Climate and monthly weather forecastSaitama, Japan
Climate and monthly weather forecast
The climate of Saitama
Saitama, Japan is characterized by a Köppen climate classification of Cfa, indicating a humid subtropical climate. Without a dry season, this city experiences weather conditions that reflect its geographical location in the northern temperate climate zone. The annual weather patterns in Saitama showcase a diverse range of temperatures, rainfall and humidity, creating an intriguing blend of climate attributes.The annual temperatures in Saitama fluctuate from 2°C (35.6°F) to 31.9°C (89.4°F), showcasing the extensive range of climatic conditions. The coldest month is February with average minimum temperatures of 2°C (35.6°F), while August registers the highest average maximum temperatures of 31.9°C (89.4°F). Saitama receives a fair share of rainfall throughout the year, ranging from 19mm (0.75") in December to 79mm (3.11") in October. Accordingly, rainfall days vary from 4.1 days in January to 15.7 days in June.
Humidity level also varies significantly, ranging from 59% in January to a peak of 75% in July. Sunshine hours, however, peak at 14.6 hours in June, diminishing to 9.8 hours by December. The UV index is quite intense during July with a rating of 7 but dips to 2 in January and February. The city's average wind speed fluctuates from 9.7km/h (6mph) in November to 12.6km/h (7.8mph) in April.
A unique feature of Saitama's climate is the light snowfall experienced in the colder months, from 8mm (0.31") in January to 4mm (0.16") in November, although actual snowfall days are few and quite minimal.
The best time to visit Saitama
The best time to visit Saitama would be during the transition seasons of Spring and Autumn. During these periods, the city offers pleasant climate conditions with moderate temperature variations and lower humidity levels. In Spring, between March and May, the city experiences average maximum and minimum temperatures between 13.3°C (55.9°F) to 23.7°C (74.7°F) and 5.4°C (41.7°F) to 15.8°C (60.4°F) respectively, making it an enjoyable time for tourists. Autumn months from September to November also present amicable weather conditions with average temperatures ranging between 16.2°C (61.2°F) to 27.5°C (81.5°F) maximally, and 10°C (50°F) to 20.9°C (69.6°F) minimally.The worst time to visit Saitama
The least favorable time to explore Saitama would be during the cold winter months, specifically January and February, and the hot, humid summer months of July and August. During winter, temperature drops significantly to a low of 2°C (35.6°F), coupled with occasional snowfall and lower daylight hours, making it less ideal for tourism. Similarly, the summer months feature high temperatures up to 31.9°C (89.4°F) with high humidity levels of up to 75% in July, making outdoor activities quite uncomfortable.Spring weather in Saitama
Spring is a pleasant season in Saitama, often marked with moderate temperatures and blooming flora. The temperatures during this season range from 5.4°C (41.7°F) to 23.7°C (74.7°F). The spring season is relatively wet with an expected rainfall of up to 50mm (1.97") in April. Additionally, the proportion of sunshine hours gradually increases from 12 hours in March to 14.1 hours in May accompanied by an average wind speed of 12.3km/h (7.6mph) to 11.4km/h (7.1mph).Summer weather in Saitama
Summers in Saitama are characterized by hot temperatures, high humidity and increased rainfall. The temperature during this season reaches up to 31.9°C (89.4°F) but never falls below 19.3°C (66.7°F). Rainfall is highest in June with 73mm (2.87"), whereas the relative humidity peaks at 75% in July. Despite this, the summer in Saitama sees the longest daylight hours, with an impressive 14.6 hours in June.Autumn weather in Saitama
Autumn in Saitama displays a decrease in temperature and rainfall. The temperature in this season ranges between 10°C (50°F) and 27.5°C (81.5°F), while the rainfall dips to as low as 36mm (1.42") in November. Despite the decrease in daylight hours from 12.4 to 10.3 hours, autumn remains comfortable with relatively lower humidity levels.Winter weather in Saitama
Winter in Saitama brings around the coldest temperatures, falling as low as 2°C (35.6°F), while the highest temperature hardly surpasses 10.6°C (51.1°F). Rainfall and humidity are lowest during this season with a minimum of 19mm (0.75") of rainfall in December and relative humidity of 59% in January. Despite the cold, winter days still hold up to 9.8 hours of daylight in December. Wind speeds also tend to increase during winter, reaching up to 12km/h (7.5mph) in December.Weather in January
In January, Saitama, Japan embraces a chilly start to the year. As temperatures range from a low of 2°C (35.6°F) to a high of 8.5°C (47.3°F), locals prefer warm clothing to shield themselves from the prevailing conditions. Snowfall is probable, resulting in a glistening white blanket on the city streets. Weather in January »Weather in February
