May Weather in Jiangnan, China

Last updated: August 21, 2025

May in Jiangnan, China, presents a vibrant tapestry of weather conditions, characterized by significant temperature variations. Daily maximums can soar to a scorching 41°C (107°F), while the average temperature lingers around a pleasant 23°C (74°F), and nighttime lows drop to a cool 9°C (49°F). This month also witnesses substantial rainfall, with a total precipitation amount reaching 189 mm (7.4 in) over 14 days, contributing to the region's high humidity levels of 87%. Such climatic dynamics create a unique backdrop for the blossoming flora and a lively atmosphere, making May a compelling time to experience the natural beauty and cultural richness of Jiangnan.

May Temperature in Jiangnan

In Jiangnan, China, the month of May marks a significant transition as temperatures begin to rise, bringing a refreshing warmth after the cooler spring months. With minimum temperatures reaching 9°C (49°F) and an average soaring to a comfortable 23°C (74°F), residents can finally shed their winter layers. The maximum temperatures can spike dramatically, hitting a scorching 41°C (107°F), hinting at the approaching heat of summer. This trend showcases a clear shift towards warmer weather, setting the stage for vibrant activities and blooming landscapes across the region. As May unfolds, Jiangnan transforms into a lively tapestry of nature, with the increased warmth inviting both locals and tourists to enjoy the outdoors.

May Weather in Jiangnan: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Jiangnan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jiangnan, May typically has an average temperature of {2}°C ({3}°F), with highs reaching up to {4}°C ({5}°F) and lows dropping to around {6}°C ({7}°F).
JanFebMarAprMayJunJulAugSepOctNovDec454857657378858680695948
Data source: Temperature data for Jiangnan generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Jiangnan

May marks a significant turning point in precipitation for Jiangnan, China, as the region experiences a substantial spike in rainfall. With 189 mm (7.4 in) of rain over 14 days, May not only delivers the highest precipitation of the year so far but also sets the stage for the even wetter months ahead. This dramatic increase contrasts with the milder rainfall of earlier months; for instance, April saw only 97 mm (3.8 in) across 12 days. The wettest months of June and July are on the horizon, showcasing a clear trend of escalating moisture that characterizes the transition into the summer season. As the landscape transforms under this deluge, the region braces for the lush growth that comes with it, marking May as a vital month in Jiangnan's climatic cycle.

May Precipitation Trends in Jiangnan

The chart displays monthly precipitation patterns in Jiangnan, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Jiangnan, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec67751349718928723313690596762
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Jiangnan

In May, the humidity in Jiangnan, China, reaches a peak of 87%, closely mirroring the levels of the upcoming summer months. This slight increase from April’s already high 86% signals the transition into a season characterized by sticky warmth. Following the gradual rise from January’s 65%, where the region begins with a crisp coolness, each month showcases a notable ascent in moisture. By the time July rolls in, humidity climbs to an even more pronounced 91%, underscoring the sultry ambiance that defines the region during the summer. The trend illustrates a climate where humidity plays a pivotal role, shaping the dynamic weather patterns that locals and visitors alike must navigate.

May Average Humidity in Jiangnan

This chart illustrates the average monthly humidity levels in Jiangnan, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Jiangnan is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%71%81%86%87%87%91%87%72%74%80%78%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Jiangnan

In May, the UV Index in Jiangnan, China, reaches a notable 12, placing it in the extreme exposure category, with a burn time of just 10 minutes. This marks the peak of a gradual intensification that began in March when the index first hit 10. The trend indicates a significant escalation in UV radiation as spring transitions into early summer, persisting through June and July at the same extreme levels. It's crucial for residents and visitors to take extra precautions during this month, as the intensity of UV rays can lead to quick skin damage. For more detailed information on UV trends throughout the year, visit Jiangnan UV Index.

Maximum UV Index Levels in Jiangnan for May

The chart shows the monthly maximum UV Index (UVI) for Jiangnan in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Jiangnan typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6710101212121211865
Data source: Jiangnan May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

May Sunshine in Jiangnan

As the seasons transition in Jiangnan, China, May emerges as a radiant highlight, basking in 264 hours of glorious sunshine. This marks a noticeable increase from the previous months, particularly April, which recorded 243 hours. It's in May that the region begins to shake off the lingering grayness of winter, welcoming longer days and brighter skies. Following this, the summer months only intensify the warm embrace of sunlight, peaking in July with an impressive 274 hours. The trend illustrates a gradual ascent in daylight hours from the chilly constraints of winter, showcasing the enchanting allure of spring transitioning into summer, making Jiangnan a picturesque destination during this time. As the year progresses, even as the sunny days begin to wane by September, the delightful stretch of May remains vividly memorable, inviting outdoor adventures and cultural festivities under its luminous sky.

