April weather forecast
Phú Hộ, Vietnam

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

Temperature

Phú Hộ's weather shows a minor temperature rise with the arrival of April, moving from a moderately hot 26.8°C (80.2°F) in March to a tropical 30.6°C (87.1°F). April nights cool down to an average low-temperature of 21.4°C (70.5°F).

Heat index

Throughout April, the heat index is evaluated at a very hot 38°C (100.4°F). Take extra safety measures to prevent heat exhaustion and heat cramps. Heatstroke could follow lengthy activity.
Consider that heat index readings are for situations in the shade and light wind. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a single figure representing how weather conditions feel when combining temperature and humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Higher relative humidity impedes evaporation, thus reducing heat dispersion from the body, culminating in a sensation of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In Phú Hộ, the average relative humidity in April is 76%.

Rainfall

In April, the rain falls for 20.3 days. Throughout April, 53mm (2.09") of precipitation is accumulated. In Phú Hộ, during the entire year, the rain falls for 236.6 days and collects up to 1444mm (56.85") of precipitation.

Daylight

In April, the average length of the day is 12h and 39min.
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 05:28 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. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The daily high UV index of 7 during April translates into the following recommendations:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Tightly woven clothing, when worn loosely, shields effectively against the Sun.