September weather forecast
Guatemala

September in Guatemala marks the beginning of the transition towards the end of the rainy season. Following the peak wet month of August and preceding the significantly less rainy month of October, September experiences slightly reduced rainfall levels alongside continued warm temperatures.

Across the country, temperatures during September generally range between 19°C (66.2°F) to 29°C (84.2°F), though there are regional variations due to Guatemala's geographical diversity. In Guatemala City, situated in the highlands, the average temperature in September varies from 16°C (60.8°F) to 27°C (80.6°F). Despite the daytime warmth and rainfall, the nights in these highland regions continue to be cooler.

Similarly, in the highland city of Antigua, September temperature patterns show an average range from 14°C (57.2°F) to 26°C (78.8°F). Due to its elevation, the city maintains relatively cool nights, despite the warm and rainy daytime conditions.

On the other hand, the coastal city of Puerto Barrios continues to experience warmer weather, with average temperatures in September fluctuating between 23°C (73.4°F) to 33°C (91.4°F). The lower altitude and close proximity to the sea are factors contributing to this region's consistently warmer climate.

In terms of precipitation, September witnesses a slight decrease in rainfall compared to August, with national averages dropping to 180mm (7.09"). This shift signals the gradual transition from the peak of the rainy season towards its end.

Compared to August, September exhibits similar temperature patterns, with negligible variations. However, the slight reduction in rainfall sets September apart, indicating the start of the shift away from the rainy season. As Guatemala progresses into October, this decrease in rainfall becomes more pronounced, marking a clear move towards the end of the rainy season.

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• Guatemala City - September »
  The most humid month in Guatemala City is September, with an average relative humidity of 84.5%. September is the most humid month in Guatemala City, with an average relative humidity of 84.5%.
• Mixco - September »
  On the first day of September in Mixco sunrise is at 05:50 and sunset at 18:14. In Mixco in September, it is raining for 28.7 days, with typically 269mm (10.59") of accumulated precipitation.
• Villa Nueva - September »
  In Villa Nueva, in September, during 28.7 rainfall days, 269mm (10.59") of precipitation is typically accumulated. On the first day of September in Villa Nueva, Guatemala, sunrise is at 05:50 and sunset at 18:13.
• Quetzaltenango - September »
  In Quetzaltenango, Guatemala, during September, the rain falls for 28.8 days and regularly aggregates up to 283mm (11.14") of precipitation. The most humid month in Quetzaltenango is September, with an average relative humidity of 87%.
• Escuintla - September »
  
• San Juan Sacatepéquez - September »
  The most humid month in San Juan Sacatepéquez is September, with an average relative humidity of 90%. In San Juan Sacatepéquez, in September, during 28.7 rainfall days, 269mm (10.59") of precipitation is typically accumulated.
• Villa Canales - September »
  On the first day of September in Villa Canales, sunrise is at 05:50 and sunset at 18:13. Villa Canales greets September with an average high-temperature of a still moderately hot 26°C (78.8°F), marking a slight deviation from the preceding month.
• Chinautla - September »
  The month with the most rainfall in Chinautla is September, when 211mm (8.31") of precipitation is typically aggregated. September sees a sudden jump in rainfall to 211mm (8.31"), making it the rainiest month of the year in Chinautla.
• Chimaltenango - September »
  In September, Chimaltenango, Guatemala, sees the last of the significant rainfall for the year with precipitation levels climbing further to 269mm (10.59"), the highest for the year. With an average relative humidity of 90%, September is the most humid month in Chimaltenango.
• Amatitlán - September »
  In Amatitlán, in September, during 28.7 rainfall days, 269mm (10.59") of precipitation is typically accumulated. With an average relative humidity of 90%, September is the most humid month in Amatitlán.
• Puerto Barrios - September »
  With an average sea temperature of 29.8°C (85.6°F), September is the month with the warmest seawater in Puerto Barrios. The month with the warmest seawater in Puerto Barrios is September, with an average sea temperature of 29.8°C (85.6°F).
• Santa Lucía Cotzumalguapa - September »
  With an average relative humidity of 84%, September is the most humid month in Santa Lucía Cotzumalguapa, Guatemala. In Santa Lucía Cotzumalguapa, in September, during 29.4 rainfall days, 230mm (9.06") of precipitation is typically accumulated.