Climate averages 1991–2020
Retalhuleu weather
in October.
A warm, very wet month: the coolest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
October is a warm month in Retalhuleu: daytime highs average 27.7°C and nights cool to about 21.7°C. By daytime temperature it is the coolest month of the year.
Expect about 384 mm of rain on roughly 28 days, which makes October a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 49 min on an average October day.
The nearest other city in this atlas is Mazatenango (19 km away). In October its highs average 26.7°C, 1.0°C cooler than Retalhuleu, with 541 mm of rain.
Among the 23 cities listed in Guatemala, Retalhuleu ranks 3rd of 23 for the warmest October highs and 20th of 23 for the driest October (rainfall, lowest first). The mean October high of those 23 cities is 24.0°C; Retalhuleu is 3.7°C warmer than that mean.
From October to November, average highs rise by 0.6°C to 28.3°C, and monthly rainfall falls from 384 mm to 116 mm.
The annual picture
October 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
Retalhuleu climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 30.0°C20.3°C | 20.3°C | 18 | 4.9 | 11.411 h |
| February | 31.1°C20.7°C | 20.7°C | 15 | 3.8 | 11.712 h |
| March | 31.6°C21.6°C | 21.6°C | 36 | 8.4 | 12.012 h |
| April | 31.5°C22.4°C | 22.4°C | 93 | 14.4 | 12.512 h |
| May | 29.8°C22.5°C | 22.5°C | 351 | 27.0 | 12.813 h |
| June | 28.5°C22.2°C | 22.2°C | 374 | 28.4 | 13.013 h |
| July | 28.9°C22.2°C | 22.2°C | 287 | 27.0 | 12.913 h |
| August | 28.8°C22.2°C | 22.2°C | 361 | 28.5 | 12.613 h |
| September | 28.1°C21.9°C | 21.9°C | 456 | 29.2 | 12.212 h |
| October, selected | 27.7°C21.7°C | 21.7°C | 384 | 27.7 | 11.812 h |
| November | 28.3°C21.4°C | 21.4°C | 116 | 15.5 | 11.511 h |
| December | 29.2°C20.5°C | 20.5°C | 27 | 6.0 | 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
October in nearby cities
- Mazatenango in OctoberGuatemala · 19 kmHigh 26.7°C · Low 20.3°C · 541 mm rain
- Coatepeque in OctoberGuatemala · 27 kmHigh 25.7°C · Low 19.2°C · 525 mm rain
- Quetzaltenango in OctoberGuatemala · 38 kmHigh 18.8°C · Low 13.6°C · 362 mm rain
- Totonicapán in OctoberGuatemala · 54 kmHigh 18.7°C · Low 12.5°C · 183 mm rain
- Malacatán in OctoberGuatemala · 58 kmHigh 26.2°C · Low 18.0°C · 330 mm rain
- Santa Lucía Cotzumalguapa in OctoberGuatemala · 74 kmHigh 26.5°C · Low 19.1°C · 336 mm rain
- Tapachula in OctoberMexico · 75 kmHigh 27.7°C · Low 20.5°C · 617 mm rain
- Chichicastenango in OctoberGuatemala · 76 kmHigh 20.3°C · Low 13.6°C · 181 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 Retalhuleu) is explained once on the Retalhuleu year overview and on the Sources, method and limits page.