Weather in Buenos Aires in April

Prime time. April is about as good as Buenos Aires gets. Highs average 21.1 °C, lows 16.2 °C, and rain falls on 8 days — nothing in the month is working against you.

Buenos Aires barely has seasons. April scores 83 out of 100 against a best of 83 in April — a gap small enough that the month you choose matters far less here than the week you choose.

Rain on 8 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. 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 April reaches 30 °C; the day barely swings — 4.9 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest April day reached 30 °C and the coldest night fell to 8.5 °C, and the wettest single day dropped 85 mm — roughly 87% of the month's rain in one day.

April is moderately variable: 21 mm in the driest year against 230 mm in the wettest, around an average of 98 mm. Roughly two Aprils in three land near that average, and the third does something else entirely.

Wind sits around 16.6 km/h — a steady breeze rather than a nuisance, and welcome on the warmer days, and humidity runs at 75%, high enough to notice on the warm days without dominating them.

How April sits in the year

The month is on the way down: 3.4 °C cooler than March, with May dropping another 3.9 °C. The first week and the last are not the same trip.

Daylight in April

11.3 hours of daylight, losing 1 hours across the month. That is between Buenos Aires's extremes of 14.5 and 9.8 hours, so days are long enough not to constrain the plan.

An inland climate

Despite being inland, the year stays fairly even: 18.9 °C between the year's warmest afternoons and coldest nights.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, May is the trade worth considering — 6 points weaker on weather, and materially quieter.

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

April in Buenos Aires versus nearby

If Buenos Aires is one option among several, the nearby comparison is worth making. Rosario is close enough to be a coin toss — 3 °C warmer, 1 day more rain. Mar del Plata is close enough to be a coin toss — 2.3 °C cooler, 2 days more rain.

So: April is the answer for Buenos Aires. If it is booked out or priced out, November is the next best thing at 0 points behind, and July is the month to keep off the shortlist.

Every month in Buenos Aires

See all twelve months in Buenos Aires, or where else to go in April.