Hạ Long

Spring (March to April):

• Spring is an excellent time to visit Northern Vietnam. Temperatures range from 15-25°C (59-77°F).
• It's an ideal time for sightseeing, exploring cities like Hanoi, and trekking in areas like Sapa when nature is lush and colorful.

Summer (May to August):

• Summers are hot and humid, with temperatures ranging from 25-35°C (77-95°F).
• While it's warmer, this period is suitable for exploring Ha Long Bay and coastal areas. However, be prepared for occasional heavy rainfall, especially in July and August.

Fall (September to November):

• Fall brings cooler temperatures, ranging from 20-30°C (68-86°F), and less humidity.
• It's an excellent time for outdoor activities, trekking in Sapa, and exploring Ha Long Bay. The weather is generally more comfortable during this season.

Winter (December to February):

• Winters are cooler and drier, with temperatures around 10-20°C (50-68°F).
• It's a good time for cultural exploration, city sightseeing in Hanoi, and trekking in Sapa. However, it can get quite cold in mountainous areas like Sapa.