May weather forecast
Hào Nam, Vietnam

The last month of the spring, May, is another hot month in Hào Nam, Vietnam, with an average temperature ranging between min 24.8°C (76.6°F) and max 34°C (93.2°F).

Temperature

The start of May is characterized by a subtle increase in the average high-temperature, transitioning from a tropical 30.8°C (87.4°F) in April to a still hot 34°C (93.2°F). An average minimum temperature of 24.8°C (76.6°F) marks the month of May in Hào Nam.

Heat index

Throughout May, the heat index is estimated at a life-threatening hot 49°C (120.2°F). Take caution: Heat exhaustion and heat cramps are probable. Heatstroke may be imminent with ongoing effort.
For clarity, heat index numbers account for light winds and areas under shade. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

In May, the average relative humidity in Hào Nam is 74%.

Rainfall

In Hào Nam, during May, the rain falls for 18.7 days and regularly aggregates up to 74mm (2.91") of precipitation. Throughout the year, there are 181.2 rainfall days, and 595mm (23.43") of precipitation is accumulated.

Daylight

In May, the average length of the day is 13h and 8min.
On the first day of May, 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 18:34 +07.

Sunshine

In May, the average sunshine is 9h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index in Hào Nam. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: In May, a regular UV index of 7 translates into these guidelines:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.