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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Public Report weather desk. Data from national met services via Open-Meteo.
If you are travelling to South or Southeast Asia, expect the monsoon season to bring 70–80% of annual rainfall between June and September, with daily heavy downpours and high humidity. Plan indoor activities for afternoons, when storms are most frequent.
What is the monsoon and when does it occur?
The monsoon is a seasonal reversal of wind patterns that pulls moist air from the ocean onto land, causing prolonged, heavy rainfall. In Asia, the summer monsoon typically runs from June to September, with peak rainfall in July and August. Monsoon weather in this period delivers 200–400mm of rain per month across much of India, Thailand and Vietnam.
How does the monsoon affect travel and daily life?
Monsoon season in Southeast Asia can disrupt transport — flights may be delayed, roads flood, and rural areas become inaccessible. On the positive side, landscapes are lush, crowds are thinner, and accommodation prices drop. Pack waterproof clothing, insect repellent, and a portable phone charger. Check our 10 Day Weather Forecast UK before departure if you are connecting through UK hubs.
What is monsoon season in simple terms?
It is the rainy period caused by seasonal wind shifts that bring moist ocean air over land. The term originally described the Indian Ocean trade winds but now refers to the wet season across South and Southeast Asia.
What are the monsoon season months in Asia?
The summer monsoon runs June to September in most of South Asia (India, Bangladesh, Nepal) and May to October in parts of Southeast Asia (Thailand, Vietnam, Laos). The winter monsoon (dry season) typically runs November to March.
Is it safe to travel during monsoon season?
Yes, but prepare for delays and flooding. Avoid rural roads after heavy rain, stay informed via local weather services, and consider travel insurance. Many travellers enjoy the lower costs and fewer tourists during monsoon weather.