Climate and average weather in Irapuato

In Irapuato, the summers are hot, fairly dry, and mostly clear and the winters are warm and mostly clear.

Best: early January to late March

Over the course of the year, the temperature in Irapuato typically varies from 9°C to 32°C, and is rarely below 5°C or above 35°C. May is the hottest month of the year, while January is the coldest.

Based on the travel score, the best times of year to visit Irapuato for warm-weather activities are from early January to late March and mid October to late December.

Hottest
May
32°
Coldest
Jan
Wettest
Jul
149 mm
Driest
Dec
4 mm
Rain / yr
651 mm
85 wet days
Daylight
10.7–13.3 h
shortest–longest
Elevation
1,751 m
20.7°N
Clearest
Feb
32% cloud

Irapuato is municipal seat of Irapuato, State of Guanajuato, Mexico.

Air quality
Elevated
PM10 65.5 µg/m³ · 2018
Density
451/km²
people per km²
Founded
1547

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Irapuato weather by month, at a glance

The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.

Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around early January to late March.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

Daily average highs and lows in Irapuato, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.

The hot season lasts 2.6 months, from March 29 to June 15, with daily high temperatures above 30°C. The hottest month of the year in Irapuato is May, with an average high of 32°C and low of 16°C.

The cool season lasts 2.2 months, from December 4 to February 8, with daily high temperatures below 25°C. The coldest month of the year in Irapuato is January, with an average low of 9°C and high of 24°C.

Days typically run about 14°C warmer than nights, with the widest day–night swing (around 17°C) in April.

10°15°20°25°30°35°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan249
Feb2610
Mar2912
Apr3114
May3216
Jun3017
Jul2816
Aug2716
Sep2715
Oct2714
Nov2611
Dec249

Average hourly temperature in Irapuato

A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on May afternoons, near 32°C, and coldest before dawn in January, near C.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM

Irapuato weather by month

Every month at a glance. Click a month for its detailed page.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 101.610.98.7
Feb26° / 10°101.511.38.5
Mar29° / 12°101.611.97.4
Apr31° / 14°9212.55.6
May32° / 16°366.6134.7
Jun30° / 17°12714.113.24.7
Jul28° / 16°14917.813.15.3
Aug27° / 16°13516.412.75.5
Sep27° / 15°11514.512.15.8
Oct27° / 14°376.111.57.2
Nov26° / 11°102.1118.3
Dec24° / 4110.88.8

Chance of rain

How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.

Irapuato gets about 651 mm of precipitation a year. On a typical day the chance of rain is some rain, but that rises and falls sharply with the seasons.

The wetter season lasts 4.7 months, from around May 23 to Oct 11, peaking in July at about 63% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Dec 5.

July is the wettest month by volume, with 149 mm over about 18 wet days; December is the driest, with 4 mm.

0%10%20%30%40%50%60%70%JanFebMarAprMayJunJulAugSepOctNovDecdrierwetterdriermostly drysome rainoften wetvery wetJul 2 · 63%Dec 5 · 2%
Rain on a day (%)Rain days
Jan52
Feb52
Mar52
Apr72
May217
Jun4714
Jul5618
Aug5416
Sep4715
Oct206
Nov72
Dec31

Monthly rainfall

Over a full year, Irapuato collects about 651 mm of rain across 85 wet days — roughly 54 mm in an average month.

It doesn’t fall evenly. July is the wettest month with 149 mm, while December is the driest at just 4 mm. The three wettest months alone bring about 63% of the year’s total.

0255075100125150175JanFebMarAprMayJunJulAugSepOctNovDec10101093612714913511537104
Rainfall (mm)Rain days
Jan102
Feb102
Mar102
Apr92
May367
Jun12714
Jul14918
Aug13516
Sep11515
Oct376
Nov102
Dec41

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

How often the daytime sky is clear, partly cloudy or overcast.

In Irapuato, the average share of the sky covered by clouds shows significant seasonal variation over the course of the year.

The clearer part of the year begins around October 23 and lasts for 7.5 months, ending around June 8. The clearest month is March, when the sky is clear, mostly clear, or partly cloudy 79% of the time on average.

