arrival of December corresponds with a shift in temperature, down from a refreshing 15°C (59°F) in November to a chilly 9.1°C (48.4°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
Onomichi's coldest temperatures are experienced in January, with average high temperatures of 7.1°C (44.8°F) and lows of 1.3°C (34.3°F).
January is the month with the least rainfall in Onomichi, Japan. Rain falls for 6 days and accumulates 11mm (0.43") of precipitation.
In Onomichi, Japan, during the entire year, the rain falls for 118.5 days and collects up to 329mm (12.95") of precipitation.
Months with snowfall in Onomichi, Japan, are January, February and December.
January is the month with the most snowfall. Snow falls for 3 days and accumulates 6mm (0.24") of snow.
Throughout the year, in Onomichi, there are 6.5 snowfall days, and 13mm (0.51") of snow is accumulated.
The month with the least sunshine is January, with an average of 4.8h of sunshine.
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the coldest seawater in Onomichi is February, with an average sea temperature of 13.7°C (56.7°F).
March through November are months without snowfall in Onomichi.
With an average relative humidity of 71%, May is the least humid month in Onomichi.
June has the longest days of the year in Onomichi, Japan, with an average of 14h and 24min of daylight.
July is the most humid month, with an average relative humidity of 82%.
July is the month with the most rainfall. Rain falls for 15.3 days and accumulates 69mm (2.72") of precipitation.
July is the month with the highest UV index in Onomichi, Japan, with an average maximum UV index of 7.
The warmest temperatures occur during August, when averages reach a peak of 30.8°C (87.4°F) and a low of 22.9°C (73.2°F).
With an average sea temperature of 27.2°C (81°F), August is the month with the warmest seawater.
The month with the most sunshine in Onomichi is August, with an average of 10.6h of sunshine.
December has the shortest days of the year in Onomichi, Japan, with an average of 9h and 54min of daylight.
Onomichi, Japan, does not utilize Daylight Saving Time (DST). JST timezone is used over the entire year.
Average temperature
Onomichi, Japan
The warmest month (with the highest average high temperature) is August (30.8°C).
The month with the lowest average high temperature is January (7.1°C).
The month with the highest average low temperature is August (22.9°C).
The coldest month (with the lowest average low temperature) is January (1.3°C).
Average pressure
Onomichi, Japan
- Average pressure in January:
1020.8mbar - Average pressure in February:
1020.6mbar - 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:
1009mbar - Average pressure in September:
1012.6mbar - Average pressure in October:
1017mbar - Average pressure in November:
1020.1mbar - Average pressure in December:
1020.3mbar
The month with the highest atmospheric pressure is January (1020.8mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).
Average wind speed
Onomichi, Japan
- Average wind speed in January:
10.5km/h - Average wind speed in February:
9.2km/h - Average wind speed in March:
9.4km/h - Average wind speed in April:
8.9km/h - Average wind speed in May:
7.6km/h - Average wind speed in June:
6.9km/h
- Average wind speed in July:
7.4km/h - Average wind speed in August:
7.4km/h - Average wind speed in September:
7.3km/h - Average wind speed in October:
8.5km/h - Average wind speed in November:
8.3km/h - Average wind speed in December:
10.4km/h
The windiest month (with the highest average wind speed) is January (10.5km/h).
The calmest month (with the lowest average wind speed) is June (6.9km/h).
Average humidity
Onomichi, Japan
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is May (71%).
Average rainfall
Onomichi, Japan
The wettest month (with the highest rainfall) is July (69mm).
The driest month (with the least rainfall) is January (11mm).
Average rainfall days
Onomichi, Japan
- Average rainfall days in January:
6 days - Average rainfall days in February:
8.3 days - Average rainfall days in March:
9.4 days - Average rainfall days in April:
9.9 days - Average rainfall days in May:
8.4 days - Average rainfall days in June:
13.6 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
11 days - Average rainfall days in October:
8.3 days - Average rainfall days in November:
7.4 days - Average rainfall days in December:
8.6 days
The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (6 days).
Average snowfall
Onomichi, Japan
The month with the highest snowfall is January (6mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days
Onomichi, Japan
- Average snowfall days in January:
3 days - Average snowfall days in February:
2 days - Average snowfall days in March:
0.3 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:
1.1 days
The month with the highest number of snowfall days is January (3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average sea temperature
Onomichi, Japan
The best month for swimming (with the highest average sea temperature) is August (27.2°C).
The coldest month (with the lowest average sea temperature) is February (13.7°C).
Average daylight / Average sunshine
Onomichi, Japan
- Average daylight in January:
10h and 12min - 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 24min
- 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 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
4h and 48min - Average sunshine in February:
5h and 6min - Average sunshine in March:
7h and 18min - Average sunshine in April:
8h and 54min - Average sunshine in May:
9h and 42min - Average sunshine in June:
8h and 54min
- Average sunshine in July:
9h and 18min - Average sunshine in August:
10h and 36min - Average sunshine in September:
9h and 0min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 54min - Average sunshine in December:
5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days
Onomichi, Japan
- Average sunshine days in January:
21.3 days - Average sunshine days in February:
17.3 days - Average sunshine days in March:
20.1 days - Average sunshine days in April:
18.8 days - Average sunshine days in May:
21.6 days - Average sunshine days in June:
14.8 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
17.4 days - Average sunshine days in September:
17.6 days - Average sunshine days in October:
21.5 days - Average sunshine days in November:
21 days - Average sunshine days in December:
19.9 days
The month with the most sunshine days is May (21.6 days).
The month with the least sunshine days is July (13.3 days).
Average UV index
Onomichi, 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
Onomichi, Japan
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Onomichi, Japan
The month with the highest visibility is January (10km).
The months with the lowest visibility are February, March, April, May, June, July, August, September, October, November and December (9km).
