Weather in Surat Thani in April

A hard month. April is a hard month in Surat Thani, and worth planning around. You should expect rain on 16 days of the month, which is more days wet than dry.

April ranks 10 of 12 — near the bottom of Surat Thani's year. February is the month that works, and the swing between the two is 32 points, which is a different holiday rather than a slightly better one.

Rain on 16 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 32.8 °C days and 25.4 °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: 27 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest April day reached 38 °C and the coldest night fell to 22.2 °C, and the wettest single day dropped 43 mm — roughly 41% of the month's rain in one day.

April is moderately variable: 10 mm in the driest year against 215 mm in the wettest, around an average of 104 mm. Roughly two Aprils in three land near that average, and the third does something else entirely.

Wind is light at 4.6 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 April sits in the year

This is a turning point in the year — March and May sit on opposite sides of it, so the month contains the change rather than following it. Rain is the thing that moves: May brings 10 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in April

Surat Thani sits close enough to the equator that daylight barely moves all year — 12.3 hours in April, against a range of just 1.1 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

An inland climate

Despite being inland, the year stays fairly even: 9.9 °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.

April in Surat Thani versus nearby

If Surat Thani is one option among several, the nearby comparison is worth making. Krabi is close enough to be a coin toss — within a degree on temperature, 4 days more rain. Hat Yai is close enough to be a coin toss — within a degree on temperature, 3 days more rain.

So: April is a compromise. February is 29 points better and is what Surat Thani 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 Surat Thani

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