Cartagena Weather in September

In September, Cartagena averages a high of 32°C (89°F) and a low of 25°C (78°F), from 12 years of daily records (1973–2025).

32°C

Average high

89°F

25°C

Average low

78°F

38°C

Record high

100°F · September 5, 1980

21°C

Record low

70°F · September 18, 1974

What September Is Like in Cartagena

The September heat record, 38°C (100°F) on September 5, 1980, has stood for 45 years.
The coldest September reading, 21°C (70°F) on September 18, 1974, has not been matched in 51 years.
A typical September brings 0.5 days above 35°C (95°F).
September is the least predictable month in Cartagena: daytime highs vary more from day to day and year to year than in any other month.

At least 1 mm of rain falls on 36% of September days.

Average daytime high in Cartagena, every September since 1973

Warmest: 2012 (33.3°C)Latest: 2012 (33.3°C)10-year averageLong-run average (31.7°C)

See the weather in Cartagena on any September date, year by year.

Source: NOAA GHCN-Daily, Rafael Nunez (1971–2025). Averages cover 1973–2025. How we compute this