Climate and average weather in Pacasmayo

In Pacasmayo, the weather is humid, warm, fairly dry, and mostly cloudy and remarkably steady, with daytime highs holding near warm levels all year. The wettest stretch peaks around March.

Best: early January to late December

Over the course of the year, the temperature in Pacasmayo typically varies from 16°C to 24°C, and is rarely below 14°C or above 27°C. February is the hottest month of the year, while August is the coldest.

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

Hottest
Feb
24°
Coldest
Aug
16°
Wettest
Mar
25 mm
Driest
Jul
0 mm
Rain / yr
86 mm
23 wet days
Daylight
11.6–12.4 h
shortest–longest
Elevation
12 m
7.4°S
Clearest
Jul
43% cloud

Pacasmayo is city.

Founded
1864

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

Pacasmayo 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 December.

Temperature through the year

Average highAverage lowShaded bands: 10–90% of days

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

Temperatures in Pacasmayo stay fairly even through the year, without a distinct hot or cool season. The warmest month is February, with an average high of 24°C and low of 21°C; the coolest is August, with an average low of 16°C and high of 19°C.

Days typically run about 3°C warmer than nights year-round.

10°15°20°25°30°JanFebMarAprMayJunJulAugSepOctNovDec
Avg high (°C)Avg low (°C)
Jan2320
Feb2421
Mar2421
Apr2320
May2118
Jun2017
Jul1916
Aug1916
Sep1916
Oct1916
Nov2017
Dec2118

Average hourly temperature in Pacasmayo

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 February afternoons, near 24°C, and coldest before dawn in August, near 16°C.

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

Pacasmayo 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
Jan23° / 20°113.212.47.6
Feb24° / 21°245.512.27.1
Mar24° / 21°256.312.17.1
Apr23° / 20°102.611.87.7
May21° / 18°20.611.78.0
Jun20° / 17°10.111.68.0
Jul19° / 16°0011.67.8
Aug19° / 16°00.111.87.7
Sep19° / 16°20.5127.4
Oct19° / 16°30.912.27.2
Nov20° / 17°30.812.37.3
Dec21° / 18°6212.47.4

Chance of rain

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

Pacasmayo gets about 86 mm of precipitation a year. On a typical day the chance of rain is mostly dry, but that rises and falls sharply with the seasons.

The wetter season lasts 4.0 months, from around Dec 17 to Apr 18, peaking in March at about 21% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Jun 5.

March is the wettest month by volume, with 25 mm over about 6 wet days; July is the driest, with 0 mm.

0%10%20%30%JanFebMarAprMayJunJulAugSepOctNovDecwetterdriermostly drysome rainMar 6 · 21%Jun 5 · 0%
Rain on a day (%)Rain days
Jan113
Feb196
Mar206
Apr93
May21
Jun00
Jul00
Aug00
Sep11
Oct31
Nov31
Dec62

Monthly rainfall

Over a full year, Pacasmayo collects about 86 mm of rain across 23 wet days — roughly 7 mm in an average month.

It doesn’t fall evenly. March is the wettest month with 25 mm, while July is the driest at just 0 mm. The three wettest months alone bring about 70% of the year’s total.

02550JanFebMarAprMayJunJulAugSepOctNovDec1124251021002336
Rainfall (mm)Rain days
Jan113
Feb246
Mar256
Apr103
May21
Jun10
Jul00
Aug00
Sep21
Oct31
Nov31
Dec62

Clouds and sunshine

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

In Pacasmayo, 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 21 and lasts for 5.6 months, ending around October 7. The clearest month is July, when the sky is clear, mostly clear, or partly cloudy 83% of the time on average.

