January weather forecast
Vientiane, Laos

January, typically a dry month in Vientiane, Laos, experiences temperatures ranging from 16.4°C to 28.4°C. Cooler than the ensuing February, it boasts a moderate UV index and is less humid. The relatively low humidity makes for comfortable conditions, while the lengthy daylight hours facilitate outdoor activities. Even though it is winter in Laos, these temperatures are considered quite warm, indicating the tropical nature of the locale.

Temperature

The arrival of January marks a slight shift to an average high-temperature of a still moderately hot 28.4°C from December's 28.1°C. Vientiane, after an intense day, registers a significant cooling to an average low-temperature of 16.4°C throughout January.

Heat index

The heat index for January is computed to be a hot 31°C. Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
When assessing, remember that heat index measurements are for light winds and shaded spots. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.

Humidity

In January, the average relative humidity is 70%.

Rainfall

In Vientiane, Laos, in January, during 1 rainfall days, 8mm of precipitation is typically accumulated. Throughout the year, in Vientiane, there are 118 rainfall days, and 1661mm of precipitation is accumulated.

Daylight

In January, the average length of the day is 11h and 11min.
On the first day of January in Vientiane, sunrise is at 06:40 and sunset at 17:45. On the last day of the month, sunrise is at 06:42 and sunset at 18:03 +07.

Sunshine

The average sunshine in January is 8.2h.

UV index

The average daily maximum UV index in January is 9. A UV Index of 8 to 10 symbolizes a very high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The daily high UV index of 9 in January translates into this advice:
Protection should always be a priority. Skin and eyes are vulnerable without it. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Prolonged stay under the direct sun should be avoided as much as possible, especially if a person burns easily. Sunscreen with a minimum 30 sun protection factor should always be used.