Last updated: August 21, 2025
May in Hongkou, China, offers a delightful transition into summer, characterized by warm temperatures and high humidity. The maximum temperature can soar to 34°C (94°F), while the average sits comfortably at 21°C (71°F), providing the perfect backdrop for outdoor activities. As nights cool to a minimum of 12°C (53°F), residents and visitors alike can enjoy mild evenings. However, with 117 mm (4.6 in) of rainfall spread over 10 days, it's wise to carry an umbrella during this lush month. The 87% humidity enhances the vibrant flora, creating a picturesque landscape while underscoring the need for hydration and comfort.
As May unfolds in Hongkou, China, temperatures begin to climb noticeably, marking the transition into the warmer months. With a minimum of 12°C (53°F) and an average of 21°C (71°F), the conditions become distinctly more comfortable compared to the earlier months of the year. This increase is accentuated by a maximum temperature soaring to 34°C (94°F), indicating the arrival of the summer heat. The month illustrates a clear upward trend from the cooler spring temperatures, creating an ideal environment for outdoor activities and blossoming festivals. As the city sheds its chill, May emerges as a vibrant precursor to the hotter days that lie ahead.
In May, Hongkou experiences a noticeable increase in precipitation, with a substantial 117 mm (4.6 in) of rain falling over approximately 10 days. This marks the transition into the wet season, following April's more modest 72 mm (2.8 in). The uptick in rainfall not only highlights May as one of the wetter months but also sets the stage for the heavy deluges that follow in June and July, which see precipitation levels soaring to 201 mm and 250 mm, respectively. As spring gives way to summer, the rise in both the volume and frequency of rainfall captures the essence of Hongkou's climate dynamics, preparing the landscape for lush growth and vibrant flora.
As May approaches in Hongkou, China, the humidity remains steady at 87%, marking a continuation of the increasing moisture levels that began in the spring. Starting from a moderate 70% in January, humidity has seen a steady rise, peaking in the summer months with a notable 93% expected in July. This trend highlights a shift towards a more humid climate as the year progresses, with spring and summer months consistently maintaining high levels of humidity. Notably, May’s humidity is mirrored in April, indicating that the region is likely experiencing a stable transition before the summer peaks. As such, residents can expect a warm and moist atmosphere as they move deeper into the year.
As spring transitions into summer, May in Hongkou, China, sees the UV Index peak at 10, placing it firmly in the very high exposure category. This indicates a significant increase in UV radiation compared to earlier months, with a burn time of just 15 minutes. The trend from January to April reflects a steady rise in UV exposure, culminating in May's intense levels that require vigilant sun protection. Following May, the UV levels will escalate even further into the extreme range, peaking in the sultry summer months of June and July. With this gradual buildup of UV intensity, it's crucial for residents and visitors to stay informed about the risks and to take appropriate precautions. For more detailed information on UV levels throughout the year, visit Hongkou UV Index.
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As May approaches in Hongkou, China, residents bask in the warmth of increasing sunshine, with the month delivering an impressive 290 hours of sunlight. This represents a notable rise from the earlier months, marking a steady progression since January’s mere 157 hours. Following the upward trajectory, April’s 267 hours seem like a prelude to May’s peak, part of a broader trend where daylight hours consistently build up towards summer. Indeed, the sun shines brightest in July and August, but May undeniably showcases the vibrant transition into the sun-drenched summer months, creating an inviting atmosphere perfect for outdoor activities and enjoying the blossoming beauty that the season brings.
As May approaches in Hongkou, China, the chance of sunny weather remains fairly modest at 29%. This reflects a continuation of the trend observed in the preceding spring months, where sunny days fluctuate between 29% and 33% for April, indicating that May does not significantly improve upon the earlier months in terms of sunlight. Looking forward, the likelihood dips even further in June to 23%, highlighting a pattern of diminishing sunny days as the summer sets in. Overall, while May may not shine the brightest, it maintains a consistent level of sunny potential compared to its spring predecessors.
