May Weather in Kowloon, Hong Kong

Last updated: August 21, 2025

In Kowloon, Hong Kong, May presents a warm and humid atmosphere, with maximum temperatures reaching up to 33°C (92°F) and an average temperature of 26°C (79°F). The climate is characterized by a notable increase in rainfall, totaling 171 mm (6.7 in) over approximately 18 days, creating a lush environment. With humidity levels averaging around 79%, this month is a vibrant transition into summer, making it essential for residents and visitors alike to stay prepared for both the heat and the showers.

May Temperature in Kowloon

In Kowloon, Hong Kong, May marks a significant transition into the warmer months, with temperatures steadily rising. The minimum temperature hovers at a comfortable 18°C (64°F), while the average climbs to a pleasant 26°C (79°F). By daytime, the city can experience maximum readings reaching up to 33°C (92°F), signalling the onset of summer's heat. This shift is notable when compared to the cooler spring months of April, where the average was just 23°C (73°F). As the month progresses, you can expect not only warmer days but also increased humidity, making it the perfect time to explore Kowloon's vibrant streets before the heat peaks in the summer months ahead.

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

The chart illustrates May temperature patterns in Kowloon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kowloon, 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).
JanFebMarAprMayJunJulAugSepOctNovDec636369737983848382787265
Data source: Temperature data for Kowloon 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 Kowloon

In May, Kowloon, Hong Kong, experiences a significant uptick in rainfall, with 171 mm (6.7 in) falling across approximately 18 days. This marks a dramatic increase from the preceding months, as April's precipitation was a mere 93 mm (3.7 in) over 12 days. The transition into May heralds the onset of the wet season, setting the stage for even heavier rains in the coming months. As compared to the early months of the year, where precipitation was relatively sparse, May’s deluge signifies a shift towards a wetter climate, foreshadowing the even more intense rainfall patterns seen in June and August. The robust moisture during May not only enriches the landscape but also enhances the lush vibrancy characteristic of Hong Kong's spring season.

May Precipitation Trends in Kowloon

The chart displays monthly precipitation patterns in Kowloon, 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 Kowloon, May typically receives around {2} mm ({3} inches) of precipitation spread over approximately {4} days.
JanFebMarAprMayJunJulAugSepOctNovDec215260931713252193842231893631
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Kowloon

As the calendar turns to May, Kowloon, Hong Kong, experiences a noticeable rise in humidity, reaching 79%. This uptick marks a transition from the relatively stable conditions of the earlier months—where humidity hovered around the 60s and 70s—to a more pronounced tropical feel that sets the stage for the summer months ahead. Following May, humidity surges further in July and August, peaking at 88%, indicating a trend toward more muggy and oppressive conditions. Overall, the data reveals a gradual increase in humidity from early spring into summer, underscoring the shift towards a distinctly humid atmosphere that characterizes life in Kowloon during this vibrant season.

May Average Humidity in Kowloon

This chart illustrates the average monthly humidity levels in Kowloon, 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 Kowloon is approximately {2}%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec64%68%73%71%79%77%88%88%75%65%64%69%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Kowloon

As the calendar turns to May, Kowloon experiences its most intense UV Index of the year at an extreme 14, which corresponds to a burn time of just 10 minutes. Following a pattern established in April, where the UV Index also peaked at 12, the progression of warmer months brings a notable surge in solar intensity. This signifies a shift from the moderate exposure earlier in the year, with January's UV Index at 7 resulting in a burn time of 25 minutes. As summer approaches, residents and visitors alike must take precautions to protect their skin, as the risk of sunburn becomes critical. For further insights on UV levels throughout the year, check the detailed Kowloon UV Index.

Maximum UV Index Levels in Kowloon for May

The chart shows the monthly maximum UV Index (UVI) for Kowloon 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 Kowloon typically reaches {2}, which falls under the {3} exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710121214131313121197
Data source: Kowloon 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 Kowloon

As spring gracefully transitions into summer, May shines brightly in Kowloon, Hong Kong, boasting an impressive 301 hours of sunshine. This sunny delight marks the peak of a steady climb from January's 216 hours through to April's 263 hours. The sunshine hours in May reflect not only the blossoming season but also hint at the impending warmth of summer, setting the stage for July's peak at 323 hours. Interestingly, while the summer months generally bring more sun, May stands out as a wonderful prelude to the sun-soaked days that follow. This trend of increasing daylight fosters a vibrant atmosphere, encouraging outdoor adventures and enjoying the lively streets of Kowloon.

