Weather in Vũng Tàu in December

A good month. December works. It is not the peak, but nothing about it fights you. Highs average 29.7 °C, lows 22.8 °C, and rain falls on 7 days — nothing in the month is working against you.

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

Rain on 7 days, 1 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 29.7 °C days and 22.8 °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: 14 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest December day reached 33.4 °C and the coldest night fell to 17.7 °C, and the wettest single day dropped 46 mm — roughly 118% of the month's rain in one day.

This is the volatile part. December rainfall has ranged from 0 mm to 146 mm across the twenty years measured — a 146 mm spread around an average of 39 mm. The average is real but almost no individual December looks like it, so treat the figure as the middle of a wide range rather than a forecast.

Wind is light at 9.8 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 81%, high enough to notice on the warm days without dominating them.

How December sits in the year

Temperatures hold steady either side: 29.8 °C in November, 29.7 here, 30.8 in January. Nothing about the timing within the month matters much. Rain has already shifted: 10 days fewer than November had.

Daylight in December

Vũng Tàu sits close enough to the equator that daylight barely moves all year — 11.5 hours in December, against a range of just 1.2 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 26.5 °C in December — warm enough to stay in as long as you like. The sea peaks at 29.9 °C in May and bottoms out at 25.3 °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

Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, March is the trade worth considering — 14 points weaker on weather, and materially quieter.

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

December in Vũng Tàu versus nearby

If Vũng Tàu is one option among several, the nearby comparison is worth making. Ho Chi Minh City is close enough to be a coin toss — within a degree on temperature, 2 days less rain. Cần Thơ is close enough to be a coin toss — within a degree on temperature, 1 day more rain.

So: December is effectively as good as it gets here — 4 points behind January, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Vũng Tàu

See all twelve months in Vũng Tàu, or where else to go in December.