In Hongkou, China, the daylight duration exhibits a beautiful progression throughout the year, with a noticeable increase from January to June. Starting with 10 hours in January, daylight gradually extends to a peak of 14 hours in June, marking the height of summer. As the year unfolds, daylight begins to wane, tapering back to 13 hours in July and August, before decreasing to 12 hours in September. The transition back to shorter days is marked by a steady decline, bringing November and December back to the initial 10 hours. This clear seasonal pattern not only highlights the vibrant energy of spring and summer but also reflects the gradual return to cozy winter days, creating a rhythmic cycle that many locals cherish.
In May, Hongkou experiences a steady average wind speed of 3.7 m/s (8 mph), maintaining the same gentle breeze that has characterized the region since January. This consistency indicates a month where mild winds prevail, providing a refreshing atmosphere as spring unfolds. Interestingly, the wind speed tapers slightly in April before returning to this familiar pace, setting the stage for a transition into the summer months. As temperatures rise in July, the winds gain strength, peaking at an average of 5.1 m/s (11 mph), showcasing a noticeable shift in the seasonal breeze patterns. Overall, May stands out as a harmonious blend of serene winds and spring vibrancy, making it an ideal time for outdoor activities in Hongkou.
Weather in Hongkou varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Hongkou, focusing on differences in temperature, rainfall, humidity, and UV levels.
May and January present vastly different weather conditions. In May, temperatures range from a mild 12°C (53°F) at the minimum to a scorching 34°C (94°F) at the maximum, with an average temperature of 21°C (71°F). During this month, precipitation is relatively high, totaling 117 mm (4.6 inches) over about 10 days, coupled with a humidity level of 87%, creating a warm and humid atmosphere. In contrast, January features much colder temperatures, with a minimum of -8°C (19°F), an average of 6°C (44°F), and a maximum of 22°C (71°F). Precipitation is lower in January, at 55 mm (2.2 inches) over just 6 days, and the humidity is also lower at 70%. For a more detailed look at January weather, you can visit Hongkou weather in January.
In comparing the weather between May and February, it's clear that May experiences significantly warmer temperatures, with a minimum of 12°C (53°F) and an average of 21°C (71°F), peaking at 34°C (94°F). In contrast, February has a much cooler climate, with temperatures ranging from a minimum of -3°C (27°F) to an average of 7°C (45°F) and a maximum of 24°C (76°F). Additionally, May tends to be more humid, averaging 87% compared to February's 73%, and it also receives more precipitation, totaling 117 mm (4.6 in) over 10 days compared to February's 60 mm (2.4 in) over 8 days. For more detailed insights into February's weather, you can visit Hongkou weather in February.
When comparing the weather between March and May, May is significantly warmer, with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 34°C (94°F). In contrast, March experiences much cooler temperatures, with a minimum of 2°C (37°F) and a maximum of 26°C (79°F). Additionally, May sees more considerable precipitation, totaling 117 mm (4.6 in) over 10 days, compared to March's 83 mm (3.3 in) over 12 days. Humidity also rises in May, averaging 87% compared to March's 81%. For more details on March weather specifically, you can visit Hongkou weather in March.
The weather in May shows a noticeable increase in temperature compared to April, with minimums rising from 5°C (42°F) in April to 12°C (53°F) in May. The average temperature in May reaches 21°C (71°F), significantly warmer than April's average of 16°C (61°F), while May also experiences higher maximum temperatures, peaking at 34°C (94°F) compared to April's 31°C (87°F). Additionally, May has more precipitation, totaling 117 mm (4.6 in) over 10 days, compared to April's 72 mm (2.8 in) over 9 days, although both months maintain the same humidity level of 87%. For a closer look at April's weather specifics, visit Hongkou weather in April.
May and June exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 12°C (53°F) to a maximum of 34°C (94°F), with an average of 21°C (71°F) and total precipitation of 117 mm (4.6 in) over 10 days. The humidity sits at a high 87%. In contrast, June brings warmer temperatures, with a minimum of 18°C (65°F) and a peak of 36°C (96°F), averaging 25°C (76°F). Rainfall increases significantly to 201 mm (7.9 in) across 15 days, accompanied by slightly higher humidity at 89%. For a more detailed look at the conditions during this month, check out Hongkou weather in June.
