Climate averages 1991–2020
Jalapa weather
in September.
A warm, very wet month: the 8th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Jalapa: daytime highs average 24.5°C and nights cool to about 16.8°C. By daytime temperature it is the 8th warmest of the 12 months.
Expect about 216 mm of rain on roughly 25 days, which makes September a very wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 12 h 13 min on an average September day.
The nearest other city in this atlas is Jutiapa (41 km away). In September its highs average 27.3°C, 2.8°C warmer than Jalapa, with 236 mm of rain.
Among the 23 cities listed in Guatemala, Jalapa ranks 13th of 23 for the warmest September highs and 3rd of 23 for the driest September (rainfall, lowest first). The mean September high of those 23 cities is 24.7°C; Jalapa is 0.2°C cooler than that mean.
From September to October, average highs fall by 0.8°C to 23.7°C, and monthly rainfall falls from 216 mm to 143 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
Jalapa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 23.8°C13.5°C | 13.5°C | 6.1 | 2.1 | 11.411 h |
| February | 25.3°C13.9°C | 13.9°C | 4.5 | 1.3 | 11.712 h |
| March | 26.7°C14.8°C | 14.8°C | 12 | 3.2 | 12.012 h |
| April | 27.6°C16.4°C | 16.4°C | 41 | 7.3 | 12.512 h |
| May | 26.2°C17.2°C | 17.2°C | 143 | 17.7 | 12.813 h |
| June | 24.8°C17.2°C | 17.2°C | 215 | 24.3 | 13.013 h |
| July | 24.6°C16.6°C | 16.6°C | 114 | 18.7 | 12.913 h |
| August | 24.9°C16.7°C | 16.7°C | 138 | 20.1 | 12.613 h |
| September, selected | 24.5°C16.8°C | 16.8°C | 216 | 24.9 | 12.212 h |
| October | 23.7°C16.3°C | 16.3°C | 143 | 18.8 | 11.812 h |
| November | 23.2°C14.9°C | 14.9°C | 32 | 6.1 | 11.511 h |
| December | 23.4°C13.9°C | 13.9°C | 11 | 2.6 | 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
- Jutiapa in SeptemberGuatemala · 41 kmHigh 27.3°C · Low 19.3°C · 236 mm rain
- San José Pinula in SeptemberGuatemala · 46 kmHigh 21.7°C · Low 13.6°C · 322 mm rain
- Chiquimula in SeptemberGuatemala · 51 kmHigh 28.5°C · Low 21.5°C · 223 mm rain
- Santa Catarina Pinula in SeptemberGuatemala · 55 kmHigh 23.9°C · Low 15.5°C · 322 mm rain
- Villa Canales in SeptemberGuatemala · 61 kmHigh 25.2°C · Low 17.1°C · 322 mm rain
- Villa Nueva in SeptemberGuatemala · 65 kmHigh 24.6°C · Low 16.7°C · 322 mm rain
- San Juan Sacatepéquez in SeptemberGuatemala · 71 kmHigh 22.6°C · Low 13.8°C · 204 mm rain
- Santa Ana, El Salvador in SeptemberEl Salvador · 86 kmHigh 28.5°C · Low 20.9°C · 213 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 Jalapa) is explained once on the Jalapa year overview and on the Sources, method and limits page.