Weather in Sa Pa in April

A good month. April is a solid month to be in Sa Pa. You should expect rain on 16 days of the month, which is more days wet than dry.

April ranks 7 of 12 in Sa Pa: past the worst of the year but short of February, which is the month to book if the dates are open.

Rain on 16 days, 4 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest April day reached 31.1 °C and the coldest night fell to 3.9 °C, and the wettest single day dropped 43 mm — roughly 39% of the month's rain in one day.

April is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest April on record still delivered 195 mm against 66 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 110 mm average is a reasonable planning figure, not a promise.

Wind is light at 3.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 74%.

How April sits in the year

Temperatures hold steady either side: 21.8 °C in March, 24.7 here, 26 in May. Nothing about the timing within the month matters much. Rain has already shifted: 7 days more than March had.

Daylight in April

12.6 hours of daylight, gaining 0.6 hours across the month. That is between Sa Pa's extremes of 13.5 and 10.8 hours, so days are long enough not to constrain the plan.

An inland climate

Despite being inland, the year stays fairly even: 22 °C between the year's warmest afternoons and coldest nights. At 1500 m, altitude is doing as much work here as latitude: thinner air means fierce sun by day and heat that leaves the moment it sets.

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.

April in Sa Pa versus nearby

If Sa Pa is one option among several, the nearby comparison is worth making. Hanoi is the weaker option in April — 6.8 °C warmer, 4 days less rain. Luang Prabang is the weaker option in April — 11.5 °C warmer, 5 days less rain.

So: April works, with February the better month by 17 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Sa Pa

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