April weather forecast
Hữu Lũng, Vietnam

April, the same as March, is a moderately hot spring month in Hữu Lũng, Vietnam, with an average temperature fluctuating between 29.3°C (84.7°F) and 21.3°C (70.3°F).

Temperature

April showcases a minor temperature ascent, adjusting from March's 25.5°C (77.9°F) to a still moderately hot 29.3°C (84.7°F). An average minimum temperature of 21.3°C (70.3°F) marks the month of April.

Heat index

Throughout April, the heat index is computed to be a very hot 35°C (95°F). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children often miss understanding the importance of rest and rehydration. Thirst usually appears late during dehydration - therefore, maintaining hydration, particularly during long physical activities, is essential.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In April, the average relative humidity in Hữu Lũng is 78%.

Rainfall

In April, in Hữu Lũng, the rain falls for 14.8 days. Throughout April, 21mm (0.83") of precipitation is 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 in Hữu Lũng, 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

In Hữu Lũng, the average sunshine in April is 6.9h.

UV index

The average daily maximum UV index in April is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A daily maximum UV index of 6 in April translates into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.