May weather forecast
Cổ Loa, Vietnam

The last month of the spring, May, is also a hot month in Cổ Loa, Vietnam, with temperature in the range of an average low of 24.8°C (76.6°F) and an average high of 34°C (93.2°F).

Temperature

A slight uplift in the average high-temperature marks May, adjusting from April's 30.8°C (87.4°F) to a still hot 34°C (93.2°F). Throughout the month of May, the average temperature dips to a moderately hot 24.8°C (76.6°F) at night.

Heat index

The average heat index in May is evaluated at a burning hot 49°C (120.2°F). Observe: Heat exhaustion and heat cramps are probable. Heatstroke is on the horizon with prolonged exertion.
When assessing, remember that heat index measurements are for light winds and shaded spots. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it's vital to remain hydrated, particularly during prolonged physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.

Humidity

In Cổ Loa, the average relative humidity in May is 74%.

Rainfall

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

Daylight

In Cổ Loa, the average length of the day in May is 13h and 8min.
On the first day of the month, sunrise is at 05:25 and sunset at 18:21. On the last day of May, sunrise is at 05:14 and sunset at 18:34 +07.

Sunshine

The average sunshine in May in Cổ Loa is 9h.

UV index

The months with the highest UV index in Cổ Loa are May 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 the average person.
Note: In May, a regular UV index of 7 translates into these guidelines:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.