April weather forecast
Hưng Hóa, Vietnam

April is a tropical spring month in Hưng Hóa, Vietnam, with an average temperature fluctuating between 21.4°C (70.5°F) and 30.6°C (87.1°F).

Temperature

The start of April brings a subtle rise in the average high-temperature, moving from a moderately hot 26.8°C (80.2°F) in March to a tropical 30.6°C (87.1°F). Hưng Hóa experiences an average low-temperature reading of 21.4°C (70.5°F) throughout April.

Heat index

The heat index for April is evaluated at a sweltering 38°C (100.4°F). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', joins air temperature with relative humidity to produce a temperature perception for humans. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In April, the average relative humidity is 76%.

Rainfall

In Hưng Hóa, during April, the rain falls for 20.3 days and regularly aggregates up to 53mm (2.09") of precipitation. Throughout the year, there are 236.6 rainfall days, and 1444mm (56.85") of precipitation is accumulated.

Daylight

In Hưng Hóa, the average length of the day in April is 12h and 38min.
On the first day of the month, sunrise is at 05:51 and sunset at 18:13. On the last day of April, sunrise is at 05:28 and sunset at 18:23 +07.

Sunshine

In Hưng Hóa, the average sunshine in April is 7.8h.

UV index

The months with the highest UV index are April through August, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A daily high UV index of 7 in April leads to these guidelines:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.