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Contents
- The climate of Xi'an
- The best time to visit Xi'an
- The worst time to visit Xi'an
- Spring weather in Xi'an
- Summer weather in Xi'an
- Autumn weather in Xi'an
- Winter weather in Xi'an
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average UV index
Climate and monthly weather forecast
The climate of Xi'an
Xi'an, situated in China, belongs to the Köppen climate classification of Cwa, a zone characterized by a humid subtropical climate with a dry winter. Within this climatic framework, the city experiences distinct seasonal variations in its weather parameters, including temperature, rainfall, and humidity.
Analysing the yearly weather data indicates that the highest average temperature swings from 4.8°C (40.6°F) in January to a peak of 32.1°C (89.8°F) in July. On the other side, the lowest average temperature ranges from -3.8°C (25.2°F) in January to 21.9°C (71.4°F) also in July. The city experiences the maximum average relative humidity of 79% in September, compared to the lowest of 62% registered during June. Precipitation exhibits a significant degree of variation, with the volume of rainfall progressing from a mere 6mm (0.24") in December, reaching a high of 99mm (3.9") in July.
There is also considerable disparity in the length of daylight and sunshine hours throughout the year. Daylight hours are the shortest in December with 9.9 hours, extending to their longest in June, offering 14.4 hours of daylight. Correspondingly, sunshine hours range from 3 hours in both December and January, surging to the longest duration of 6.3 hours in August.
Analysing the yearly weather data indicates that the highest average temperature swings from 4.8°C (40.6°F) in January to a peak of 32.1°C (89.8°F) in July. On the other side, the lowest average temperature ranges from -3.8°C (25.2°F) in January to 21.9°C (71.4°F) also in July. The city experiences the maximum average relative humidity of 79% in September, compared to the lowest of 62% registered during June. Precipitation exhibits a significant degree of variation, with the volume of rainfall progressing from a mere 6mm (0.24") in December, reaching a high of 99mm (3.9") in July.
There is also considerable disparity in the length of daylight and sunshine hours throughout the year. Daylight hours are the shortest in December with 9.9 hours, extending to their longest in June, offering 14.4 hours of daylight. Correspondingly, sunshine hours range from 3 hours in both December and January, surging to the longest duration of 6.3 hours in August.
The best time to visit Xi'an
Considering the temperature, rainfall, and humidity, the optimal time for touring Xi'an falls from March to May. During this period, visitors benefit from the temperate weather, characterized by average temperatures oscillating between 3.6°C (38.5°F) to 21°C (69.8°F), making it comfortable for sightseeing.
The worst time to visit Xi'an
In contrast, the most unfavorable period for visiting Xi'an spans from July to September. The summer months are marked by the highest temperatures, reaching up to 32.1°C (89.8°F), paired with the peak average relative humidity of 79% in September and maximum rainfall of 99mm (3.9") in July. This combination of high heat and humidity can make outdoor activities uncomfortable.
Spring weather in Xi'an
Spring in Xi'an, encompassing the months of March to May, exhibits a moderate weather pattern. The temperature during this season moves between 3.6°C (38.5°F) to 21°C (69.8°F). The volume of rainfall stays primarily contained under 43mm (1.69"), with the number of rainy days not exceeding 8.4. The relative humidity ranges from 63% to 68%, offering a pleasant climate for exploration.
Summer weather in Xi'an
Xi'an's summer period, from June through August, witnesses the hottest months of the year. Temperatures shoot up to a scorching 32.1°C (89.8°F) in July with the lowest average temperature not dropping below 19.2°C (66.6°F). This is coupled with heavy rainfall with a peak at 99mm (3.9") in July, marking it as the wettest month. The average sunshine hours extend up to 6.2 hours while relative humidity varies between 71% to 75%.
Autumn weather in Xi'an
The autumn season in Xi'an, signifying the months of September to November, experiences a decline in temperature from 30.8°C (87.4°F) to 12.2°C (54°F). In concurrence with this, the average rainfall also steps down, fluctuating from 92mm (3.62") in September to 24mm (0.94") in November. The average hours of daylight decrease from 12.4 hours to 10.4 hours during this season.
