Climate and monthly weather forecastChatan, Japan
Climate and monthly weather forecast
Weather in January
January, like December, in Chatan, Japan, is another refreshing winter month, with an average temperature ranging between min 16.8°C (62.2°F) and max 18.8°C (65.8°F). With average high temperatures of 18.8°C (65.8°F) and lows of 16.8°C (62.2°F), January is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Chatan, is also an enjoyable month, with an average temperature varying between 19.4°C (66.9°F) and 17.2°C (63°F). The arrival of February coincides with an average high-temperature of a still enjoyable 19.4°C (66.9°F), indicating a minimal shift from January's 18.8°C (65.8°F). Weather in February »Weather in March
March, the first month of the spring in Chatan, is an agreeable month, with temperature in the range of an average low of 18.3°C (64.9°F) and an average high of 20.4°C (68.7°F). Upon the onset of March, Chatan witnesses an average high-temperature of a pleasant 20.4°C (68.7°F), showing a close resemblance to the prior month. Weather in March »Weather in April
April, the same as March, in Chatan, Japan, is another pleasant spring month, with temperature in the range of an average low of 20.3°C (68.5°F) and an average high of 22.2°C (72°F). Chatan observes an average high-temperature of a still pleasant 22.2°C (72°F) in April, barely different from 20.4°C (68.7°F) in March. Weather in April »Weather in May
May, the last month of the spring in Chatan, is a warm month, with temperature in the range of an average high of 24.8°C (76.6°F) and an average low of 23°C (73.4°F). In May, Chatan's weather conditions record an average high-temperature of a warm 24.8°C (76.6°F), demonstrating little divergence from the preceding month. Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Chatan, Japan, with an average temperature varying between 27.2°C (81°F) and 25.8°C (78.4°F). The advent of June observes an average high-temperature of a still moderately hot 27.2°C (81°F), nearly identical to May's 24.8°C (76.6°F). Weather in June »Weather in July
July, like June, in Chatan, Japan, is another warm summer month, with temperature in the range of an average low of 27.8°C (82°F) and an average high of 29.1°C (84.4°F). Chatan registers an average high-temperature of a still warm 29.1°C (84.4°F) with the arrival of July, showing minor deviation from the preceding month. Weather in July »Weather in August
August, the last month of the summer in Chatan, is another warm month, with an average temperature varying between 28.2°C (82.8°F) and 29.5°C (85.1°F). August tends to be the warmest month, with temperatures averaging a daily high of 29.5°C (85.1°F) and a low of 28.2°C (82.8°F). The average heat index in August is appraised at a sweltering 36°C (96.8°F). Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Chatan, Japan, with an average temperature fluctuating between 28.6°C (83.5°F) and 27.4°C (81.3°F). The high-temperature average in September for Chatan is a still moderately hot 28.6°C (83.5°F), staying closely aligned with August's conditions. Weather in September »Weather in October
October, the same as September, is a moderately hot autumn month in Chatan, Japan, with an average temperature ranging between min 25°C (77°F) and max 26.4°C (79.5°F). Chatan experiences an average high-temperature of a still warm 26.4°C (79.5°F) in October, marking an insignificant shift from 28.6°C (83.5°F) in September. Weather in October »Weather in November
November, the last month of the autumn in Chatan, is another warm month, with an average temperature fluctuating between 22.1°C (71.8°F) and 23.9°C (75°F). The advent of November observes an average high-temperature of a still warm 23.9°C (75°F), nearly identical to October's 26.4°C (79.5°F). Weather in November »Weather in December
The first month of the winter, December, is also an agreeable month in Chatan, Japan, with an average temperature ranging between min 18.6°C (65.5°F) and max 20.5°C (68.9°F). With the arrival of December, Chatan experiences a modest decline in average high-temperatures, transitioning from a warm 23.9°C (75°F) in November to a pleasant 20.5°C (68.9°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
With average high temperatures of 18.8°C (65.8°F) and lows of 16.8°C (62.2°F), January is the coldest month in Chatan.
January is the least humid month in Chatan, Japan, with an average relative humidity of 72%.
January and February are months with the least rain in Chatan, Japan, when the rain falls for 19 days and typically aggregates up to 53mm (2.09") of rain.
Throughout the year, in Chatan, there are 215.5 rainfall days, and 1300mm (51.18") of precipitation is accumulated.
The month with the least sunshine is January, with an average of 4.3h of sunshine.
The month with the coldest seawater in Chatan is February, with an average sea temperature of 20.9°C (69.6°F).
The most humid month in Chatan is June, with an average relative humidity of 86%.
The month with the most rainfall in Chatan, Japan, is June, when the rain falls for 19.4 days and typically aggregates up to 198mm (7.8") of precipitation.
With an average of 13h and 48min of daylight, June has the longest days of the year in Chatan, Japan.
June through September, with an average maximum UV index of 7, are months with the highest UV index in Chatan.
