April weather forecast
Ba Vì, Vietnam

April is a tropical spring month in Ba Vì, Vietnam, with an average temperature varying 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). Ba Vì records a consistent low-temperature of 21.4°C (70.5°F) during April nights.

Heat index

During April, the heat index is evaluated at a torrid 38°C (100.4°F). Ensure heightened precautions, risk of heat cramps and heat exhaustion is significant. Sustained activity could provoke heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. When the air holds a significant amount of moisture, the efficiency of the evaporation process is decreased, preventing the body from cooling down efficiently, leading to the sensation of overheating. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

The average relative humidity in April is 76%.

Rainfall

In Ba Vì, Vietnam, during April, the rain falls for 20.3 days and regularly aggregates up to 53mm (2.09") of precipitation. In Ba Vì, during the entire year, the rain falls for 236.6 days and collects up to 1444mm (56.85") of precipitation.

Daylight

In Ba Vì, the average length of the day in April is 12h and 38min.
On the first day of April, sunrise is at 05:51 and sunset at 18:13. On the last day of the month, sunrise is at 05:27 and sunset at 18:23 +07.

Sunshine

In April, the average sunshine is 7.8h.

UV index

April through August, with an average maximum UV index of 7, are months with the highest UV index in Ba Vì. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A typical high UV index of 7 in April suggests the following recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.