June weather forecast
Vientiane, Laos

Water geysers around the memorial Patuxay Monument in Vientiane, Laos
Water geysers around the memorial Patuxay Monument in Vientiane, Laos

Weather in June

The first month of the summer, June, is still a tropical month in Vientiane, Laos, with average temperature varying between 31.9°C (89.4°F) and 24.9°C (76.8°F).

Temperature

In Vientiane, the average high-temperature is essentially the same as in May - a still tropical 31.9°C (89.4°F). In June, the average low-temperature is 24.9°C (76.8°F).

Heat index

The average heat index in June is estimated at an extremely hot 44.9°C (112.8°F). Beware: Heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like activity, clothing, wind, and metabolic differences affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity is 82%.

Rainfall

In June, in Vientiane, the rain falls for 18 days. Throughout June, 279.8mm (11.02") of precipitation is accumulated. In Vientiane, during the entire year, the rain falls for 118 days and collects up to 1660.5mm (65.37") of precipitation.

Daylight

The month with the longest days is June, with an average of 13.2h of daylight.

Sunshine

In June, the average sunshine is 5.1h.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Vientiane. A UV Index reading of 11, and higher, represents an extreme threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 12 in June transform into the following instructions:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.
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FAQ

What is the temperature in June in Vientiane?

The average high-temperature, in June, in Vientiane, Laos, is 31.9°C (89.4°F), while the average low-temperature is 24.9°C (76.8°F). In June, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, is estimated at 44.9°C (112.8°F).

What is the average humidity in June in Vientiane?

The average relative humidity in June in Vientiane is 82%.

How much does it rain in Vientiane in June?

In Vientiane, Laos, during June, the rain falls for 18 days and regularly aggregates up to 279.8mm (11.02") of precipitation.

When are the longest days in Vientiane?

The month with the longest days in Vientiane, Laos, is June, with an average of 13.2h of daylight.

What is the average length of the day in June in Vientiane?

The average length of the day in June in Vientiane is 13.2h.

How many hours of sunshine does Vientiane have in June?

In June, the average sunshine in Vientiane, Laos, is 5.1h.

What is the month with the highest UV index in Vientiane?

March through September, with an average maximum UV index of 12, are months with the highest UV index in Vientiane.

What is the UV index reading in June in Vientiane?

In June, the average daily maximum UV index is 12. A UV Index value of 11, and more, symbolizes an extreme health vulnerability from the exposure to the Sun's UV radiation.

Average temperature in June
Vientiane, Laos

Average temperature in June - Vientiane, Laos
  • Average high temperature in June: 31.9°C

The warmest month (with the highest average high temperature) is April (34.3°C).
The month with the lowest average high temperature is December (28.1°C).

  • Average low temperature in June: 24.9°C

The month with the highest average low temperature is June (24.9°C).
The coldest month (with the lowest average low temperature) is January (16.4°C).

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Average humidity in June
Vientiane, Laos

Average humidity in June - Vientiane, Laos
  • Average humidity in June: 82%

The month with the highest relative humidity is August (84%).
The month with the lowest relative humidity is March (66%).

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Average rainfall in June
Vientiane, Laos

Average rainfall in June - Vientiane, Laos
  • Average rainfall in June: 279.8mm

The wettest month (with the highest rainfall) is August (334.6mm).
The driest month (with the least rainfall) is December (2.5mm).

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Average rainfall days in June
Vientiane, Laos

Average rainfall days in June - Vientiane, Laos
  • Average rainfall days in June: 18 days

The month with the highest number of rainy days is August (21 days).
Months with the least rainy days are January and December (1 days).

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Average daylight in June /
Average sunshine in June
Vientiane, Laos

Average daylight in June / Average sunshine in June - Vientiane, Laos
  • Average daylight in June: 13.2h

The month with the longest days is June (Average daylight: 13.2h).
The month with the shortest days is December (Average daylight: 11.1h).

  • Average sunshine in June: 5.1h

The month with the most sunshine is December (Average sunshine: 8.3h).
The month with the least sunshine is August (Average sunshine: 4.4h).

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Average UV index in June
Vientiane, Laos

Average UV index in June - Vientiane, Laos
  • Average UV index in June: 12

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 8).

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