Weather in Corpus Christi in December

Prime time. If you get to pick your dates, December is the one. Highs average 21 °C, lows 10.2 °C, and rain falls on 5 days — nothing in the month is working against you.

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

Rain falls on only 5 days, so an itinerary with no wet-weather fallback is a reasonable risk. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average December reaches 30 °C. Across the twenty years measured, the hottest December day reached 31 °C and the coldest night fell to -2.2 °C, and the wettest single day dropped 39 mm — roughly 105% of the month's rain in one day.

December is moderately variable: 6 mm in the driest year against 93 mm in the wettest, around an average of 37 mm. Roughly two Decembers in three land near that average, and the third does something else entirely.

Wind is light at 11.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 75%, high enough to notice on the warm days without dominating them.

How December sits in the year

Temperatures hold steady either side: 25 °C in November, 21 here, 19.8 in January. Nothing about the timing within the month matters much.

Daylight in December

December sits at the dark end of Corpus Christi's year — 10.4 hours of daylight against 13.9 at midsummer, holding steady all month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 21.7 °C in December — comfortable for a proper swim. The sea peaks at 29.2 °C in August and bottoms out at 19.2 °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.

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

December in Corpus Christi versus nearby

If Corpus Christi is one option among several, the nearby comparison is worth making. Laredo is close enough to be a coin toss — within a degree on temperature, 1 day less rain. San Antonio is close enough to be a coin toss — 2.3 °C cooler, 1 day more rain.

So: December is effectively as good as it gets here — 0 points behind February, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Corpus Christi

See all twelve months in Corpus Christi, or where else to go in December.