Weather in Baton Rouge in May

Shoulder season. May sits in between. You will get good days and you will lose some. Highs average 30.1 °C, lows 18.6 °C, and rain falls on 11 days — nothing in the month is working against you.

May ranks 8 of 12 in Baton Rouge: past the worst of the year but short of November, which is the month to book if the dates are open.

Rain on 11 days, 4 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 30.1 °C days and 18.6 °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: 15 days top 30 °C — hot spells arrive, but they break. Across the twenty years measured, the hottest May day reached 39.3 °C and the coldest night fell to 4.7 °C, and the wettest single day dropped 95 mm — roughly 70% of the month's rain in one day.

May is moderately variable: 22 mm in the driest year against 333 mm in the wettest, around an average of 136 mm. Roughly two Mays in three land near that average, and the third does something else entirely.

Wind is light at 5.7 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 76%, high enough to notice on the warm days without dominating them.

How May sits in the year

The month is on the way up: 4.3 °C warmer than April, and June adds another 2.5 °C. Late in the month feels noticeably different from the start of it, which is worth knowing if the trip is short. Rain is the thing that moves: June brings 7 days more of it, so the earlier half of a flexible trip is the safer half.

Daylight in May

May is at or near the longest days of Baton Rouge's year: 13.7 hours of daylight, gaining 0.6 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

An inland climate

With no coast nearby, the year swings a fair way — 28.5 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

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

May in Baton Rouge versus nearby

If Baton Rouge is one option among several, the nearby comparison is worth making. New Orleans is a better bet in May — 2.6 °C cooler, 1 day less rain. Jackson is a better bet in May — 2.3 °C cooler, 1 day more rain.

So: May works, with November the better month by 18 points if the dates can move. If they cannot, nothing here should stop you booking.

Every month in Baton Rouge

See all twelve months in Baton Rouge, or where else to go in May.