Climate and monthly weather forecastChiba, Japan
Chiba, Japan - Climate and weather forecast by month. Detailed climate information with charts - average monthly weather with temperature, pressure, humidity, precipitation, wind, daylight, sunshine, visibility, and UV index data. The month with the least rainfall in Chiba, Japan, is January, when the rain falls for 7.2 days and typically collects 41mm (1.61") of precipitation. The month with the most snowfall in Chiba, Japan, is February, when snow falls for 1.3 days and typically aggregates up to 26mm (1.02") of snow.
Climate and monthly weather forecast
The climate of Chiba
Chiba, Japan, possesses a Cfa climate under the Köppen climate classification or, in more familiar terms, a humid subtropical climate without a dry season. This particular setting mainly influences the varied temperature and rainfall patterns throughout the twelve months of the year.The differences in temperature from month to month are more noticeable for the highs, ranging from 9.3°C (48.7°F) in January to 29.8°C (85.6°F) in August. Those seeking cooler conditions would find satisfaction within the lows, fluctuating slightly from 3.8°C (38.8°F) in January to 24.8°C (76.6°F) in August. However, relative humidity levels remain elevated consistently in the year, with a high in July at 82% and a low in January of 62%. These undoubtedly contribute to the subtropical description given to Chiba’s climate.
Rainfall in Chiba is scattered unevenly during the year, presenting diverse monthly intensities from 41mm (1.61") in January to a peak value of 124mm (4.88") in October. A similar pattern is discernible with the rainfall days; January experiences about seven days of rainfall, swelling to nearly 18 days by June. There is hardly any snow in this region, with only minor snowfall of 2mm (0.08") in February.
Chiba's weather also features its share of sunlight and sea temperatures. Sunshine hours vary from 5.3 to 10.2 hours per day, with August soaking in the maximum sunlight. Seawater temperature offers a cooling sensation all year round, with values from 14.4°C (57.9°F) in February to 25.3°C (77.5°F) in August.
The best time to visit Chiba
For those seeking the perfect time to visit this beautiful coastal city of Chiba, the ideal period would be from late spring to early summer, between May to July. This timeframe presents comfortable temperatures with highs oscillating between 21.8°C (71.2°F) to 28°C (82.4°F) and lows from 16.3°C (61.3°F) to 23.1°C (73.6°F). Furthermore, these months harbor longer daylight ranging from 14 hours to 14.5 hours and promising sunshine hours from 8.3 to 9.1 hours. The beach lovers would be glad to know that the sea temperatures during this period vary from 18.4°C (65.1°F) to 23.8°C (74.8°F), ideal for various water activities.The worst time to visit Chiba
Visitors might want to reconsider scheduling their trip to Chiba from September to October. In these months, the city records the highest rainfall, ranging from 117mm (4.61") to 124mm (4.88"), and the number of rainfall days increase to approximately 16, threatening to dampen any outdoor plans. October also records a dip in relative sunshine hours and daylight, making it less ideal for sightseeing.Spring weather in Chiba
Spring in Chiba starts from March and extends until May. During this season, the city begins to shake off the winter chill with temperature highs gradually increasing from 12.9°C (55.2°F) to 21.8°C (71.2°F) and lows from 7.1°C (44.8°F) to 16.3°C (61.3°F). Rainfall also sees a significant rise during this period, with April and May recording up to 77mm (3.03") and 73mm (2.87") of precipitation respectively. In contrast, the incipient spring showcases minimal snowfall.Summer weather in Chiba
Summer weather in Chiba, from June through August, features high temperatures between 24°C (75.2°F) to 29.8°C (85.6°F) matched with lows between 19.4°C (66.9°F) to 24.8°C (76.6°F). The sea temperatures are at their prime, reaching up to 25.3°C (77.5°F), offering relief from the summer heat. However, do note that summer is also the season with the highest relative humidity, rising to a peak of 82% in July.Autumn weather in Chiba
September ushers in the autumn season in Chiba, concluding by late November. The city experiences a gradual drop in temperature highs from 26.4°C (79.5°F) to 16.7°C (62.1°F) and lows between 21.8°C (71.2°F) to 11.9°C (53.4°F). Rainfall intensifies, recording the highest values of 117mm (4.61") in September and 124mm (4.88") in October. The number of rainfall days also increases, restricting outdoor activities.Winter weather in Chiba
Winter in Chiba commences in December, eventually thawing out by February. These chilling months reveal lower temperatures, with highs hovering from 11.7°C (53.1°F) to 9.3°C (48.7°F), and the lows moving between 6.6°C (43.9°F) to 3.8°C (38.8°F). During this phase, the city records the least rainfall, with values descending to a mere 43mm (1.69") in December. One can also witness minor snowfall in February, creating a beautiful wintry landscape.Weather in January
