October weather forecast
Hong Kong, Hong Kong

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. The abundant sunshine, coupled with the milder temperatures of the month, paints an inviting picture for sightseeing and outdoor activities. As the city transitions from summer to autumn, October allows residents and tourists to enjoy the resplendent beauty of Hong Kong under a comfortable weather umbrella.

Temperature

Hong Kong starts October with an average high-temperature of a moderately hot 27.8°C (82°F), a minor shift from September's 30.1°C (86.2°F). October sees a slight dip to an average low temperature of 23.7°C (74.7°F) from the daytime highs.

Heat index

Throughout October, the heat index is calculated to be a tropical 31°C (87.8°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Given the heat index, its values are aligned with shaded sites and gentle winds. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.

Humidity

The average relative humidity in October in Hong Kong is 73%.

Rainfall

In Hong Kong, during October, the rain falls for 7.4 days and regularly aggregates up to 101mm (3.98") of precipitation. In Hong Kong, during the entire year, the rain falls for 137.8 days and collects up to 2398mm (94.41") of precipitation.

Sea temperature

In October, the average sea temperature in Hong Kong, Hong Kong, is 26.5°C (79.7°F).
Note: For swimming, diving, and various water activities, the temperatures ranging from 25°C (77°F) to 29°C (84.2°F) are seen as highly enjoyable and comfortable for extended durations without any discomfort.

Daylight

In Hong Kong, the average length of the day in October is 11h and 38min.
On the first day of October in Hong Kong, sunrise is at 06:14 and sunset at 18:11. On the last day of the month, sunrise is at 06:27 and sunset at 17:46 HKT.

Sunshine

In Hong Kong, the average sunshine in October is 6.3h.

UV index

The average daily maximum UV index in October is 9. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In October, the maximum UV index of 9 suggests these recommendations:
Act with caution. Neglecting protection can lead to skin and eye damage in moments. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Applying and reapplying a broad-spectrum sunscreen with a minimum SPF 30 after every two hours, outdoor workout, or swim is recommended. Be wary! Reflections from sand and water make UV radiation more intense.