Climate and monthly weather forecastIwataki, Japan
Climate and monthly weather forecast
Weather in January
January, the same as December, in Iwataki, Japan, is a frosty winter month, with an average temperature fluctuating between 0.6°C (33.1°F) and 6°C (42.8°F). In Iwataki, January records the lowest average temperatures, peaking at 6°C (42.8°F) and reaching a low of 0.6°C (33.1°F). Weather in January »Weather in February
February, the last month of the winter in Iwataki, is also a frosty month, with an average temperature fluctuating between 6.9°C (44.4°F) and 0.7°C (33.3°F). Iwataki sees the arrival of February with an average high-temperature of a still frosty 6.9°C (44.4°F), indicating a subtle variation from January. Weather in February »Weather in March
March, the first month of the spring in Iwataki, is a cool month, with an average temperature ranging between max 10.8°C (51.4°F) and min 2.8°C (37°F). March introduces a marginal temperature uplift, with average high-temperatures adjusting from February's chilly 6.9°C (44.4°F) to a fresh 10.8°C (51.4°F). Weather in March »Weather in April
April is a refreshing spring month in Iwataki, Japan, with an average temperature ranging between max 15.8°C (60.4°F) and min 6.8°C (44.2°F). Iwataki in April experiences an increase in the average high-temperature, moving from March's cool 10.8°C (51.4°F) to a mild 15.8°C (60.4°F). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Iwataki, Japan, with an average temperature ranging between min 11.6°C (52.9°F) and max 21.5°C (70.7°F). May's arrival brings a temperature shift, moving from a mild 15.8°C (60.4°F) in April to an agreeable 21.5°C (70.7°F). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Iwataki, Japan, with an average temperature varying between 15.9°C (60.6°F) and 24.8°C (76.6°F). A gentle upsurge in temperatures occurs as May gives way to June, with average highs shifting from a pleasant 21.5°C (70.7°F) to a moderately hot 24.8°C (76.6°F). Weather in June »Weather in July
July, like June, in Iwataki, Japan, is a moderately hot summer month, with an average temperature varying between 28.7°C (83.7°F) and 21°C (69.8°F). Observing a minor shift, the average high-temperature during July adjusts from June's warm 24.8°C (76.6°F) to a still moderately hot 28.7°C (83.7°F). Weather in July »Weather in August
August, the last month of the summer in Iwataki, is a hot month, with an average temperature fluctuating between 22.1°C (71.8°F) and 30.3°C (86.5°F). August is the month when Iwataki sees the highest average temperatures, with a high of 30.3°C (86.5°F) and a low of 22.1°C (71.8°F). Throughout August, the heat index is evaluated at an extremely hot 40°C (104°F). Weather in August »Weather in September
September, the first month of the autumn in Iwataki, is also a moderately hot month, with temperature in the range of an average high of 25.4°C (77.7°F) and an average low of 18.2°C (64.8°F). Iwataki records a mild change in average high-temperature during September, easing from a tropical 30.3°C (86.5°F) in August to a moderately hot 25.4°C (77.7°F). Weather in September »Weather in October
October, like September, is an agreeable autumn month in Iwataki, Japan, with an average temperature varying between 20°C (68°F) and 12.9°C (55.2°F). Observing a mild shift, the average high-temperature during October reduces from September's moderately hot 25.4°C (77.7°F) to an agreeable 20°C (68°F). Weather in October »Weather in November
November, the last month of the autumn in Iwataki, is another refreshing month, with an average temperature varying between 7.6°C (45.7°F) and 14.5°C (58.1°F). The move into November indicates a reduction in the average high-temperature, down from October's agreeable 20°C (68°F) to a mild 14.5°C (58.1°F). Weather in November »Weather in December
December, the first month of the winter in Iwataki, is also a frosty month, with an average temperature fluctuating between 2.9°C (37.2°F) and 8.5°C (47.3°F). Onset of December comes with a temperature decline, the average high falling from a mild 14.5°C (58.1°F) in November to a frosty 8.5°C (47.3°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 Iwataki's coldest month, registering average high temperatures of 6°C (42.8°F) and lows of 0.6°C (33.1°F).
In Iwataki, during the entire year, the rain falls for 217.4 days and collects up to 1241mm (48.86") of precipitation.
January through March and December are months with snowfall.
The month with the most snowfall in Iwataki is January, when snow falls for 13.2 days and typically aggregates up to 204mm (8.03") of snow.
In Iwataki, during the entire year, snow falls for 33.6 days and aggregates up to 497mm (19.57") of snow.
The month with the least sunshine in Iwataki is January, with an average of 3.6h of sunshine.
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2.
The months with the lowest humidity in Iwataki, Japan, are April and May, with an average relative humidity of 77%.
April through November are months without snowfall in Iwataki, Japan.
The month with the longest days in Iwataki is June, with an average of 14h and 30min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index in Iwataki.
July is the most humid month in Iwataki, Japan, with an average relative humidity of 86%.
