Weather in Vientiane 🇱🇦
Monthly weather averages & travel planning
March
Avg Temp
32°C
Rain Days
6 days
Sun Hours
11 hrs
Humidity
78%
Asia › 🇱🇦 Laos › Vientiane
Updated: March 2026
Is March a Good Time to Visit Vientiane?
6/10
Good
March is a good time to visit Vientiane (6/10). With 11 daily sunshine hours and only 6 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 2nd sunniest of the year in Vientiane. Culture-focused travellers and those who prefer lighter crowds will find March a practical choice, with prices running lower than peak February without sacrificing all the good weather. April offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Vientiane's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.
vs February:30°C avg high
Based on 30-year climate normals (1991 to 2020), March in Vientiane averages 32°C by day and 22°C overnight, a range that places it firmly in the warmer tier of the annual calendar. The month records approximately 11 sunshine hours per day and 34mm of total rainfall across 6 wet days, giving it a sunshine-to-rain ratio that is decidedly favourable for outdoor travel.
32°C
90°F
Avg High
22°C
72°F
Avg Low
6 days
34 mm total
Rain Days
11h
per day avg
Sunshine
78%
Humid
Humidity
Temperature in Vientiane in March
The 10°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. At 78% humidity, the 32°C daytime high feels 2-4°C warmer in practice: quick-dry fabrics and shade-seeking between noon and 3pm are the sensible response. UV index averages 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Winds are calm at an average 12 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 90°F average high, 72°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Temperature Trends
High
Low
Rainfall (mm)
0-20 mm21-50 mm51-100 mm100+ mm
What to Wear in Vientiane in March
Morning22°CBefore the day warms up
Afternoon32°CPeak daytime temperature
Evening25°CAfter sunset cools down
Packing for Vientiane in March means dressing for 32°C days and 22°C evenings. A lightweight linen or cotton shirt with loose-fit trousers or a sundress handles the 32°C daytime heat. Evening temperatures settle at 22°C, a modest 10°C drop that a light cardigan or denim jacket covers. For footwear, breathable walking sandals work for casual exploration, but closed-toe trainers are better for uneven surfaces in the historic centre. For temple and religious site visits, carry a lightweight scarf or sarong to cover shoulders and knees, required at most major sites across the region. At 78% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.
Local tip: Loose-weave linen and moisture-wicking fabrics are the practical choice in Vientiane's heat and humidity. Many shopping centres run air conditioning at near-arctic levels, so a thin layer in your bag prevents discomfort indoors.
Events in Vientiane in March
March has no major festivals or public holidays in Vientiane, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
What to Pack for Vientiane in March
Based on 32°C average highs and 6 rainy days
- Lightweight breathable clothing
- Linen or bamboo shirts for the hottest hours
- Sun hat with a wide brim
- UV-protective sunglasses
- Hydration bottle (at least 1 litre)
- Quick-dry travel towel
- Anti-chafe balm for long walking days
- Moisture-wicking synthetic fabrics for active days
- SPF 30+ sunscreen
- Comfortable walking shoes (a second pair lets the first air out overnight)
- Universal travel adapter
- Small day pack for city exploration
- Reusable water bottle
Best Activities in Vientiane in March
- Early morning walk through Vientiane's historic market districtBest before 9amTemperatures are still manageable at 28°C before the midday heat builds
- Open-air rooftop dining at sunsetFrom 6pm onwardsThe 32°C daytime heat drops noticeably after sunset, making al fresco dining comfortable
- Waterfront promenade or harbour walkEarly morning or after 5pmSea breezes cut through the humidity, making coastal routes the most pleasant in heat
- Guided cycling tour of the old quarterFirst tour of the day (7-9am)The low-traffic window before tourist crowds and the cooler morning air make this the prime riding slot
- Afternoon in a world-class museum or galleryAfternoon (2-5pm)Pairs well with outdoor morning activities and provides a mid-day rest from sightseeing
- Coffee-house or traditional cafe culture experienceMid-morning or post-lunchA cultural ritual in this region that rewards slow appreciation regardless of weather
- Evening live music, theatre, or opera performanceEvening shows typically at 7-9pmConsistent evening temperatures make getting to and from evening venues comfortable
- Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningMarch brings distinct seasonal changes to public green spaces worth exploring
- Seek out chilled local specialities: cold-brew tea, ice desserts, or chilled seafood at street-level stallsAny time; most atmospheric in evening marketsHot-weather street food culture peaks in March, with vendors setting up specifically for warm evenings
Why is Vientiane warm in March?
