Vietnam Weather by Month: Where to Be When

Vietnam (베트남 / 越南 / ベトナム) is long and narrow, so weather varies wildly depending on latitude. The north has distinct seasons; the south is hot year-round with a wet/dry split; the central coast gets hammered by typhoons at different times than both. If you plan wrong, you'll spend half your trip in a hotel watching rain.

The basic pattern

Northern Vietnam (Hanoi, Sapa, Ha Long Bay) has four seasons: cool-ish and dry October–March; hot and humid April–September with monsoon rain.

Central Vietnam (Hue, Da Nang, Hoi An) flips the script: September–December brings typhoons and floods; January–August is hot and mostly dry.

Southern Vietnam (Saigon, the Mekong Delta (메콩 델타 / 湄公河三角洲 / メコンデルタ), Phu Quoc) runs on a simple wet season (May–October) and dry season (November–April). Heat is constant.

The mistake most travelers make: booking a beachside holiday for September because flights are cheap, then arriving to 12 hours of rain a day and flooded streets.

Month by month: where to go

January

North (Hanoi, Sapa, Ha Long): 10–20°C, dry. This is peak season—clear skies, low humidity, jacket weather in Sapa. Book accommodations early; prices spike. Hotels in Hanoi run 1.5–2× higher than off-season. Expect crowds on Ha Long Bay (하롱베이 / 下龙湾 / ハロン湾) tours and at temples in Hue.

Central (Hue, Da Nang (다낭 / 岘港 / ダナン), Hoi An): 15–25°C, dry. Excellent. Easy to explore heritage sites without sweating through your shirt. "Ao dai" looksdramatic in soft winter light.

South (Saigon, Can Tho, Phu Quoc (푸꾸옥 / 富国岛 / フーコック)): 24–30°C, dry. Perfect. This is peak beach season. Phu Quoc is busy; ferries fill up. If you're going to the Mekong Delta, January water levels are lower after the wet season—some islands are harder to reach by boat.

Verdict: Go anywhere. Book ahead. Pay 30–50% more than July rates.

February

North: 12–22°C, dry. Still good, but Tet (뗏 (베트남 설날) / 越南春节 / テト (ベトナム旧正月)) falls here (varies by lunar calendar, usually late Jan–mid-Feb). The country shuts down for 7 days—restaurants close, buses are packed, everything costs more. If you love chaos and fireworks, stay. If you want a quiet trip, leave.

Central: 15–26°C, dry. Good window. Still post-Tet, so fewer crowds than January. Hue (후에 / 顺化 / フエ) weather is stable.

South: 24–31°C, dry. Perfect. Dry season peaks. Book soon; February can sell out on beaches.

Verdict: Avoid Hanoi/Saigon (사이공 / 西贡 / サイゴン) during Tet (7–10 days around the lunar new year). Smaller cities and beaches are fine. Prices spike 40–60% for hotels.

March

North: 16–26°C, dry but starting to warm. The end of the cool window. By late March, humidity creeps up and rain begins. Still good for city walks; less crowded than January.

Central: 17–28°C, dry. Solid month. Heat building but manageable. This is underrated—good weather, fewer tourists than Feb.

South: 25–33°C, dry. Still fine, but starting to feel hot. By late March, afternoon rain appears on the horizon (wet season). Interior provinces (Da Lat) are cooler.

Verdict: North is exiting the sweet spot. Central is excellent. South is still OK; if you want a beach, go now or next month.

April

North: 20–30°C, wet. Rainy season begins. Expect 100+ mm of rain by end of month. Heat and humidity spike—feels muggy and warm. Sapa can be cloudy and mist-covered. Ha Long Bay is still swimmable but cloudier. Hanoi becomes a sauna.

Central: 20–31°C, dry. Best month of the year here. No rain, no typhoons, not yet unbearably hot. Book now if you're centering your trip on Da Nang or Hoi An.

South: 27–34°C, wet season arriving. Late April marks the transition; rain increases toward May. Still swimmable and sunny for much of the month, but afternoon downpours begin. If you're unlucky, you hit a wet spell.

Verdict: Central Vietnam is your play. Avoid the north unless you don't mind rain and crowds are OK. South is a risk for beach time.

