August weather forecast
Ha Long, Vietnam

August maintains the summer heat while ushering in a slightly different weather pattern. Turning a new leaf, the month records a surprisingly high rainfall of 317mm (12.48"). The balance between high temperatures and heavy rainfall creates a paradoxical yet intriguing climate. Despite the rainfall, average daylight hours decrease only slightly. The month's tropical conditions make indoor activities an appealing option.

Temperature

The average high-temperature for August is a still tropical 31.9°C (89.4°F), closely aligning with the temperature of the preceding month. Ha Long's temperature in August lowers to a consistent average of 24.4°C (75.9°F) during the nights.

Heat index

For August, the heat index is appraised at a life-threatening hot 45°C (113°F). Attention: Heat exhaustion and heat cramps are quite likely. Heatstroke becomes a risk with continued exertion.
From a standpoint of the heat index, values pertain to shaded conditions and mild breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. A person's impression of weather can be shaped by many aspects, among them metabolic variations, pregnancy, and levels of physical activity. Direct exposure to sun rays can potentially augment the heat sensation, elevating the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. 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.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

August and September, with an average relative humidity of 83%, are the most humid months.

Rainfall

The month with the most rainfall is August, when the rain falls for 26.8 days and typically aggregates up to 317mm (12.48") of precipitation.

Sea temperature

In Ha Long, Vietnam, the average seawater temperature in August is 30.2°C (86.4°F).
Note: Taking a dip in waters warmer than 30°C (86°F) might not provide the cooling sensation many desire.

Daylight

In Ha Long, the average length of the day in August is 12h and 50min.
On the first day of the month, sunrise is at 05:26 and sunset at 18:30. On the last day of August, in Ha Long, Vietnam, sunrise is at 05:35 and sunset at 18:08 +07.

Sunshine

The average sunshine in August is 9.1h.

UV index

April through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 7 in August, converts into the following recommendations:
Resist overexposure. Safeguarding from solar damage is indispensable. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.