March weather forecast
Vientiane, Laos

March in Vientiane, Laos experiences a significant rise in temperatures, signifying the transition into the hotter months of the year. This month sees average temperatures fluctuating between 21.5°C (70.7°F) and 33°C (91.4°F) and records a UV index of 12, which is the maximum for the year. Precautions should be taken when venturing outdoors to avoid excessive sun exposure. The early onset of summer makes March an excellent time to enjoy the various water-based activities in Laos.

Temperature

March ushers in an average high-temperature of a still hot 33°C (91.4°F) in Vientiane, Laos, aligning closely with the preceding month. Vientiane, in March, observes a steady average low-temperature of 21.5°C (70.7°F).

Heat index

The heat index for March is computed to be a blisteringly hot 42°C (107.6°F). Implement additional cautionary measures, heat cramps and heat exhaustion could occur. Prolonged activity might induce heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', shows a temperature sensation when both heat and moisture conditions are combined. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly relevant to children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

The least humid month in Vientiane is March, with an average relative humidity of 66%.

Rainfall

In March, in Vientiane, Laos, the rain falls for 4 days. Throughout March, 34mm (1.34") of precipitation is accumulated. In Vientiane, during the entire year, the rain falls for 118 days and collects up to 1661mm (65.39") of precipitation.

Daylight

In Vientiane, Laos, the average length of the day in March is 12h and 2min.
On the first day of the month, sunrise is at 06:27 and sunset at 18:15. On the last day of March, sunrise is at 06:04 and sunset at 18:22 +07.

Sunshine

In Vientiane, the average sunshine in March is 7h.

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 excessive health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In March, the maximum UV index of 12 suggests this advice:
Undertake every vital safety procedure, as unprotected skin and eyes could sustain burns in no time. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Apply liberally and reapply a broad-spectrum sunscreen of SPF 30+ every two hours, and promptly after any outdoor workout or a swim.