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Vientiane, Laos · Tropical

Vientiane: best months to visit

January (9.1/10) · July (4.5/10).

📅 Data updated: October 2026 🛰️ ERA5 · 10 years 📍 17.97°N · 102.60°E
⚡ Quick answer
January
Depends on your goals
9.1/10
☀️ Jan
Top score (9.1/10)
🌤️ Dec
Alt. (9.1/10)
Jul
Plus rude (4.5/10)
🌴 Tropical☀️ High UV🌧️ Monsoon season
Photo par Boudewijn Huysmans via Unsplash
Decide

When to visit Vientiane?

The decision rests on several criteria. Climate score, tourist crowds and feasible activities.

Verdict: In Vientiane, January and December clearly stand out. July concentrates the least favourable conditions.
Top & avoid
🏆 January · 9.1 December · 9.1 February · 6.1 November · 6.1 ⚠️ July · 4.5
9.1
Jan
6.1
Feb
5.5
Mar
5.0
Apr
4.7
May
4.6
Jun
4.5
Jul
4.6
Aug
4.7
Sep
5.6
Oct
6.1
Nov
9.1
Dec
Best period · ≥ 7 Decent period · 4 – 7 Tough conditions · < 4

What you grasp in 5 seconds

Vientiane offers 2 comfortable months, without any month really to avoid. The gap stays moderate: 9.1 in January vs 4.5 in July.

What to check next

Your tolerance for crowds and budget. The best months concentrate tourist saturation and higher prices. Shoulder seasons offer a good compromise.

Next action

Scroll down to the detailed table to compare month by month, then open the page of the month that interests you.

Compare the 12 months By your project

How we calculate the score

The score combines 4 weighted criteria using 10 years of real climate data (ERA5).

Source : ERA5 · Open-Meteo · 10 years (2016–2025) · Full methodology →

Understand

Compare all 12 months

Month-by-month details: temperature, rain, sunshine, score and verdict.

✅ 2 comfortable months (Jan · Dec)
MonthT° minT° maxRain %mm/daySunScoreVerdict
☀️ January →18°C28°C6%0.5mm7.1h9.1/10Best period
⛅ February →19°C30°C7%0.6mm7.6h6.1/10Decent period
🌥️ March →23°C32°C16%1.4mm6.7h5.5/10Decent period
🌥️ April →25°C34°C23%2.1mm7.1h5.0/10Decent period
🌥️ May →25°C32°C48%7.2mm6.1h4.7/10Decent period
🌥️ June →25°C31°C60%9.9mm4.7h4.6/10Decent period
🌥️ July →25°C31°C65%12.0mm3.7h4.5/10Decent period
🌥️ August →24°C30°C68%13.9mm4.0h4.6/10Decent period
🌥️ September →24°C30°C57%12.5mm5.3h4.7/10Decent period
🌥️ October →23°C30°C26%4.7mm6.8h5.6/10Decent period
⛅ November →21°C30°C7%1.1mm7.5h6.1/10Decent period
☀️ December →18°C28°C3%0.2mm7.3h9.1/10Best period
☀️ January
9.1/10
T°18°C / 28°C
Rain %6%
Sun7.1h
Best period
⛅ February
6.1/10
T°19°C / 30°C
Rain %7%
Sun7.6h
Decent period
🌥️ March
5.5/10
T°23°C / 32°C
Rain %16%
Sun6.7h
Decent period
🌥️ April
5.0/10
T°25°C / 34°C
Rain %23%
Sun7.1h
Decent period
🌥️ May
4.7/10
T°25°C / 32°C
Rain %48%
Sun6.1h
Decent period
🌥️ June
4.6/10
T°25°C / 31°C
Rain %60%
Sun4.7h
Decent period
🌥️ July
4.5/10
T°25°C / 31°C
Rain %65%
Sun3.7h
Decent period
🌥️ August
4.6/10
T°24°C / 30°C
Rain %68%
Sun4.0h
Decent period
🌥️ September
4.7/10
T°24°C / 30°C
Rain %57%
Sun5.3h
Decent period
🌥️ October
5.6/10
T°23°C / 30°C
Rain %26%
Sun6.8h
Decent period
⛅ November
6.1/10
T°21°C / 30°C
Rain %7%
Sun7.5h
Decent period
☀️ December
9.1/10
T°18°C / 28°C
Rain %3%
Sun7.3h
Best period
📊 Quick read
Optimal window
Jan
Good transition
Feb · Nov
Tough period
none
🌡️ Detailed conditions (January)
🌡️ Feel
Warm
☀️ UV
6.1 · Moderate-Strong
💧 Humidity feel
15°C · Pleasant
☔ Rain
6% · 0.5 mm/day
🌅 Sunshine
7.1h/day
10-year trend

Annual temperatures — Vientiane

Min/max temperature curves observed over the past 10 years (ERA5). Shows climate stability and trend.

T° maxT° meanT° min20°22°24°26°28°30°32°201620172018201920202021202220232024202531.2° — decade peak (2019)+0.28°C / decade
Tailor

For your trip

A few angles depending on what kind of trip you are planning.

🌞 Dry season🏖️ Beaches🌊 Surf
Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🏨
Stay
Hotels & rentals · Vientiane
Expedia →
🎟️
Activities
Tours, tickets, experiences
See ↓
✈️
Flights
Multi-airline comparator
Kiwi →

🎟️ Activities & tours · Vientiane

GetYourGuide selection · free cancellation

See all →
Affiliate link · GetYourGuide
Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a tropical stay.

Country · Laos

🗣️LanguageLaotien
💶CurrencyKip laotien (₭)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘVery cheap · 1/5

🌡️ Climate

🌍Climate typeTropical
📈Climate trend ⓘStable
🔥Hottest monthApril · 34°C
❄️Coolest monthJanuary · 28°C
🌧️Rainiest month ⓘAugust · 68%

🏝️ Tropical stay

🌞Dry season ⓘMay → Sep
🌧️Wet season ⓘDec → Mar
🌀Cyclones ⓘSeason Nov-Apr
Explore

Related destinations & guides

If this destination doesn't fit your dates, here are alternatives and guides.

Similar climate destinations

Dhaka · Bangladesh→Chiang Rai · Thailand→Luang Prabang · Laos→Laos · Laos→

Nearby destinations

Chiang Mai · Thailand393 km →Ninh Binh · Vietnam435 km →Hanoi · Vietnam481 km →Sa Pa · Vietnam503 km →

Guides & rankings

World ranking 2026See →
Best summer destinationsSee →
Winter sunSee →
Where to go in JulySee →
Location

Where is Vientiane ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Tropical climate with a 9.1 → 4.5 gap between best and worst month. 10 years of ERA5 data to choose by project.
17.97°N · 102.60°E
Questions

Frequently asked questions

What is the best time to visit Vientiane?
December is the best month with 28.0°C highs, 18.0°C lows, 7.3h of sunshine and 3.0% rainy days. The months of December & January offer comparable conditions.
How many hours of sunshine does Vientiane get in December?
Vientiane averages 7.3 sunshine hours per day in December. It is the sunniest month with a climate score of 8.8/10.
What is the rainiest month in Vientiane?
July is the most unfavourable month with July has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Vientiane in December?
In December, overnight lows reach 18.0°C, while afternoon highs average 28.0°C.
Is Vientiane good in winter?
In winter (December-February), Vientiane scores 7.8/10 on average — Decent period conditions for cultural visits.. The best month overall remains December with a score of 8.8/10.
When should you avoid Vientiane?
July is the most difficult month to visit Vientiane, with July has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.