The cloudier part of the year begins around June 9 and lasts for 4.5 months, ending around October 22. The cloudiest month is September, when it is overcast or mostly cloudy 60% of the time.

0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JanFebMarAprMayJunJulAugSepOctNovDecMar 20 · 80%Sep 8 · 38%clearmostly clearpartly cloudymostly cloudyovercastclearercloudierclearer
Clearer (%)Cloudier (%)
Jan6931
Feb7624
Mar7921
Apr7327
May7426
Jun5545
Jul4753
Aug4753
Sep4060
Oct5743
Nov7624
Dec7030

Daylight, sunrise and sunset

DaylightNight

Hours of daylight through the year, with sunrise and sunset times.

The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around June 18, brings about 13 h 18 min of light; the shortest, around December 17, only 10 h 42 min — a swing of roughly 2 h 36 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan10.97:296:21
Feb11.37:216:39
Mar11.96:596:51
Apr12.56:317:00
May13.06:127:11
Jun13.26:087:23
Jul13.16:177:25
Aug12.76:287:11
Sep12.16:366:43
Oct11.56:456:16
Nov11.07:016:01
Dec10.87:196:04

Sunny days

How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.

Irapuato averages about 14 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 5 and 21 days.

The sunnier stretch runs 7.3 months, from around Oct 25 to Jun 3. The sunniest month is February, with roughly 20 sunny days (bright).

The greyest month is September, down near 5 sunny days — about 72% fewer than the February peak.

0510152025JanFebMarAprMayJunJulAugSepOctNovDecsunniergreyersunniergloomymixedbrightbrilliantFeb 2121 daysSep 45 days
Sunny daysSky
Jan17Bright
Feb18Bright
Mar20Bright
Apr17Bright
May17Bright
Jun9Mixed
Jul7Gloomy
Aug7Gloomy
Sep5Gloomy
Oct11Mixed
Nov18Bright
Dec18Bright

Humidity comfort

DryComfortableHumidMuggyOppressiveMiserable

Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.

Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.

In Irapuato, how humid it feels changes noticeably over the year.

The more humid part of the year lasts 4.2 months, from around June 2 to October 8. The muggiest month is June, when the air feels humid, muggy or worse about 19% of the time.

The most comfortable stretch runs from around October 9 to June 1, and April is the most comfortable month — the air is dry or comfortable 100% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecApr 21 · 100%Jun 30 · 72%humidcomfortabledrycomfortablehumidcomfortable
Dry (%)Comfortable (%)Humid (%)
Jan10000
Feb10000
Mar10000
Apr10000
May88111
Jun463519
Jul265618
Aug265519
Sep314722
Oct70255
Nov9640
Dec10000

Wind

Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.

This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.

Wind in Irapuato is steady company: average speeds sit near 9 km/hcalm — in every month of the year, with no meaningful windy or calm season.

051015JanFebMarAprMayJunJulAugSepOctNovDeccalmlight breezeOct 4 · 10 km/hJul 12 · 8 km/h
Wind speed (km/h)Feels
Jan8calm
Feb9calm
Mar9calm
Apr9calm
May9calm
Jun8calm
Jul8calm
Aug8calm
Sep9calm
Oct9calm
Nov9calm
Dec8calm

Hazard calendar for Irapuato

In seasonPeak

When the seasonal hazards worth planning around — the rainy season, tropical-cyclone risk and dust haze — are active through the year.

Irapuato's rainy season runs June–September, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Best time to visit Irapuato

TravelBeach/poolTemperatureCloudsPrecipitation

To characterize how pleasant the weather is in Irapuato throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.

Around mid March, Irapuato is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.

Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.

The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Irapuato for general outdoor tourist activities is from mid October to late March, with a peak score in the first week of December.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timetravel scoretemperaturecloudsprecipitationDec 5 · 8.8

The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Travel score (0–10)Rating
Jan8.7ideal
Feb8.5ideal
Mar7.4good
Apr5.7good
May4.7fair
Jun4.7fair
Jul5.3fair
Aug5.4fair
Sep5.8good
Oct7.2good
Nov8.3ideal
Dec8.8ideal

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Irapuato for hot-weather activities is from mid October to late May, with a peak score in the last week of March.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationMar 23 · 8.8

The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

What to pack for Irapuato, by month

EssentialRecommendedOptional

Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.