In March, Vientiane sits in the dry season corridor, as the ITCZ shifts away from the region and trade winds bring drier, more stable air. This produces reliably sunny days reaching 32°C, with lower humidity than the wet months. Overnight lows of 22°C offer a pleasant reprieve from the midday heat. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Frequently Asked Questions
Vientiane in March
In March, Vientiane experiences average highs of 32°C (90°F) and lows of 22°C (72°F). Expect around 6 rainy days and 11 hours of sunshine per day, with humidity averaging 78%. The 10°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 6, so sun protection is advisable on clear days.
Vientiane typically sees 6 rainy days in March, with total precipitation of around 34mm. This makes March one of the drier months of the year, and a reliable window for outdoor sightseeing and day trips. Rain showers tend to be brief when they do occur. For context, the driest month in Vientiane typically sees 4-6 fewer rain days than March.
Pack lightweight, breathable clothing (linen or cotton), a wide-brim sun hat, SPF 50+ sunscreen, and a refillable water bottle for Vientiane in March. The 32°C daytime heat demands sun protection during midday hours, typically 11am to 4pm. Rain is unlikely with only 6 wet days, so leave the umbrella at home and use the bag space for sunscreen. Quick-dry synthetic fabrics are preferable to cotton in 78% humidity.
March is a reasonable time to visit Vientiane. Expect 6 rainy days, so pack a light rain layer for flexibility. Average temperatures of 32°C make outdoor exploration comfortable during the dry periods. With 11 daily sunshine hours, there are reliable windows of good weather to plan outdoor activities around, even if the month is not the driest on the calendar.
The average high temperature in Vientiane in March is 32°C (90°F), and the average low is 22°C (72°F). The mean daily temperature is approximately 27°C (81°F). The day-to-night range of 10°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Vientiane is generally February. February offers the most sunshine at 11 hours per day and only 2 rainy days. Average temperatures reach 30°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around February gives you the best chance of dry, bright weather.
March is shoulder or low season in Vientiane, meaning fewer tourists and generally lower prices than peak months. With 11 sunshine hours and 6 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In March, Vientiane suits a range of activities thanks to warm temperatures of 32°C. With few rainy days, outdoor activities are highly recommended. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 11 hours of sunshine, parks and waterfront walks are particularly enjoyable.
March ranks 2nd sunniest of the year in Vientiane, with an average 11 daily sunshine hours. The driest months are December, January, and February. April is the hottest month (34°C avg high); January is the coolest (27°C). From here, temperatures rise 2°C into April. Compared to last month (February: 30°C high, 2 rain days), March is warmer and wetter. March is among the top three sunniest months to visit Vientiane.
Year-Round Climate
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 27°C | 17°C | 2 | 10h | View |
| February | 30°C | 19°C | 2 | 11h | View |
| March | 32°C | 22°C | 6 | 11h | View |
| April | 34°C | 24°C | 11 | 11h | View |
| May | 32°C | 25°C | 23 | 9h | View |
| June | 30°C | 25°C | 26 | 8h | View |
| July | 30°C | 24°C | 28 | 7h | View |
| August | 30°C | 24°C | 28 | 7h | View |
| September | 30°C | 24°C | 24 | 8h | View |
| October | 29°C | 23°C | 11 | 10h | View |
| November | 29°C | 20°C | 3 | 10h | View |
| December | 27°C | 17°C | 1 | 10h | View |
January
2 rain days, 10h sun
27°17°
February
2 rain days, 11h sun
30°19°
March
6 rain days, 11h sun
32°22°
April
11 rain days, 11h sun
34°24°
May
23 rain days, 9h sun
32°25°
June
26 rain days, 8h sun
30°25°
July
28 rain days, 7h sun
30°24°
August
28 rain days, 7h sun
30°24°
September
24 rain days, 8h sun
30°24°
October
11 rain days, 10h sun
29°23°
November
3 rain days, 10h sun
29°20°
December
1 rain days, 10h sun
27°17°
Other Months in Vientiane
Plan Your Trip to Vientiane
Nearby Destinations
Cities within 500 km with comparable weather conditions
Data Sources for Vientiane
Climate normals represent 30-year averages (1991-2020). Individual years may vary.