May Weather in Lanzhou, China

Last updated: August 21, 2025

Experience the vibrant May weather in Lanzhou, China, where the temperature oscillates between a minimum of 3°C (37°F) and a maximum of 32°C (90°F), offering a refreshing mix of warmth and coolness. With an average temperature of 16°C (60°F), this month invites outdoor exploration and enjoyment. Expect around 51 mm (2.0 in) of precipitation over about 7 days, contributing to a humidity level of 78% that enhances the lush landscapes. Whether you're strolling along the Yellow River or hiking in the nearby mountains, May in Lanzhou promises a dynamic climate brimming with opportunities for adventure.

May Temperature in Lanzhou

In May, Lanzhou, China, basks in the warmth of spring, as temperatures take a notable leap from the lingering chill of winter. The month begins with minimums around 3°C (37°F), gradually rising to a pleasant average of 16°C (60°F), and peaking at a delightful 32°C (90°F) during the day. This upward trend illustrates a significant transformation, showcasing a city that transitions from icy nights to sunlit afternoons. With such a vibrant temperature range, May serves as an inviting prelude to summer, making it an ideal time for outdoor exploration and enjoying the lush scenery emerging from the winter's grasp.

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

The chart illustrates May temperature patterns in Lanzhou, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lanzhou, 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).
JanFebMarAprMayJunJulAugSepOctNovDec232942526067716860483525
Data source: Temperature data for Lanzhou 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 Lanzhou

In May, Lanzhou experiences a significant uptick in rainfall, receiving 51 mm (2.0 in) over 7 days, which marks a notable increase from the previous months. This rise in precipitation is a vital precursor to the wetter months ahead, as April's rainfall of 40 mm (1.6 in) suggests a trend of escalating moisture during spring. As the city transitions into summer, the pattern indicates not only a shift in the volume of rainfall but also in frequency, paving the way for the even heavier rains of June and July. The accumulation of moisture during May sets the stage for the lush, vibrant landscapes characteristic of Lanzhou’s later summer months, highlighting the importance of spring rainfall in the region's climate rhythm.

May Precipitation Trends in Lanzhou

The chart displays monthly precipitation patterns in Lanzhou, 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 Lanzhou, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec6814405158811257048125
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in Lanzhou

In Lanzhou, China, May brings a slight reprieve in humidity, with levels dropping to 78%. This marks a continuation of a downward trend from the more humid months of winter and early spring, where humidity hovered between 81% and 85%. As the city transitions into summer, June sees an uptick in humidity at 80%, indicating that while May offers a brief moment of relief, the surrounding months trend towards higher moisture levels, peaking during the warmer summer months when humidity reaches 82% in July and 86% in August. Overall, May serves as a transitional phase, bridging the gap between the cooler, drier spring and the warmer, more humid summer.

May Average Humidity in Lanzhou

This chart illustrates the average monthly humidity levels in Lanzhou, 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 Lanzhou is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%85%85%83%78%80%82%86%87%88%86%79%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Lanzhou

As May rolls into Lanzhou, China, residents experience a significant rise in the UV Index, peaking at 12, which falls under the extreme exposure category. This marks a clear trend from the previous months, where the UV Index steadily climbed from a moderate level of 3 in January to a very high 10 in April. With only 10 minutes before skin begins to burn, it's crucial to take protective measures during this month. The high UV levels continue into June and July, making it essential for locals and visitors alike to stay aware of sun safety. For more insights on this year-round trend in Lanzhou, check out the detailed Lanzhou UV Index.

Maximum UV Index Levels in Lanzhou for May

The chart shows the monthly maximum UV Index (UVI) for Lanzhou 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 Lanzhou typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec358101212121110853
Data source: Lanzhou 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 Lanzhou

May brings a delightful increase in sunshine to Lanzhou, China, with 329 hours of bright days—an impressive rise compared to the preceding months. This peak month showcases a warm trend as spring transitions into early summer, reinforcing Lanzhou's reputation as a sun-kissed destination. Following March’s gradual buildup of 306 hours and April’s 287 hours, May stands out, heralding the long, sun-filled days ahead. The pattern of increasing sunlight continues into June and July, where hours reach their annual zenith, making Lanzhou a perfect haven for those seeking rejuvenating sunshine.

Monthly Sunshine Duration in Lanzhou: May Highlighted

The May sunshine duration represents the total number of hours Lanzhou 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.
JanFebMarAprMayJunJulAugSepOctNovDec224h272h306h287h329h311h348h316h285h267h271h274h
Data source: Lanzhou May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Lanzhou During May

As May rolls into Lanzhou, the likelihood of sunny weather brings a ray of hope, with a 45% chance of sunshine adorning the month. While this figure indicates a slight increase compared to the dull days of April, which sees only a 34% chance, it still reflects the lingering uncertainty of early spring. Interestingly, as we transition from spring into early summer, the sun tends to shine more consistently; for instance, July boasts a 55% chance of sunny days. Therefore, while May may not be the sunniest month, it stands as a bridge toward brighter and warmer days ahead, with a refreshing mix of sun and clouds that characterizes the shifting season.

