Last updated: August 21, 2025
In Si'an, China, May weather showcases a dynamic range, with temperatures soaring to a maximum of 37°C (99°F), contrasted by cooler nights that dip to a minimum of 8°C (47°F). The average temperature hovers around a pleasant 22°C (71°F), making it a favorable time for outdoor activities. However, May also brings significant precipitation, totaling 135 mm (5.3 in) over 11 days, contributing to the humidity levels that reach a notable 85%. This blend of warmth and moisture creates a vibrant atmosphere, perfect for experiencing the region's blossoming natural beauty.
In May, Si'an, China, experiences a delightful shift in temperatures, with a minimum of 8°C (47°F), an average of 22°C (71°F), and a peak reaching 37°C (99°F). This month marks the transition into warmer weather, a significant rise from April's milder conditions. The gradual increase contrasts sharply with the harsh winter months, making May an ideal time for outdoor activities. As the temperatures climb, the vibrant landscapes come alive, inviting both locals and visitors to revel in the season’s warmth. With rising averages throughout spring, May stands out as a month of blossoming opportunities and pleasant days under the sun.
In May, Si'an experiences a noticeable uptick in precipitation, with 135 mm (5.3 in) falling over 11 days—making it one of the wetter months of the year. This surge represents a dramatic increase from earlier months, such as April, which had 81 mm (3.2 in) of rainfall over just 8 days. The transition into late spring brings not only heavier showers but also sets the stage for the even wetter months ahead in June and July, where Si'an typically sees its peak precipitation levels. This pattern indicates a clear trend of escalating rainfall in late spring, foreshadowing the monsoon season's arrival and the lush landscape that follows.
In Si'an, China, May brings a notable humidity level of 85%, setting the stage for a lush and vibrant spring atmosphere. This figure reflects a slight dip from April's peak of 86%, which marks the height of moisture before the summer months. As the region transitions into June, humidity remains stable at 85%, hinting at the arrival of the sweltering summer. Overall, the trend in humidity throughout the months showcases a gradual increase from January's 70%, culminating in the high levels seen in the warmer months, with July reaching a peak of 90%. May serves as a critical juncture as the landscape shifts towards the more humid and hot season, offering a mix of rejuvenating warmth and the anticipation of the summer heat.
In May, Si'an, China, experiences a dramatic surge in UV intensity, reaching an extreme UV Index of 11, which translates to a rapid burn time of just 10 minutes. This significant increase follows a steady climb from a moderate index of 5 in January to a very high index in April. As the summer approaches, residents and visitors must be increasingly vigilant about sun exposure, adopting protective measures such as sunscreen and protective clothing. Compared to the previous months, where burn times were notably longer, May’s intensity highlights the urgent need for sun safety awareness. For more information, check out the detailed Si'an UV Index.
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In Si'an, China, the sheen of sunshine steadily brightens throughout the spring, making May particularly radiant with 278 hours of sunlight. This month signifies a notable leap from the previous April's 251 hours, highlighting the arrival of summer's warmth. As daylight hours increase, May showcases the city's transformation as nature bursts into bloom, encouraging both locals and visitors to embrace outdoor activities. Following May, the sun continues to shine brightly into June, though with a slight dip to 263 hours, maintaining an overall trend of abundant sunshine that peaks in the summer months, notably in August with 300 hours. This pattern not only enhances Si'an's vibrant culture but also invites explorers to bask in its bright days and scenic landscapes.
In Si'an, China, the likelihood of sunny weather ebbs and flows throughout the year, with May offering a modest 26% chance of sunshine. This figure indicates a slight decline from the preceding months of April (29%) and March (25%), suggesting that as spring transitions into early summer, the sun may be less generous. Notably, the trend illustrates that while the sunny days of May are fewer compared to the more promising months of January (50%) and November (52%), the region will soon see an uptick in sun-soaked days as it moves into the warmer months of August and September, where the chances climb to 31% and 48%, respectively. Thus, those visiting Si'an in May might want to prepare for a mix of weather, balancing their plans between sunny interludes and the potential for cloudier skies.