The month with the most rainfall in Iwataki, Japan, is July, when the rain falls for 23.3 days and typically aggregates up to 192mm (7.56") of precipitation.
The warmest time of the year in Iwataki is August, with temperatures averaging a high of 30.3°C (86.5°F) and a low of 22.1°C (71.8°F).
August has the most sunshine of the year in Iwataki, Japan, with an average of 10.2h of sunshine.
The month with the least rainfall is November, when the rain falls for 16.5 days and typically collects 55mm (2.17") of precipitation.
December has the shortest days of the year in Iwataki, Japan, with an average of 9h and 48min of daylight.
Iwataki, Japan, does not utilize Daylight Saving Time (DST). JST timezone is used over the entire year.
Average temperature
Iwataki, Japan
The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (6°C).
The month with the highest average low temperature is August (22.1°C).
The coldest month (with the lowest average low temperature) is January (0.6°C).
Average pressure
Iwataki, Japan
- Average pressure in January:
1019.8mbar - Average pressure in February:
1020.1mbar - Average pressure in March:
1017.8mbar - Average pressure in April:
1015.1mbar - Average pressure in May:
1012.2mbar - Average pressure in June:
1008.7mbar
- Average pressure in July:
1009mbar - Average pressure in August:
1009.4mbar - Average pressure in September:
1012.9mbar - Average pressure in October:
1017.2mbar - Average pressure in November:
1019.8mbar - Average pressure in December:
1019.4mbar
The month with the highest atmospheric pressure is February (1020.1mbar).
The month with the lowest atmospheric pressure is June (1008.7mbar).
Average wind speed
Iwataki, Japan
- Average wind speed in January:
11.4km/h - Average wind speed in February:
10.9km/h - Average wind speed in March:
10.9km/h - Average wind speed in April:
9.6km/h - Average wind speed in May:
8.3km/h - Average wind speed in June:
7km/h
- Average wind speed in July:
7.2km/h - Average wind speed in August:
7km/h - Average wind speed in September:
8km/h - Average wind speed in October:
9.1km/h - Average wind speed in November:
9.2km/h - Average wind speed in December:
11.1km/h
The windiest month (with the highest average wind speed) is January (11.4km/h).
The calmest months (with the lowest average wind speed) are June and August (7km/h).
Average humidity
Iwataki, Japan
The month with the highest relative humidity is July (86%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall
Iwataki, Japan
- Average rainfall in January:
73mm - Average rainfall in February:
66mm - Average rainfall in March:
88mm - Average rainfall in April:
109mm - Average rainfall in May:
92mm - Average rainfall in June:
121mm
The wettest month (with the highest rainfall) is July (192mm).
The driest month (with the least rainfall) is November (55mm).
Average rainfall days
Iwataki, Japan
- Average rainfall days in January:
18.5 days - Average rainfall days in February:
16.8 days - Average rainfall days in March:
19.3 days - Average rainfall days in April:
16.8 days - Average rainfall days in May:
15 days - Average rainfall days in June:
19.1 days
- Average rainfall days in July:
23.3 days - Average rainfall days in August:
20.4 days - Average rainfall days in September:
16.6 days - Average rainfall days in October:
15.2 days - Average rainfall days in November:
16.5 days - Average rainfall days in December:
19.9 days
The month with the highest number of rainy days is July (23.3 days).
The month with the least rainy days is May (15 days).
Average snowfall
Iwataki, Japan
The month with the highest snowfall is January (204mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days
Iwataki, Japan
- Average snowfall days in January:
13.2 days - Average snowfall days in February:
10.9 days - Average snowfall days in March:
3.8 days - Average snowfall days in April:
0.1 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:
5.6 days
The month with the highest number of snowfall days is January (13.2 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Iwataki, 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:
3h and 36min - Average sunshine in February:
3h and 42min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 36min - Average sunshine in May:
9h and 18min - Average sunshine in June:
8h and 48min
- Average sunshine in July:
8h and 42min - Average sunshine in August:
10h and 12min - Average sunshine in September:
8h and 24min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Iwataki, Japan
- Average sunshine days in January:
3.8 days - Average sunshine days in February:
5.8 days - Average sunshine days in March:
8.3 days - Average sunshine days in April:
11.4 days - Average sunshine days in May:
14.3 days - Average sunshine days in June:
9.2 days
- Average sunshine days in July:
5.3 days - Average sunshine days in August:
8.8 days - Average sunshine days in September:
10.7 days - Average sunshine days in October:
12.5 days - Average sunshine days in November:
10.1 days - Average sunshine days in December:
6.5 days
The month with the most sunshine days is May (14.3 days).
The month with the least sunshine days is January (3.8 days).
Average UV index
Iwataki, Japan
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
Iwataki, Japan
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility
Iwataki, Japan
The months with the highest visibility are January, February, March, April, May, October, November and December (9km).
The month with the lowest visibility is July (7km).
