Weather in Hanoi in March

Prime time. March is about as good as Hanoi gets. Highs average 27.8 °C, lows 17.4 °C, and rain falls on 10 days — nothing in the month is working against you.

March ranks 5 of 12 in Hanoi: past the worst of the year but short of December, which is the month to book if the dates are open.

Rain on 10 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: 11 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest March day reached 38.9 °C and the coldest night fell to 7.4 °C, and the wettest single day dropped 33 mm — roughly 67% of the month's rain in one day.

March is moderately variable: 13 mm in the driest year against 127 mm in the wettest, around an average of 49 mm. Roughly two Marchs in three land near that average, and the third does something else entirely.

Wind is light at 7.9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 80%, high enough to notice on the warm days without dominating them.

How March sits in the year

The month is on the way up: 3.2 °C warmer than February, and April adds another 3.7 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short.

Daylight in March

12 hours of daylight, gaining 0.6 hours across the month. That is between Hanoi's extremes of 13.4 and 10.9 hours, so days are long enough not to constrain the plan.

An inland climate

Despite being inland, the year stays fairly even: 21.2 °C between the year's warmest afternoons and coldest nights.

How busy it gets

Busy. Popular without being frantic; book the things you care about, improvise the rest.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

March in Hanoi versus nearby

If Hanoi is one option among several, the nearby comparison is worth making. Haiphong is close enough to be a coin toss — 2.5 °C cooler, the same number of rain days. Thanh Hóa is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: March works, with December the better month by 13 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Hanoi

See all twelve months in Hanoi, or where else to go in March.