Weather in Haiphong in April

A good month. April is a solid month to be in Haiphong. The heat itself is manageable at 28.7 °C, but 82% humidity is what you will actually feel.

April ranks 6 of 12 in Haiphong: 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, 2 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 82% 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 April day reached 36.9 °C and the coldest night fell to 13.1 °C, and the wettest single day dropped 40 mm — roughly 58% of the month's rain in one day.

April is moderately variable: 29 mm in the driest year against 151 mm in the wettest, around an average of 69 mm. Roughly two Aprils in three land near that average, and the third does something else entirely.

Wind is light at 8.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 82%, high enough to notice on the warm days without dominating them.

How April sits in the year

The month is on the way up: 3.4 °C warmer than March, and May adds another 2.1 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short. Rain is the thing that moves: May brings 8 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in April

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

Sea temperature

The sea sits at about 23.7 °C in April — comfortable for a proper swim. The sea peaks at 29.9 °C in August and bottoms out at 20.4 °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

Shoulder. The value months — prices ease off and you get the place closer to itself.

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

April in Haiphong versus nearby

If Haiphong is one option among several, the nearby comparison is worth making. Hanoi is the weaker option in April — 2.8 °C warmer, 2 days more rain. Thanh Hóa is the weaker option in April — 2.2 °C warmer, the same number of rain days.

So: April is a compromise. December is 19 points better and is what Haiphong 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 Haiphong

See all twelve months in Haiphong, or where else to go in April.