Best Time to Visit Vietnam (Real Climate Data, Month by Month)

Photo by Andreea Popa on Unsplash

April is the best month to visit central Vietnam, and it is not close: Da Nang recorded 38.1mm (1.5in) of rain across just 6 days in April 2025, with highs of 30.1°C (86.2°F) and lows of 23.3°C (73.9°F). May is the runner-up — 65.2mm (2.6in) spread over 18 days, which works out to about 3.6mm a day, so the rain shows up as short passing showers rather than anything that ruins a plan. At the other extreme, October dumped 826.7mm (32.5in) over 28 days, meaning roughly three dry days in the entire month.

The numbers below are measured 2025 observations for Da Nang, which sits on the central coast between Hue and Hoi An. Central Vietnam has the sharpest wet/dry split in the country, so it is the region where timing matters most.

The best months: February through May

The dry window in central Vietnam runs from roughly February to May, and each month inside it feels different.

April is the peak. Highs of 30.1°C (86.2°F), lows of 23.3°C (73.9°F), and only 6 rainy days out of 30. That leaves about 24 completely dry days. The heat is real but not punishing — 30°C with a sea breeze is beach weather, not survival weather. This is the month where a Hoi An old-town walk at 2pm is pleasant, where a Hai Van Pass motorbike ride does not end soaked, and where My Son's open ruins are worth the midday trip.

May is nearly as good, and hotter. Highs hit 32.5°C (90.5°F) with lows of 25.8°C (78.4°F) — nights stop cooling down, which is what most people actually notice. The 18 rain days sound alarming until you divide: 65.2mm across 18 days averages 3.6mm each. That is a ten-minute shower that dries off the pavement before you finish a coffee. May is the least-rain-per-rainy-day month of the entire year.

March is the cool-and-dry compromise. Highs of 26.2°C (79.2°F), lows of 21.1°C (70.0°F), 12 rain days. But March logged 184.9mm (7.3in), and 184.9mm over 12 days is about 15mm per rainy day — those are proper rain events, not drizzle. Roughly two-thirds of March is dry and mild; the other third is genuinely wet.

February is the mildest. Highs of 24.1°C (75.4°F), lows of 20.2°C (68.4°F). It rained on 20 days — but only 106.6mm (4.2in) total, about 5.3mm per rainy day. That is grey, damp, drizzly weather rather than tropical rain. If you overheat easily, or you are here to walk cities rather than swim, February is more comfortable than April.

The months to avoid: September through December

October is the month to avoid. 826.7mm (32.5in) of rain across 28 days. That is more rain in one month than falls in January, February, March, April, May and July combined (546mm total). Temperatures are actually pleasant — 28.8°C (83.8°F) high, 24.4°C (75.9°F) low — which is exactly the trap. The forecast will show reasonable temperatures and you will still spend the trip indoors. Central Vietnam's flooding season peaks here; Hoi An's riverside streets have gone under in past Octobers.

November is October's aftershock. 436.1mm (17.2in) over 22 days at 26.2°C (79.2°F) / 22.4°C (72.3°F). Roughly 20mm per rainy day means real downpours, not passing showers, though you do get 8 dry days back.

September starts it. 351.7mm (13.8in) over 26 days, highs of 30.7°C (87.3°F). Still hot, already wet — the worst pairing. At 13.5mm per rainy day it is less violent than October, but with 26 wet days you are rarely dry for long.

December is wet but soft. 28 rain days sounds like October, but the total is only 244.3mm (9.6in) — about 8.7mm a day. Cooler too: 25.2°C (77.4°F) high, 21.4°C (70.5°F) low. December is persistent grey drizzle rather than flooding. Bad for beaches, workable for cities and food.

June is the heat outlier. It sits inside what people call the dry season, but 2025 recorded 393.0mm (15.5in) over 16 days — about 25mm per rainy day, the second-heaviest per-event rain of the year — on top of the joint-hottest highs at 33.9°C (93.0°F). Hot and stormy is worse than either alone.

Shoulder season: February, March, and late May

The cheapest time that is still genuinely good is February and March. Both sit below 27°C (80°F) for highs, so hotels are not pricing for beach season, and both are dry enough to travel around freely — March gives you 19 dry days out of 31, February gives you 11 but the wet ones are barely wet at 5.3mm each.

The trade is water temperature and daylight-heat. At 24.1°C (75.4°F) in February, An Bang and My Khe beaches are pleasant to walk and cool to swim. If the beach is the point of the trip, wait for April.

Late May is the other value window — the rain is still minimal (3.6mm per wet day) but the 32.5°C (90.5°F) heat has started pushing peak-season crowds out. You get April's dryness at a discount, and you pay for it in sweat.

Avoid treating September or November as shoulder season on price alone. They are cheap because 351.7mm and 436.1mm of rain make them cheap.

