May weather forecast
Phả Lại, Vietnam

May, the last month of the spring in Phả Lại, is another warm month, with an average temperature varying between 19.3°C (66.7°F) and 29.5°C (85.1°F).

Temperature

The shift into May uncovers an average high-temperature of a still warm 29.5°C (85.1°F), subtly different from the previous month. Phả Lại experiences an average temperature drop to an enjoyable 19.3°C (66.7°F) during May nights.

Heat index

Throughout May, the heat index is calculated to be a torrid 36°C (96.8°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
Heat index details are generally centered around shaded locations and a mild breeze. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is the outcome of merging air's temperature and its humidity metrics. One's perception of temperature is subjective, varying based on their activity and individual heat perception, influenced by factors like wind, clothing, and metabolic variations. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. Elevated relative humidity diminishes evaporation, thereby reducing the body's ability to shed heat and creating a feeling of being too warm. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In May, the average relative humidity in Phả Lại is 80%.

Rainfall

In Phả Lại, in May, it is raining for 26.6 days, with typically 210mm (8.27") of accumulated precipitation. Throughout the year, there are 243.8 rainfall days, and 1386mm (54.57") of precipitation is accumulated.

Daylight

In Phả Lại, the average length of the day in May is 13h and 8min.
On the first day of May, sunrise is at 05:23 and sunset at 18:19. On the last day of the month, sunrise is at 05:12 and sunset at 18:32 +07.

Sunshine

The average sunshine in May is 9.3h.

UV index

April through June, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Stay sun-safe with clothing that is both closely woven and worn loosely.