Weather in Hat Yai in January

A good month. January is a solid month to be in Hat Yai. The heat itself is manageable at 28.2 °C, but 86% humidity is what you will actually feel.

January ranks 2 of 12 in Hat Yai. Only February scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 12 days, 3 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 86% nothing dries, including you.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 4.1 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest January day reached 30.5 °C and the coldest night fell to 20.8 °C, and the wettest single day dropped 93 mm — roughly 86% of the month's rain in one day.

This is the volatile part. January rainfall has ranged from 5 mm to 477 mm across the twenty years measured — a 472 mm spread around an average of 108 mm. The average is real but almost no individual January looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 11.6 km/h, so the temperature on the page is close to the temperature on your skin, and humidity at 86% is the real story though — it is the number that decides how the day feels, not the 28.2 °C.

How January sits in the year

Temperatures hold steady either side: 28.2 °C in December, 28.2 here, 28.9 in February. Nothing about the timing within the month matters much. Rain is the thing that moves: February brings 7 days less of it, so pushing the dates later buys drier weather.

Daylight in January

Hat Yai sits close enough to the equator that daylight barely moves all year — 11.8 hours in January, against a range of just 0.8 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 27.9 °C in January — warm enough that the water offers no relief from the heat. The sea peaks at 30.6 °C in May and bottoms out at 27.9 °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. January is the value pick for Hat Yai: it scores within 12 points of February without carrying February's prices.

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

January in Hat Yai versus nearby

If Hat Yai is one option among several, the nearby comparison is worth making. Kota Kuala Muda is the weaker option in January — 2.2 °C warmer, 4 days more rain. Krabi is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: January works, with February the better month by 12 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Hat Yai

See all twelve months in Hat Yai, or where else to go in January.