May

North: 22–32°C, rainy. Monsoon in full swing. 200+ mm of rain this month. Flooding risks in low areas. Sapa is wet and misty. Ha Long Bay can have rough seas. Humidity is oppressive—30–40°C feels like 40–45°C with the wet air. Avoid if you want outdoor activities.

Central: 22–32°C, dry. Still excellent. This is late golden season. By end of May, occasional showers appear, but nothing like the monsoon up north.

South: 27–33°C, wet season. Rain is heavy and daily now. Streets flood in Saigon and Can Tho. Beaches aren't fun. Phu Quoc gets rough seas. Interior (Da Lat) is cooler and wetter—good for hiking if you don't mind damp.

Verdict: Go to central Vietnam. Everywhere else is wet or headed that way. Book accommodations mid-tier—cheap places flood; luxury has backup power.

June–August

North: 25–33°C, wet. Peak monsoon. Landslide risk in mountainous areas (Sapa). Humidity is crushing. Some days it doesn't stop raining. Hanoi stinks from backed-up sewers. Avoid unless you're stuck.

Central: 26–34°C, starting to shift. June and early July are still OK. By late July, typhoon season warnings appear (Sept–Dec is the real risk, but the pattern starts forming). Heat is intense. Late August can have tropical storms.

South: 27–32°C, wet season. Heavy rain, flooding, choppy seas. Not a beach destination. Cost of flights and hotels drops 40–50%—budget travelers go for this. Expect disruptions. Can Tho and the Mekong Delta are actually OK for boat tours because water levels are high (access to islands). Just bring good rain gear.

Verdict: If you must go, it's a budget-travel season. Central coast is risky from late July onward. North is almost always too wet. South is cheap and has its charms if you accept rain. Pack waterproof bag and expect to stay indoors some afternoons.

September

North: 23–30°C, still rainy. Tail end of monsoon. Rain remains heavy. Landslide risk still present in Sapa. Not ideal but drier than summer.

Central: 24–30°C, typhoon season looming. Mid-to-late September brings tropical storms. Da Nang and Hue can flood. Beaches rough. Hoi An sometimes floods in October, so September is the warning month.

South: 26–31°C, wet but drying. Rain is still present but becoming sporadic by late September. Start of the transition. Interior highlands (Da Lat, Lam Dong) cool and green.

Verdict: Avoid central coast if possible. North is risky. South is transitioning—doable if flexible, not ideal. Prices are low. Book hotels with good drainage and ask about typhoon history.

October

North: 18–27°C, drying out. Rainy season ending. Skies clearing. By late October, it's dry and pleasant. Early October can still see rain; late October is golden. Humidity drops. This is when fall truly arrives—comfortable jacket weather.

Central: 19–28°C, drying. Typhoon risk is falling. By late October, weather stabilizes. Hue and Hoi An recover from September floods. Good time to return to this region.

South: 24–29°C, dry season starting. Rain slows significantly. By end of October, it's mostly dry. Temperatures drop slightly. This is the transition month—beaches reopen in the mindset of locals, but water is still a bit turbulent.

Verdict: North is re-entering the best season. Central is recovering and good. South is transitioning upward in quality. Prices begin rising from summer lows but haven't hit peak yet. Book for late October onward.

November

North: 16–24°C, dry and cool. Excellent. Blue skies, low humidity, jacket needed in early morning. Peak season hasn't quite exploded—still slightly cheaper than December. Sapa at night drops to 5–10°C; bring warm clothes.

Central: 17–26°C, dry. Perfect. Cool and clear. Heritage sites are walkable without melting. This is beautiful.

South: 24–30°C, dry season. Great beach month. Water is warm, skies are clear, humidity drops. Phu Quoc is excellent. Mekong Delta is comfortable. Prices rise but not yet January levels.

Verdict: Go anywhere in Vietnam. Weather is excellent across all regions. Book early; November is transitioning into high season. Prices are 20–40% above summer lows but 10–20% below January peaks.

December

North: 14–22°C, dry and cool. Peak season. Prices spike. Hanoi is crowded. Sapa at night is chilly (0–5°C)—bring heavy layers and a good hotel with heating. Clear, beautiful days. Late December gets holiday crowds.

