May Weather in Dalian, China

Last updated: August 21, 2025

In Dalian, China, May welcomes warmer temperatures, showcasing a maximum of 27°C (82°F), an average of 22°C (72°F), and a minimum of 17°C (62°F). This month experiences an increased chance of rain, with precipitation totaling 133 mm (5.2 in) across approximately 12 days. The humidity, hovering around 85%, adds a tropical feel to the coastal city. As spring transitions into summer, Dalian’s weather presents a delightful blend of warmth and occasional showers, perfect for both outdoor adventures and city explorations.

May Temperature in Dalian

As May arrives in Dalian, China, the city begins to warm up significantly, marking a clear transition into the vibrant summer months. With minimum temperatures rising to 17°C (62°F) and averages peaking at 22°C (72°F), the changes signal an inviting atmosphere, perfect for outdoor activities. Daytime highs can reach up to 27°C (82°F), providing a comfortable climate for exploring the coast or enjoying local festivals. Compared to the cooler spring months, May's temperatures reflect a delightful warmth that captures the essence of a blossoming season, drawing both locals and visitors out into the sun-drenched streets and scenic vistas.

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

The chart illustrates May temperature patterns in Dalian, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dalian, 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).
JanFebMarAprMayJunJulAugSepOctNovDec555458647278828281746759
Data source: Temperature data for Dalian generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Dalian

In May, Dalian experiences a notable surge in precipitation, receiving 133 mm (5.2 in) of rainfall across 12 days. This increase follows a relatively wet April and sets the stage for an even wetter June. The month of May marks the beginning of a transition, where the average rainfall peaks before the summer months, highlighting a trend of increasing precipitation that starts in the spring and leads into the summer monsoon season. With the lush greenery and vibrant landscapes that result from these rains, May serves as a pivotal month, balancing abundant water with more manageable rainfall days compared to the torrential downpours that characterize June.

May Precipitation Trends in Dalian

The chart displays monthly precipitation patterns in Dalian, 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 Dalian, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec58811289413326653204102988366
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Dalian

As the calendar turns to May, Dalian, China, experiences a noticeable rise in humidity, peaking at an impressive 85%. This increase marks a transition from the mildly humid conditions of the earlier months, with January and February both holding steady at 73%, to the much more humid spring season. The gradual climb from 80% in March and 81% in April signals the approach of summer, where humidity levels will remain elevated. Interestingly, the following months, June and July, see a slight dip to 81% and a rise to 84%, respectively, suggesting a pattern of fluctuating humidity during the warmer months. Overall, it’s evident that May acts as a bridge to the sultry summer ahead, setting the stage for Dalian's unique climate.

May Average Humidity in Dalian

This chart illustrates the average monthly humidity levels in Dalian, 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 Dalian is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%73%80%81%85%81%84%83%70%73%77%79%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Dalian

As May arrives in Dalian, China, the UV Index remains at a striking 12, indicating an extreme level of sun exposure associated with a burn time of just 10 minutes. This consistency in high UV levels, which began in March and extends through June, signals a trend where residents and visitors alike must be vigilant about sun protection during this period. With April and May displaying the same extremes, it's clear that these months demand a proactive approach to avoid harmful effects from the sun. As the warm season unfolds, staying informed and prepared is essential for enjoying Dalian's sunny days safely. For more detailed insights, visit Dalian UV Index.

Maximum UV Index Levels in Dalian for May

The chart shows the monthly maximum UV Index (UVI) for Dalian 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 Dalian typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec7911121213131311986
Data source: Dalian 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 Dalian

As May unfolds in Dalian, China, the city basks in an impressive 297 hours of sunshine, marking a peak in the gradual upward trend of daylight hours since the beginning of the year. Following the colder months, where sunshine hovered around 188 hours in January, each subsequent month has seen a steady increase, culminating in the vibrant days of late spring. Notably, April’s 274 hours provided a delightful precursor to May's sunny splendor, propelling residents into a season that thrives on sunshine. This warmth and light not only elevate spirits but also set the stage for the lively summer months ahead, when July reaches a dazzling 331 hours of sunshine, continuing to reflect Dalian’s dynamic climate and its ability to shine brightly through the year.

Monthly Sunshine Duration in Dalian: May Highlighted

The May sunshine duration represents the total number of hours Dalian 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.
JanFebMarAprMayJunJulAugSepOctNovDec188h232h272h274h297h260h331h312h294h265h228h215h
Data source: Dalian May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Dalian During May

In Dalian, China, the likelihood of sunny weather takes a notable dip in May, with only a 16% chance of sunshine gracing the month. This marks a significant decline from the sunnier start of the year, as January enjoys a 53% likelihood, gradually tapering off in subsequent months. After April's 32%, May heads into the less favorable territory of late spring, suggesting a transition to rainier conditions ahead. As summer approaches, June drops further to a mere 6%, making May one of the last opportunities to relish the sun before the clouds dominate the season. Observably, this pattern reinforces the importance of planning outdoor activities thoughtfully, with the best chances for sunshine receding until September’s 58% boost.