Winter weather in Xi'an
Winter in Xi'an runs from December to February. The temperature during this season is relatively low, with an average high of 8.3°C (46.9°F) in February and a chilling low of -3.8°C (25.2°F) in January. The amount of rainfall also reduces to its lowest during these months, with values dwindling from 7mm (0.28") in January to 6mm (0.24") in December. Winter days, on average, receive the shortest amount of daylight, hovering around 10 hours, with only 3 hours of sunshine.
Weather in January
January sees the onset of the cold season in Xi'an, China, with temperatures as low as -3.8°C (25.2°F) to highs of 4.8°C (40.6°F), making it one of the coldest months of the year. The city experiences fewer hours of daylight, limited sun exposure, and mild humidity. Weather in January »
Weather in February
With the exit of January, Xi'an in February presents a slight shift towards warmer temperatures. The humidity remains comparatively stable. The daylight period and the sun's exposure gradually increase, brightening the days bit by bit. Weather in February »
Weather in March
March indicates the arrival of spring in Xi'an, bringing with it a subtle increase in temperature and extended daylight hours. There is a palpable shift from February's occasional showers to more frequent rainfall. The weather generally observes a surge in relative humidity levels throughout the month. Weather in March »
Weather in April
April experiences a substantial escalation in temperatures, characterizing a warmer climate compared to March. A marked increase in rainfall from 29mm (1.14") to 43mm (1.69"), expanses over 8.4 days symbolizing the rainy season's approach. Weather in April »
Weather in May
With temperatures escalating from 21°C (69.8°F) to 26.1°C (79°F), the warmth of May, quite distinctively, introduces the hot season in Xi'an. Continued lengthening of daylight, paired with greater sunshine hours, marks the days as visibly brighter. Weather in May »
Weather in June
June marks the onset of summers in Xi'an and is characterized by high temperatures, reaching a peak of 31.2°C (88.2°F). This surge in temperature is significantly higher than May’s weather. It also records increased rainfall as compared to May, indicating an intensifying monsoon pattern. Weather in June »
Weather in July
July unfolds with stability in high temperatures, as the hot conditions in June extend into this month. On an exceptional note, the city records its highest rainfall of 99mm (3.9") over 10 days in the year, signifying the peak of the rainy season. Weather in July »
Weather in August
August in Xi'an ushers in cooler temperatures that bring relief from July's extreme heat. The frequency and amount of rainfall decrease slightly, though the city's weather remains quite humid. Prolonged daylight continues to prevail, shadowed by slightly fewer sunshine hours than in July's time. Weather in August »
Weather in September
The arrival of September rings in the autumn season in Xi'an. It brings cooler temperatures that deviate notably from August’s hotter conditions. However, September experiences a substantial amount of rainfall, which surpasses that of August, over more frequent rain days. Weather in September »
Weather in October
October in Xi'an marks a clear departure from September's weather into the comfort of autumn. Gradual reduction in temperatures, decreased humidity, and lesser rainfall highlight the month's climatic highlights. Shorter daylight durations coupled with fewer sunshine hours start to give a hint of the approaching winter chill. Weather in October »
Weather in November
With a sharp drop in temperatures, November in Xi'an introduces the beginning of the colder season. A significant reduction in rainfall from 60mm (2.36") in October to 24mm (0.94") in November sets a more arid weather trend. Reduced daylight hours and lower UV index readings necessitate the use of warmer clothing and protection from cold winds. Weather in November »
Weather in December
December sees the peak of the cold season in Xi'an with temperatures nose-diving down to -2.5°C (27.5°F). Marked by its meager rainfall of 6mm (0.24"), it's the driest month of the year. Shortest daylight hours and the year’s least sunshine hours contribute to the city’s winter chills. Weather in December »
Updated: Jan 24, 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
What is the coldest month in Xi'an?
Xi'an's January weather, marked by an average high temperature of 4.8°C (40.6°F) and an average low temperature of -3.8°C (25.2°F), is the coldest in the year.
How many days does it rain in Xi'an?
Throughout the year, there are 90.3 rainfall days, and 553mm (21.77") of precipitation is accumulated.