Central: 16–25°C, dry. Excellent. Cool, dry, comfortable. Hue and Hoi An are busy but less swamped than the north. Heritage exploration is ideal.

South: 25–30°C, dry season. Perfect beach weather. Prices rise for Christmas/New Year holidays. If you're traveling Dec 20–Jan 5, book 2+ months ahead. Otherwise, good conditions, moderate crowds.

Verdict: Peak season everywhere. Prices are highest outside of Tet. Weather is excellent. Book accommodations early. Expect crowds, especially Hanoi and Saigon. If you want solitude, central coastal towns (Da Nang) or hill stations (Da Lat, Sapa) are less mobbed than major cities.

Where to go in each season

Best overall: November–March (dry, cool, clear).

• North: Hanoi, Sapa, Ha Long Bay, Ha Giang
• Central: Hue, Da Nang, Hoi An, Quy Nhon
• South: Saigon, Phu Quoc, Ca Mau, Ha Tien

Shoulder season (April, October): mixed risk, fewer crowds, 20–30% cheaper.

• Central Vietnam (April, early Oct)
• South (early October; April is risky)
• Avoid north in April

Wet season (May–September): budget travelers, interior highlands, Mekong Delta.

• Central highlands (Da Lat, Lam Dong) are cooler, wetter, greener
• South (Mekong Delta) water levels high; boat tours access remote islands
• Sapa and north: only if you love mist and don't mind rain
• Expect 40–60% discounts on hotels and flights

Photo by Toàn Văn on Pexels

What to pack by month

Jan–Mar, Nov–Dec (cool dry season):

• Jacket or light sweater (north can be 10–15°C, especially Sapa)
• Layers (temp swings)
• Hat and sunscreen (sun is strong, especially noon)
• Shorts and T-shirts (afternoons are warm)
• Closed shoes for Hanoi rain gutters

Apr–Oct (warm/wet):

• Lightweight rain jacket or poncho (100–200 grams)
• Waterproof bag for electronics
• Quick-dry clothes
• Sandals or water-friendly shoes
• Light, breathable fabrics (cotton, linen)
• Moisture-wicking socks (feet stay damp in tropical rain)

Common pitfalls

Booking a beach trip for June–August thinking prices are cheap. True—they're cheap—but rain is heavy, seas are rough, and you'll spend more time inside than in the water. Budget travelers accept this. Sun-seekers should wait until October.

Arriving in Hanoi in April thinking "spring is nice." Spring here is hot, humid, and rainy. Not spring as in Europe. It's pre-monsoon sauna.

Not accounting for regional weather differences. You can have perfect sun in Da Nang while Hanoi floods 500 km away. This is why itineraries matter: don't build a week-long north loop in September.

Underestimating Tet closures. Restaurants, hotels, and attractions shut for 3–7 days around Tet (late Jan–mid-Feb, lunar calendar). If you're in a touristy area, it's fine. If you're in a rural town, you're eating instant noodles.

Packing the wrong shoes. Hanoi and Saigon have broken sidewalks and gutters. Wear closed shoes in cities. Flip-flops are fine for beaches; not for exploring urban centers in wet season.

Photo by Anh Nguyen on Pexels

Practical cost notes

• Peak season (Nov–Feb, esp. Dec–Jan): Hotel rates 50–100% higher; flights 30–50% higher; popular restaurants book out; taxis harder to find at night.
• Shoulder seasons (April, Oct, early May, late Sept): 20–40% cheaper; flights still reasonable; less crowded but weather is mixed.
• Wet season (June–Aug): Budget airline fares are 40–60% lower; hotels 30–50% cheaper; fewer tourists but weather is unreliable. Value for money is here if you're flexible.
• Tet week: Prices up 40–60%; many places close; chaotic but festive. Plan specifically for this or avoid.

Bottom line

Northern Vietnam is best October–March. Central Vietnam shines April–May and October–November. Southern Vietnam and beaches are best November–April. If you're choosing one month for a first trip, pick November or April (depending on region)—decent weather, not peak prices, and fewer tour buses. If budget is tight, go in June–August and accept rain; you'll save money and see genuine Vietnam, not the tour-group version.