Percentage of Sunny Days in May in Dalian

The chart illustrates the percentage of sunny days in Dalian 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 Dalian experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec53%49%41%32%16%6%29%26%58%31%33%33%
Data source: Dalian May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Dalian in May

As spring transitions into summer in Dalian, China, daylight duration reaches its peak in May, offering 13 hours of vibrant sunlight. This month marks a gradual increase from 10 hours in January, with notable growth occurring from February through April. The shift is particularly striking as March and April both enjoy 12 hours of daylight, signaling an awakening of nature and warmer days ahead. Following May, daylight remains steady at 13 hours in June and July before gradually tapering off in the late summer and autumn months. As the year progresses into September and October, daylight diminishes to 12 hours, then 11 hours, returning to the shorter days of winter by November and December. Overall, Dalian's daylight pattern showcases a delightful balance of light throughout the year, enhancing the experience of its changing seasons.

Average Daylight Hours in Dalian for May

The chart illustrates the variation in daylight duration in Dalian throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 43m11h 16m12h12h 45m13h 23m13h 41m13h 32m12h 59m12h 16m11h 31m10h 53m10h 33m
Data source: Dalian daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Dalian

In May, Dalian experiences a gentle breeze with an average wind speed of 6.2 m/s (14 mph), marking a slight decrease compared to the spring months that precede it. This seasonal shift suggests a calming trend as winter recedes, transitioning to the warmth of summer. April had a brisker pace at 7.5 m/s (17 mph), while the wind speeds will gradually increase again into the summer months. Notably, October often sees the strongest gusts of the year at 10.2 m/s (23 mph), underscoring the region's dynamic climate. Overall, May’s milder winds provide a refreshing contrast to the stronger breezes of prior months, making it an ideal time to enjoy the scenic beauty of Dalian.

Average May Wind Speed in Dalian

The chart displays monthly wind speed patterns in Dalian, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8.77.36.67.56.2 m/s6.87.36.45.510.28.59.5
Data source: Dalian May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Dalian Compares to Other Months

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

In comparing the weather of May and January, it's evident that May offers a significantly warmer climate. The average temperature in May reaches a comfortable 22°C (72°F), with highs typically around 27°C (82°F), while January is much cooler, averaging just 13°C (55°F) and peaking at 18°C (65°F). Additionally, May experiences higher humidity levels at 85%, leading to a more tropical feel, compared to January's 73%. Precipitation is also more pronounced in May, with 133 mm (5.2 in) spread over 12 days, compared to January's milder conditions, which see 58 mm (2.3 in) over only 8 days. For more specific details about January weather, you can check Dalian weather in January.

May and February exhibit striking differences in their weather patterns. In May, temperatures range from a mild 17°C (62°F) to a warm 27°C (82°F), with an average of 22°C (72°F), while February experiences much cooler conditions, with temperatures between 7°C (44°F) and 17°C (63°F), averaging just 12°C (54°F). Additionally, May is characterized by higher precipitation at 133 mm (5.2 in) over about 12 days, compared to February’s 81 mm (3.2 in) over 10 days. The humidity is also notably higher in May at 85%, compared to February’s 73%. For more detailed information on February weather, you can visit Dalian weather in February.

In comparing the weather between March and May, we observe a significant shift in temperatures and overall climate. March typically experiences cooler temperatures, with a minimum of 10°C (50°F) and an average of 14°C (58°F), while May warms up considerably, showcasing a minimum of 17°C (62°F) and an average of 22°C (72°F). Precipitation levels are relatively similar, with March receiving 128 mm (5.0 in) over 14 days and May slightly higher at 133 mm (5.2 in) but over just 12 days. Humidity also rises a bit in May, reaching 85% compared to March's 80%. For a more detailed look at March weather conditions, you can visit Dalian weather in March.

In comparing the weather of May and April, May tends to be warmer with an average temperature of 22°C (72°F), compared to April's average of 18°C (64°F). The maximum temperature in May reaches 27°C (82°F), while April's peak is 24°C (75°F). However, May also brings more precipitation, with 133 mm (5.2 in) over 12 days, compared to April's 93 mm (3.7 in) over 11 days. Additionally, May enjoys slightly higher humidity at 85%, while April has a humidity level of 81%. For a detailed look at April's climate specifics, you can visit Dalian weather in April.

