October weather forecast
Ha Long, Vietnam

October sees a more noticeable transformation into the autumn season in Ha Long. With a substantial decrease in rainfall to 86mm (3.39"), the month enters a less humid phase. While the temperatures remain comfortable, the city enjoys a respite from the heavy rainfall. October unveils a golden hue across the cityscape, making it a perfect time for sightseeing. The dip in rainfall levels translates into longer sunshine hours, further enhancing the charm of this month.

Temperature

With the advent of October, Ha Long's high-temperatures adjust to a moderately hot 28.8°C (83.8°F), closely aligning with the preceding month. An average low-temperature of 21°C (69.8°F) is noted in Ha Long during the month of October.

Heat index

The heat index for October is appraised at a hot 34°C (93.2°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.
Research indicates the heat index considers values in shaded locales and with light winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

In October, the average relative humidity in Ha Long is 78%.

Rainfall

In Ha Long, in October, it is raining for 16.7 days, with typically 86mm (3.39") of accumulated precipitation. In Ha Long, during the entire year, the rain falls for 237.1 days and collects up to 1472mm (57.95") of precipitation.

Sea temperature

In Ha Long, the average seawater temperature in October is 26.9°C (80.4°F).
Note: For water activities like swimming, diving, and more, temperatures ranging between 25°C (77°F) and 29°C (84.2°F) offer superior comfort and enjoyment for lengthy durations.

Daylight

In Ha Long, the average length of the day in October is 11h and 40min.
On the first day of October in Ha Long, sunrise is at 05:43 and sunset at 17:39. On the last day of the month, sunrise is at 05:54 and sunset at 17:16 +07.

Sunshine

In October, the average sunshine in Ha Long is 6.7h.

UV index

In Ha Long, Vietnam, the average daily maximum UV index in October is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 6 in October interprets into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.