Weather in Qui Nhon in August

A hard month. August is a hard month in Qui Nhon, and worth planning around. You should expect rain on 18 days of the month, which is more days wet than dry.

August ranks 12 of 12 — near the bottom of Qui Nhon's year. February is the month that works, and the swing between the two is 48 points, which is a different holiday rather than a slightly better one.

Rain on 18 days, 4 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 31.1 °C days and 27.7 °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: 24 days top 30 °C, making the heat continuous rather than occasional; the day barely swings — 3.3 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest August day reached 34.8 °C and the coldest night fell to 26 °C, and the wettest single day dropped 93 mm — roughly 65% of the month's rain in one day.

August is moderately variable: 34 mm in the driest year against 357 mm in the wettest, around an average of 143 mm. Roughly two Augusts in three land near that average, and the third does something else entirely.

Wind is light at 12.9 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 79%, high enough to notice on the warm days without dominating them.

How August sits in the year

Temperatures hold steady either side: 31 °C in July, 31.1 here, 30 in September. Nothing about the timing within the month matters much. Rain is the thing that moves: September brings 5 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in August

Qui Nhon sits close enough to the equator that daylight barely moves all year — 12.6 hours in August, against a range of just 1.6 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 29.3 °C in August — warm enough that the water offers no relief from the heat. The sea peaks at 29.5 °C in June and bottoms out at 25 °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

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

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

August in Qui Nhon versus nearby

If Qui Nhon is one option among several, the nearby comparison is worth making. Nha Trang is close enough to be a coin toss — within a degree on temperature, 7 days more rain. Hoi An is close enough to be a coin toss — within a degree on temperature, 1 day more rain.

So: August is a compromise. February is 48 points better and is what Qui Nhon 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 Qui Nhon

See all twelve months in Qui Nhon, or where else to go in August.