
Vietnam · Asia
The best time to visit Vietnam (Hanoi) is March, April, and November. In summer, daytime highs average 35°C (95°F), with peaks around 38°C (100°F); in winter, nights average 15°C (59°F), dropping to around 8°C (46°F) on the coldest. All climate data are based on historical monthly averages (2005–2025) to help you plan the optimal travel time.
Hanoi in northern Vietnam has a subtropical climate with four recognisable seasons — unusual for Southeast Asia and a key reason why the capital feels so different from the tropical coast. Winter (December to February) is surprisingly cool and overcast at typically 14–22°C (57–72°F), with persistent drizzle; the so-called Mưa Phùn — fine, barely visible spray mist — can persist for days and transform sightseeing tours into an impressionist experience.
The most pleasant travel time is November (October still brings some rain): the weather is dry and warm (typically 25–28°C (77–82°F)), the air clearer than in summer, and the lakes and pagodas of the old town are reflected in calm light. The high-summer bustle has also died down. Spring (March/April) brings oppressive humidity before the rainy season begins — beautiful for nature but tiring for city sightseeing.
From May to September, Hanoi is hot and humid: monthly average highs reach 31–33°C (88–91°F), with high humidity and daily afternoon thunderstorms. Typhoons hit northern Vietnam less frequently than the central coast, but can bring heavy rainfall. Those who travel at this time experience Hanoi at its most vibrant — street kitchens steaming, the old town full of locals — but should bring heat-resistant plans.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ø day, range from coolest to warmest dayØ dayrange | 20° (68°)13– (55–)27 (81) | 22° (72°)14– (57–)28 (82) | 24° (75°)17– (63–)30 (86) | 28° (82°)20– (68–)33 (91) | 33° (91°)25– (77–)38 (100) | 35° (95°)29– (84–)38 (100) | 34° (93°)29– (84–)37 (99) | 33° (91°)27– (81–)37 (99) | 33° (91°)26– (79–)36 (97) | 30° (86°)23– (73–)34 (93) | 27° (81°)20– (68–)32 (90) | 22° (72°)15– (59–)28 (82) |
Ø night, range from coldest to warmest nightØ nightrange | 15° (59°)8– (46–)20 (68) | 17° (63°)10– (50–)22 (72) | 19° (66°)13– (55–)24 (75) | 22° (72°)16– (61–)26 (79) | 25° (77°)21– (70–)28 (82) | 27° (81°)24– (75–)29 (84) | 27° (81°)24– (75–)29 (84) | 26° (79°)24– (75–)28 (82) | 26° (79°)23– (73–)28 (82) | 23° (73°)18– (64–)26 (79) | 20° (68°)15– (59–)24 (75) | 16° (61°)10– (50–)21 (70) |
☀️Sunshine | 3h | 3h | 2h | 4h | 5h | 6h | 6h | 5h | 5h | 5h | 4h | 4h |
🌧Rain Days | 5d48mm (1.9") | 3d28mm (1.1") | 5d58mm (2.3") | 8d116mm (4.6") | 14d225mm (8.8") | 15d254mm (10.0") | 17d301mm (11.9") | 19d409mm (16.1") | 15d296mm (11.7") | 9d146mm (5.7") | 4d45mm (1.8") | 4d30mm (1.2") |
In June, temperatures can exceed 34°C (93°F) — during physical activity or with children, it's best to stick to morning and evening hours.
October offers great weather in Vietnam (Hanoi) with fewer tourists and lower prices — ideal for those who want to avoid the peak season crowds.
Hanoi in its best season: dry from November, temperatures between 18 and 25°C (64 and 77°F), ideal for exploring the 36 streets of the Old Quarter and taking boat trips in Ha Long Bay. Tet in January/February is the highlight of the year — peach blossom and fireworks at Hoan Kiem Lake.
Shoulder season: spring rain and rising temperatures. The rice fields around Ha Giang and Sapa glow a lush green — ideal scenery for motorbike tours through northern Vietnam.
High summer: hot and humid, with monsoon rain in the afternoon. Hanoi stays lively anyway — street food on plastic stools, bia hơi corners, water puppet theatre. Not for the heat-sensitive.
Vietnam's most important festival. There are midnight fireworks at Hoan Kiem Lake, and the Old Quarter's flower markets burst into peach-blossom pink. In the days beforehand, the Quảng Bá flower market by West Lake makes an unforgettable impression.
City Trip
Pleasantly mild, not too hot