Ilo weather in January

In January, Ilo sees average daytime highs of 22°C and overnight lows near 20°C, with 4 mm of rain across 0.9 wet days and about 12.9 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 17% of the time in January, and the air most often feels humid.

Daylight stretches from about 13 hours at the start of January to 12 h 48 min by month's end. Set against the rest of the year, January is Ilo's 12th-clearest and 10th-windiest month. For the whole year in context, see Ilo's year-round climate.

Daytime high
22°
2nd warmest
Overnight low
20°
11th coldest
Rainfall
4 mm
0.9 wet days
Daylight
12 h 54 min
5:26 AM – 6:23 PM
Cloud cover
67%
12th clearest
Wind
11 km/h
10th windiest
Solar energy
7.01 kWh/m²
Travel score
7.8
out of 10

Ilo is city in Peru.

Density
181/km²
people per km²

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 22°C through the month.

A typical January day in Ilo reaches about 22°C in the afternoon and slips back to 20°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 23°C. Set against its neighbours, January runs about 1°C warmer than December and on par with February.

15°18°20°23°25°151015202531
Avg high (°C)Avg low (°C)
12119
22119
32119
42219
52219
62219
72219
82219
92219
102219
112219
122220
132220
142220
152220
162220
172220
182220
192220
202220
212220
222220
232220
242220
252220
262220
272220
282220
292220
302220
312220

Ilo weather by month

How January compares with the rest of the year at a glance. January is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 20°40.912.97.8
Feb23° / 20°41.212.67.9
Mar22° / 19°10.412.18.1
Apr21° / 18°00.111.68.1
May19° / 16°00.111.27.9
Jun18° / 15°00.1117.3
Jul17° / 14°10.411.16.7
Aug17° / 13°10.111.46.7
Sep17° / 14°00.111.96.9
Oct18° / 15°0012.47.3
Nov19° / 16°00.112.87.6
Dec21° / 18°10.2137.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of January, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13664
23565
33664
43565
53466
63565
73466
83466
93466
103466
113466
123466
133466
143466
153466
163565
173565
183664
193664
203664
213763
223862
233862
243961
253961
264060
273961
283961
294060
303961
313961

Chance of precipitation in January

Any precipitation

Ilo gets around 4 mm of rain over 0.9 wet days in January, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 3% and peaks near 4% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
12
22
32
43
53
63
73
83
93
103
113
124
134
144
154
164
174
184
194
204
213
223
233
243
253
263
273
283
293
303
313

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the humid band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 30% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
128810
218811
318712
418514
518415
618316
708218
808119
907921
1007822
1107624
1207525
1307327
1407228
1507129
1606931
1706832
1806733
1906634
2006436
2106337
2206238
2306139
2406040
2505941
2605842
2705743
2805644
2905545
3005446
3105347

Wind in January

Winds average 11 km/h in January.

Across January, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 13 hours at the start of January to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over January. Sunrise moves from 5:17 AM to 5:35 AM, and sunset from 6:20 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:176:20
213.05:186:20
313.05:186:20
413.05:196:21
513.05:206:21
613.05:206:21
713.05:216:21
813.05:216:22
913.05:226:22
1013.05:236:22
1113.05:236:22
1213.05:246:23
1313.05:246:23
1413.05:256:23
1513.05:266:23
1612.95:266:23
1712.95:276:23
1812.95:276:23
1912.95:286:23
2012.95:296:23
2112.95:296:23
2212.95:306:23
2312.95:306:23
2412.95:316:23
2512.95:316:23
2612.95:326:23
2712.85:336:23
2812.85:336:23
2912.85:346:23
3012.85:346:23
3112.85:356:23

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 7.01 kWh/m².

For context, solar energy here swings from a low near 4.21 kWh/m² to a high of 7.35 kWh/m² in December across the year — January's 7.01 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.1Intense
57.1Intense
67.1Intense
77.1Intense
87.1Intense
97.0Intense
107.0Intense
117.0Intense
127.0Intense
137.0Intense
147.0Intense
157.0Intense
167.0Intense
177.0Intense
187.0Intense
197.0Intense
207.0Intense
217.0Intense
227.0Intense
237.0Intense
247.0Intense
257.0Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
307.0Intense
317.0Intense
Planning a trip in January

Is January a good time to visit Ilo?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.8
Sightseeing
5th-best month of the year
5.4
Beach & pool
3rd-best month of the year

January is one of the better times to visit Ilo for general sightseeing.

What to pack for Ilo in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Ilo sees daytime highs around 22°C and nights near 20°C. Pack sun protection.

sun protection

Sea temperature near Ilo in January

The nearest coast averages about 22°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

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

It's comfortable for a long swim from Nov 27 to Apr 28 — about 5 months when the water holds above 20°C.

16°18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan22Refreshing
Feb22Refreshing
Mar22Refreshing
Apr21Refreshing
May19Cool
Jun19Cool
Jul18Cool
Aug17Cool
Sep17Cool
Oct18Cool
Nov20Cool
Dec21Refreshing

UV index in Ilo in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ilo peaks around February 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 10UV 15Jul 10UV 7
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar13Extreme
Apr11Extreme
May9Very high
Jun7Very high
Jul7Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec14Extreme
Location & terrain

Where is Ilo?

Ilo sits at 17.6°S, 71.3°W, 22 m above sea level, in Peru. The nearest listed city is San Antonio, 64 km away.

TacnaJacobo HunterCiudad SateliteArequipaSelva Alegre

Topography around Ilo

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

Within 3 km, the terrain around Ilo has only modest variations in elevation — a maximum elevation change of 192 m around an average of 66 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,476 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,396 m.

The land around Ilo is covered by water (40%), bare terrain (30%) and artificial surfaces (27%) within 3 km, water (51%) and bare terrain (46%) within 16 km, and bare terrain (58%) and water (38%) within 80 km.

3 km
192 m
16 km
1,476 m
80 km
3,396 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: San Antonio 64 km · Moquegua 65 km · Mollendo 98 km · Tacna 123 km · Jacobo Hunter 134 km · Ciudad Satelite 135 km · Arequipa 139 km · Selva Alegre 142 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 Ilo (-17.6319°, -71.3411°, elevation 22 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).