July 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 July

July, the same as June, in Vientiane, Laos, is another tropical summer month, with an average temperature varying between 31.3°C (88.3°F) and 24.7°C (76.5°F).

Temperature

In Vientiane, the average high-temperature in July is relatively the same as in June - a still hot 31.3°C (88.3°F). The average low-temperature, is 24.7°C (76.5°F).

Heat index

The average heat index in July is evaluated at a scorching 42.7°C (108.9°F). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is a measure of how hot it feels when the actual air humidity is factored in. Additional factors like pregnancy, metabolic differences, wind, and activity influence one's weather impression. 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.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by 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. 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

The average relative humidity in July is 82%.

Rainfall

In July, the rain falls for 20 days. Throughout July, 272.3mm (10.72") 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 average length of the day in July in Vientiane is 13h and 5min.
On the first day of the month, sunrise is at 05:37 and sunset at 18:49. On the last day of July, in Vientiane, sunrise is at 05:47 and sunset at 18:44 +07.

Sunshine

In July, the average sunshine is 4.8h.

UV index

The months with the highest UV index in Vientiane are March through September, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an extreme health hazard from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 12 in July interpret into the following advice:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. 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.
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FAQ

What is the temperature in July in Vientiane?

In Vientiane, in July, the average high-temperature is 31.3°C (88.3°F), and the average low-temperature is 24.7°C (76.5°F). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, is evaluated at 42.7°C (108.9°F).

What is the average humidity in July in Vientiane?

In July, the average relative humidity in Vientiane is 82%.

How many days does it rain in July in Vientiane?

In Vientiane, in July, during 20 rainfall days, 272.3mm (10.72") of precipitation is typically accumulated.

How many hours of daylight does Vientiane have in July?

In July, the average day length in Vientiane, Laos, is 13h and 5min.

What time are sunrise and sunset in July in Vientiane?

In July, on the first day of the month, sunrise is at 05:37 and sunset at 18:49. On the last day of the month, sunrise is at 05:47 and sunset at 18:44 +07.

How many hours of sunshine does Vientiane have in July?

In Vientiane, Laos, the average sunshine duration in July is 4.8h.

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.

How high is the UV index in July in Vientiane?

In Vientiane, Laos, the average daily maximum UV index in July is 12. A UV Index estimate of 11, and higher, represents an excessive health risk from exposure to Sun's UV rays.

Average temperature in July
Vientiane, Laos

Average temperature in July - Vientiane, Laos
  • Average high temperature in July: 31.3°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 July: 24.7°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 July
Vientiane, Laos

Average humidity in July - Vientiane, Laos
  • Average humidity in July: 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 July
Vientiane, Laos

Average rainfall in July - Vientiane, Laos
  • Average rainfall in July: 272.3mm

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 July
Vientiane, Laos

Average rainfall days in July - Vientiane, Laos
  • Average rainfall days in July: 20 days

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

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

Average daylight in July / Average sunshine in July - Vientiane, Laos
  • Average daylight in July: 13h and 5min

The month with the longest days is June (Average daylight: 13h and 11min).
The month with the shortest days is December (Average daylight: 11h and 5min).

  • Average sunshine in July: 4.8h

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 July
Vientiane, Laos

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

The 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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