The cloudier part of the year begins around October 8 and lasts for 6.4 months, ending around April 20. The cloudiest month is March, when it is overcast or mostly cloudy 84% 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 4 · 86%Mar 17 · 15%clearmostly clearpartly cloudymostly cloudyovercastcloudierclearercloudier
Clearer (%)Cloudier (%)
Jan3070
Feb1981
Mar1684
Apr4258
May6733
Jun7723
Jul8317
Aug8317
Sep6337
Oct4456
Nov3862
Dec3367

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 12 h 24 min of light; the shortest, around May 19, only 11 h 36 min — a swing of roughly 0 h 48 min.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMJanFebMarAprMayJunJulAugSepOctNovDec
Daylight (h)Sunrise (AM)Sunset (PM)
Jan12.46:166:39
Feb12.26:266:40
Mar12.16:266:29
Apr11.86:236:14
May11.76:256:04
Jun11.66:316:06
Jul11.66:366:12
Aug11.86:306:15
Sep12.06:146:11
Oct12.25:586:08
Nov12.35:536:14
Dec12.46:026:27

Sunny days

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

Pacasmayo averages about 8 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 1 and 15 days.

The sunnier stretch runs 5.1 months, from around Apr 22 to Sep 22. The sunniest month is July, with roughly 15 sunny days (mixed).

The greyest month is March, down near 2 sunny days — about 89% fewer than the July peak.

05101520JanFebMarAprMayJunJulAugSepOctNovDecgreyersunniergreyergloomymixedbrightJul 715 daysMar 171 days
Sunny daysSky
Jan4Gloomy
Feb2Gloomy
Mar2Gloomy
Apr6Gloomy
May12Mixed
Jun14Mixed
Jul15Mixed
Aug15Mixed
Sep10Mixed
Oct5Gloomy
Nov5Gloomy
Dec4Gloomy

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 Pacasmayo, how humid it feels changes dramatically over the year.

The more humid part of the year lasts 6.6 months, from around November 21 to June 10. The muggiest month is January, when the air feels humid, muggy or worse about 100% of the time.

The most comfortable stretch runs from around June 11 to November 20, and September is the most comfortable month — the air is dry or comfortable 86% of the time.

0%10%20%30%40%50%60%70%80%90%100%JanFebMarAprMayJunJulAugSepOctNovDecSep 17 · 87%Jan 1 · 0%oppressivehumidcomfortablemuggyhumidcomfortablehumid
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
Jan00296650
Feb00381161
Mar00677170
Apr00464860
May012652400
Jun03754900
Jul05739400
Aug17818300
Sep18512300
Oct07425100
Nov04057300
Dec05761730

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.

Across the year, average wind speed in Pacasmayo is typically light breeze, near 15 km/h, and varies moderately with the seasons.

The windier part of the year lasts 7.4 months, from around Apr 27 to Dec 6. The windiest month is August, averaging about 17 km/h (light breeze).

The calmer part of the year runs from around Dec 7 to Apr 26, with March the calmest month at about 12 km/h.

0510152025JanFebMarAprMayJunJulAugSepOctNovDeccalmerwindiercalmercalmlight breezebreezyAug 3 · 18 km/hMar 7 · 11 km/h
Wind speed (km/h)Feels
Jan13light breeze
Feb11calm
Mar12calm
Apr14light breeze
May17light breeze
Jun17light breeze
Jul17light breeze
Aug17light breeze
Sep17light breeze
Oct17light breeze
Nov16light breeze
Dec15light breeze

Best time to visit Pacasmayo

TravelBeach/poolTemperatureCloudsPrecipitation

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

Around late December, Pacasmayo 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, Pacasmayo suits general outdoor tourist activities for most of the year, with a peak score in the second week of May.

0246810JanFebMarAprMayJunJulAugSepOctNovDectravel scoretemperaturecloudsprecipitationMay 10 · 8.1

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
Jan7.5ideal
Feb7.2good
Mar7.1good
Apr7.7ideal
May8.0ideal
Jun8.0ideal
Jul7.8ideal
Aug7.7ideal
Sep7.4good
Oct7.2good
Nov7.4good
Dec7.4good

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 Pacasmayo for hot-weather activities is from late December to mid May, with a peak score in the third week of February.

