Climate and average weather in Arequipa

In Arequipa, the weather is mild, wet, and mostly clear and remarkably steady, with daytime highs holding near mild levels all year. The wettest stretch peaks around February.

Best: late April to early December

Over the course of the year, the temperature in Arequipa typically varies from 6°C to 21°C, and is rarely below 5°C or above 22°C. October is the hottest month of the year, while February is the coldest.

Based on the travel score, the best time of year to visit Arequipa for warm-weather activities is from late April to early December.

Hottest
Oct
21°
Coldest
Feb
10°
Wettest
Feb
225 mm
Driest
Jun
1 mm
Rain / yr
761 mm
118 wet days
Daylight
11.0–13.0 h
shortest–longest
Elevation
2,397 m
16.4°S
Clearest
Jul
17% cloud

Arequipa is city of Peru, capital of Arequipa region.

Density
1,840/km²
people per km²
Founded
1540

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

Arequipa 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 late April to early December.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Arequipa stay fairly even through the year, without a distinct hot or cool season. The warmest month is October, with an average high of 21°C and low of 10°C; the coolest is February, with an average low of 10°C and high of 17°C.

Days typically run about 10°C warmer than nights, with the widest day–night swing (around 13°C) in July.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan1710
Feb1710
Mar1710
Apr189
May208
Jun207
Jul196
Aug207
Sep219
Oct2110
Nov2010
Dec1910

Average hourly temperature in Arequipa

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 October afternoons, near 21°C, and coldest before dawn in February, near 10°C.

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

Arequipa 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
Jan17° / 10°19927.112.93.2
Feb17° / 10°22526.912.62.8
Mar17° / 10°18327.612.13.1
Apr18° / 591411.65.4
May20° / 61.611.28.0
Jun20° / 10.2118.4
Jul19° / 10.411.18.4
Aug20° / 20.611.58.5
Sep21° / 30.811.98.4
Oct21° / 10°7212.47.9
Nov20° / 10°123.512.87.3
Dec19° / 10°6412.9135.5

Chance of rain

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

Arequipa gets about 761 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.

The wetter season lasts 4.3 months, from around Dec 13 to Apr 23, peaking in February at about 97% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 16.

February is the wettest month by volume, with 225 mm over about 27 wet days; June is the driest, with 1 mm.

0%10%20%30%40%50%60%70%80%90%100%110%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainoften wetvery wetFeb 18 · 97%Jun 16 · 1%
Rain on a day (%)Rain days
Jan8727
Feb9627
Mar8828
Apr4714
May62
Jun10
Jul10
Aug21
Sep31
Oct62
Nov124
Dec4213

Monthly rainfall

Over a full year, Arequipa collects about 761 mm of rain across 118 wet days — roughly 63 mm in an average month.

It doesn’t fall evenly. February is the wettest month with 225 mm, while June is the driest at just 1 mm. The three wettest months alone bring about 80% of the year’s total.

050100150200250JanFebMarAprMayJunJulAugSepOctNovDec199225183596112371264
Rainfall (mm)Rain days
Jan19927
Feb22527
Mar18328
Apr5914
May62
Jun10
Jul10
Aug21
Sep31
Oct72
Nov124
Dec6413

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Arequipa, 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 April 22 and lasts for 6.6 months, ending around November 8. The clearest month is August, when the sky is clear, mostly clear, or partly cloudy 90% of the time on average.

The cloudier part of the year begins around November 9 and lasts for 5.4 months, ending around April 21. The cloudiest month is February, when it is overcast or mostly cloudy 95% 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%JanFebMarAprMayJunJulAugSepOctNovDecAug 23 · 91%Feb 21 · 4%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan793
Feb595
Mar892
Apr4258
May8020
Jun8614
Jul8911
Aug9010
Sep8515
Oct6634
Nov4753
Dec2278

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 January 1, brings about 13 hours of light; the shortest, around June 10, only 11 hours — a swing of roughly 2 hours.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.95:296:22
Feb12.65:446:17
Mar12.15:525:59
Apr11.65:575:35
May11.26:055:19
Jun11.06:165:17
Jul11.16:185:25
Aug11.56:075:34
Sep11.95:435:38
Oct12.45:205:42
Nov12.85:085:55
Dec13.05:136:11

Sunny days

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

Arequipa averages about 13 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 0 and 25 days.

The sunnier stretch runs 5.8 months, from around Apr 25 to Oct 18. The sunniest month is July, with roughly 25 sunny days (brilliant).

The greyest month is February, down near 0 sunny days — about 99% fewer than the July peak.

051015202530JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightbrilliantJul 2225 daysFeb 260 days
Sunny daysSky
Jan1Gloomy
Feb0Gloomy
Mar1Gloomy
Apr8Mixed
May21Bright
Jun23Brilliant
Jul26Brilliant
Aug25Brilliant
Sep22Bright
Oct15Mixed
Nov10Mixed
Dec3Gloomy

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 Arequipa, the air stays dry or comfortable essentially all year. Even in January, the muggiest month, it feels humid or worse only about 0% of the time — humidity is not something you need to plan around here.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecdry
Dry (%)Comfortable (%)
Jan991
Feb1000
Mar1000
Apr1000
May1000
Jun1000
Jul1000
Aug1000
Sep1000
Oct1000
Nov1000
Dec1000

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 Arequipa is steady company: average speeds sit near 6 km/hcalm — in every month of the year, with no meaningful windy or calm season.

