Climate averages 1991–2020

Caldas weather
in September.

A warm, very wet month: the joint 4th warmest and the 8th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 23.2°C Daytime mean, September

Average low 13.0°C Night-time mean, September

Rainfall 253 mm 26 days with ≥1 mm

Daylight 12 h Sunrise to sunset, per day

September is a warm month in Caldas: daytime highs average 23.2°C and nights cool to about 13.0°C. By daytime temperature it is the joint 4th warmest of the 12 months.

Expect about 253 mm of rain on roughly 26 days, which makes September a very wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 09 min on an average September day.

The nearest other city in this atlas is Medellín (19 km away). In September its highs average 24.8°C, 1.6°C warmer than Caldas, with 247 mm of rain.

Among the 46 cities listed in Colombia, Caldas ranks joint 34th of 46 for the warmest September highs and joint 40th of 46 for the driest September (rainfall, lowest first). The mean September high of those 46 cities is 26.4°C; Caldas is 3.2°C cooler than that mean.

From September to October, average highs fall by 1.3°C to 22.0°C, and monthly rainfall rises from 253 mm to 302 mm.

The annual picture

September in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Caldas climate table

1991–2020

Monthly climate averages for Caldas, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January	22.6°C13.0°C	13.0°C	111	18.0	11.812 h
February	23.2°C13.2°C	13.2°C	138	19.5	11.912 h
March	23.3°C13.5°C	13.5°C	214	25.6	12.112 h
April	22.6°C13.8°C	13.8°C	290	27.9	12.312 h
May	22.3°C13.8°C	13.8°C	347	28.8	12.412 h
June	22.8°C13.0°C	13.0°C	239	26.2	12.512 h
July	23.4°C12.4°C	12.4°C	198	24.4	12.412 h
August	24.0°C12.5°C	12.5°C	197	23.6	12.312 h
September, selected	23.2°C13.0°C	13.0°C	253	26.4	12.212 h
October	22.0°C13.5°C	13.5°C	302	28.4	12.012 h
November	21.2°C13.7°C	13.7°C	275	27.6	11.812 h
December	22.0°C13.4°C	13.4°C	169	21.9	11.812 h

Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.

Compare places

September in nearby cities

Distance from Caldas

Read the numbers correctly

Climate, not a promise.

These patterns help compare months. They cannot tell you the weather on a specific day of your trip.

Sources, method and limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Caldas) is explained once on the Caldas year overview and on the Sources, method and limits page.