Monthly Sunshine Duration in Kowloon: May Highlighted

The May sunshine duration represents the total number of hours Kowloon 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.
JanFebMarAprMayJunJulAugSepOctNovDec216h251h274h263h301h274h323h280h288h280h262h264h
Data source: Kowloon May Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Kowloon During May

In Kowloon, Hong Kong, the likelihood of sunny weather experiences a notable drop in May, with only a 30% chance of sunshine. This trend marks a stark contrast to the earlier months, where January and February boast much higher probabilities of 61% and 60%, respectively. As spring transitions into summer, April and May showcase a steady decline in sunny days, reflecting the encroaching summer humidity. Interestingly, from May onwards, the chance of sunny weather fluctuates, dipping even further in June to just 12%. Therefore, while May may offer a few sunny breaks amidst impending rains, it clearly signals the shift towards a more overcast summer season.

Percentage of Sunny Days in May in Kowloon

The chart illustrates the percentage of sunny days in Kowloon 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 Kowloon experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec61%60%43%42%30%12%31%15%45%36%62%50%
Data source: Kowloon May chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Kowloon in May

In Kowloon, Hong Kong, the month of May marks a rewarding transition as daylight reaches an inviting 13 hours. Following the gradual increase from 10 hours in January, daylight steadily expands, peaking in the late spring and early summer months. After holding steady at 12 hours in March and April, May embraces longer days, a trend that continues through June and July. As summer winds down, daylight begins to taper off again, settling back at 12 hours in August before gradually reducing to 11 hours come November. This yearly cycle showcases the region's abundant sunlight, creating an engaging atmosphere for both locals and visitors alike during the vibrant month of May.

Average Daylight Hours in Kowloon for May

The chart illustrates the variation in daylight duration in Kowloon throughout the year, with May highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 55m11h 23m12h 1m12h 39m13h 11m13h 27m13h 19m12h 51m12h 14m11h 36m11h 3m10h 46m
Data source: Kowloon daylight hours, calculated by summing the hours between sunrise and sunset for each day.

May Winds in Kowloon

In Kowloon, Hong Kong, the winds shift subtly throughout the year, revealing a fascinating seasonal pattern. May experiences a gentle breeze, with an average wind speed of 3.7 m/s (8 mph), marking the lowest point in the annual cycle. As the city transitions from the cooler months of winter and spring, where winds are brisker—peaking at 5.1 m/s (11 mph) in January—May serves as a calm before the more blustery autumn, which sees speeds rise again, notably hitting 6.4 m/s (14 mph) in October. This gentle May breeze is a refreshing respite, paving the way for the warmer summer days ahead, while setting the stage for the refreshing winds that dominate in late fall.

Average May Wind Speed in Kowloon

The chart displays monthly wind speed patterns in Kowloon, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.14.44.74.63.7 m/s4.23.83.43.26.44.95.6
Data source: Kowloon May wind data, generated using information from the Copernicus Climate Change Service.

How May Weather in Kowloon Compares to Other Months

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

May and January present stark contrasts in weather patterns. In May, temperatures range from a minimum of 18°C (64°F) to a maximum of 33°C (92°F), averaging around 26°C (79°F). This month is marked by significant rainfall, totaling 171 mm (6.7 in) over 18 days, accompanied by a high humidity level of 79%. In contrast, January offers much cooler weather, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 24°C (75°F) and averaging 17°C (63°F). Precipitation is minimal in January, averaging only 21 mm (0.8 in) across just 4 days, and the humidity is lower at 64%. For a detailed view of January's weather conditions, check out Kowloon weather in January.

In comparing the weather of May and February, May boasts significantly warmer temperatures, with averages around 26°C (79°F) and highs reaching up to 33°C (92°F). In contrast, February experiences cooler conditions, with an average temperature of 17°C (64°F) and a maximum of 24°C (76°F). Precipitation also varies greatly between the two months; May sees about 171 mm (6.7 in) over 18 days, whereas February has a much lighter rain total of 52 mm (2.0 in) spread across just 7 days. Additionally, humidity levels are higher in May at 79%, compared to 68% in February. For more detailed insights on February weather, you can visit Kowloon weather in February.

In comparing the weather between March and May, it's clear that May is significantly warmer and wetter. The average temperature in May is 26°C (79°F), with maximums reaching up to 33°C (92°F), compared to March's average of 21°C (70°F) and maximum of 27°C (80°F). Additionally, May experiences nearly three times the amount of rainfall, with 171 mm (6.7 in) over 18 days, while March sees just 60 mm (2.4 in) across 10 days. Humidity levels also rise in May, averaging 79% compared to March's 73%. For more detailed information about March weather, you can visit Kowloon weather in March.

May generally experiences warmer temperatures compared to April, with average daily highs reaching up to 33°C (92°F) compared to April's maximum of 29°C (85°F). The minimum temperature in May is also higher, starting at 18°C (64°F) versus April’s 14°C (58°F). In terms of precipitation, May is considerably wetter, receiving 171 mm (6.7 in) over 18 days, while April sees just 93 mm (3.7 in) across 12 days. The humidity levels also rise in May, averaging 79% compared to 71% in April. For more details on April weather in Kowloon, check Kowloon weather in April.

