Weather in Brownsville in January

Prime time. If you get to pick your dates, January is the one. Highs average 22.3 °C, lows 12.5 °C, and rain falls on 5 days — nothing in the month is working against you.

January ranks 3 of 12 in Brownsville. 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 January reaches 30 °C. Across the twenty years measured, the hottest January day reached 33.2 °C and the coldest night fell to -1.6 °C, and the wettest single day dropped 29 mm — roughly 116% of the month's rain in one day.

January is moderately variable: 2 mm in the driest year against 54 mm in the wettest, around an average of 25 mm. Roughly two Januarys in three land near that average, and the third does something else entirely.

Wind is light at 13.4 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 January sits in the year

This is a turning point in the year — December and February sit on opposite sides of it, so the month contains the change rather than following it.

Daylight in January

January sits at the dark end of Brownsville's year — 10.7 hours of daylight against 13.7 at midsummer, gaining 0.4 hours across the month. Sightseeing days are genuinely shorter, and an itinerary built for summer will not fit.

Sea temperature

The sea sits at about 22 °C in January — comfortable for a proper swim. The sea peaks at 29.4 °C in August and bottoms out at 21.4 °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.

January in Brownsville versus nearby

If Brownsville is one option among several, the nearby comparison is worth making. Corpus Christi is close enough to be a coin toss — 2.5 °C cooler, 1 day more rain. Laredo is close enough to be a coin toss — within a degree on temperature, 1 day less rain.

So: January is effectively as good as it gets here — 1 points behind February, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Brownsville

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