Weather in Hoi An in March

A good month. March works. It is not the peak, but nothing about it fights you. The heat itself is manageable at 28.6 °C, but 86% humidity is what you will actually feel.

March ranks 3 of 12 in Hoi An. Only February scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 7 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Natural fibres and a second shirt for the day. At 86% nothing dries, including you.

What the averages hide

Averages flatten a month, and this one hides a few things: 9 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest March day reached 34.7 °C and the coldest night fell to 16.4 °C, and the wettest single day dropped 47 mm — roughly 121% of the month's rain in one day.

March is moderately variable: 6 mm in the driest year against 116 mm in the wettest, around an average of 39 mm. Roughly two Marchs in three land near that average, and the third does something else entirely.

Wind is light at 7.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity at 86% is the real story though — it is the number that decides how the day feels, not the 28.6 °C.

How March sits in the year

The month is on the way up: 2.3 °C warmer than February, and April adds another 2.6 °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

Hoi An sits close enough to the equator that daylight barely moves all year — 12 hours in March, against a range of just 1.9 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 25.1 °C in March — warm enough to stay in as long as you like. The sea peaks at 29.9 °C in June and bottoms out at 24.1 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

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 Hoi An versus nearby

If Hoi An is one option among several, the nearby comparison is worth making. Qui Nhon is a better bet in March — within a degree on temperature, 2 days less rain. Ubon Ratchathani is the weaker option in March — 8.2 °C warmer, 1 day less rain.

So: March works, with February the better month by 9 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Hoi An

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