Weather in Barranquilla in August

A hard month. August asks something of you. Go in knowing what. You should expect rain on 23 days of the month, which is more days wet than dry.

August ranks 12 of 12 — near the bottom of Barranquilla's year. January is the month that works, and the swing between the two is 42 points, which is a different holiday rather than a slightly better one.

Rain on 23 of the month's 31 days, 3 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Natural fibres and a second shirt for the day. At 83% nothing dries, including you.

What the averages hide

Averages flatten a month, and this one hides a few things: 25 days top 30 °C, making the heat continuous rather than occasional; the day barely swings — 4.2 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest August day reached 34.2 °C and the coldest night fell to 24.7 °C, and the wettest single day dropped 46 mm — roughly 36% of the month's rain in one day.

August is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest August on record still delivered 273 mm against 44 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 129 mm average is a reasonable planning figure, not a promise.

Wind is light at 12.1 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 83%, high enough to notice on the warm days without dominating them.

How August sits in the year

Temperatures hold steady either side: 30.8 °C in July, 31 here, 30.5 in September. Nothing about the timing within the month matters much. Rain has already shifted: 5 days more than July had.

Daylight in August

Barranquilla sits close enough to the equator that daylight barely moves all year — 12.5 hours in August, against a range of just 1.3 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 28.7 °C in August — warm enough that the water offers no relief from the heat. The sea peaks at 29.2 °C in October and bottoms out at 26.4 °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

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

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

August in Barranquilla versus nearby

If Barranquilla is one option among several, the nearby comparison is worth making. Cartagena is close enough to be a coin toss — within a degree on temperature, 2 days more rain. Medellín is a better bet in August — 5.9 °C cooler, 2 days more rain.

So: August is a compromise. January is 42 points better and is what Barranquilla is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Barranquilla

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