When to Visit Vietnam

Vietnam's coolest month in the north, with highs around 23 degrees Celsius (74 degrees Fahrenheit) and lows dipping to 16 degrees Celsius (60 degrees Fahrenheit). It's dry nearly everywhere except parts of central Vietnam, and Hanoi can feel chilly, on overcast days when the damp cold seems to settle into buildings. Southern Vietnam is in its dry season glory.

Stays similar to January, with highs reaching about 24 degrees Celsius (76 degrees Fahrenheit) and rainfall dropping to its lowest point of the year at roughly 28 millimeters. Tet typically falls in late January or February, and the country essentially shuts down for a week. Tourist sites empty out during the holiday itself. But transport gets booked solid and some restaurants close. If you time it right, the festival atmosphere is notable.

Marks the transition in the north, as temperatures climb to 27 degrees Celsius (82 degrees Fahrenheit) and the chill finally breaks. Rainfall remains low at around 38 millimeters, and this is arguably the most broadly pleasant month for a multi-region trip. Central Vietnam is warm and dry, the south hasn't yet ramped into full heat, and Ha Long Bay starts to clear from the winter haze.

Brings real warmth across the country, with highs hitting 29 degrees Celsius (85 degrees Fahrenheit) and lows settling around 21 degrees Celsius (70 degrees Fahrenheit). Rain begins to pick up, roughly 74 millimeters, mostly as afternoon thunderstorms that roll through quickly. The humidity starts to become noticeable in the south. Sapa and the northern highlands are lovely, with the last of the spring bloom before the wet season arrives.

The southwest monsoon arrives in earnest. Rainfall leaps to 170 millimeters. Highs stay locked at 31 degrees Celsius (87 degrees Fahrenheit). Ho Chi Minh City drowns daily, usually late afternoon. Streets morph into rivers for an hour. Then the drains gulp and the pavement reappears. The upside is instant cooling. Light after the storm can be surreal. Central Vietnam's beaches remain swimmable.

June slides deeper into monsoon territory. Expect 226 millimeters of rain. Temperatures still hover at 31 degrees Celsius (87 degrees Fahrenheit). Both south and north are soaked. Humidity slaps you outside any air-con bubble. Mornings often stay clear. Smart travelers front-load activities before noon. Halong Bay turns moody, mist hugging the karsts. Some boat tours cut departures.

July is one of the wettest months. Rainfall averages 246 millimeters. Highs settle near 30 degrees Celsius (87 degrees Fahrenheit). Lows linger at 23 degrees Celsius (75 degrees Fahrenheit). Nights offer little relief. The Mekong Delta swells, emerald and alive. Boat trips feel different with higher water. Flash floods threaten mountain trails. Always check conditions before trekking.

August usually logs the year's peak rainfall, about 254 millimeters. Temperatures mimic July: highs of 30 degrees Celsius (87 degrees Fahrenheit). This is prime typhoon season for central and northern Vietnam. Direct hits are rare but the risk shapes itineraries. The south keeps its daily soaking. Silver lining: hotels slash prices. You will share temples with almost no one.

September delivers the heaviest composite rainfall, around 264 millimeters. Temperatures ease to 29 degrees Celsius (85 degrees Fahrenheit). Central Vietnam now catches its own monsoon atop lingering southwest flow. Hue can flood seriously. Meanwhile, northern rice terraces turn gold. Photographers brave the rain for those shots. Evening lows of 22 degrees Celsius (73 degrees Fahrenheit) feel pleasant.

October starts the pivot. Rainfall remains hefty at 234 millimeters. Highs drop to 28 degrees Celsius (83 degrees Fahrenheit). The north begins to dry and cool. Central Vietnam faces rising flood danger as the northeast monsoon kicks in. The south stays soggy but hints at the dry season ahead. The north enters its photogenic prime.

November sees rainfall retreat to 168 millimeters. The southwest monsoon quits the south. Temperatures slide to 26 degrees Celsius (79 degrees Fahrenheit). Lows dip to 19 degrees Celsius (66 degrees Fahrenheit). South and north turn dry and pleasant. Central Vietnam still battles its monsoon. Phu Quoc and the southern coast reopen for beach season.

December brings Vietnam close to its driest spell outside the central coast. Rainfall shrinks to 76 millimeters. Highs settle at 24 degrees Celsius (76 degrees Fahrenheit). The north turns cool and crisp. The south stays warm and dry. The central coast lags, still damp. Hanoi's Old Quarter feels almost European. Locals wear jackets. Steam rises from street carts. Northern lows of 16 degrees Celsius (62 degrees Fahrenheit) demand layers.