The Chiba weather in January is characterized by lower temperatures and humidity levels. The average high temperature reaches 9.3°C (48.7°F) and nighttime lows dip to 3.8°C (38.8°F). The month experiences 7.2 days of rainfall with 41mm (1.61") precipitation, while the relative humidity averages 62%. Weather in January »Weather in February
As Chiba welcomes February, there's a slight increase in overall temperature with the peak temperature rising to 9.8°C (49.6°F). The contrast with January is most noticeable in snowfall - where January had minimal snow at 2mm (0.08"), snowfall peaks in February at 26mm (1.02"). Weather in February »Weather in March
The transitional period from winter to spring is felt throughout March in Chiba. With the high temperature rising to 12.9°C (55.2°F), it's warmer than February but still retains the chill of winter. Rainfall intensifies this month, with total precipitation reaching 74mm (2.91") marking it distinctly wetter than its predecessor months. Weather in March »Weather in April
The pleasant weather in April signals the full arrival of spring in Chiba. Distinct from the previous months, the high temperature jumps to a comfortable 17.2°C (63°F). The increase in temperature coincides with a relief from heavy rainfall - while it's still expected for 14.3 days of the month, the quantity drops slightly to 77mm (3.03"). Weather in April »Weather in May
Chiba starts to warm up significantly in May with the high temperature increasing to 21.8°C (71.2°F). More precipitation is observed this month, with rainfall amounting to 73mm (2.87") over 12.7 days of the month. The month bid farewell to the relatively moderate humidity of spring as the average relative humidity rises to 74%. Weather in May »Weather in June
June marks the onset of summer in Chiba, introducing sweltering conditions with high temperatures reaching up to 24°C (75.2°F). As the city basks in the summer sun, rainfall becomes more frequent, with 103mm (4.06") falling over 17.8 days. Weather in June »Weather in July
July is the height of summer in Chiba, marked by the highest temperatures of the year reaching 28°C (82.4°F). Apart from the intense heat, Chiba residents also experience a humidity level of 82%, the highest average humidity of the year. Weather in July »Weather in August
August experiences a climax in both temperature and heat, with maximum temperatures spiking at 29.8°C (85.6°F). Surprisingly, despite the high temperature, the month experiences a decrease in average humidity, dropping to 79% compared to the previous month. Weather in August »Weather in September
Coming to September, Chiba experiences a reprieve from the summer heat as temperatures drop to a more manageable 26.4°C (79.5°F). Rainfall dramatically increases, registering at 117mm (4.61") over 16.3 days, the highest amount since June. Weather in September »Weather in October
In October, Chiba witnesses a significant temperature drop with the high only reaching 21.5°C (70.7°F). The city Sanas a noticeable shift in weather patterns: rainfall increases to a peak of 124mm (4.88") over 15.9 days, the highest for the year. Weather in October »Weather in November
The transformation of Chiba’s climate continues in November, the high temperature decreases to a cool 16.7°C (62.1°F). Rainfall and humidity drop off, 67mm (2.64") of precipitation is spread over 12.5 days, and the average humidity is 71%. Weather in November »Weather in December
December brims with a wintery chill as Chiba shifts to the coldest month of the year. The temperatures significantly drop with highs averaging 11.7°C (53.1°F) and nighttime lows sinking to 6.6°C (43.9°F). Rainfall also takes a dip, recording 43mm (1.69") over 9.4 days, making it the driest month of the year. 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
Chiba's coldest weather arrives in January, when temperatures average a high of 9.3°C (48.7°F) and a low of 3.8°C (38.8°F).
January is the least humid month in Chiba, with an average relative humidity of 62%.
The month with the least rainfall in Chiba, Japan, is January, when the rain falls for 7.2 days and typically collects 41mm (1.61") of precipitation.
In Chiba, during the entire year, the rain falls for 162.9 days and collects up to 921mm (36.26") of precipitation.
January and February are months with snowfall.
In Chiba, during the entire year, snow falls for 1.9 days and aggregates up to 28mm (1.1") of snow.
January through March, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
The month with the most snowfall in Chiba, Japan, is February, when snow falls for 1.3 days and typically aggregates up to 26mm (1.02") of snow.
