Yearly & Monthly weather - Hong Kong, Hong Kong

The lit city of Hong Kong, on the Hong Kong Island

The climate of Hong Kong

Under the Köppen climate classification, Hong Kong is described as having a humid subtropical climate with a notable season of dry winter. This south-eastern city has a latitude that places it within the tropics; therefore it experiences considerable amounts of heat and precipitation throughout the year.

Precipitation fluctuates remarkably across different months, with the peak occurring between May and September, while the minimum levels are experienced from November to January. Annual rainfall ranges from 25mm (0.98") in January to as high as 456mm (17.95") in June. The number of days with rainfall also follows this trend, January has only an average of 5.4 days of rainfall, while June has up to 19.1 days.

Relative humidity in Hong Kong persists at generally high levels throughout the year, between 69% and 83%, maintaining a humid environment regardless of the season. Temperature fluctuations are notable, with the lowest average minimum temperature being 14.5°C (58.1°F) in January and the highest average maximum temperature peaking at 31.4°C (88.5°F) in July. Regarding sunlight, the average daylight hours span from 10.8 hours in December to 13.5 hours in June. Nevertheless, sunshine hours range between 2.9 hours in March and 6.8 hours in July. The UV index fluctuates from 7 in the less sunny months to 12 during the sunnier period, indicating a very high risk of harm from unprotected sun exposure.

The best time to visit Hong Kong

The optimal time to visit Hong Kong is dictated by the visitor's weather preference. For those who favor mild temperatures, it is advisable to consider the period between October and December. During these months, temperature ranges from 20.2°C (68.4°F) to 27.8°C (82°F), and the rainfall is relatively low, averaging between 27mm (1.06") to 101mm (3.98"). The number of rainfall days is also fewer, averaging between 4.5 and 7.4 days.

The worst time to visit Hong Kong

The months to be avoided for a visit to Hong Kong largely depend on one's tolerance for high rainfall levels, tropical storm risks, and hot temperatures. These conditions are common during the summer monsoon season between May and September. This period experiences heavy rains, with monthly rainfall averages ranging from 305mm (12.01") and 456mm (17.95"). The temperature during this time is relatively high, ranging from 25°C (77°F) to 31.4°C (88.5°F) which can make the weather uncomfortably humid.

Spring weather in Hong Kong

The spring in Hong Kong, which occurs between February and April, is distinguished by gradually warming temperatures along with a consistent rise in humidity and precipitation. Average high temperatures during this period range from 18.9°C (66°F) in February to 25°C (77°F) in April, while average low temperatures increase from 15°C (59°F) to 20.8°C (69.4°F). This period also marks the start of the rainy season with an increase in monthly average rainfall from 54mm (2.13") in February to 175mm (6.89") in April.

Summer weather in Hong Kong

Summer in Hong Kong, from May to August, is marked by hot, humid, and rainy conditions due to the monsoon influence. The high temperature averages from 28.4°C (83.1°F) to 31.4°C (88.5°F), and the low averages 24.1°C (75.4°F) to 26.8°C (80.2°F). This season is characterized by the highest amount of rainfall, with the heaviest precipitation seen in June at 456mm (17.95"). The month of August is particularly notable because of the high temperature and humidity combined with high levels of rainfall, a total of 432mm (17.01") on average.

Autumn weather in Hong Kong

The autumn months, September to November, represent relief from the sweltering summer heat. The high temperature averages decrease from 30.1°C (86.2°F) in September to 24.1°C (75.4°F) in November, while the low averages similarly decrease from 25.8°C (78.4°F) to 19.8°C (67.6°F). Even though the first autumn month experiences substantial rainfall, the remaining months witness a significant reduction, with only 38mm (1.5") in November.

Winter weather in Hong Kong

Winter in Hong Kong, spanning December and January, is typically marked by cooler and drier conditions. While the average high temperature drops to 18.6°C (65.5°F) by January, the lowest average drops to 14.5°C (58.1°F). With a range of 25mm (0.98") to 27mm (1.06"), rainfall stays relatively low, contributing to the characteristic dry winter. December sees the fewest daylight hours of the year, averaging 10.8 hours. However, sunshine duration increases to 5.6 hours.