Monthly Sunshine Duration in Jiangnan: May Highlighted

The May sunshine duration represents the total number of hours Jiangnan experiences direct sunlight during the month of May, excluding cloudy or obstructed periods. This chart compares the sunshine duration of May with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec142h192h197h243h264h220h274h309h237h210h194h203h
Data source: Jiangnan May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Jiangnan During May

In Jiangnan, China, the month of May typically heralds a transition from the brighter days of winter and early spring to a period of less sunshine. With a 21% chance of sunny weather, May reflects a trend of diminishing sunlight as the year progresses toward the hotter summer months. This lower likelihood follows April's modest 27% and stands in stark contrast to the brighter days of January, which boasts a 54% chance of sunshine. As the region shifts towards the sultry heat of June, where the likelihood dips further to 16%, May serves as a reminder of the unpredictable nature of weather in this picturesque locale, where brighter days seem to ebb away before the onset of summer.

Percentage of Sunny Days in May in Jiangnan

The chart illustrates the percentage of sunny days in Jiangnan throughout the year, with May highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Jiangnan experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec54%34%24%27%21%16%13%24%45%34%41%55%
Data source: Jiangnan May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Jiangnan in May

As spring unfolds in Jiangnan, China, the transition into May brings a noticeable increase in daylight, reaching 13 hours—a peak that it maintains through the summer months. January sees the least daylight at 10 hours, gradually climbing to 12 hours by April, inviting the vibrant blossoming of spring. With May's arrival, the longer days not only enhance the region's lush beauty but also encourage outdoor activities and gatherings. This trend continues through the summer, providing a wonderful balance of light until September, when daylight begins to taper off again. As the year unfolds, the gradual ebb and flow of daylight hours reflects the cyclical dance of seasons, fostering a deep connection between the people and their ever-changing environment.

Average Daylight Hours in Jiangnan for May

The chart illustrates the variation in daylight duration in Jiangnan throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 30m11h 9m11h 59m12h 51m13h 34m13h 56m13h 45m13h 7m12h 18m11h 26m10h 42m10h 19m
Data source: Jiangnan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Jiangnan

As May descends upon Jiangnan, China, the wind begins to whisper softly, with an average speed of 1.7 m/s (4 mph). This gentle breeze suggests a slight decline from the more stable winds of the previous months, where speeds hovered around 1.8 m/s. Notably, the spring months offer a calm transition before the summer months surge with a lively 2.3 m/s (5 mph) in July. The patterns reveal a dip in wind intensity as the temperatures warm, a brief reprieve before the energetic gusts of later summer and autumn. The overall trend highlights Jiangnan’s temperate climate, where the winds act as a subtle backdrop to the vibrant life unfolding throughout the season.

Average May Wind Speed in Jiangnan

The chart displays monthly wind speed patterns in Jiangnan, with values for each month shown alongside May's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how May's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec1.91.81.81.81.7 m/s1.42.31.51.72.11.71.8
Data source: Jiangnan May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Jiangnan Compares to Other Months

Weather in Jiangnan varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Jiangnan, focusing on differences in temperature, rainfall, humidity, and UV levels.

May and January present contrasting weather conditions. In May, temperatures are significantly warmer, with a minimum of 9°C (49°F) and an average high reaching 41°C (107°F), along with a high humidity level of 87%. This month also experiences considerable rainfall, with 189 mm (7.4 in) of precipitation over approximately 14 days. In contrast, January is much colder, featuring a minimum temperature of -5°C (23°F) and an average high of 25°C (78°F). Precipitation in January is lighter, totaling 67 mm (2.7 in) across about 8 days with a humidity level of 65%. For more detailed insights, visit Jiangnan weather in January.

May and February present a stark contrast in weather patterns. In May, temperatures soar with a minimum of 9°C (49°F) and an average of 23°C (74°F), peaking at a scorching 41°C (107°F), while February sees much cooler conditions with a minimum of -3°C (26°F) and an average of only 9°C (48°F). Precipitation is notably higher in May, totaling 189 mm (7.4 in) across 14 days, compared to February's 75 mm (2.9 in) over just 10 days. Moreover, humidity levels in May are significantly elevated at 87%, unlike February's more manageable 71%. For more details, you can check Jiangnan weather in February.

In comparing the weather of May and March, May experiences significantly warmer temperatures, ranging from a minimum of 9°C (49°F) to a scorching maximum of 41°C (107°F), with an average of 23°C (74°F). In contrast, March has lower temperatures, with a minimum of -1°C (31°F) and a maximum of 31°C (89°F), averaging 14°C (57°F). Additionally, May sees higher precipitation levels at 189 mm (7.4 in) over 14 days, compared to March’s 134 mm (5.3 in) over 15 days. Humidity is also notably higher in May at 87%, while March has a humidity level of 81%. For more detailed insights about March weather, you can check Jiangnan weather in March.

In April, the temperature ranges from a minimum of 4°C (39°F) to a maximum of 34°C (93°F), with an average of 18°C (65°F). The month experiences 97 mm (3.8 in) of precipitation over 12 days and maintains a humidity level of 86%. Comparatively, May sees a significant increase in temperatures, with a minimum of 9°C (49°F), an average of 23°C (74°F), and a peak of 41°C (107°F). Additionally, May has higher precipitation at 189 mm (7.4 in) spread across 14 days, while humidity remains high at 87%. For more detailed information, you can visit Jiangnan weather in April.