0510JanFebMarAprMayJunJulAugSepOctNovDeccalmAug 16 · 7 km/hMar 2 · 5 km/h
Wind speed (km/h)Feels
Jan6calm
Feb5calm
Mar5calm
Apr6calm
May6calm
Jun6calm
Jul6calm
Aug7calm
Sep7calm
Oct7calm
Nov7calm
Dec6calm

Hazard calendar for Arequipa

In seasonPeak

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

Arequipa's monsoon runs January–March, when most of the year's rain falls.

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

Best time to visit Arequipa

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around early May, Arequipa is still near the start of its best-weather window — great conditions with the peak-season crowds not yet at full swing.

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 Arequipa for general outdoor tourist activities is from late April to late November, with a peak score in the last week of August.

0246810JanFebMarAprMayJunJulAugSepOctNovDecbest timetravel scoretemperaturecloudsprecipitationAug 28 · 8.6

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
Jan3.2poor
Feb2.8poor
Mar3.2poor
Apr5.4fair
May8.0ideal
Jun8.4ideal
Jul8.4ideal
Aug8.5ideal
Sep8.4ideal
Oct7.9ideal
Nov7.2good
Dec5.5fair

The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best times of year to visit Arequipa for hot-weather activities run from mid May to late June and again from late July to mid November, with a peak score in the last week of September.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebest timebeach/pool scoretemperaturecloudsprecipitationSep 27 · 4.9

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 Arequipa, 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.

Arequipa packs about the same all year — highs hold near 21°C. Across the year the things worth having are sun protection, a warm layer and rain gear.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In October, Arequipa sees daytime highs around 21°C and nights near 10°C. Pack sun protection.

UV index (midday) in Arequipa 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 Arequipa peaks around February 8 at about 17 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 8UV 17Jun 21UV 9
UV index (midday)Level
Jan17Extreme
Feb17Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun9Very high
Jul9Very high
Aug12Extreme
Sep14Extreme
Oct16Extreme
Nov14Extreme
Dec15Extreme

Average hourly UV index in Arequipa

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 February the burn window is concentrated in the middle of the day: about 9 hours a day reach index 3 (protection recommended), and 7.5 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)
Jan97.5
Feb97.5
Mar8.56.5
Apr86
May75
Jun6.54.5
Jul6.54.5
Aug7.55.5
Sep86.5
Oct8.57
Nov8.57
Dec97
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Arequipa 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. Arequipa banks about 1,444 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around October.

05001,0001,500JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan113
Feb95
Mar106
Apr115
May116
Jun95
Jul90
Aug114
Sep139
Oct163
Nov155
Dec144

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.

Arequipa receives about 6.4 kWh/m² a day of solar energy on average — intense — with a clear seasonal swing between 5.1 and 8.3 kWh/m².

The brighter stretch of the year lasts 4.5 months, from around Aug 18 to Jan 1. The brightest month is November, averaging about 8.2 kWh/m² (intense).

The dimmest month is March, down near 5.3 kWh/m² — roughly 36% less than the November peak.

0123456789JanFebMarAprMayJunJulAugSepOctNovDecdimmerbrighterdimmoderatebrightintenseNov 78.3 kWhMar 15.1 kWh
Solar energy (kWh/m²)Level
Jan5.9Bright
Feb5.3Bright
Mar5.3Bright
Apr5.8Bright
May5.8Bright
Jun5.4Bright
Jul5.6Bright
Aug6.3Intense
Sep7.3Intense
Oct8.0Intense
Nov8.3Intense
Dec7.3Intense

Where is Arequipa?

Arequipa sits at 16.4°S, 71.5°W, 2,397 m above sea level, in Peru. The nearest listed city is Selva Alegre, 3.0 km away.

What Arequipa looks like

Topography around Arequipa

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

Within 3 km, the terrain around Arequipa has significant variations in elevation — a maximum elevation change of 267 m around an average of 2,361 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,004 m; within 80 km, extreme variations in elevation — a maximum elevation change of 6,186 m.

The land around Arequipa is covered by artificial surfaces (73%) within 3 km, bare terrain (44%) and shrubs (27%) within 16 km, and bare terrain (66%) and grassland (20%) within 80 km.

3 km
267 m
16 km
3,004 m
80 km
6,186 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
Nearby: Selva Alegre 3.0 km · Ciudad Satelite 4.0 km · Jacobo Hunter 5.0 km · Cono Norte 10 km · El Pedregal 70 km · Mollendo 86 km · Moquegua 109 km · San Antonio 112 km

Peru travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B / C
220 V · 60 Hz
Prices
≈ 51% of US
price level, 2025
GDP per capita
$9,684
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
49%
of population, 2024
Homicide rate
8.6
per 100k, 2021
Road deaths
13.6
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 519
Religion
Catholic 76%Evangelical Christian 16%no religion 5%other religions 3%

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 Arequipa (-16.399°, -71.5375°, elevation 2,397 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).