Climate averages 1991–2020

Ciudad Nezahualcoyotl weather
by month.

See how the year changes. April has the highest average daily maximum; December has the lowest average monthly rainfall.

Pleasant-weather months by our simple rule: JanuaryFebruaryMarchAprilMayNovemberDecember

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

Warmest month 25.8°C April, average high
Coolest month 6.4°C January, average low
Wettest month 159 mm August, monthly total
Driest month 6.3 mm December, monthly total
The year at a glance · average highYear overview

Across the year Ciudad Nezahualcoyotl averages a daytime high of 22.4°C and a nighttime low of 10.1°C, with about 740 mm of rain on roughly 113 days. April is the warmest month (average high 25.8°C) and January the coolest (20.4°C). August is the wettest month with 159 mm; December is the driest with 6.3 mm.

Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): January, February, March, April, May, November and December. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.

The annual picture

A year in Ciudad Nezahualcoyotl

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. 051015202530 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 2000

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

Every month, side by side

Ciudad Nezahualcoyotl climate table

1991–2020
Monthly climate averages for Ciudad Nezahualcoyotl, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January 20.4°C6.4°C6.4°C102.211.111 h
February 22.6°C7.6°C7.6°C8.11.811.511 h
March 24.6°C9.0°C9.0°C9.02.812.012 h
April 25.8°C10.8°C10.8°C184.112.613 h
May 25.7°C12.1°C12.1°C297.113.013 h
June 23.5°C12.9°C12.9°C11816.113.313 h
July 21.8°C12.1°C12.1°C14122.113.213 h
August 21.7°C12.3°C12.3°C15921.712.813 h
September 20.8°C12.1°C12.1°C15119.412.312 h
October 20.6°C10.3°C10.3°C7210.411.712 h
November 20.5°C8.3°C8.3°C173.611.211 h
December 20.6°C7.1°C7.1°C6.31.311.011 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

Nearby cities

Distance from Ciudad Nezahualcoyotl

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
What do the high and low temperatures mean?

We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.

How is a rain day counted?

A local calendar day (standard time, UTC-6, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.

Where do the numbers come from?

ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 19.40°, -99.00° (2 km from the city centre), adjusted down by 0.4°C for the difference between the city's elevation (2,235 m) and the cell's (2,181 m). Rain comes from the 0.25° cell at 19.50°, -99.00°. Ecatepec de Morelos, Gustavo Adolfo Madero and Chicoloapan lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells. These are model estimates, not weather-station readings; coast, hills and city streets can differ.

Does this page show sunshine, humidity or sea temperature?

No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.