Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 27.5 °C | — | 2 days | Ideal — one of the best times of year |
| February | 29.2 °C | — | 2 days | Ideal — one of the best times of year |
| March | 32.5 °C | — | 8 days | Ideal — one of the best times of year |
| April | 34.3 °C | — | 8 days | Pleasant — a good time to go |
| May | 32.9 °C | — | 22 days | Unfavourable season |
| June | 31.3 °C | — | 25 days | Unfavourable season |
| July | 30.6 °C | — | 26 days | Unfavourable season |
| August | 30.2 °C | — | 26 days | Unfavourable season |
| September | 30.1 °C | — | 26 days | Unfavourable season |
| October | 29.9 °C | — | 14 days | Pleasant — a good time to go |
| November | 29.7 °C | — | 3 days | Ideal — one of the best times of year |
| December | 27.4 °C | — | 2 days | Ideal — one of the best times of year |
Nearby in March
Before you go
Three things to check once you have picked your dates.
Entry
Visa issued on arrival for stays of up to 30 days. Passport valid for at least 6 months. Complete the Lao Digital Immigration Form (LDIF) within 3 days before arrival and departure; e-visa (apply 5 days ahead) or visa on arrival; 2 blank pages.
For a British passport, per the UK Foreign Office on 13 August 2026. Rules change: check before booking.
Safety
Outside the areas advised against
Parts of the country are advised against (Xaisomboun province); Vientiane is not one of them.
Official advice updated 13 August 2026
Health
CDC level 2 notice: Polio (global)
Vaccines · typhoid recommended for most travellers; hepatitis A and hepatitis B if you are not already vaccinated; rabies, Japanese encephalitis and polio depending on activities and areas visited. Routine vaccines up to date (measles in particular).
Yellow fever · No yellow fever locally, vaccine not recommended. No entry requirement.
Malaria · Present. Areas: Present in the southern part of the country in the provinces of Attapeu, Champasak, Khammouane, Salavan, Savannakhet, and Sekong Rare cases in the northern part of the country None in the cities of Luang Prabang and Vientiane (the capital). Preventive medication recommended: In the provinces of Attapeu, Champasak, Khammouane, Salavan, Savannakhet, and Sekong: Atovaquone-proguanil, doxycycline, tafenoquine Northern part of the country: No chemoprophylaxis recommended (insect bite precautions and mosquito avoidance only) — prescribed before departure.
Mosquitoes · dengue and Zika reported: protect yourself from bites.
Per the CDC (page reviewed 25 August 2026); see a travel clinic a few weeks before departure.
Beau Fixe is not a safety or health authority. These notes summarise dated public texts and link to their source: France Diplomatie (Licence Ouverte 2.0), Foreign, Commonwealth & Development Office (gov.uk, Open Government Licence v3.0), Centers for Disease Control and Prevention (Source: CDC). Only the competent authorities are authoritative.
FAQ
Can you swim in Vientiane in March?
Vientiane is not a seaside destination (no sea data).
How hot is Vientiane in March?
Expect 32.5°C in the afternoon and 22.6°C at night, averaged over the last 10 years.
Does it rain a lot in Vientiane in March?
Around 8 days with rain (≥ 1 mm) in the month — 25% of days.