Climate averages 1991–2020

San Miguel, El Salvador weather
in January.

A very hot, very dry month: the 4th warmest and the driest of the year.

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

Average high 34.7°C Daytime mean, January
Average low 22.4°C Night-time mean, January
Rainfall 1.2 mm fewer than one day with ≥1 mm
Daylight 11 h Sunrise to sunset, per day
Every month in San Miguel · average highYear overview

January is a very hot month in San Miguel, El Salvador: daytime highs average 34.7°C and nights cool to about 22.4°C. By daytime temperature it is the 4th warmest of the 12 months.

Expect about 1.2 mm of rain on fewer than one day, which makes January a very dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 11 h 25 min on an average January day.

The nearest other city in this atlas is Soyapango (107 km away). In January its highs average 29.7°C, 5.0°C cooler than San Miguel, El Salvador, with 1.9 mm of rain.

Among the 6 cities listed in El Salvador, San Miguel, El Salvador ranks 1st of 6 for the warmest January highs and 1st of 6 for the driest January (rainfall, lowest first). The mean January high of those 6 cities is 30.7°C; San Miguel, El Salvador is 4.0°C warmer than that mean.

From January to February, average highs rise by 1.0°C to 35.7°C, and monthly rainfall rises from 1.2 mm to 1.4 mm.

The annual picture

January 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. 2025303540 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 3500

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

Every month, side by side

San Miguel, El Salvador climate table

1991–2020
Monthly climate averages for San Miguel, El Salvador, 1991–2020
MonthAverage highHigh / lowAverage lowRainfall mm/monthRain days ≥1 mm/dayDaylight hours/dayDay­light h/day
January, selected 34.7°C22.4°C22.4°C1.20.411.411 h
February 35.7°C23.3°C23.3°C1.40.311.712 h
March 36.1°C24.5°C24.5°C8.62.112.012 h
April 35.5°C25.6°C25.6°C449.112.412 h
May 33.1°C25.0°C25.0°C25822.712.713 h
June 31.6°C24.0°C24.0°C29123.612.913 h
July 33.2°C24.1°C24.1°C19418.912.813 h
August 32.6°C24.1°C24.1°C27122.512.613 h
September 30.9°C23.6°C23.6°C34326.712.212 h
October 30.3°C23.1°C23.1°C30424.011.812 h
November 31.5°C22.3°C22.3°C618.811.512 h
December 33.6°C22.0°C22.0°C5.71.311.311 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

January in nearby cities

Distance from San Miguel

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 San Miguel) is explained once on the San Miguel, El Salvador year overview and on the Sources, method and limits page.