Climate and monthly weather forecastKaratsu, Japan
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Karatsu, Japan, with an average temperature varying between 4.9°C (40.8°F) and 8.8°C (47.8°F). January, having an average high-temperature of 8.8°C (47.8°F) and an average low-temperature of 4.9°C (40.8°F), is the coldest month. Weather in January »Weather in February
The last month of the winter, February, is a cool month in Karatsu, Japan, with temperature in the range of an average low of 5.8°C (42.4°F) and an average high of 10.1°C (50.2°F). Entering February, the average high-temperature is recorded at a fresh 10.1°C (50.2°F), exhibiting a minimal shift from January's 8.8°C (47.8°F). Weather in February »Weather in March
The first month of the spring, March, is still a cool month in Karatsu, Japan, with an average temperature fluctuating between 8°C (46.4°F) and 12.9°C (55.2°F). Karatsu notes an average high-temperature of a still fresh 12.9°C (55.2°F) in March, hardly diverging from February. Weather in March »Weather in April
April in Karatsu, Japan, is a refreshing spring month, with an average temperature fluctuating between 16.9°C (62.4°F) and 11.4°C (52.5°F). With the onset of April, Karatsu observes a minor temperature ascent, with the average high-temperature adjusting from March's fresh 12.9°C (55.2°F) to a refreshing 16.9°C (62.4°F). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Karatsu, Japan, with an average temperature fluctuating between 21.3°C (70.3°F) and 15.6°C (60.1°F). The shift from April to May is marked by a slight increase in the average high-temperature, moving from an enjoyable 16.9°C (62.4°F) to a pleasant 21.3°C (70.3°F). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Karatsu, Japan, with temperature in the range of an average high of 23.9°C (75°F) and an average low of 19.5°C (67.1°F). The onset of June notes an average high-temperature of a moderately hot 23.9°C (75°F), subtly shifted from May's 21.3°C (70.3°F). Weather in June »Weather in July
July, like June, in Karatsu, Japan, is another warm summer month, with an average temperature varying between 23.3°C (73.9°F) and 27.5°C (81.5°F). In Karatsu, stepping into July brings a gentle temperature nudge, moving slightly up from June's 23.9°C (75°F) to a still warm 27.5°C (81.5°F). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Karatsu, Japan, with an average temperature ranging between min 24.6°C (76.3°F) and max 29.3°C (84.7°F). August is Karatsu's warmest month, registering average high temperatures of 29.3°C (84.7°F) and lows of 24.6°C (76.3°F). For August, the heat index is computed to be 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 Karatsu, Japan, with an average temperature varying between 25.6°C (78.1°F) and 21.5°C (70.7°F). Karatsu's September weather features a light decline in high-temperatures, reducing from 29.3°C (84.7°F) in August to a still warm 25.6°C (78.1°F). Weather in September »Weather in October
October, like September, is another pleasant autumn month in Karatsu, Japan, with an average temperature varying between 21.5°C (70.7°F) and 17.3°C (63.1°F). The commencement of October indicates a gentle shift in the average high-temperature, receding from September's warm 25.6°C (78.1°F) to an agreeable 21.5°C (70.7°F). Weather in October »Weather in November
The last month of the autumn, November, is also an enjoyable month in Karatsu, Japan, with an average temperature ranging between max 16.3°C (61.3°F) and min 12.3°C (54.1°F). November's arrival coincides with a drop in the average high-temperature, decreasing from October's agreeable 21.5°C (70.7°F) to a comfortable 16.3°C (61.3°F). Weather in November »Weather in December
The first month of the winter, December, is still a cool month in Karatsu, Japan, with an average temperature ranging between min 7°C (44.6°F) and max 10.8°C (51.4°F). Karatsu's weather changes with the onset of December, slightly falling from a comfortable 16.3°C (61.3°F) in November to a cool 10.8°C (51.4°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
January is Karatsu's coldest month, registering average high temperatures of 8.8°C (47.8°F) and lows of 4.9°C (40.8°F).
January through March, with an average relative humidity of 71%, are the least humid months in Karatsu.
January is the month with the least rainfall in Karatsu, Japan. Rain falls for 9.7 days and accumulates 18mm (0.71") of precipitation.
In Karatsu, during the entire year, the rain falls for 149.2 days and collects up to 456mm (17.95") of precipitation.
January, February and December are months with snowfall in Karatsu.
The month with the most snowfall in Karatsu is January, when snow falls for 2.5 days and typically aggregates up to 2mm (0.08") of snow.
Throughout the year, there are 4.8 snowfall days, and 4mm (0.16") of snow is accumulated.
January and December, with an average of 4.2h of sunshine, are months with the least sunshine in Karatsu, Japan.