Despite the climb to a high temperature of 9.5°C (49.1°F), February continues to carry the winter feel of January. As sunshine duration borderlines on February's previous month, the streets of Saitama shine bright under the winter sun. Weather in February »Weather in March
Transformation brightens Saitama's landscape as March unfolds. A boost in temperature perceives the first signs of spring and reduces snowfall. March contrasts distinctly against its precursor, with an increase in both daylight and sunshine hours. Weather in March »Weather in April
April's weather experiences considerable enhancement, with temperatures settling between the 10°C (50°F) to 17.8°C (64°F) range. As snowfall becomes a remnant of the past winter, rainfall seizes control, rendering April as a relatively wet month. Weather in April »Weather in May
In May, comfort walks through Saitama's door with temperatures ranging from 15.8°C (60.4°F) to 23.7°C (74.7°F). Amid the progressing rise in temperatures, city dwellers witness a continuation of the surge in rainfall witnessed in April. Weather in May »Weather in June
As the temperature reading ascends to a high of 25.9°C (78.6°F) in June, Saitama welcomes the early signs of summer. Concurrently, there is an increase in rainfall, marking the month with the highest level of precipitation. The skies remain comparatively cloudy, perhaps hinting at June being the onset of the rainy season. Weather in June »Weather in July
July marks the heart of summer in Saitama, with the mercury hitting a high of 30.3°C (86.5°F). This month showcases the highest UV index levels due to long sunshine hours that rival the amount of daylight. Therefore, July is the time for some fun in the sun, with the city experiencing maximum warmth. Weather in July »Weather in August
Saitama’s sultry summer continues into August, with temperatures reaching a blistering 31.9°C (89.4°F). Concurrently, the frequency of rainy days begins to diminish, signaling an eventual close to the summer monsoon. Despite a decline in rainfall, humidity levels remain raised, and city dwellers find reprieve in the slightly longer sunshine hours. Weather in August »Weather in September
September sparks a mood change in Saitama's weather as temperatures scale back to a high of 27.5°C (81.5°F). This month dispenses partial relief from the summer heat, paving the transition into fall. Although the frequency of rain gradually ascends, it marks the beginning of a cooler and drier period. Weather in September »Weather in October
Temperatures in October further dip, reaching a scaled back high of 21.6°C (70.9°F). While maintaining a moderate level of rainfall, this month also exhibits a considerable drop in relative humidity. The disappearance of summer's heatwaves signals the further approach of winter’s chill. Weather in October »Weather in November
November witnesses the dip in Saitama's thermometer intensify, with temperatures fluctuating from 10°C (50°F) to 16.2°C (61.2°F). A drastic reduction in rainfall, as evident from the 36mm (1.42") precipitation rate, confirm the advent of the cold season. Weather in November »Weather in December
Winter engulfs Saitama in December as minimum temperatures drop to 4.8°C (40.6°F). A remarkable decline in rainfall and a boost in visibility define the atmospheric characteristics. Although snowfall is minimal, early winter scenes unfurl across the city with occasional white highlights. 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
Saitama's coldest weather arrives in January, when temperatures average a high of 8.5°C (47.3°F) and a low of 2°C (35.6°F).
The least humid month in Saitama, Japan, is January, with an average relative humidity of 59%.
In Saitama, during the entire year, the rain falls for 138 days and collects up to 580mm (22.83") of precipitation.
January through March and November are months with snowfall in Saitama, Japan.
Throughout the year, there are 2.8 snowfall days, and 47mm (1.85") of snow is accumulated.
The month with the lowest UV index in Saitama, Japan, is January, with an average maximum UV index of 2.
The month with the most snowfall is February, when snow falls for 1.8 days and typically aggregates up to 33mm (1.3") of snow.
February has the least sunshine of the year in Saitama, with an average of 6h of sunshine.
In Saitama, Japan, snow does not fall in April through October and December.
The month with the longest days is June, with an average of 14h and 36min of daylight.
With an average relative humidity of 75%, July is the most humid month.
July is the month with the highest UV index in Saitama, with an average maximum UV index of 7.
The warmest period is August, when temperatures fluctuate between an average high of 31.9°C (89.4°F) and a low of 24.9°C (76.8°F).
With an average of 10.1h of sunshine, August has the most sunshine of the year.
