Climate and monthly weather forecastHeiwajima, Japan
Climate and monthly weather forecast
Weather in January
January, like December, is another chilly winter month in Heiwajima, Japan, with an average temperature ranging between min 3.4°C (38.1°F) and max 8.9°C (48°F). Heiwajima's January weather, with an average high temperature of 8.9°C (48°F) and an average low temperature of 3.4°C (38.1°F), tends to be the coldest of the year. Weather in January »Weather in February
The last month of the winter, February, is also a frosty month in Heiwajima, Japan, with an average temperature fluctuating between 4.1°C (39.4°F) and 9.8°C (49.6°F). With the start of February, Heiwajima measures an average high-temperature of a still frosty 9.8°C (49.6°F), not significantly differing from January's 8.9°C (48°F). Weather in February »Weather in March
The first month of the spring, March, is a fresh month in Heiwajima, Japan, with an average temperature fluctuating between 12.8°C (55°F) and 6.7°C (44.1°F). The transition from February to March brings a subtle temperature rise, with average high-temperatures increasing from a frosty 9.8°C (49.6°F) to a fresh 12.8°C (55°F). Weather in March »Weather in April
April is a refreshing spring month in Heiwajima, Japan, with an average temperature varying between 17.2°C (63°F) and 10.8°C (51.4°F). In Heiwajima, the average high-temperature in April slightly rises, from a cool 12.8°C (55°F) in March, to a comfortable 17.2°C (63°F). Weather in April »Weather in May
May, the last month of the spring in Heiwajima, is a pleasant month, with an average temperature ranging between max 21.9°C (71.4°F) and min 16.2°C (61.2°F). With the onset of May, Heiwajima's average high-temperature sees a modest rise, moving from April's enjoyable 17.2°C (63°F) to an agreeable 21.9°C (71.4°F). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Heiwajima, Japan, with temperature in the range of an average high of 24.3°C (75.7°F) and an average low of 19.2°C (66.6°F). The dawn of June sees an average high-temperature of a moderately hot 24.3°C (75.7°F), subtly contrasting with May's 21.9°C (71.4°F). Weather in June »Weather in July
July, the same as June, is another warm summer month in Heiwajima, Japan, with an average temperature fluctuating between 28.3°C (82.9°F) and 23.3°C (73.9°F). Observing a minor shift, the average high-temperature during July adjusts from June's warm 24.3°C (75.7°F) to a still moderately hot 28.3°C (82.9°F). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Heiwajima, Japan, with an average temperature fluctuating between 24.9°C (76.8°F) and 29.8°C (85.6°F). Heiwajima's warmest month, August, registers temperatures that range from a high of 29.8°C (85.6°F) to a low of 24.9°C (76.8°F). The heat index value during August is calculated to be a very hot 36°C (96.8°F). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Heiwajima, Japan, with temperature in the range of an average high of 26.5°C (79.7°F) and an average low of 21.6°C (70.9°F). As August transitions into September, Heiwajima sees a gentle drop in the average high-temperature, transitioning from a moderately hot 29.8°C (85.6°F) to a still warm 26.5°C (79.7°F). Weather in September »Weather in October
October, like September, is another pleasant autumn month in Heiwajima, Japan, with an average temperature fluctuating between 21.5°C (70.7°F) and 16.8°C (62.2°F). The transition into October involves a decrease in the average high-temperature, falling from a moderately hot 26.5°C (79.7°F) in September to an agreeable 21.5°C (70.7°F). Weather in October »Weather in November
November, the last month of the autumn in Heiwajima, is also an enjoyable month, with an average temperature varying between 11.5°C (52.7°F) and 16.5°C (61.7°F). As October transitions to November, the average high-temperature falls from a pleasant 21.5°C (70.7°F) to a refreshing 16.5°C (61.7°F). Weather in November »Weather in December
December, the first month of the winter in Heiwajima, is still a cool month, with temperature in the range of an average low of 6.4°C (43.5°F) and an average high of 11.5°C (52.7°F). December brings a decrease in the average high-temperature, shifting from a comfortable 16.5°C (61.7°F) in November to a cool 11.5°C (52.7°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
January is the coldest month of the year, registering average temperatures as high as 8.9°C (48°F) and as low as 3.4°C (38.1°F).
The least humid month is January, with an average relative humidity of 61%.
In Heiwajima, during the entire year, the rain falls for 154.1 days and collects up to 754mm (29.69") of precipitation.
January through March are months with snowfall in Heiwajima.
In Heiwajima, during the entire year, snow falls for 3.5 days and aggregates up to 41mm (1.61") of snow.
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 3.
