Weather in Kota Kuala Muda in December

A hard month. December asks something of you. Go in knowing what. You should expect rain on 25 days of the month, which is more days wet than dry.

December ranks 8 of 12 in Kota Kuala Muda: past the worst of the year but short of February, which is the month to book if the dates are open.

Rain on 25 of the month's 31 days, 8 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. 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: 19 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest December day reached 32.5 °C and the coldest night fell to 20.3 °C, and the wettest single day dropped 59 mm — roughly 25% of the month's rain in one day.

December is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest December on record still delivered 353 mm against 95 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 233 mm average is a reasonable planning figure, not a promise.

Wind is light at 4.3 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 30.1 °C.

How December sits in the year

Temperatures hold steady either side: 30.2 °C in November, 30.1 here, 30.4 in January. Nothing about the timing within the month matters much. Rain is the thing that moves: January brings 9 days less of it, so pushing the dates later buys drier weather.

Daylight in December

Kota Kuala Muda sits close enough to the equator that daylight barely moves all year — 11.8 hours in December, against a range of just 0.6 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 29.1 °C in December — warm enough that the water offers no relief from the heat. The sea peaks at 30.5 °C in May and bottoms out at 28.9 °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

Quiet. Few other visitors, cheaper rooms, and a real chance some seasonal operators are shut.

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

December in Kota Kuala Muda versus nearby

If Kota Kuala Muda is one option among several, the nearby comparison is worth making. Ipoh 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, 3 days less rain.

So: December 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 Kota Kuala Muda

See all twelve months in Kota Kuala Muda, or where else to go in December.