Weather in January

Taking into account the variation in the weather parameters of Hong Kong, the start of a new year is characterized by mild daily temperatures. The average high in January hovers at about 18.6°C (65.5°F), making it one of the cooler months. Weather in January »

Weather in February

With the arrival of February, an uptick in the overall humidity levels is registered. The gradual warming trend leads to a slight increase in the average temperature from January to February. However, it is the increased precipitation, marked by a substantial leap from 25mm (0.98") to 54mm (2.13") that distinguishes this month. Weather in February »

Weather in March

March brings along the transition from winter to spring in Hong Kong. A discernible change in the weather pattern is perceived through longer daylight hours and a rise in the daily temperature. Despite the higher daily temperatures, nocturnal conditions retain a certain level of coolness. Weather in March »

Weather in April

April signifies the onset of a significantly warmer phase in Hong Kong’s annual weather cycle. Alongside the noticeable warmth, the levels of precipitation experience a steep surge taking a jump from 82mm (3.23") in March to a substantial 175mm (6.89"). Weather in April »

Weather in May

As May introduces the early phase of summer, the city of Hong Kong gears up for prolonged sunshine and increased heat. The characteristic traits of May include longer daylight hours and a significant rise in both daily and nightly temperatures. Weather in May »

Weather in June

June in Hong Kong signals the full arrival of the hot summer season. Marked by longer daylight hours and higher temperatures, the weather takes on the distinct characteristics of tropical summer. The striking feature of June is the maximum rainfall recorded for any month, peaking at a staggering 456mm (17.95"). Weather in June »

Weather in July

The middle of the year in Hong Kong observes the peak of summer with July being one of the hottest months. Throughout the month, the city experiences an increased duration of daylight and high nocturnal temperatures. However, it isn’t all clear skies and sunshine. Weather in July »

Weather in August

August in Hong Kong carries the essence of summer warmth and high humidity. As the city navigates through this tropical month, the daily temperatures oscillate between moderately hot to high levels. One can also observe an uptick in the levels of rainfall recorded. Weather in August »

Weather in September

With the onset of September, Hong Kong begins to witness a noticeable retraction from the extreme summer conditions. Although the arrival of autumn is greeted with much-needed relief from the sweltering heat, the weather predominantly remains warm. Weather in September »

Weather in October

October marks a distinct tempering of Hong Kong’s weather conditions. A visible drop in temperature and humidity denotes the commencement of the autumn season. With rainfall levels significantly reduced to 101mm (3.98"), the climatic conditions are markedly drier than the preceding months. Weather in October »

Weather in November

The weather in Hong Kong in November is characterized by the declining intensity of sunlight and a notch down in rainfall activity. The decreased rainfall amount of 38mm (1.5") favors more predictable weather and less cloudy skies. Weather in November »

Weather in December

Concluding the year, December depicts the onset of winter in Hong Kong. Although devoid of snowfall, the city sees a drop in temperature, an increase in relative humidity than November, and a significant reduction in rainfall to just 27mm (1.06"). Weather in December »

Updated: Feb 19, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Hong Kong?

Hong Kong records the coldest temperatures in January, averaging a high of 18.6°C (65.5°F) and a low of 14.5°C (58.1°F).

What is the driest month in Hong Kong?

January is the month with the least rainfall. Rain falls for 5.4 days and accumulates 25mm (0.98") of precipitation.

How many days does it rain in Hong Kong?

Throughout the year, in Hong Kong, there are 137.8 rainfall days, and 2398mm (94.41") of precipitation is accumulated.

What are the months with the lowest UV index in Hong Kong?

The months with the lowest UV index in Hong Kong, Hong Kong, are January, November and December, with an average maximum UV index of 7.

What is the month with the coldest sea water in Hong Kong?

The month with the coldest seawater in Hong Kong, Hong Kong, is February, with an average sea temperature of 18.9°C (66°F).

What is the month with the least sunshine in Hong Kong?

With an average of 2.9h of sunshine, March has the least sunshine of the year.

What are the most humid months in Hong Kong?

April and May, with an average relative humidity of 83%, are most humid months.

When is the highest UV index in Hong Kong?

The months with the highest UV index in Hong Kong are April through August, with an average maximum UV index of 12.

What is the wettest month in Hong Kong?

The month with the most rainfall in Hong Kong, Hong Kong, is June, when the rain falls for 19.1 days and typically aggregates up to 456mm (17.95") of precipitation.

When are the longest days in Hong Kong?

With an average of 13h and 30min of daylight, June has the longest days of the year.

What part of the year is the hottest in Hong Kong?

With average high and low temperatures of 31.4°C (88.5°F) and 26.8°C (80.2°F) respectively, July is Hong Kong's warmest month.

When is the sea warmest in Hong Kong?

The month with the warmest seawater in Hong Kong, Hong Kong, is July, with an average sea temperature of 29.1°C (84.4°F).

What month has the most sunshine in Hong Kong?

With an average of 6.8h of sunshine, July has the most sunshine of the year.

What is the least humid month in Hong Kong?

With an average relative humidity of 69%, December is the least humid month in Hong Kong, Hong Kong.

What is the month with the shortest days in Hong Kong?

The month with the shortest days in Hong Kong is December, with an average of 10h and 48min of daylight.