For a warm-season trip around May (highs near 32°C), the essentials are light clothes and sun protection. In the cold season around January (highs near 24°C), pack light clothes and sun protection.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In May, Irapuato sees daytime highs around 32°C and nights near 16°C. Pack light clothes and sun protection. About 7 days see rain.

UV index (midday) in Irapuato by month

LowModerateHighVery highExtreme

Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.

Under clear skies, the midday UV index in Irapuato peaks around June 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highJun 13UV 14Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun14Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec7Very high

Average hourly UV index in Irapuato

LowModerateHighVery highExtreme

Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.

The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.

UV falls off far faster than brightness as the sun drops, so even in June the burn window is concentrated in the middle of the day: about 9 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.

JanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM
UV ≥ 3 (h/day)UV ≥ 6 (h/day)
Jan6.54
Feb75
Mar86
Apr8.56.5
May8.56.5
Jun97
Jul8.56.5
Aug8.56.5
Sep85.5
Oct7.55.5
Nov6.54
Dec63

Air quality in Irapuato by month

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see which months the air is worst, not just the yearly average.

Air quality in Irapuato is worst in May — around 21 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1521 µg/m³Oct 1614 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb17Moderate
Mar17Moderate
Apr17Moderate
May21Moderate
Jun15Moderate
Jul17Moderate
Aug15Moderate
Sep16Moderate
Oct13Moderate
Nov16Moderate
Dec20Moderate
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Irapuato is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.

0%25%50%75%100%JanFebMarAprMayJunJulAugSepOctNovDecfrost-free year round
Frost-free chance (%)Frost nights
Jan1000
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

Growing degree days

Degree days (base 10°C)Frost-free shaded

Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Irapuato banks about 3,748 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around May.

01,0002,0003,0004,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan191
Feb226
Mar317
Apr374
May427
Jun391
Jul359
Aug357
Sep329
Oct317
Nov254
Dec206

Solar energy

Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.

Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.

Irapuato receives about 6.1 kWh/m² a day of solar energy on average — intense — with a clear seasonal swing between 4.8 and 7.6 kWh/m².

The brighter stretch of the year lasts 6.1 months, from around Feb 19 to Aug 23. The brightest month is April, averaging about 7.5 kWh/m² (intense).

The dimmest month is December, down near 4.8 kWh/m² — roughly 36% less than the April peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmerdimmoderatebrightintenseApr 267.6 kWhDec 204.8 kWh
Solar energy (kWh/m²)Level
Jan5.0Bright
Feb5.9Bright
Mar6.9Intense
Apr7.5Intense
May7.5Intense
Jun6.8Intense
Jul6.5Intense
Aug6.3Intense
Sep5.6Bright
Oct5.4Bright
Nov5.1Bright
Dec4.8Bright

Where is Irapuato?

Irapuato sits at 20.7°N, 101.4°W, 1,751 m above sea level, in Mexico. The nearest listed city is Salamanca, 20 km away.

Topography around Irapuato

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Irapuato.

Within 3 km, the terrain around Irapuato has only modest variations in elevation — a maximum elevation change of 21 m around an average of 1,721 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 504 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,284 m.

The land around Irapuato is covered by artificial surfaces (80%) within 3 km, cropland (58%) within 16 km, and cropland (36%) and shrubs (29%) within 80 km.

3 km
21 m
16 km
504 m
80 km
1,284 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Salamanca 20 km · Romita 28 km · Abasolo 31 km · Silao de la Victoria 31 km · Valle de Santiago 36 km · Marfil 37 km · Juventino Rosas 38 km · Guanajuato 40 km

Mexico travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 / 127 V · 60 Hz
Prices
≈ 54% of US
price level, 2025
GDP per capita
$13,889
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
12.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 440
Religion
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Irapuato (20.671°, -101.3558°, elevation 1,751 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).