April weather forecast
Hải Lăng, Vietnam

April sees a significant leap in temperatures as Hải Lăng braces for the summer. This can be felt quite drastically when compared with the weather in March. The climb in temperature is accompanied by an extended daylight period. April receives about 12mm (0.47") rainfall, spread over 11 days, indicative of the city transitioning into the wet season. Wind speeds remain relatively stable, providing a respite to the otherwise warm weather.

Temperature

Hải Lăng's weather shows a minor temperature rise with the arrival of April, moving from a warm 25.4°C (77.7°F) in March to a still moderately hot 29.5°C (85.1°F). Hải Lăng in April anticipates an average nighttime temperature of 22°C (71.6°F).

Heat index

For April, the heat index is appraised at a fiery hot 36°C (96.8°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. An individual's perception of weather can be influenced by a variety of factors including metabolic differences, being pregnant, and their degree of physical exertion. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are highly critical for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The body's inherent cooling system operates through perspiration, wherein evaporating sweat offsets excessive heat. 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. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The most humid month is April, with an average relative humidity of 81%.

Rainfall

In Hải Lăng, Vietnam, during April, the rain falls for 11 days and regularly aggregates up to 12mm (0.47") of precipitation. Throughout the year, there are 140.7 rainfall days, and 282mm (11.1") of precipitation is accumulated.

Daylight

The average length of the day in April is 12h and 31min.
On the first day of the month, sunrise is at 05:45 and sunset at 18:04. On the last day of April, in Hải Lăng, Vietnam, sunrise is at 05:26 and sunset at 18:10 +07.

Sunshine

In April, the average sunshine is 7.8h.

UV index

April through September, with an average maximum UV index of 7, are months with the highest UV index in Hải Lăng, Vietnam. A UV Index value of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In April, a regular UV index of 7 translates into these guidelines:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.