The month with the most rainfall in Saitama is October, when the rain falls for 14.5 days and typically aggregates up to 79mm (3.11") of precipitation.
The month with the least rainfall in Saitama, Japan, is December, when the rain falls for 6.2 days and typically collects 19mm (0.75") of precipitation.
The month with the shortest days in Saitama, Japan, is December, with an average of 9h and 48min of daylight.
Saitama, Japan, does not utilize Daylight Saving Time (DST). JST timezone is used over the entire year.
Average temperature
Saitama, Japan
The warmest month (with the highest average high temperature) is August (31.9°C).
The month with the lowest average high temperature is January (8.5°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 (2°C).
Average pressure
Saitama, Japan
- Average pressure in January:
1016.4mbar - Average pressure in February:
1017.3mbar - Average pressure in March:
1015.6mbar - Average pressure in April:
1014.3mbar - Average pressure in May:
1012mbar - Average pressure in June:
1009.2mbar
- Average pressure in July:
1009.8mbar - Average pressure in August:
1010.3mbar - Average pressure in September:
1013.6mbar - Average pressure in October:
1016.8mbar - Average pressure in November:
1018.2mbar - Average pressure in December:
1016.4mbar
The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed
Saitama, Japan
- Average wind speed in January:
11.8km/h - Average wind speed in February:
12.1km/h - Average wind speed in March:
12.3km/h - Average wind speed in April:
12.6km/h - Average wind speed in May:
11.4km/h - Average wind speed in June:
10.3km/h
- Average wind speed in July:
10.2km/h - Average wind speed in August:
10.1km/h - Average wind speed in September:
10km/h - Average wind speed in October:
11km/h - Average wind speed in November:
9.7km/h - Average wind speed in December:
11km/h
The windiest month (with the highest average wind speed) is April (12.6km/h).
The calmest month (with the lowest average wind speed) is November (9.7km/h).
Average humidity
Saitama, Japan
The month with the highest relative humidity is July (75%).
The month with the lowest relative humidity is January (59%).
Average rainfall
Saitama, Japan
The wettest month (with the highest rainfall) is October (79mm).
The driest month (with the least rainfall) is December (19mm).
Average rainfall days
Saitama, Japan
- Average rainfall days in January:
4.1 days - Average rainfall days in February:
7.1 days - Average rainfall days in March:
12.4 days - Average rainfall days in April:
13 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
15.7 days
- Average rainfall days in July:
14.9 days - Average rainfall days in August:
14.2 days - Average rainfall days in September:
14 days - Average rainfall days in October:
14.5 days - Average rainfall days in November:
9.2 days - Average rainfall days in December:
6.2 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is January (4.1 days).
Average snowfall
Saitama, Japan
The month with the highest snowfall is February (33mm).
The months with the least snowfall are April, May, June, July, August, September, October and December (0mm).
Average snowfall days
Saitama, Japan
- Average snowfall days in January:
0.6 days - Average snowfall days in February:
1.8 days - Average snowfall days in March:
0.3 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:
0.1 days - Average snowfall days in December:
0 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).
Average daylight / Average sunshine
Saitama, Japan
- Average daylight in January:
10h and 0min - 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 6min - Average daylight in June:
14h and 36min
- 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 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
6h and 42min - Average sunshine in February:
6h and 0min - Average sunshine in March:
7h and 0min - Average sunshine in April:
9h and 6min - Average sunshine in May:
9h and 30min - Average sunshine in June:
8h and 42min
- Average sunshine in July:
9h and 18min - Average sunshine in August:
10h and 6min - Average sunshine in September:
7h and 48min - Average sunshine in October:
6h and 42min - Average sunshine in November:
6h and 6min - Average sunshine in December:
6h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 6h and 0min).
Average sunshine days
Saitama, Japan
- Average sunshine days in January:
26 days - Average sunshine days in February:
18.7 days - Average sunshine days in March:
17.2 days - Average sunshine days in April:
14.9 days - Average sunshine days in May:
16.8 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
14.1 days - Average sunshine days in August:
14.9 days - Average sunshine days in September:
12.6 days - Average sunshine days in October:
14.3 days - Average sunshine days in November:
19.1 days - Average sunshine days in December:
24.3 days
The month with the most sunshine days is January (26 days).
The month with the least sunshine days is June (11.9 days).
Average UV index
Saitama, Japan
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover
Saitama, Japan
The months with the most cloud cover are June and October (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility
Saitama, Japan
The months with the highest visibility are January, February, March, April, May, August, October, November and December (10km).
The months with the lowest visibility are June, July and September (9km).