Percentage of Sunny Days in May in Lanzhou

The chart illustrates the percentage of sunny days in Lanzhou 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 Lanzhou experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec61%54%41%34%45%31%55%45%47%40%78%60%
Data source: Lanzhou May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Lanzhou in May

As May unfolds in Lanzhou, China, the city basks in an inviting 14 hours of daylight, marking a peak in the gradual increase that has characterized the months leading up to this point. Beginning with a modest 9 hours in January, daylight steadily stretches, revealing a trend of increasing sunlight that peaks in late spring and early summer. April’s 13 hours laid the groundwork for May's brilliance, which continues into June and July with the same generous daylight hours. This seasonal progression showcases a vivid contrast to the shorter days of autumn and winter, inviting both residents and visitors to enjoy the expanding opportunities for outdoor activities and cultural festivities that thrive under Lanzhou's luminous sky.

Average Daylight Hours in Lanzhou for May

The chart illustrates the variation in daylight duration in Lanzhou throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 59m10h 51m11h 58m13h 6m14h 4m14h 33m14h 18m13h 28m12h 22m11h 14m10h 14m9h 44m
Data source: Lanzhou daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Lanzhou

In Lanzhou, China, May ushers in a slight increase in average wind speeds, reaching 2.2 m/s (5 mph), marking a gradual rise from the preceding months. This gentle breeze, a subtle transition from the calmer winter months, sets the tone for a vibrant spring. Following closely behind, April reflects similar winds at 2.1 m/s (5 mph), signaling a stable trend in the lead-up to summer. As the year progresses, the wind speeds maintain a moderate rhythm, fluctuating between 2.1 m/s and 2.0 m/s during the hotter months of June and July before tapering off slightly in the fall months. Overall, May stands out as a pivotal moment in Lanzhou's windy landscape, embodying the both refreshing and invigorating qualities of this dynamic season.

Average May Wind Speed in Lanzhou

The chart displays monthly wind speed patterns in Lanzhou, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1.82.02.12.12.2 m/s2.12.02.11.91.71.71.5
Data source: Lanzhou May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Lanzhou Compares to Other Months

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

May and January offer starkly contrasting weather conditions. In May, temperatures range from a chilly 3°C (37°F) at night to a warm 32°C (90°F) during the day, resulting in an average of 16°C (60°F) and a humidity level of 78%. This month also sees some rain, with 51 mm (2.0 in) of precipitation over approximately seven days, making it relatively wetter. In contrast, January experiences frigid temperatures, with a minimum of -19°C (-2°F) and a maximum of only 13°C (55°F), settling at an average low of -5°C (23°F). Precipitation is minimal at just 6 mm (0.2 in) over two days, paired with a slightly higher humidity of 81%. The difference in their respective climates illustrates the broad seasonal shifts, emphasizing May's warmth and January's deep freeze. For more details, check out Lanzhou weather in January.

May and February present strikingly different weather conditions. In May, temperatures range from a chilly 3°C (37°F) at night to a warm 32°C (90°F) during the day, with an average of 16°C (60°F). The month experiences moderate precipitation of 51 mm (2.0 in) over about 7 days, alongside a humidity level of 78%. In contrast, February is much colder, with nighttime lows plummeting to -21°C (-5°F) and daytime highs only reaching 17°C (63°F), resulting in an average temperature of -2°C (29°F). Precipitation is minimal at just 7 mm (0.3 in) across 2 days, but humidity is slightly higher at 85%. For more specifics on February weather, you can refer to Lanzhou weather in February.

When comparing the weather in May and March, a significant shift in temperature and conditions becomes apparent. In May, temperatures range from a minimum of 3°C (37°F) to a maximum of 32°C (90°F), with an average of 16°C (60°F). This month experiences a moderate amount of precipitation at 51 mm (2.0 in) over seven days, and the humidity is relatively high at 78%. In contrast, March is much colder, with temperatures ranging from a chilling -11°C (13°F) to a warmer peak of 26°C (79°F) and an average of just 6°C (43°F). The precipitation in March is significantly lower at 14 mm (0.5 in) over three days, yet the humidity remains high at 85%. For more detailed insights about the climate in March, visit Lanzhou weather in March.

In comparing the weather patterns of April and May, we notice distinct differences in temperature and precipitation. April experiences a minimum temperature of -6°C (21°F) and an average of 11°C (52°F), while May sees a warmer minimum of 3°C (37°F) and a significantly higher average temperature of 16°C (60°F). Both months have similar maximum temperatures, with May peaking at 32°C (90°F) compared to April's 31°C (87°F).

Precipitation also varies; April has 40 mm (1.6 in) of rain over 9 days, whereas May receives a bit more at 51 mm (2.0 in) over 7 days. Interestingly, humidity is slightly higher in April at 83% compared to May's 78%. For more detailed information on April conditions, you can refer to Lanzhou weather in April.