With an average of 10.5h of sunshine, July has the most sunshine of the year.
The warmest period in Chatan tends to be August, when average temperatures fluctuate between a high of 29.5°C (85.1°F) and a low of 28.2°C (82.8°F).
August is the month with the warmest seawater, with an average sea temperature of 28.7°C (83.7°F).
The month with the shortest days in Chatan is December, with an average of 10h and 30min of daylight.
Chatan, Japan, does not utilize Daylight Saving Time (DST). JST timezone is used throughout the entire year.
With an average maximum UV index of 4, December is the month with the lowest UV index in Chatan.
Average temperature
Chatan, Japan
The warmest month (with the highest average high temperature) is August (29.5°C).
The month with the lowest average high temperature is January (18.8°C).
The month with the highest average low temperature is August (28.2°C).
The coldest month (with the lowest average low temperature) is January (16.8°C).
Average pressure
Chatan, Japan
- Average pressure in January:
1020.9mbar - Average pressure in February:
1019.6mbar - Average pressure in March:
1018mbar - Average pressure in April:
1015.1mbar - Average pressure in May:
1011.2mbar - Average pressure in June:
1008.2mbar
- Average pressure in July:
1008.4mbar - Average pressure in August:
1006.6mbar - Average pressure in September:
1009.1mbar - Average pressure in October:
1012.9mbar - Average pressure in November:
1017.9mbar - Average pressure in December:
1019.9mbar
The month with the highest atmospheric pressure is January (1020.9mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).
Average wind speed
Chatan, Japan
- Average wind speed in January:
26.5km/h - Average wind speed in February:
25km/h - Average wind speed in March:
24.5km/h - Average wind speed in April:
22.5km/h - Average wind speed in May:
19.5km/h - Average wind speed in June:
21.2km/h
- Average wind speed in July:
21.6km/h - Average wind speed in August:
21.7km/h - Average wind speed in September:
22.6km/h - Average wind speed in October:
27.2km/h - Average wind speed in November:
25.4km/h - Average wind speed in December:
27.6km/h
The windiest month (with the highest average wind speed) is December (27.6km/h).
The calmest month (with the lowest average wind speed) is May (19.5km/h).
Average humidity
Chatan, Japan
The month with the highest relative humidity is June (86%).
The month with the lowest relative humidity is January (72%).
Average rainfall
Chatan, Japan
- Average rainfall in January:
53mm - Average rainfall in February:
53mm - Average rainfall in March:
72mm - Average rainfall in April:
89mm - Average rainfall in May:
174mm - Average rainfall in June:
198mm
The wettest month (with the highest rainfall) is June (198mm).
The driest months (with the least rainfall) are January and February (53mm).
Average rainfall days
Chatan, Japan
- Average rainfall days in January:
19 days - Average rainfall days in February:
16.7 days - Average rainfall days in March:
17.3 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
19.4 days
- Average rainfall days in July:
16.1 days - Average rainfall days in August:
19.1 days - Average rainfall days in September:
19.1 days - Average rainfall days in October:
19.7 days - Average rainfall days in November:
16.5 days - Average rainfall days in December:
18.5 days
The month with the highest number of rainy days is October (19.7 days).
The month with the least rainy days is July (16.1 days).
Average sea temperature
Chatan, Japan
The best month for swimming (with the highest average sea temperature) is August (28.7°C).
The coldest month (with the lowest average sea temperature) is February (20.9°C).
Average daylight / Average sunshine
Chatan, Japan
- Average daylight in January:
10h and 42min - Average daylight in February:
11h and 18min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 48min - Average daylight in May:
13h and 24min - Average daylight in June:
13h and 48min
- Average daylight in July:
13h and 36min - Average daylight in August:
13h and 6min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 30min - Average daylight in November:
10h and 54min - Average daylight in December:
10h and 30min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in January:
4h and 18min - Average sunshine in February:
5h and 18min - Average sunshine in March:
5h and 54min - Average sunshine in April:
6h and 54min - Average sunshine in May:
8h and 12min - Average sunshine in June:
8h and 54min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
9h and 6min - Average sunshine in September:
8h and 36min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days
Chatan, Japan
- Average sunshine days in January:
7.5 days - Average sunshine days in February:
8.7 days - Average sunshine days in March:
9.8 days - Average sunshine days in April:
11.5 days - Average sunshine days in May:
11.2 days - Average sunshine days in June:
9.3 days
- Average sunshine days in July:
12.6 days - Average sunshine days in August:
9.8 days - Average sunshine days in September:
7.1 days - Average sunshine days in October:
7.4 days - Average sunshine days in November:
9.5 days - Average sunshine days in December:
9.1 days
The month with the most sunshine days is July (12.6 days).
The month with the least sunshine days is September (7.1 days).
Average UV index
Chatan, Japan
The months with the highest UV index are June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 4).
Average cloud cover
Chatan, Japan
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility
Chatan, 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).
