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

Transitioning into October, Ha Long records an average high-temperature of a warm 28.8°C (83.8°F), almost identical to September's 30.9°C (87.6°F). Throughout October, the temperature tends to fall to a consistent average low of 21°C (69.8°F).

Heat index

The heat index for October is estimated at a hot 34°C (93.2°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'feels like' or 'real feel', marries air temperature and humidity to produce a value illustrating perceived warmth. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.

Humidity

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

Rainfall

In Ha Long, during October, the rain falls for 16.7 days and regularly aggregates up to 86mm (3.39") of 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: Engaging in water activities, such as swimming or diving, in temperatures from 25°C (77°F) to 29°C (84.2°F) is very pleasurable for extended periods, without any discomfort.

Daylight

The average length of the day in October is 11h and 40min.
On the first day of October, 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 is 6.7h.

UV index

In October, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 6 during October translates into the following directions:
Incorporate safeguards and honour sun safety principles. Protection from skin and eye damage is obligatory. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Notice! Sand and water reflections contribute to a stronger UV exposure.