February weather forecast and climate
Vientiane, Laos

February, the last month of the winter, in Vientiane, is a tropical month, with temperature in the range of an average low of 18.5°C (65.3°F) and an average high of 30.3°C (86.5°F).

Temperature

In Vientiane, the average high-temperature in February is practically the same as in January - a hot 30.3°C (86.5°F). In February, in Vientiane, the average low-temperature is 18.5°C (65.3°F).

Heat index

The average heat index is estimated at a very hot 35.3°C (95.5°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, clothing, pregnancy). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 37.5°C (99.5°F) to 38.3°C (100.9°F), thermal conditions are potentially life-threatening.

Humidity

In February, the average relative humidity in Vientiane is 68%.

Rainfall

In Vientiane, it is raining for 2 days, with typically 13mm (0.51") of accumulated precipitation. Throughout the year, there are 118 rainfall days, and 1660.5mm (65.37") of precipitation is accumulated.

Daylight

In Vientiane, the average length of the day in February is 11.6h.

Sunshine

In Vientiane, Laos, the average sunshine is 7.7h.

UV index

The average daily maximum UV index in Vientiane is 11. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 11 transform into the following instructions:
Practice all essential precautions. Protection against sun damage is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.