In May, temperatures in Lanzhou typically range from a minimum of 3°C (37°F) to a maximum of 32°C (90°F), with an average of 16°C (60°F). The month sees about 51 mm (2.0 in) of precipitation over 7 days, and the humidity levels hover around 78%. In contrast, June experiences slightly warmer conditions, with temperatures ranging from a minimum of 8°C (46°F) to the same maximum of 32°C (91°F), and an average temperature of 20°C (67°F). Rainfall increases to 58 mm (2.3 in) over 9 days, and humidity rises a bit to 80%. For a closer look at June weather patterns, you can check out Lanzhou weather in June.

May and July present distinct weather patterns, with May offering a more temperate experience. In May, temperatures range from a cool 3°C (37°F) at night to a warm 32°C (90°F) during the day, with an average of 16°C (60°F). The month experiences moderate rainfall, totaling 51 mm (2.0 in) over about 7 days and maintaining a humidity level of 78%. In contrast, July sees significantly higher temperatures, with nighttime lows of 11°C (53°F) and daytime highs reaching up to 36°C (97°F), averaging 22°C (72°F). Precipitation increases to 81 mm (3.2 in) over about 11 days, coupled with slightly higher humidity at 82%. For a more detailed look at July's weather conditions, visit Lanzhou weather in July.

May and August exhibit distinct weather characteristics. In May, temperatures range from a cool minimum of 3°C (37°F) to a warm maximum of 32°C (90°F), with an average temperature of 16°C (60°F). The month sees a moderate amount of rainfall, with 51 mm (2.0 in) of precipitation occurring over 7 days, and humidity levels average around 78%.

Conversely, August presents a warmer climate, with minimum temperatures of 10°C (50°F) and maximum temperatures reaching up to 35°C (95°F), resulting in an average of 20°C (68°F). Precipitation is significantly higher, totaling 125 mm (4.9 in) across 13 days, and humidity increases to 86%. For a closer look at the weather conditions during this time, refer to Lanzhou weather in August.

May and September each bring unique weather characteristics, reflecting their transitional roles in the seasons. In May, temperatures range from a minimal 3°C (37°F) to a warm 32°C (90°F), with an average of 16°C (60°F). The month experiences approximately 51 mm (2.0 in) of precipitation over about 7 days, along with a relatively low humidity of 78%. In contrast, September sees slightly cooler morning temperatures starting at 6°C (42°F) while still reaching a maximum of 31°C (87°F) and maintaining the same average temperature of 16°C (61°F). Rainfall increases to around 70 mm (2.8 in) across 12 days, accompanied by higher humidity levels at 87%. For more specific details about September's weather, you can check out Lanzhou weather in September.

In comparing the weather between May and October, May tends to be much warmer, with average temperatures soaring up to 16°C (60°F) and maximums reaching 32°C (90°F). In contrast, October cools down significantly, featuring an average temperature of only 9°C (48°F) and occasional dips to a minimum of -1°C (30°F). While both months experience similar precipitation levels, with 51 mm (2.0 in) in May and 48 mm (1.9 in) in October, October sees slightly more rainy days, totaling 9. Additionally, the humidity in October is higher at 88%, compared to May's 78%. For more details on the conditions in October, check out the link Lanzhou weather in October.

May and November present markedly different weather patterns. May typically showcases a broad temperature range, with minimums around 3°C (37°F) and maximums reaching up to 32°C (90°F), resulting in an average temperature of 16°C (60°F). This month sees around 51 mm of precipitation over approximately 7 days, paired with a humidity level of 78%. In contrast, November experiences much colder conditions, with temperatures dipping to a minimum of -13°C (10°F) and an average hovering around 2°C (36°F). The maximum temperature reaches only up to 20°C (69°F). Precipitation is significantly less in November, at just 12 mm over 3 days, but the humidity rises to 86%, contributing to a chilly atmosphere. For more details, you can check Lanzhou weather in November.

May and December present stark contrasts in weather conditions. In May, temperatures range from a chilly 3°C (37°F) at night to a warm 32°C (90°F) during the day, with an average of 16°C (60°F). The month sees about 51 mm (2.0 in) of precipitation over roughly 7 days, and humidity remains high at 78%, creating a comfortable spring atmosphere. In contrast, December plunges to significantly colder temperatures, with a minimum of -18°C (1°F) and a maximum of only 12°C (54°F), averaging -4°C (25°F). Precipitation drops drastically to just 5 mm (0.2 in) on a single day, yet humidity persists at 78%. For further details on December weather conditions, check out Lanzhou weather in December.

Compare Lanzhou's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Lanzhou

As May unfolds in Lanzhou, it brings a delightful shift in weather compared to the chill of early spring, embracing warmer temperatures that herald the approach of summer. With averages around 16°C and maximums reaching up to 32°C, daytime feels pleasantly warm while nighttime cools down, offering a comfortable respite. Although humidity levels peak at 78%, the month's rainfall is relatively modest, averaging around 51 mm across a handful of days. This combination of warmth and moisture adds a refreshing vibrancy to the surroundings, making May an ideal time to enjoy the blooming beauty of the season. For more insightful details on seasonal variations, explore Lanzhou Climate.