May weather forecast
Lao Cai, Vietnam

May in Lao Cai, Vietnam, marks a prominent surge in rainfall compared to April, ushering in what might be discussed as the peak monsoon season. Sunshine hours decline distinctively, allowing clouds to dominate much of the sky. The weather sees the highest average temperatures, reaching up to 32.2°C (90°F). Despite increased humidity levels, the significant rain showers provide a relieving balance. As June unfolds, the weather continues on this damp and warm trajectory.

Temperature

The warmest period is May, when temperatures fluctuate between an average high of 32.2°C (90°F) and a low of 20.3°C (68.5°F).

Heat index

The heat index for May is calculated to be a scorching 41°C (105.8°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Records show heat index calculations are tailored for shaded regions and mild winds. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. The perception of temperature can be subjective, varying based on activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The evaporation of sweat is a natural cooling mechanism of the human body, facilitated by perspiration. With a high level of moisture in the air, the evaporation process becomes less efficient, preventing the body from cooling down efficiently and resulting in a sensation of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

In Lao Cai, the average relative humidity in May is 70%.

Rainfall

In Lao Cai, during May, the rain falls for 18.6 days and regularly aggregates up to 92mm (3.62") of precipitation. In Lao Cai, during the entire year, the rain falls for 188.3 days and collects up to 770mm (30.31") of precipitation.

Daylight

In May, the average length of the day is 13h and 13min.
On the first day of the month, sunrise is at 05:30 and sunset at 18:30. On the last day of May, sunrise is at 05:18 and sunset at 18:43 +07.

Sunshine

The average sunshine in May in Lao Cai is 10.3h.

UV index

March through September, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high UV index of 6 in May translates into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.