May weather forecast
Ngọc Lôi, Vietnam

The last month of the spring, May, is another tropical month in Ngọc Lôi, Vietnam, with an average temperature varying between 34°C (93.2°F) and 24.8°C (76.6°F).

Temperature

As April transitions into May, a subtle temperature shift is observed, with average highs adjusting from 30.8°C (87.4°F) to a still hot 34°C (93.2°F). Ngọc Lôi records an average low of 24.8°C (76.6°F) throughout the nights in May.

Heat index

In May, the average heat index is appraised at a burning hot 49°C (120.2°F). Beware: Heat exhaustion along with heat cramps are on the cards. Heatstroke could result from sustained physical activity.
Consider that heat index readings are for situations in the shade and light wind. 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 'feels like' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children often do not understand the need to rest and hydrate. Thirst is a late manifestation of dehydration - therefore, it is essential to stay hydrated, particularly during prolonged physical activities.
Perspiration is the body's default response to elevated temperatures, as it promotes the evaporation of sweat to achieve cooling. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In May, the average relative humidity is 74%.

Rainfall

In May, the rain falls for 18.7 days. Throughout May, 74mm (2.91") of precipitation is accumulated. In Ngọc Lôi, during the entire year, the rain falls for 181.2 days and collects up to 595mm (23.43") of precipitation.

Daylight

In May, the average length of the day is 13h and 8min.
On the first day of May in Ngọc Lôi, sunrise is at 05:25 and sunset at 18:21. On the last day of the month, sunrise is at 05:14 and sunset at 18:33 +07.

Sunshine

In May, the average sunshine is 9h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: An average UV index of 7 in May transforms into this advice:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Experience reduced UV exposure by about half when donning a wide-brim hat.