May's weather features a wide temperature range with a minimum of 9°C (49°F) and a maximum that can reach up to 41°C (107°F), averaging around 23°C (74°F). The month experiences significant precipitation, totaling 189 mm (7.4 in) over 14 days, along with high humidity at 87%. In contrast, June brings slightly warmer conditions, with a minimum temperature of 15°C (60°F) and an average of 25°C (78°F), peaking at 38°C (100°F). Precipitation increases to 286 mm (11.3 in) across 19 days, maintaining the same humidity level of 87%. Therefore, while June is warmer on average, it also experiences more rainfall than May. For more details, visit Jiangnan weather in June.

In comparing the weather conditions of May and July, we notice some distinct differences. May experiences a broader temperature range with a minimum of 9°C (49°F) and an average of 23°C (74°F), while July boasts milder nights with a minimum temperature of 21°C (70°F) and a higher average of 29°C (85°F). Although both months reach maximum temperatures of around 41°C (106-107°F), July tends to be more humid, with humidity levels peaking at 91% compared to May's 87%. Additionally, July sees more precipitation, totaling 233 mm (9.2 in) over 16 days, compared to May's 189 mm (7.4 in) over 14 days. For more detailed information, you can check out Jiangnan weather in July.

In May, temperatures range significantly, with a minimum of 9°C (49°F) and an average of 23°C (74°F), peaking at 41°C (107°F). This month experiences considerable rainfall, with 189 mm (7.4 in) of precipitation over 14 days, all while maintaining high humidity levels at 87%.

In contrast, August offers a warmer climate, with minimum temperatures starting at 22°C (71°F) and an average of 30°C (87°F), reaching a maximum of 41°C (106°F). Precipitation decreases to 136 mm (5.3 in) over just 11 days, but the humidity remains consistent at 87%. Overall, while both months can be quite warm, August is typically drier and more stable in temperature. For more detailed information, check out Jiangnan weather in August.

May and September showcase distinct weather patterns. In May, temperatures range from a cool 9°C (49°F) at night to a scorching 41°C (107°F) during the day, averaging around 23°C (74°F). This month also sees considerable rainfall, accumulating 189 mm (7.4 in) over 14 days, contributing to high humidity levels of 87%. In contrast, September offers milder temperatures, with nighttime lows of 16°C (62°F) and daytime highs reaching 39°C (102°F), averaging 27°C (80°F). The precipitation decreases significantly to 90 mm (3.6 in) over 11 days, resulting in lower humidity at 72%. For a closer look at the variations in weather, you can explore more about Jiangnan weather in September.

May and October present contrasting weather patterns. In May, temperatures can soar with a maximum reaching up to 41°C (107°F), averaging around 23°C (74°F), while October sees a cooler maximum of 37°C (98°F) and an average of 21°C (69°F). Precipitation is significantly higher in May, with 189 mm (7.4 in) spread over 14 days compared to just 59 mm (2.3 in) over 7 days in October, leading to a more humid atmosphere in May at 87% humidity compared to October's 74%. For a closer look at October weather specifics, check out Jiangnan weather in October.

May experiences a wide range of temperatures, with minimums around 9°C and maximums potentially reaching up to 41°C, making it significantly warmer overall compared to November, which has a milder temperature range from 3°C to 32°C. The average temperature in May is also notably higher at 23°C, compared to November’s 15°C. Additionally, May is characterized by higher precipitation levels, receiving 189 mm over approximately 14 days, while November sees much less rainfall at 67 mm spread across about 9 days. Humidity levels are slightly elevated in May at 87%, compared to 80% in November. For more specific details about weather patterns during this month, you can check Jiangnan weather in November.

May and December exhibit stark contrasts in weather conditions. In May, temperatures soar with a minimum of 9°C (49°F) and can reach highs of up to 41°C (107°F), while the average temperature settles around a warm 23°C (74°F). The month also experiences significant rainfall, with 189 mm (7.4 in) spread over 14 days, creating a humid environment with a relative humidity of 87%. In contrast, December presents a much cooler climate, featuring minimum temperatures plummeting to -2°C (29°F) and a maximum of 25°C (78°F), with an average of 9°C (49°F). The precipitation in December is notably less at 62 mm (2.5 in) over just 9 days, and humidity decreases to 78%, contributing to a much drier atmosphere. For more detailed insights, you can check out Jiangnan weather in December.

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Conclusion: What to Expect From May Weather in Jiangnan

As May settles in over Jiangnan, the weather transitions into a lively embrace of warmth and moisture, distinctly different from the cooler months preceding it. With temperatures reaching a peak of 41°C (107°F) during the day and a refreshing average of 23°C (74°F), the month marks a significant shift towards humidity, averaging 87%. While the rainfall of 189 mm (7.4 in) over 14 days adds a lush vibrancy to the landscape, it also invites the kind of steamy weather that characterizes this time of year. For a deeper understanding of how May and other months influence the climate in this beautiful region, explore Jiangnan Climate.