Bogotá weather in September

Bogotá's forum describes September as the tail end of the dry season, with real rain returning as the month goes on — cloudy stretches and sudden downpours mixed with clear spells. Regulars are consistent that a jacket is needed day and night regardless of the forecast, since the temperature rarely climbs much past the high teens Celsius even at altitude.

Regulars tie the city's cool, rainy character directly to its altitude, roughly 9,000 feet up in the Andes, with this month bringing scattered thunderstorms that come and go through the day rather than a settled downpour. Our row backs that cool, genuinely wet read, 19C over 9.9C nights feeling 9C, with 70mm of rain across a substantial 18.4 days and humidity at 81 percent. Regulars are specific that a rainy afternoon here can feel meaningfully colder than a dry one, and that the following month, July, reliably brings noticeably fewer showers - worth factoring in for anyone with flexible travel dates. A warm layer alongside rain gear is the standard packing advice regardless of which version of the day arrives. The record: 8.3 hours of sun, a 9.2 kph wind and AQI 39.

At 2,600m the sky decides the temperature here, and regulars put it exactly: above 25C when the sun is out, about 18C when it clouds over, and below 10C once it is dark. Our row averages 20C over 8.3C, which is that whole range flattened into two numbers. They call December the dry season and our totals half agree - 85.1mm against March's 176.2mm - but the rainy-day count stays high at 18.3, so it is a drier month rather than a dry one. The solar radiation at this altitude is fierce whatever the temperature says, so sunscreen matters more than a coat. Layers, and something waterproof. The record: humidity 84 percent, 10 hours of sun and AQI 64.

July is the Andean dry season and regulars describe the day rather than the month: sunny mornings, cloudier afternoons that may or may not produce a shower, and whole weeks in July that pass without rain. Forecasts always promise it and usually deliver a few minutes of tropical shower. What follows is the useful part - a rainy afternoon sits near 14C and a dry one near 21C, so the temperature is decided by whether it rains rather than by the date. A single day can run cold, hot, windy and wet in order. Our row gives 18.7C over 9.6C with 49.7mm across 14.9 days, three millimetres apiece. Bring rain gear; the water is cold. The record: humidity 77 percent, 8.3 hours of sun and AQI 33.

August is Bogota's windy season, which is why the kites are out everywhere and why the big kite festival happens at this time of year. Regulars are careful that dry is relative here: August is not one of the rainier months and still brings a good chance of rain on any day, sometimes a quick shower and sometimes on and off all day - our row gives 39.4mm across 11.9 precipitation days, which is frequent and light. The altitude does the rest. They describe the temperature moving from 15 to 18C, occasionally low 20s, down to single figures inside an hour, depending on whether the sun is out or the cloud is; our row's 19C day over a 9C night is that swing. Layers are not optional. The record: humidity 72 percent, 9.7 hours of sun and AQI 42.