Climate averages 1991–2020

Lomas de Zamora weather
in May.

A mild, moderately wet month: the 9th warmest and the 3rd driest of the year.

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

Average high 17.5°C Daytime mean, May
Average low 10.6°C Night-time mean, May
Rainfall 61 mm 6 days with ≥1 mm
Daylight 10 h Sunrise to sunset, per day
Every month in Lomas de Zamora · average highYear overview

May is a mild month in Lomas de Zamora: daytime highs average 17.5°C and nights cool to about 10.6°C. By daytime temperature it is the 9th warmest of the 12 months.

Expect about 61 mm of rain on roughly 6 days, which makes May a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 20 min on an average May day.

The nearest other city in this atlas is Avellaneda (11 km away). In May its highs average 17.3°C, about as warm as Lomas de Zamora, with 63 mm of rain.

Among the 67 cities listed in Argentina, Lomas de Zamora ranks 45th of 67 for the warmest May highs and joint 31st of 67 for the driest May (rainfall, lowest first). The mean May high of those 67 cities is 18.0°C; Lomas de Zamora is 0.5°C cooler than that mean.

From May to June, average highs fall by 3.0°C to 14.5°C, and monthly rainfall falls from 61 mm to 60 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. 05101520253035 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 1500

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

Every month, side by side

Lomas de Zamora climate table

1991–2020
Monthly climate averages for Lomas de Zamora, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 28.2°C19.6°C19.6°C877.414.214 h
February 26.9°C18.9°C18.9°C938.213.413 h
March 25.0°C17.3°C17.3°C857.412.312 h
April 21.2°C13.8°C13.8°C917.911.211 h
May, selected 17.5°C10.6°C10.6°C616.010.310 h
June 14.5°C7.7°C7.7°C605.99.910 h
July 13.6°C6.6°C6.6°C606.110.110 h
August 15.9°C8.0°C8.0°C625.810.811 h
September 17.7°C9.6°C9.6°C726.711.812 h
October 20.6°C12.5°C12.5°C1099.112.913 h
November 23.9°C15.2°C15.2°C938.413.914 h
December 26.9°C17.9°C17.9°C858.514.414 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 Lomas de Zamora

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 Lomas de Zamora) is explained once on the Lomas de Zamora year overview and on the Sources, method and limits page.

Laferrere, Isidro Casanova and Ezeiza lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.