In March, Vientiane typically sees daytime highs of 33.4°C and overnight lows around 20.7°C. Compared to the annual average high of 31.3°C, March runs +2.0°C.
March in Vientiane averages a daytime high of 33.4°C and an overnight low of 20.7°C.
March runs +2.0°C compared to Vientiane's annual average high of 31.3°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 33.4°C and cooler evenings around 20.7°C.