Climate averages 1991–2020

Chimaltenango weather
in May.

A warm, wet month: the joint 3rd warmest and the 8th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 24.1°C Daytime mean, May
Average low 15.4°C Night-time mean, May
Rainfall 132 mm 18 days with ≥1 mm
Daylight 13 h Sunrise to sunset, per day
Every month in Chimaltenango · average highYear overview

May is a warm month in Chimaltenango: daytime highs average 24.1°C and nights cool to about 15.4°C. By daytime temperature it is the joint 3rd warmest of the 12 months.

Expect about 132 mm of rain on roughly 18 days, which makes May a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 48 min on an average May day.

The nearest other city in this atlas is San Juan Sacatepéquez (20 km away). In May its highs average 24.5°C, about as warm as Chimaltenango, with 132 mm of rain.

Among the 23 cities listed in Guatemala, Chimaltenango ranks 17th of 23 for the warmest May highs and joint 2nd of 23 for the driest May (rainfall, lowest first). The mean May high of those 23 cities is 26.3°C; Chimaltenango is 2.2°C cooler than that mean.

From May to June, average highs fall by 1.5°C to 22.5°C, and monthly rainfall rises from 132 mm to 221 mm.

The annual picture

May in context

30-year average
Average highAverage low°C
Average daily high and low temperatures by month The same values are available in the monthly table below. Lines show mean daily maxima and minima, not a forecast interval. 1015202530 JanFebMarAprMayJunJulAugSepOctNovDec

Monthly rainfall

Average total · mm
Average monthly rainfall totalsEach bar is a mean monthly total over 1991–2020. Full numbers are in the table. JanFebMarAprMayJunJulAugSepOctNovDec 2500

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Chimaltenango climate table

1991–2020
Monthly climate averages for Chimaltenango, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 22.5°C12.1°C12.1°C6.31.811.411 h
February 24.1°C12.6°C12.6°C5.11.311.712 h
March 25.2°C13.5°C13.5°C153.812.012 h
April 25.5°C14.7°C14.7°C517.912.512 h
May, selected 24.1°C15.4°C15.4°C13217.712.813 h
June 22.5°C15.2°C15.2°C22123.913.013 h
July 22.7°C14.7°C14.7°C11617.312.913 h
August 23.0°C14.9°C14.9°C13619.112.613 h
September 22.4°C15.0°C15.0°C20424.112.212 h
October 21.7°C14.5°C14.5°C15219.011.812 h
November 21.5°C13.3°C13.3°C417.111.511 h
December 22.0°C12.5°C12.5°C132.811.311 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

May in nearby cities

Distance from Chimaltenango

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 limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Chimaltenango) is explained once on the Chimaltenango year overview and on the Sources, method and limits page.

San Juan Sacatepéquez lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.