What are the months with the lowest UV index in Xi'an?
The months with the lowest UV index in Xi'an are January and December, with an average maximum UV index of 3.
What is the least humid month in Xi'an?
June is the least humid month, with an average relative humidity of 62%.
When are the longest days in Xi'an?
The month with the longest days is June, with an average of 14h and 24min of daylight.
What is the month with the highest UV index in Xi'an?
June and July, with an average maximum UV index of 11, are months with the highest UV index.
What are the warmest months in Xi'an?
Xi'an notes the warmest temperatures in July, with a average high of 32.1°C (89.8°F) and a low of 21.9°C (71.4°F).
What is the rainiest month in Xi'an?
July is the month with the most rainfall in Xi'an. Rain falls for 10 days and accumulates 99mm (3.9") of precipitation.
What month has the most sunshine in Xi'an?
August has the most sunshine of the year, with an average of 6.3h of sunshine.
What is the most humid month in Xi'an?
The most humid month in Xi'an, China, is September, with an average relative humidity of 79%.
What is the driest month in Xi'an?
December is the month with the least rainfall. Rain falls for 3.4 days and accumulates 6mm (0.24") of precipitation.
What is the month with the shortest days in Xi'an?
With an average of 9h and 54min of daylight, December has the shortest days of the year in Xi'an, China.
Is there Daylight Saving Time (DST) in Xi'an?
Xi'an, China, does not utilize Daylight Saving Time (DST). CST timezone is used over the entire year.
What is the month with the least sunshine in Xi'an?
The month with the least sunshine in Xi'an is December, with an average of 3h of sunshine.
Average temperature
Xi'an, China
The warmest month (with the highest average high temperature) is July (32.1°C).
The month with the lowest average high temperature is January (4.8°C).
The month with the highest average low temperature is July (21.9°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average humidity
Xi'an, China
The month with the highest relative humidity is September (79%).
The month with the lowest relative humidity is June (62%).
Average rainfall
Xi'an, China
- Average rainfall in January:
6.9mm - Average rainfall in February:
9.6mm - Average rainfall in March:
28.6mm - Average rainfall in April:
43mm - Average rainfall in May:
60.2mm - Average rainfall in June:
54.4mm
- Average rainfall in July:
98.6mm - Average rainfall in August:
70.8mm - Average rainfall in September:
91.6mm - Average rainfall in October:
59.9mm - Average rainfall in November:
23.9mm - Average rainfall in December:
5.8mm
The wettest month (with the highest rainfall) is July (98.6mm).
The driest month (with the least rainfall) is December (5.8mm).
Average rainfall days
Xi'an, China
- Average rainfall days in January:
3.6 days - Average rainfall days in February:
4.4 days - Average rainfall days in March:
6.9 days - Average rainfall days in April:
8.4 days - Average rainfall days in May:
8.9 days - Average rainfall days in June:
9 days
- Average rainfall days in July:
10 days - Average rainfall days in August:
9.1 days - Average rainfall days in September:
10.9 days - Average rainfall days in October:
9.7 days - Average rainfall days in November:
6 days - Average rainfall days in December:
3.4 days
The month with the highest number of rainy days is September (10.9 days).
The month with the least rainy days is December (3.4 days).
Average daylight / Average sunshine
Xi'an, China
- Average daylight in January:
10h and 1min - Average daylight in February:
11h and 0min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 2min
- Average daylight in July:
14h and 1min - Average daylight in August:
13h and 2min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in January:
3h and 2min - Average sunshine in February:
3h and 4min - Average sunshine in March:
3h and 5min - Average sunshine in April:
4h and 5min - Average sunshine in May:
5h and 3min - Average sunshine in June:
6h and 1min
- Average sunshine in July:
6h and 1min - Average sunshine in August:
6h and 2min - Average sunshine in September:
4h and 1min - Average sunshine in October:
3h and 4min - Average sunshine in November:
3h and 2min - Average sunshine in December:
3h and 0min
The month with the most sunshine is August (Average sunshine: 6h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
Average UV index
Xi'an, China
The months with the highest UV index are June and July (UV index 11).
The months with the lowest UV index are January and December (UV index 3).