What each season actually means for your days

February–March (24–26°C / 75–79°F): Long-sleeve mornings, t-shirt afternoons. You will be doing Hue's citadel, Hoi An's tailors, Da Nang's Dragon Bridge at night, and eating outside without hunting for shade. Pack a light rain shell — 20 drizzle days in February means you will use it, but you will never need an umbrella that survives wind. Closed shoes are fine and often better on wet stone.

April–May (30–32.5°C / 86–90.5°F): This is swim-and-sweat weather. Two shirts a day, sunscreen every day, and a genuine need for a water bottle — with lows at 23.3–25.8°C (73.9–78.4°F), you never get a cool part of the day to recover in. Plan outdoor sightseeing before 10am and after 4pm; use the middle of the day for the Cham Museum, a long lunch, or the pool. With only 6 rainy days in April, you can book day trips without a backup plan.

June–August (33.7–33.9°C / 92.7–93.0°F): The hottest stretch of the year, and the rain arrives as afternoon storms — June's 393.0mm across 16 days and August's 252.5mm across 15 days both average 17–25mm per rainy day, which is a heavy hour, not a wet week. Mornings are usually usable. Plan around the afternoon, not the day.

September–December (25–31°C / 77–87°F): Waterproof everything. 28°C (83.8°F) in October with 28 rainy days does not mean cold — it means warm rain, wet feet, and clothes that never fully dry in humid air. Quick-dry fabrics beat cotton by a wide margin. Sandals you can walk in wet, a dry bag for your phone and passport, and flexible bookings, because coastal flooding cancels boat trips and closes roads.

Month-by-month

• January — 23.0°C / 18.4°C (73.4°F / 65.1°F), 111.3mm over 14 days. Coolest month of the year; half the days are dry.
• February — 24.1°C / 20.2°C (75.4°F / 68.4°F), 106.6mm over 20 days. Frequent drizzle, small totals. Mild and cheap.
• March — 26.2°C / 21.1°C (79.2°F / 70.0°F), 184.9mm over 12 days. Mostly dry, but wet days are real rain.
• April — 30.1°C / 23.3°C (86.2°F / 73.9°F), 38.1mm over 6 days. The best month. 24 dry days.
• May — 32.5°C / 25.8°C (90.5°F / 78.4°F), 65.2mm over 18 days. Hot, but the lightest showers of the year.
• June — 33.9°C / 26.2°C (93.0°F / 79.2°F), 393.0mm over 16 days. Hottest and stormy. Skip it.
• July — 33.9°C / 26.6°C (93.0°F / 79.9°F), 142.3mm over 17 days. Equally hot, far less rain than June.
• August — 33.7°C / 26.3°C (92.7°F / 79.3°F), 252.5mm over 15 days. Hot with heavy afternoon storms.
• September — 30.7°C / 25.2°C (87.3°F / 77.4°F), 351.7mm over 26 days. Wet season begins in earnest.
• October — 28.8°C / 24.4°C (83.8°F / 75.9°F), 826.7mm over 28 days. The wettest month by a factor of two. Avoid.
• November — 26.2°C / 22.4°C (79.2°F / 72.3°F), 436.1mm over 22 days. Still heavily wet.
• December — 25.2°C / 21.4°C (77.4°F / 70.5°F), 244.3mm over 28 days. Rains constantly, but lightly.

FAQ

What is the single best month to visit Vietnam?

April, for central Vietnam. It recorded 38.1mm (1.5in) of rain over 6 days — the driest month of 2025 by a wide margin — at 30.1°C (86.2°F) highs and 23.3°C (73.9°F) lows. The next-driest month, May, had almost twice the rain at 65.2mm, and every other month had at least 106.6mm.

Does it rain all day during the wet season?

It depends which wet month. In October, 826.7mm across 28 days averages roughly 29mm per rainy day — that is closer to genuine all-day rain, and it is why central Vietnam floods in October. But August's 252.5mm across 15 days works out to about 17mm on the days it rains, with 16 dry days in the month, so August behaves like afternoon downpours: usable mornings, a violent hour, then it clears. December is a third pattern entirely — 28 rain days but only 244.3mm total, which is persistent light drizzle rather than downpours.

How hot does it actually get, and is it bearable?

June and July both peaked at 33.9°C (93.0°F), with August just behind at 33.7°C (92.7°F). The harder number is the overnight low: July bottomed out at 26.6°C (79.9°F), so it never really cools off. Combined with coastal humidity, that means air conditioning at night is not optional and midday sightseeing is unpleasant. April's 30.1°C (86.2°F) high with a 23.3°C (73.9°F) low is the more comfortable version of hot.

Do northern and southern Vietnam follow the same calendar?

No. The figures on this page are measured for Da Nang on the central coast, and central Vietnam's wet season is unusually late — peaking in October and November when much of Southeast Asia is drying out. Northern Vietnam (Hanoi, Sapa, Ha Long) gets a genuinely cool winter and a summer wet season; the south (Ho Chi Minh City, the Mekong Delta, Phu Quoc) runs a conventional May-to-November monsoon. If you are doing a north-to-south trip, April is the month that works everywhere at once — it is dry in the centre, before the southern monsoon, and past the northern winter drizzle.