Climate averages 1991–2020
San Juan Sacatepéquez weather
in September.
A warm, very wet month: the joint 7th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in San Juan Sacatepéquez: daytime highs average 22.6°C and nights cool to about 13.8°C. By daytime temperature it is the joint 7th warmest of the 12 months.
Expect about 204 mm of rain on roughly 24 days, which makes September a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 13 min on an average September day.
The nearest other city in this atlas is Chimaltenango (20 km away). In September its highs average 22.4°C, about as warm as San Juan Sacatepéquez, with 204 mm of rain.
Among the 23 cities listed in Guatemala, San Juan Sacatepéquez ranks 16th of 23 for the warmest September highs and joint 1st of 23 for the driest September (rainfall, lowest first). The mean September high of those 23 cities is 24.7°C; San Juan Sacatepéquez is 2.1°C cooler than that mean.
From September to October, average highs fall by 1.0°C to 21.6°C, and monthly rainfall falls from 204 mm to 152 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
San Juan Sacatepéquez climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 22.2°C10.8°C | 10.8°C | 6.3 | 1.8 | 11.411 h |
| February | 23.9°C11.3°C | 11.3°C | 5.1 | 1.3 | 11.712 h |
| March | 25.2°C12.1°C | 12.1°C | 15 | 3.8 | 12.012 h |
| April | 25.8°C13.5°C | 13.5°C | 51 | 7.9 | 12.512 h |
| May | 24.5°C14.3°C | 14.3°C | 132 | 17.7 | 12.813 h |
| June | 22.6°C14.0°C | 14.0°C | 221 | 23.9 | 13.013 h |
| July | 22.9°C13.5°C | 13.5°C | 116 | 17.3 | 12.913 h |
| August | 23.5°C13.6°C | 13.6°C | 136 | 19.1 | 12.613 h |
| September, selected | 22.6°C13.8°C | 13.8°C | 204 | 24.1 | 12.212 h |
| October | 21.6°C13.2°C | 13.2°C | 152 | 19.0 | 11.812 h |
| November | 21.2°C12.0°C | 12.0°C | 41 | 7.1 | 11.511 h |
| December | 21.8°C11.2°C | 11.2°C | 13 | 2.8 | 11.311 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
- Chimaltenango in SeptemberGuatemala · 20 kmHigh 22.4°C · Low 15.0°C · 204 mm rain
- Villa Nueva in SeptemberGuatemala · 22 kmHigh 24.6°C · Low 16.7°C · 322 mm rain
- Santa Catarina Pinula in SeptemberGuatemala · 23 kmHigh 23.9°C · Low 15.5°C · 322 mm rain
- Villa Canales in SeptemberGuatemala · 29 kmHigh 25.2°C · Low 17.1°C · 322 mm rain
- San José Pinula in SeptemberGuatemala · 31 kmHigh 21.7°C · Low 13.6°C · 322 mm rain
- Escuintla in SeptemberGuatemala · 49 kmHigh 27.5°C · Low 19.6°C · 421 mm rain
- Chichicastenango in SeptemberGuatemala · 56 kmHigh 20.8°C · Low 14.0°C · 265 mm rain
- Santa Lucía Cotzumalguapa in SeptemberGuatemala · 59 kmHigh 26.6°C · Low 19.5°C · 374 mm rain
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 limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for San Juan Sacatepéquez) is explained once on the San Juan Sacatepéquez year overview and on the Sources, method and limits page.
Chimaltenango lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.