As the calendar transitions from winter to spring in Si'an, China, daylight hours gradually increase, peaking beautifully in May with 13 hours of sunlight. This month marks a vibrant shift from the 10 hours of daylight in January, drawing residents outdoors to bask in the longer days. Following May, June takes advantage of the summer solstice, offering the most daylight at 14 hours, creating a perfect backdrop for outdoor activities. However, as summer wanes into early autumn, daylight begins to taper off again, with September seeing a decrease back to 12 hours. This cyclical pattern highlights Si'an's dynamic seasonal changes, where each month brings its own unique share of sunlight, inviting both locals and visitors to embrace the rhythm of nature.
In Si'an, China, the month of May experiences a subtle shift in wind patterns, with an average wind speed of 2.4 m/s (5 mph), marking a slight decrease from the April average of 2.6 m/s (6 mph). This trend reflects a gentle transition into the warmer months, as winds gradually soften leading into summer. Interestingly, July sees a noticeable uptick to 2.9 m/s (7 mph), suggesting a seasonal peak in wind activity, before waning again in August. Overall, the wind speeds in Si'an exhibit a consistent ebb and flow, with winter months generally holding steadier, calm breezes compared to the more variable winds of late spring and summer.
Weather in Si'an varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Si'an, focusing on differences in temperature, rainfall, humidity, and UV levels.
In May, the weather is noticeably warmer and more humid than in January, with temperatures ranging from a minimum of 8°C (47°F) to a scorching maximum of 37°C (99°F) and an average of 22°C (71°F). The month also sees significant rainfall, totaling 135 mm (5.3 in) over about 11 days, creating a humid environment with an average humidity of 85%. In contrast, January experiences much colder temperatures, with a minimum of -11°C (13°F) and an average of just 5°C (41°F), peaking at a comfortable 20°C (68°F). Precipitation in January is less frequent, averaging 68 mm (2.7 in) over 8 days, accompanied by lower humidity at 70%. For more details on January weather, visit Si'an weather in January.
May and February present starkly different weather conditions. In May, temperatures can soar with a minimum of 8°C (47°F) and an average reaching up to 22°C (71°F), peaking at a hot 37°C (99°F). This month also sees significant rainfall, with 135 mm (5.3 in) of precipitation over 11 days, accompanied by high humidity at 85%. In contrast, February offers a chillier atmosphere, where temperatures range from a minimum of -8°C (18°F) to an average of 6°C (44°F), and maximums around 26°C (79°F). Precipitation is less frequent in February, totaling 71 mm (2.8 in) over 10 days, and humidity levels are lower at 73%. To learn more about February's climate specifics, visit Si'an weather in February.
May and March exhibit contrasting weather conditions. In May, temperatures are significantly warmer, with lows around 8°C (47°F) and highs reaching up to 37°C (99°F), resulting in an average temperature of 22°C (71°F). In comparison, March starts chilly with minimum temperatures of -1°C (30°F) and averages only 12°C (54°F), while the maximum can go up to 29°C (84°F). Precipitation in May is higher at 135 mm (5.3 in) over 11 days, compared to March’s 106 mm (4.2 in) spread across 13 days. The humidity levels are quite similar, with May at 85% and March at 82%. For more detailed information on March weather, check out Si'an weather in March.
In comparing the weather between April and May, we see a notable increase in temperatures. April experiences a minimum of 2°C (35°F) and an average of 17°C (62°F), while May's temperatures range from a minimum of 8°C (47°F) to an average of 22°C (71°F), culminating in a maximum of 37°C (99°F). Additionally, May is wetter than April, with 135 mm (5.3 in) of precipitation over 11 days, compared to April's 81 mm (3.2 in) over 8 days. Despite May's higher temperatures, humidity remains relatively consistent, with April at 86% and May slightly lower at 85%. For a closer look at April's conditions, you can refer to Si'an weather in April.
May and June both experience warm temperatures, with maximums reaching up to 37°C (99°F). However, May tends to have a lower average temperature of 22°C (71°F), while June sees a slight increase to an average of 25°C (77°F). Additionally, June is substantially wetter, recording 257 mm (10.1 in) of precipitation over 15 days compared to May's 135 mm (5.3 in) over 11 days. Despite the comparable humidity levels of 85% in both months, June's increased rainfall makes it notably more humid. For more detailed weather information, you can check Si'an weather in June.