Is there Daylight Saving Time (DST) in Hong Kong?

Hong Kong does not utilize Daylight Saving Time (DST). HKT timezone is used throughout the entire year.

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Long-term

Year J F M A M J J A S O N D

Average temperature
Hong Kong, Hong Kong

Average high temperature in January:
18.6°C
Average high temperature in February:
18.9°C
Average high temperature in March:
21.4°C
Average high temperature in April:
25°C
Average high temperature in May:
28.4°C
Average high temperature in June:
30.2°C

Average high temperature in July:
31.4°C
Average high temperature in August:
31.1°C
Average high temperature in September:
30.1°C
Average high temperature in October:
27.8°C
Average high temperature in November:
24.1°C
Average high temperature in December:
20.2°C

The warmest month (with the highest average high temperature) is July (31.4°C).
The month with the lowest average high temperature is January (18.6°C).

Average low temperature in January:
14.5°C
Average low temperature in February:
15°C
Average low temperature in March:
17.2°C
Average low temperature in April:
20.8°C
Average low temperature in May:
24.1°C
Average low temperature in June:
26.2°C

Average low temperature in July:
26.8°C
Average low temperature in August:
26.6°C
Average low temperature in September:
25.8°C
Average low temperature in October:
23.7°C
Average low temperature in November:
19.8°C
Average low temperature in December:
15.9°C

The month with the highest average low temperature is July (26.8°C).
The coldest month (with the lowest average low temperature) is January (14.5°C).

Average humidity
Hong Kong, Hong Kong

The months with the highest relative humidity are April and May (83%).
The month with the lowest relative humidity is December (69%).

Average rainfall
Hong Kong, Hong Kong

The wettest month (with the highest rainfall) is June (456.1mm).
The driest month (with the least rainfall) is January (24.7mm).

Average rainfall days
Hong Kong, Hong Kong

Average rainfall days in January:
5.4 days
Average rainfall days in February:
9.1 days
Average rainfall days in March:
10.9 days
Average rainfall days in April:
12 days
Average rainfall days in May:
14.7 days
Average rainfall days in June:
19.1 days

Average rainfall days in July:
17.6 days
Average rainfall days in August:
16.9 days
Average rainfall days in September:
14.7 days
Average rainfall days in October:
7.4 days
Average rainfall days in November:
5.5 days
Average rainfall days in December:
4.5 days

The month with the highest number of rainy days is June (19.1 days).
The month with the least rainy days is December (4.5 days).

Average sea temperature
Hong Kong, Hong Kong

Average sea temperature in January:
19.1°C
Average sea temperature in February:
18.9°C
Average sea temperature in March:
20.2°C
Average sea temperature in April:
22.8°C
Average sea temperature in May:
26.8°C
Average sea temperature in June:
28.4°C

Average sea temperature in July:
29.1°C
Average sea temperature in August:
28.7°C
Average sea temperature in September:
28.3°C
Average sea temperature in October:
26.5°C
Average sea temperature in November:
24.3°C
Average sea temperature in December:
21°C

The best month for swimming (with the highest average sea temperature) is July (29.1°C).
The coldest month (with the lowest average sea temperature) is February (18.9°C).

Average daylight / Average sunshine
Hong Kong, Hong Kong

Average daylight in January:
10h and 5min
Average daylight in February:
11h and 2min
Average daylight in March:
12h and 0min
Average daylight in April:
12h and 4min
Average daylight in May:
13h and 1min
Average daylight in June:
13h and 3min

Average daylight in July:
13h and 2min
Average daylight in August:
12h and 5min
Average daylight in September:
12h and 2min
Average daylight in October:
11h and 4min
Average daylight in November:
11h and 1min
Average daylight in December:
10h and 5min

The month with the longest days is June (Average daylight: 13h and 30min).
The month with the shortest days is December (Average daylight: 10h and 48min).

Average sunshine in January:
4h and 4min
Average sunshine in February:
3h and 2min
Average sunshine in March:
2h and 5min
Average sunshine in April:
3h and 2min
Average sunshine in May:
4h and 3min
Average sunshine in June:
4h and 5min

Average sunshine in July:
6h and 5min
Average sunshine in August:
6h and 1min
Average sunshine in September:
5h and 4min
Average sunshine in October:
6h and 2min
Average sunshine in November:
6h and 0min
Average sunshine in December:
5h and 4min

The month with the most sunshine is July (Average sunshine: 6h and 48min).
The month with the least sunshine is March (Average sunshine: 2h and 54min).

Average UV index
Hong Kong, Hong Kong

The months with the highest UV index are April, May, June, July and August (UV index 12).
The months with the lowest UV index are January, November and December (UV index 7).

Climate and monthly weather forecastHong Kong, Hong Kong

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