Weather in Cali in August

A good month. August works. It is not the peak, but nothing about it fights you. Highs average 31.2 °C, lows 20.7 °C, and rain falls on 9 days — nothing in the month is working against you.

August is the highest-scoring month of the twelve. The nearest rival is July, and the month at the other end of the year is October.

Rain on 9 days, 0 of them heavy. Enough to need a plan B, not enough to need a plan around it. Pack for 31.2 °C days and 20.7 °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: 26 days top 30 °C, making the heat continuous rather than occasional. Across the twenty years measured, the hottest August day reached 34.9 °C and the coldest night fell to 17.4 °C, and the wettest single day dropped 29 mm — roughly 78% of the month's rain in one day.

August is moderately variable: 11 mm in the driest year against 77 mm in the wettest, around an average of 37 mm. Roughly two Augusts in three land near that average, and the third does something else entirely.

Wind is light at 7.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 78%, high enough to notice on the warm days without dominating them.

How August sits in the year

Temperatures hold steady either side: 30.6 °C in July, 31.2 here, 31.3 in September. Nothing about the timing within the month matters much.

Daylight in August

Cali sits close enough to the equator that daylight barely moves all year — 12.2 hours in August, against a range of just 0.4 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

An inland climate

Despite being inland, the year stays fairly even: 10.8 °C between the year's warmest afternoons and coldest nights. At 758 m the air is thin enough to matter — sun that burns faster than the temperature suggests, and nights that cool off quickly.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, February is the trade worth considering — 8 points weaker on weather, and materially quieter.

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

August in Cali versus nearby

If Cali is one option among several, the nearby comparison is worth making. Bogotá is close enough to be a coin toss — 12 °C cooler, 11 days more rain. Medellín is close enough to be a coin toss — 6.1 °C cooler, 16 days more rain.

So: August is the answer for Cali. If it is booked out or priced out, July is the next best thing at 1 points behind, and October is the month to keep off the shortlist.

Every month in Cali

See all twelve months in Cali, or where else to go in August.