In comparing the weather of May and June, we see a clear increase in minimum temperatures, with June starting at 24°C (76°F) compared to May's 18°C (64°F). However, both months have similar maximum temperatures, peaking at around 33°C (91°F to 92°F). June experiences significantly higher precipitation, totaling 325 mm (12.8 in) over 24 days, in contrast to May's 171 mm (6.7 in) over 18 days. Additionally, humidity remains relatively consistent, with May at 79% and June slightly lower at 77%. For more detailed information, check out this link: Kowloon weather in June.

In May, temperatures range from a mild 18°C (64°F) to a warm 33°C (92°F), with an average of 26°C (79°F). However, the month sees significant rainfall, averaging 171 mm (6.7 in) over 18 days and a humidity level of 79%. In contrast, July brings higher minimum temperatures, starting at 25°C (78°F) and averaging at 29°C (84°F), while still peaking at a maximum of 33°C (92°F). July is also wetter, with 219 mm (8.6 in) of precipitation over 24 days and a higher humidity level of 88%. For a more detailed look at the weather patterns, you can check Kowloon weather in July.

In comparing the weather between May and August, it is evident that August tends to be warmer and more humid. May sees temperatures ranging from a minimum of 18°C to a maximum of 33°C, with an average of 26°C. This month also experiences significant rainfall, with 171 mm falling over 18 days and a humidity level of 79%. In contrast, August's temperatures are higher, with a minimum of 26°C and a maximum of 34°C, averaging around 28°C. This month has even more precipitation, totaling 384 mm over 25 days, accompanied by increased humidity at 88%. For more detailed information, you can check Kowloon weather in August.

In comparing the weather of May and September, May tends to be slightly cooler, with average temperatures ranging from a minimum of 18°C (64°F) to a maximum of 33°C (92°F), while September has warmer averages, with minimums around 24°C (76°F) and maximums peaking at 32°C (91°F). However, September experiences more precipitation, with an average rainfall of 223 mm (8.8 in) over 22 days compared to May's 171 mm (6.7 in) over 18 days. Interestingly, humidity levels are quite similar, with May at 79% and September slightly lower at 75%. For more details, check out Kowloon weather in September.

May and October in Kowloon present a notable contrast in weather patterns. In May, temperatures range from a minimum of 18°C (64°F) to a maximum of 33°C (92°F), with an average of about 26°C (79°F). The month sees significant rainfall, accumulating around 171 mm (6.7 in) over 18 days, coupled with high humidity levels at 79%.

In contrast, October features slightly cooler weather, with temperatures ranging from a minimum of 17°C (64°F) to a maximum of 32°C (91°F), while maintaining a similar average temperature of 26°C (78°F). The precipitation increases to 189 mm (7.4 in) but occurs over just 10 days, resulting in lower humidity at 65%. This unique combination makes October a more comfortable month compared to the sultriness of May. For more specific details, you can check the Kowloon weather in October.

May and November present contrasting weather patterns, with May characterized by warmer temperatures and higher humidity levels. In May, temperatures range from a minimum of 18°C (64°F) to a maximum of 33°C (92°F), accompanied by significant rainfall of 171 mm (6.7 in) over 18 days, resulting in a humidity level of 79%. In contrast, November offers a cooler climate, with temperatures ranging from 16°C (60°F) to 28°C (82°F). Rainfall is minimal, totaling just 36 mm (1.4 in) over only 4 days, and humidity decreases to 64%. For a detailed look at November weather, you can check Kowloon weather in November.

In comparing the weather between May and December, significant differences emerge. May experiences much warmer temperatures, with a minimum of 18°C (64°F) and an average high of 33°C (92°F), while December sees cooler temperatures, ranging from a minimum of 10°C (49°F) to a maximum of 26°C (78°F). Additionally, May is characterized by higher humidity at 79% and more precipitation, totaling 171 mm (6.7 in) over 18 days, compared to December's much lower rainfall of 31 mm (1.2 in) across just 4 days and a humidity level of 69%. For more detailed information on December weather, you can check Kowloon weather in December.

Compare Kowloon's Climate with Cities Worldwide

Conclusion: What to Expect From May Weather in Kowloon

As May unfolds in Kowloon, the weather transforms into a balmy prelude to summer, showcasing a significant shift from the cooler months. With average temperatures hovering around 26°C and peaks reaching up to 33°C, the warmth beckons both locals and tourists to enjoy the vibrant outdoor scenes. However, this month also brings an increase in humidity, creating a lush atmosphere that complements the frequent rains—averaging 18 precipitation days. In contrast to the dry winters, May's blend of warmth and moisture sets the stage for an invigorating experience. For a more detailed look at Kowloon’s climate, visit Kowloon Climate.