The months with the lowest UV index in Karatsu are January and December, with an average maximum UV index of 2.
In Karatsu, snow does not fall in March through November.
June has the longest days of the year in Karatsu, with an average of 14h and 18min of daylight.
July is the most humid month in Karatsu, with an average relative humidity of 86%.
The month with the most rainfall in Karatsu is July, when the rain falls for 20.1 days and typically aggregates up to 105mm (4.13") of precipitation.
With an average maximum UV index of 7, July is the month with the highest UV index.
August is the warmest month in Karatsu, with an average high-temperature of 29.3°C (84.7°F) and an average low-temperature of 24.6°C (76.3°F).
The month with the most sunshine in Karatsu is August, with an average of 10.1h of sunshine.
With an average of 10h and 0min of daylight, December has the shortest days of the year in Karatsu.
Karatsu, Japan, does not utilize Daylight Saving Time (DST). JST timezone is used over the entire year.
Average temperature
Karatsu, Japan
The warmest month (with the highest average high temperature) is August (29.3°C).
The month with the lowest average high temperature is January (8.8°C).
The month with the highest average low temperature is August (24.6°C).
The coldest month (with the lowest average low temperature) is January (4.9°C).
Average pressure
Karatsu, Japan
- Average pressure in January:
1022.2mbar - Average pressure in February:
1021.1mbar - Average pressure in March:
1018.6mbar - Average pressure in April:
1015.3mbar - Average pressure in May:
1012mbar - Average pressure in June:
1008.1mbar
- Average pressure in July:
1008.3mbar - Average pressure in August:
1008.4mbar - Average pressure in September:
1012.1mbar - Average pressure in October:
1016.9mbar - Average pressure in November:
1020.4mbar - Average pressure in December:
1021.6mbar
The month with the highest atmospheric pressure is January (1022.2mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).
Average wind speed
Karatsu, Japan
- Average wind speed in January:
16.4km/h - Average wind speed in February:
15.9km/h - Average wind speed in March:
16.1km/h - Average wind speed in April:
14.2km/h - Average wind speed in May:
11.8km/h - Average wind speed in June:
10.7km/h
- Average wind speed in July:
11.9km/h - Average wind speed in August:
11.6km/h - Average wind speed in September:
13.5km/h - Average wind speed in October:
15.7km/h - Average wind speed in November:
14km/h - Average wind speed in December:
16.2km/h
The windiest month (with the highest average wind speed) is January (16.4km/h).
The calmest month (with the lowest average wind speed) is June (10.7km/h).
Average humidity
Karatsu, Japan
The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are January, February and March (71%).
Average rainfall
Karatsu, Japan
The wettest month (with the highest rainfall) is July (105mm).
The driest month (with the least rainfall) is January (18mm).
Average rainfall days
Karatsu, Japan
- Average rainfall days in January:
9.7 days - Average rainfall days in February:
10.3 days - Average rainfall days in March:
11.5 days - Average rainfall days in April:
10.6 days - Average rainfall days in May:
9.4 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
20.1 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
14.5 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
10.8 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is May (9.4 days).
Average snowfall
Karatsu, Japan
The month with the highest snowfall is January (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days
Karatsu, Japan
- Average snowfall days in January:
2.5 days - Average snowfall days in February:
1.3 days - Average snowfall days in March:
0.2 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:
0.8 days
The month with the highest number of snowfall days is January (2.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Karatsu, Japan
- Average daylight in January:
10h and 12min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 0min - Average daylight in May:
13h and 54min - Average daylight in June:
14h and 18min
- Average daylight in July:
14h and 6min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 24min - Average daylight in November:
10h and 30min - Average daylight in December:
10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in January:
4h and 12min - Average sunshine in February:
5h and 18min - Average sunshine in March:
6h and 42min - Average sunshine in April:
8h and 18min - Average sunshine in May:
8h and 48min - Average sunshine in June:
7h and 42min
- Average sunshine in July:
8h and 24min - Average sunshine in August:
10h and 6min - Average sunshine in September:
7h and 42min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days
Karatsu, Japan
- Average sunshine days in January:
16.3 days - Average sunshine days in February:
14.2 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
16.6 days - Average sunshine days in May:
19.4 days - Average sunshine days in June:
11.3 days
- Average sunshine days in July:
7.9 days - Average sunshine days in August:
11.7 days - Average sunshine days in September:
12.6 days - Average sunshine days in October:
17.9 days - Average sunshine days in November:
18.6 days - Average sunshine days in December:
16.1 days
The month with the most sunshine days is May (19.4 days).
The month with the least sunshine days is July (7.9 days).
Average UV index
Karatsu, Japan
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Karatsu, Japan
The month with the most cloud cover is December (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility
Karatsu, Japan
The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).