May and June exhibit noticeable differences in weather patterns. In May, temperatures range from a minimum of 17°C (62°F) to a maximum of 27°C (82°F), with an average temperature of 22°C (72°F). The month is characterized by significant rainfall, totaling 133 mm (5.2 in) over 12 days, and a high humidity level of 85%. In contrast, June sees warmer temperatures, with a minimum of 22°C (72°F) and an average high of 29°C (84°F), averaging 26°C (79°F). However, it is also a wetter month, receiving 266 mm (10.5 in) of precipitation spread across 14 days, while humidity slightly decreases to 81%. For a more detailed overview, you can check Dalian weather in June.

In May, the weather is characterized by a mild range of temperatures, with the minimum reaching 17°C (62°F) and a maximum of 27°C (82°F), resulting in an average temperature of 22°C (72°F). However, it is also a wetter month, with precipitation totaling 133 mm (5.2 in) over 12 days and high humidity at 85%. In contrast, July sees considerably warmer temperatures, with a minimum of 25°C (78°F) and a maximum of 30°C (87°F), averaging around 28°C (82°F). The summer month is drier, with only 53 mm (2.1 in) of precipitation across 5 days, and humidity remains relatively stable at 84%. For more on July weather, check out Dalian weather in July.

May and August present quite distinct weather patterns. In May, temperatures range from a mild 17°C (62°F) to a pleasant 27°C (82°F), with an average of 22°C (72°F). However, it also brings considerable rainfall, with 133 mm (5.2 in) over about 12 days and a humidity level of 85%. In contrast, August is warmer, with minimum temperatures starting at 25°C (78°F) and peaking at 31°C (88°F), averaging 28°C (83°F). The month experiences even more rainfall at 204 mm (8.0 in) over approximately 16 days, accompanied by slightly lower humidity at 82%. For a detailed look at the weather in August, you can check out Dalian weather in August.

May and September present distinct weather patterns. In May, temperatures start relatively mild with a minimum of 17°C (62°F) and reach a maximum of 27°C (82°F), averaging around 22°C (72°F). This month experiences a significant amount of rainfall, with 133 mm (5.2 in) over about 12 days, coupled with high humidity at 85%. In contrast, September is warmer, with minimum temperatures of 22°C (72°F) and maximums reaching 30°C (86°F), averaging 27°C (81°F). Precipitation decreases to 102 mm (4.0 in), spread over about 15 days, while humidity is lower at 70%. The transition from May to September illustrates a shift toward warmer and drier conditions. For more information about September weather specifically, you can check Dalian weather in September.

May and October both enjoy mild temperatures, but October tends to be slightly warmer overall. In May, the average temperature sits at about 22°C (72°F), while in October, it rises to an average of 23°C (75°F). Despite October having a higher minimum temperature of 18°C (64°F) compared to May's 17°C (62°F), May experiences more precipitation with 133 mm (5.2 in) over 12 days, whereas October sees 98 mm (3.9 in) across 14 days. Additionally, the humidity is higher in May at 85%, while October offers a more comfortable 73%. For more detailed information about October weather, you can visit Dalian weather in October.

In comparing the weather between May and November, May tends to be warmer and more humid. With temperatures ranging from a minimum of 17°C (62°F) to a maximum of 27°C (82°F), the average temperature reaches around 22°C (72°F). In contrast, November experiences cooler temperatures, with a minimum of 13°C (56°F) and a maximum of 23°C (74°F), averaging 19°C (67°F). Additionally, May sees higher precipitation levels at 133 mm (5.2 in) over 12 days, while November has 83 mm (3.3 in) of rain, also over 12 days. The humidity is also higher in May at 85%, compared to 77% in November. For more detailed information, check Dalian weather in November.

In May, the weather is generally warm and humid, with temperatures ranging from a minimum of 17°C (62°F) to a maximum of 27°C (82°F) and an average of 22°C (72°F). This month experiences substantial rainfall, totaling 133 mm (5.2 in) across approximately 12 days, and humidity levels are high at 85%. In contrast, December brings cooler temperatures, with a minimum of 8°C (47°F), an average of 15°C (59°F), and a maximum of 20°C (68°F). Precipitation is significantly lower in December, with 66 mm (2.6 in) over about 11 days, and humidity is somewhat reduced at 79%. For a more detailed look at December weather specifics, check out Dalian weather in December.

Compare Dalian's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Dalian

As spring transitions to summer, May in Dalian brings a delightful increase in warmth and vibrancy compared to the cooler months preceding it. With average temperatures hovering around a pleasant 22°C, residents and visitors alike can enjoy more outdoor activities under the sun. However, the month is also marked by a notable amount of precipitation, with rain gracing the city on about 12 days, contributing to a humidity level of 85%. This blend of warmth and moisture creates a lush atmosphere, setting the stage for the summer ahead. For more insights into the year-round climate and weather nuances, explore Dalian Climate.