April weather forecast
Nội Cốc, Vietnam

April, the same as March, is a moderately hot spring month in Nội Cốc, Vietnam, with an average temperature fluctuating between 29.5°C (85.1°F) and 22°C (71.6°F).

Temperature

The start of April brings a subtle rise in the average high-temperature, moving from 25.4°C (77.7°F) in March to a still warm 29.5°C (85.1°F). Throughout the month of April, Nội Cốc witnesses an average temperature of 22°C (71.6°F).

Heat index

The heat index value during April is evaluated at a torrid 36°C (96.8°F). Exercise special caution, heat exhaustion and heat cramps are probable. Prolonged activity may induce heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is a numerical representation of warmth when taking temperature and moisture levels into account. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

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

Rainfall

In April, the rain falls for 11 days. Throughout April, 12mm (0.47") of precipitation is accumulated. In Nội Cốc, during the entire year, the rain falls for 140.7 days and collects up to 282mm (11.1") of precipitation.

Daylight

In Nội Cốc, Vietnam, the average length of the day in April is 12h and 37min.
On the first day of April, sunrise is at 05:49 and sunset at 18:11. On the last day of the month, sunrise is at 05:27 and sunset at 18:20 +07.

Sunshine

The average sunshine in April is 7.8h.

UV index

The months with the highest UV index are April through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high daily UV index of 7 during April translates into the following directions:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.