April weather forecast
Hữu Lũng, Vietnam

April, like March, in Hữu Lũng, Vietnam, is another warm spring month, with an average temperature fluctuating between 21.3°C (70.3°F) and 29.3°C (84.7°F).

Temperature

April's onset witnesses a minor shift in the average high-temperature, moving from 25.5°C (77.9°F) in March to a still warm 29.3°C (84.7°F). During the nights in April, an average low-temperature of 21.3°C (70.3°F) is observed.

Heat index

The heat index for April is evaluated at a very hot 35°C (95°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.
Data suggests that the heat index is set for environments in shade and with a light wind. The heat index might be elevated by 15 Fahrenheit (8 Celsius) degrees due to direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

The average relative humidity in April is 78%.

Rainfall

In Hữu Lũng, Vietnam, in April, during 14.8 rainfall days, 21mm (0.83") of precipitation is typically accumulated. In Hữu Lũng, during the entire year, the rain falls for 166.7 days and collects up to 454mm (17.87") of precipitation.

Daylight

The average length of the day in April is 12h and 39min.
On the first day of April, sunrise is at 05:47 and sunset at 18:09. On the last day of the month, sunrise is at 05:23 and sunset at 18:19 +07.

Sunshine

The average sunshine in April in Hữu Lũng is 6.9h.

UV index

In Hữu Lũng, the average daily maximum UV index in April is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for average individuals.
Note: In April, the average maximum UV index of 6 translates into the following recommendations:
Endorse precautions and be consistent with sun safety guidelines. Preventing sunburn is paramount. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.