024681012JanFebMarAprMayJunJulAugSepOctNovDecbest timebeach/pool scoretemperaturecloudsprecipitationFeb 19 · 6.3

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 Pacasmayo, 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.

Pacasmayo packs about the same all year — highs hold near 24°C. Across the year the things worth having are light clothes and sun protection.

Light clothing
Warm layer
Winter coat
Rain gear
Sun protection
Windbreaker

In February, Pacasmayo sees daytime highs around 24°C and nights near 21°C. Worth packing: light clothes and sun protection. About 6 days see rain.

Sea temperature near Pacasmayo

Average ocean temperature at the nearest coast, month by month, banded into swim-comfort zones — the other half of the beach question.

The sea offshore is warmest in February at about 22°C and coldest in October near 17°C.

It's comfortable for a long swim from Jan 9 to Apr 12 — about 3.1 months when the water holds above 20°C.

16°18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan20Refreshing
Feb22Refreshing
Mar22Refreshing
Apr20Cool
May19Cool
Jun18Cool
Jul18Cool
Aug17Cool
Sep17Cool
Oct17Cool
Nov18Cool
Dec19Cool

UV index (midday) in Pacasmayo 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 Pacasmayo peaks around February 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 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 15UV 15Jun 22UV 9
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun9Very high
Jul9Very high
Aug11Extreme
Sep11Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Average hourly UV index in Pacasmayo

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 8.5 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)
Jan8.56.5
Feb8.57
Mar8.56.5
Apr86
May7.55.5
Jun74.5
Jul74.5
Aug7.55
Sep7.55.5
Oct86.5
Nov86.5
Dec8.56.5
Almanac & agriculture

Growing season

Chance of a frost-free dayFrost-free year round

Pacasmayo 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. Pacasmayo banks about 3,418 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around February.

01,0002,0003,000JanFebMarAprMayJunJulAugSepOctNovDec
Growing degree days (°C·days)
Jan354
Feb355
Mar390
Apr330
May298
Jun255
Jul235
Aug220
Sep211
Oct226
Nov245
Dec299

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.

Pacasmayo receives about 5.9 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 5.1 and 6.6 kWh/m².

The brighter stretch of the year lasts 5.3 months, from around Aug 25 to Feb 1. The brightest month is November, averaging about 6.6 kWh/m² (intense).

The dimmest month is June, down near 5.1 kWh/m² — roughly 22% less than the November peak.

012345678JanFebMarAprMayJunJulAugSepOctNovDecbrighterdimmerbrighterdimmoderatebrightintenseNov 166.6 kWhJun 235.1 kWh
Solar energy (kWh/m²)Level
Jan6.2Intense
Feb5.9Bright
Mar5.8Bright
Apr5.8Bright
May5.4Bright
Jun5.1Bright
Jul5.2Bright
Aug5.7Bright
Sep6.2Intense
Oct6.4Intense
Nov6.6Intense
Dec6.3Intense

Where is Pacasmayo?

Pacasmayo sits at 7.4°S, 79.6°W, 12 m above sea level, in Peru. The nearest listed city is San Pedro de Lloc, 8.0 km away.

Topography around Pacasmayo

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

Within 3 km, the terrain around Pacasmayo has only modest variations in elevation — a maximum elevation change of 103 m around an average of 16 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 524 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,764 m.

The land around Pacasmayo is covered by bare terrain (45%) and water (37%) within 3 km, water (48%) and bare terrain (33%) within 16 km, and water (34%) and bare terrain (30%) within 80 km.

3 km
103 m
16 km
524 m
80 km
3,764 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
Nearby: San Pedro de Lloc 8.0 km · Guadalupe 19 km · Chepén 25 km · Paiján 47 km · Saña 54 km · Chocope 58 km · Monsefú 67 km · Santiago de Cao 72 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 Pacasmayo (-7.4006°, -79.5714°, elevation 12 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).