April weather forecastVũ Xá, Vietnam

Weather in April

April, like March, in Vũ Xá, Vietnam, is a moderately hot spring month, with an average temperature varying between 22°C (71.6°F) and 29.5°C (85.1°F).

Temperature

With the onset of April, the average high-temperature subtly transitions from a warm 25.4°C (77.7°F) in March to a still moderately hot 29.5°C (85.1°F). The nighttime temperature dips to an agreeable 22°C (71.6°F) on average during April.

Heat index

The average heat index in April is estimated at a sweltering 36°C (96.8°F). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', evaluates the perceived heat by adding the effect of moisture in the air. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. Should you be directly under the sun, anticipate a possible increase in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. 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.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. An upsurge in relative humidity affects normal body cooling mechanisms by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

With an average relative humidity of 81%, April is the most humid month.

Rainfall

In Vũ Xá, in April, it is raining for 11 days, with typically 12mm (0.47") of accumulated precipitation. Throughout the year, there are 139.5 rainfall days, and 271mm (10.67") of precipitation is accumulated.

Daylight

The average length of the day in April is 12h and 38min.
On the first day of the month, sunrise is at 05:46 and sunset at 18:08. On the last day of April, sunrise is at 05:23 and sunset at 18:18 +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. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 7 during April leads to these instructions:
Fend off overexposure. Sun protection is vital. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.