May marks a turning point as the south’s wet season begins, bringing hot, humid days punctuated by short afternoon downpours. The north shifts into its hot, humid, and increasingly rainy summer, while central Vietnam remains in its dry season but with rising heat.
Weather by Region
North (Hanoi, Ha Long, Sapa, Ninh Binh, Ha Giang, Mai Chau): Entering the hot, humid summer, 28-35°C, with rain beginning to increase.
Central (Hue, Da Nang, Hoi An, Nha Trang, Phong Nha, Quy Nhon, Da Lat): Still dry season, hot conditions continuing; Da Lat remains cool and pleasant at 15-24°C.
South (Ho Chi Minh City, Mekong Delta, Phu Quoc, Mui Ne, Con Dao): Wet season begins, hot and humid with short but heavy afternoon downpours; mornings often remain dry and sunny.
Where to Go in May
- Hoi An, Da Nang, and Nha Trang for continued dry-season beach conditions in the centre
- Da Lat for cool, comfortable highland weather away from the building heat
- Sapa and Ha Giang for green, lush mountain scenery as the north’s rains begin
- Southern destinations are still workable if you plan around brief afternoon storms, particularly Phu Quoc
Where to Avoid or Plan Around
The south’s wet season starts this month, so afternoon downpours become a regular feature — plan outdoor activities for mornings. The north is heating up quickly with rising humidity, making midday sightseeing in Hanoi more tiring.
Events & Festivals
No major nationwide festivals typically fall in May, though it’s a good time to catch the centre’s dry season before it ends later in the year.
Practical Tips for May
- Pack a light rain jacket or umbrella for the south and increasingly for the north
- Plan outdoor activities for mornings in the south to avoid afternoon storms
- Humidity is rising nationwide, so breathable fabrics are worth prioritizing
- Central Vietnam remains the most weather-reliable region this month