April weather forecast
Hải Lăng, Vietnam

April, the same as March, is another warm spring month in Hải Lăng, Vietnam, with an average temperature varying between 29.5°C (85.1°F) and 22°C (71.6°F).

Temperature

In April, the average high-temperature slightly increases from a warm 25.4°C (77.7°F) in March to a still moderately hot 29.5°C (85.1°F). The average low-temperature, in April, is 22°C (71.6°F).

Heat index

The average heat index in April is computed to be a very hot 36°C (96.8°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'apparent temperature', 'felt air temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (metabolic differences, differences in body mass, height, and shape, clothing). 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 especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

April is the most humid month in Hải Lăng, with an average relative humidity of 81%.

Rainfall

In April, the rain falls for 11 days. Throughout April, 12mm (0.47") of precipitation is accumulated. In Hải Lăng, during the entire year, the rain falls for 140.7 days and collects up to 282mm (11.1") of precipitation.

Daylight

In Hải Lăng, the average length of the day in April is 12h and 31min.
On the first day of April in Hải Lăng, sunrise is at 05:46 and sunset at 18:03. On the last day of the month, sunrise is at 05:26 and sunset at 18:09 +07.

Sunshine

The average sunshine in April is 7.8h.

UV index

The months with the highest UV index are April through September, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 7 in April interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.