Weather in Surat Thani in March

Shoulder season. March sits in between. You will get good days and you will lose some. Highs average 31.9 °C, lows 24.1 °C, and rain falls on 11 days — nothing in the month is working against you.

March ranks 3 of 12 in Surat Thani. Only February scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 11 days, 2 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 31.9 °C days and 24.1 °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: 28 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest March day reached 36.6 °C and the coldest night fell to 20.8 °C, and the wettest single day dropped 157 mm — roughly 143% of the month's rain in one day.

This is the volatile part. March rainfall has ranged from 3 mm to 846 mm across the twenty years measured — a 843 mm spread around an average of 110 mm. The average is real but almost no individual March looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 5.1 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 March sits in the year

Temperatures hold steady either side: 30.4 °C in February, 31.9 here, 32.8 in April. Nothing about the timing within the month matters much. Rain is the thing that moves: April brings 5 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in March

Surat Thani sits close enough to the equator that daylight barely moves all year — 12.1 hours in March, 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

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.

March 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, 1 day more rain. Hat Yai is close enough to be a coin toss — within a degree on temperature, 1 day more rain.

So: March works, with February the better month by 15 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Surat Thani

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