February is the month with the coldest seawater in Chiba, with an average sea temperature of 14.4°C (57.9°F).
The month with the least sunshine is February, with an average of 5.3h of sunshine.
In Chiba, snow does not fall in March through December.
With an average of 14h and 30min of daylight, June has the longest days of the year.
With an average relative humidity of 82%, July is the most humid month in Chiba.
July is the month with the highest UV index in Chiba, Japan, with an average maximum UV index of 7.
August is the month when Chiba, Japan, experiences its warmest temperatures, averaging a high of 29.8°C (85.6°F) and a low of 24.8°C (76.6°F).
August is the month with the warmest seawater, with an average sea temperature of 25.3°C (77.5°F).
With an average of 10.2h of sunshine, August has the most sunshine of the year.
October is the month with the most rainfall in Chiba, Japan. Rain falls for 15.9 days and accumulates 124mm (4.88") of precipitation.
The month with the shortest days is December, with an average of 9h and 48min of daylight.
Chiba, Japan, does not observe Daylight Saving Time (DST). JST timezone is used throughout the entire year.
Average temperature
Chiba, 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 (9.3°C).
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).
Average pressure
Chiba, Japan
- Average pressure in January:
1015.9mbar - Average pressure in February:
1016.9mbar - Average pressure in March:
1015.3mbar - Average pressure in April:
1014.2mbar - Average pressure in May:
1011.9mbar - Average pressure in June:
1009.2mbar
- Average pressure in July:
1009.7mbar - Average pressure in August:
1010.1mbar - Average pressure in September:
1013.4mbar - Average pressure in October:
1016.4mbar - Average pressure in November:
1017.9mbar - Average pressure in December:
1016mbar
The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed
Chiba, Japan
- Average wind speed in January:
16.4km/h - Average wind speed in February:
17.3km/h - Average wind speed in March:
17.4km/h - Average wind speed in April:
17.3km/h - Average wind speed in May:
15.4km/h - Average wind speed in June:
13.4km/h
- Average wind speed in July:
14.9km/h - Average wind speed in August:
14km/h - Average wind speed in September:
14km/h - Average wind speed in October:
15.3km/h - Average wind speed in November:
14km/h - Average wind speed in December:
15.4km/h
The windiest month (with the highest average wind speed) is March (17.4km/h).
The calmest month (with the lowest average wind speed) is June (13.4km/h).
Average humidity
Chiba, Japan
The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is January (62%).
Average rainfall
Chiba, Japan
The wettest month (with the highest rainfall) is October (124mm).
The driest month (with the least rainfall) is January (41mm).
Average rainfall days
Chiba, Japan
- Average rainfall days in January:
7.2 days - Average rainfall days in February:
10.6 days - Average rainfall days in March:
15 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
16.2 days - Average rainfall days in August:
15 days - Average rainfall days in September:
16.3 days - Average rainfall days in October:
15.9 days - Average rainfall days in November:
12.5 days - Average rainfall days in December:
9.4 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is January (7.2 days).
Average snowfall
Chiba, Japan
The month with the highest snowfall is February (26mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days
Chiba, Japan
- Average snowfall days in January:
0.6 days - Average snowfall days in February:
1.3 days - Average snowfall days in March:
0 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 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average sea temperature
Chiba, Japan
The best month for swimming (with the highest average sea temperature) is August (25.3°C).
The coldest month (with the lowest average sea temperature) is February (14.4°C).
Average daylight / Average sunshine
Chiba, 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 6min - Average sunshine in February:
5h and 18min - Average sunshine in March:
6h and 18min - Average sunshine in April:
8h and 30min - Average sunshine in May:
9h and 6min - Average sunshine in June:
8h and 18min
- Average sunshine in July:
9h and 6min - Average sunshine in August:
10h and 12min - Average sunshine in September:
7h and 36min - Average sunshine in October:
6h and 24min - Average sunshine in November:
5h and 36min - Average sunshine in December:
5h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days
Chiba, Japan
- Average sunshine days in January:
22.8 days - Average sunshine days in February:
16 days - Average sunshine days in March:
14.4 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
16.2 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
13 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
10.9 days - Average sunshine days in October:
12.7 days - Average sunshine days in November:
16.1 days - Average sunshine days in December:
20.4 days
The month with the most sunshine days is January (22.8 days).
The month with the least sunshine days is June (10.3 days).
Average UV index
Chiba, 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
Chiba, Japan
The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is January (Cloud cover 32).
Average visibility
Chiba, Japan
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
