Weather in Hanoi in June

A hard month. June asks something of you. Go in knowing what. You should expect rain on 21 days of the month, which is more days wet than dry.

June ranks 12 of 12 — near the bottom of Hanoi's year. December is the month that works, and the swing between the two is 57 points, which is a different holiday rather than a slightly better one.

Rain on 21 of the month's 30 days, 7 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Natural fibres and a second shirt for the day. At 84% nothing dries, including you.

What the averages hide

Averages flatten a month, and this one hides a few things: 28 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest June day reached 39.6 °C and the coldest night fell to 19.4 °C, and the wettest single day dropped 75 mm — roughly 37% of the month's rain in one day.

June is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest June on record still delivered 317 mm against 98 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 201 mm average is a reasonable planning figure, not a promise.

Wind is light at 5.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 84%, high enough to notice on the warm days without dominating them.

How June sits in the year

Temperatures hold steady either side: 32.7 °C in May, 32.8 here, 32.5 in July. Nothing about the timing within the month matters much.

Daylight in June

June is at or near the longest days of Hanoi's year: 13.4 hours of daylight, holding steady all month. Evenings are the real gain — dinner outdoors still happens in full light.

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

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.

June 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 — within a degree on temperature, 2 days more rain. Thanh Hóa is close enough to be a coin toss — within a degree on temperature, 3 days less rain.

So: June is a compromise. December is 57 points better and is what Hanoi 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 Hanoi

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