In May, the weather is characterized by a wider temperature range, with minimums dipping to 8°C (47°F) and maximums reaching 37°C (99°F). The month experiences an average temperature of 22°C (71°F) and a total precipitation of 135 mm (5.3 in) over 11 days, coupled with a humidity level of 85%. In contrast, July sees significantly warmer temperatures, with a minimum of 20°C (68°F), an average of 28°C (83°F), and highs reaching up to 39°C (102°F). This month also experiences increased precipitation, totaling 299 mm (11.8 in) over 17 days and slightly higher humidity at 90%. For more detailed insights, you can check Si'an weather in July.
May and August exhibit significant differences in weather patterns. In May, temperatures range from a minimum of 8°C (47°F) to a maximum of 37°C (99°F), with an average of 22°C (71°F). The month sees about 135 mm (5.3 in) of precipitation over 11 days, along with high humidity levels at 85%. In contrast, August brings warmer temperatures, with a minimum of 18°C (64°F), an average of 29°C (84°F), and a peak of 38°C (100°F). The precipitation increases to 190 mm (7.5 in) spread across 15 days, and humidity rises slightly to 88%. For more detailed insights, see Si'an weather in August.
May and September present distinct weather patterns, with May characterized by a wider temperature range, featuring a minimum of 8°C and a maximum of 37°C. The average temperature in May is around 22°C, accompanied by considerable precipitation of 135 mm over 11 days, resulting in a humid environment with 85% humidity. In contrast, September sees milder temperatures, with a minimum of 13°C and a maximum of 36°C, yielding an average of 25°C. Although September experiences slightly less precipitation at 120 mm over 12 days, it benefits from lower humidity levels, averaging 75%. For further details on September weather specifically, check out Si'an weather in September.
In May, temperatures can range from a cool 8°C (47°F) at night to a hot 37°C (99°F) during the day, with an average of 22°C (71°F). This month also sees a significant amount of precipitation, with around 135 mm (5.3 in) falling over 11 days and high humidity levels at 85%. In contrast, October offers a more moderate climate, with temperatures dipping slightly to a minimum of 7°C (44°F) and a maximum of 34°C (93°F), averaging 19°C (66°F). Rainfall is much less frequent, amounting to only 50 mm (2.0 in) over 8 days, and the humidity drops to a comfortable 76%. For more detailed information, you can check Si'an weather in October.
May and November present quite contrasting weather conditions. In May, temperatures range from a minimum of 8°C (47°F) to a maximum of 37°C (99°F), with an average temperature of 22°C (71°F), making it a notably warm month. The humidity is high at 85%, and the area experiences a significant amount of rainfall, totaling 135 mm (5.3 in) over around 11 days.
In contrast, November sees much cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 28°C (83°F), while the average temperature drops to 13°C (56°F). Precipitation is also considerably less, with only 45 mm (1.8 in) falling over 8 days. Humidity remains relatively high at 84%, but overall, November feels much crisper compared to the warmth of May. For a closer look at November weather, you can check out Si'an weather in November.
May and December present contrasting weather patterns. In May, temperatures range from a minimum of 8°C (47°F) to a maximum of 37°C (99°F), with an average of 22°C (71°F). This month is characterized by higher humidity at 85% and more precipitation, totaling 135 mm (5.3 in) over about 11 days. In contrast, December brings a chillier atmosphere, with temperatures dipping as low as -5°C (22°F) and peaking at 23°C (73°F), accompanied by a much cooler average of 7°C (44°F). Precipitation is significantly lower at 52 mm (2.0 in) over about 8 days, and humidity drops to 77%. For more details on December weather, you can refer to Si'an weather in December.
As May arrives in Si'an, the weather experiences a notable transformation, embracing the warmth of spring. With temperatures climbing significantly, days can feel balmy, while cool evenings provide a pleasant contrast. Though occasional rain can be expected, with around 11 days of precipitation, the humidity adds a lush vibrancy to the landscape. This blend of warmth and moisture sets May apart from the cooler, drier months, making it a delightful time to enjoy the outdoors. For a deeper understanding of how Si'an's weather evolves throughout the year, visit Si'an Climate.