Weather in Hoi An in July

A hard month. July is a hard month in Hoi An, and worth planning around. Highs average 33 °C, lows 26.7 °C, and rain falls on 14 days — nothing in the month is working against you.

July ranks 10 of 12 — near the bottom of Hoi An's year. February is the month that works, and the swing between the two is 44 points, which is a different holiday rather than a slightly better one.

Rain on 14 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 33 °C days and 26.7 °C nights; the spread matters more here than any single number.

What the averages hide

Averages flatten a month, and this one hides a few things: 30 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest July day reached 38.5 °C and the coldest night fell to 24.7 °C, and the wettest single day dropped 83 mm — roughly 81% of the month's rain in one day.

This is the volatile part. July rainfall has ranged from 17 mm to 375 mm across the twenty years measured — a 358 mm spread around an average of 102 mm. The average is real but almost no individual July looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 5.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 78%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 33.1 °C in June, 33 here, 32.6 in August. Nothing about the timing within the month matters much. Rain is the thing that moves: August brings 5 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in July

Hoi An sits close enough to the equator that daylight barely moves all year — 13 hours in July, 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 29.8 °C in July — warm enough that the water offers no relief from the heat. This is the warmest the water gets all year.

How busy it gets

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

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

July in Hoi An versus nearby

If Hoi An is one option among several, the nearby comparison is worth making. Qui Nhon is close enough to be a coin toss — 2 °C cooler, 1 day more rain. Ubon Ratchathani is close enough to be a coin toss — 3.3 °C cooler, 11 days more rain.

So: July is a compromise. February is 38 points better and is what Hoi An is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Hoi An

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