In May, the weather generally sees milder temperatures ranging from a minimum of 12°C (53°F) to a maximum of 34°C (94°F), with an average of 21°C (71°F). The month is relatively wet, experiencing 117 mm (4.6 in) of rainfall over about 10 days, along with a high humidity level of 87%. In contrast, July is significantly warmer, featuring minimum temperatures of 20°C (69°F) and maximum temperatures reaching up to 39°C (102°F), with an average of 29°C (84°F). Rainfall is more frequent in July, totaling around 250 mm (9.8 in) over 16 days, and humidity increases slightly to 93%. For more detailed information on July weather, you can visit Hongkou weather in July.
May and August exhibit notable differences in weather patterns. In May, temperatures range from a minimum of 12°C (53°F) to a maximum of 34°C (94°F), with an average of 21°C (71°F). The month is marked by significant rainfall, totaling 117 mm (4.6 in) over approximately 10 days, and the humidity averages around 87%. In contrast, August sees warmer temperatures, with a minimum of 20°C (69°F), an average of 29°C (85°F), and a peak of 38°C (100°F). Rainfall increases to 167 mm (6.6 in) over about 15 days, and humidity slightly rises to 91%. For more detailed information, you can visit Hongkou weather in August.
May and September both exhibit warm temperatures, but with distinct differences in their weather profiles. In May, temperatures range from a minimum of 12°C (53°F) to a maximum of 34°C (94°F) with an average of 21°C (71°F). The month experiences substantial rainfall, totaling 117 mm (4.6 in) over about 10 days, and the humidity is quite high at 87%. In contrast, September features warmer average temperatures, with a minimum of 17°C (63°F) and a maximum of 35°C (94°F), averaging around 25°C (78°F). Rainfall is more pronounced in September, with 177 mm (7.0 in) of precipitation across 13 days, although humidity is slightly lower at 81%. For more details on the weather specific to September, you can check Hongkou weather in September.
May and October present distinct climatic differences, reflecting the transition from spring to autumn. In May, temperatures generally range from a minimum of 12°C (53°F) to a maximum of 34°C (94°F), with an average of 21°C (71°F). The higher humidity of 87% and significant precipitation of 117 mm (4.6 in) over about 10 days contribute to a lush and vibrant environment. Conversely, October sees slightly cooler temperatures, with a range from 10°C (51°F) to a peak of 31°C (89°F), averaging around 20°C (68°F). The lower humidity of 80% and reduced rainfall of 69 mm (2.7 in) over 7 days signify a drier and more comfortable transition into autumn. For more details about the weather during this month, you can refer to Hongkou weather in October.
May weather tends to be warm and humid, with temperatures ranging from a minimum of 12°C (53°F) to a maximum of 34°C (94°F) and an average of 21°C (71°F). The month also sees significant rainfall, totaling 117 mm (4.6 in) over about 10 days, contributing to a high humidity level of 87%.
In contrast, November brings a cooler climate, with temperatures ranging from a low of 2°C (37°F) to a high of 27°C (81°F) and an average of 15°C (59°F). This month is much drier, with only 51 mm (2.0 in) of precipitation over approximately 7 days, and a slightly lower humidity of 82%.
For more details on November weather, visit Hongkou weather in November.
May and December present stark contrasts in weather conditions. In May, temperatures range from a minimum of 12°C (53°F) to a maximum of 34°C (94°F), boasting an average of 21°C (71°F). The month is characterized by high humidity at 87% and considerable precipitation, with 117 mm (4.6 in) falling over about 10 days. In comparison, December experiences much cooler temperatures, with a minimum of -5°C (22°F) and a maximum of 20°C (69°F), contributing to an average of just 8°C (47°F). Precipitation in December is significantly lower at 50 mm (2.0 in), occurring over 8 days, and humidity also decreases to 77%. For more specific details about December weather, please visit Hongkou weather in December.
As May arrives in Hongkou, the weather transforms into a delightful blend of warmth and humidity, offering a perfect spring transition before the heat of summer fully takes hold. With maximum temperatures reaching up to 34°C (94°F), this month often contrasts with the cooler, more temperate feel of April, while the average temperature settles comfortably around 21°C (71°F). Rainfall also adds to the scenic charm, with around 117 mm (4.6 in) expected over about ten days, creating an inviting atmosphere for both locals and visitors alike. However, the high humidity of 87% can make the air feel quite muggy compared to the drier winter months. If you're keen on discovering more about Hongkou's climate throughout the year, take a look at Hongkou Climate.