The month with the most snowfall is February, when snow falls for 2 days and typically aggregates up to 37mm (1.46") of snow.
The month with the least sunshine in Heiwajima, Japan, is February, with an average of 5.5h of sunshine.
In Heiwajima, Japan, snow does not fall in April through December.
June has the longest days of the year in Heiwajima, with an average of 14h and 30min of daylight.
The most humid month in Heiwajima, Japan, is July, with an average relative humidity of 80%.
July is the month with the highest UV index in Heiwajima, with an average maximum UV index of 7.
The month of August, characterized by an average high of 29.8°C (85.6°F) and a low of 24.9°C (76.8°F), is recognized as the warmest.
With an average of 10.3h of sunshine, August has the most sunshine of the year in Heiwajima.
October is the month with the most rainfall. Rain falls for 15.3 days and accumulates 100mm (3.94") of precipitation.
The month with the least rainfall in Heiwajima, Japan, is December, when the rain falls for 9.1 days and typically collects 36mm (1.42") of precipitation.
With an average of 9h and 48min of daylight, December has the shortest days of the year in Heiwajima, Japan.
Heiwajima does not observe Daylight Saving Time (DST). JST timezone is used throughout the entire year.
Average temperature
Heiwajima, Japan
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (8.9°C).
The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (3.4°C).
Average pressure
Heiwajima, Japan
- Average pressure in January:
1016.1mbar - Average pressure in February:
1017mbar - Average pressure in March:
1015.4mbar - Average pressure in April:
1014.2mbar - Average pressure in May:
1011.9mbar - Average pressure in June:
1009.2mbar
- Average pressure in July:
1009.8mbar - Average pressure in August:
1010.2mbar - Average pressure in September:
1013.4mbar - Average pressure in October:
1016.5mbar - Average pressure in November:
1018mbar - Average pressure in December:
1016.2mbar
The month with the highest atmospheric pressure is November (1018mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed
Heiwajima, Japan
- Average wind speed in January:
15.8km/h - Average wind speed in February:
16.8km/h - Average wind speed in March:
17.1km/h - Average wind speed in April:
17.3km/h - Average wind speed in May:
15.6km/h - Average wind speed in June:
13.6km/h
- Average wind speed in July:
15km/h - Average wind speed in August:
14.2km/h - Average wind speed in September:
13.9km/h - Average wind speed in October:
15.4km/h - Average wind speed in November:
14km/h - Average wind speed in December:
15km/h
The windiest month (with the highest average wind speed) is April (17.3km/h).
The calmest month (with the lowest average wind speed) is June (13.6km/h).
Average humidity
Heiwajima, Japan
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is January (61%).
Average rainfall
Heiwajima, Japan
The wettest month (with the highest rainfall) is October (100mm).
The driest month (with the least rainfall) is December (36mm).
Average rainfall days
Heiwajima, Japan
- Average rainfall days in January:
7.5 days - Average rainfall days in February:
10.4 days - Average rainfall days in March:
15.2 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
12.8 days - Average rainfall days in June:
16 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
14 days - Average rainfall days in October:
15.3 days - Average rainfall days in November:
11.9 days - Average rainfall days in December:
9.1 days
The month with the highest number of rainy days is June (16 days).
The month with the least rainy days is January (7.5 days).
Average snowfall
Heiwajima, Japan
The month with the highest snowfall is February (37mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days
Heiwajima, Japan
- Average snowfall days in January:
1.1 days - Average snowfall days in February:
2 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:
0.2 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Heiwajima, 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 12min - Average sunshine in February:
5h and 30min - Average sunshine in March:
6h and 36min - Average sunshine in April:
8h and 36min - Average sunshine in May:
9h and 12min - Average sunshine in June:
8h and 36min
- Average sunshine in July:
9h and 30min - Average sunshine in August:
10h and 18min - Average sunshine in September:
7h and 54min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 54min - Average sunshine in December:
6h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days
Heiwajima, Japan
- Average sunshine days in January:
20.9 days - Average sunshine days in February:
14.9 days - Average sunshine days in March:
13.2 days - Average sunshine days in April:
14.1 days - Average sunshine days in May:
16.3 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
14.1 days - Average sunshine days in August:
15.9 days - Average sunshine days in September:
13.6 days - Average sunshine days in October:
13 days - Average sunshine days in November:
16.4 days - Average sunshine days in December:
20.2 days
The month with the most sunshine days is January (20.9 days).
The month with the least sunshine days is June (12.3 days).
Average UV index
Heiwajima, Japan
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover
Heiwajima, Japan
The months with the most cloud cover are June and October (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 31).
Average visibility
Heiwajima, 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).
