La Oroya weather in September

In September, La Oroya sees average daytime highs of 10°C and overnight lows near -1°C, with 86 mm of precipitation across 21.3 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 10°C through the month. The sky is clear or mostly clear about 12% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is La Oroya's 5th-clearest and 3rd-windiest month. For the whole year in context, see La Oroya's year-round climate.

Daytime high
10°
9th warmest
Overnight low
-1°
5th coldest
Precipitation
86 mm
21.3 wet days
Daylight
11 h 54 min
6:00 AM – 5:56 PM
Cloud cover
65%
5th clearest
Wind
6 km/h
3rd windiest
Solar energy
6.53 kWh/m²
Travel score
1.6
out of 10

La Oroya is capital city of Yauli, Junín, Peru.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 10°C through the month.

A typical September day in La Oroya reaches about 10°C in the afternoon and slips back to -1°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 12°C. Set against its neighbours, September runs on par with August and on par with October.

-5°10°15°151015202530
Avg high (°C)Avg low (°C)
110-2
210-1
310-1
410-1
510-1
610-1
710-1
810-1
910-1
1010-1
1110-1
1210-1
1310-1
1410-1
1510-1
1610-1
1710-1
1810-1
1910-1
2010-1
2110-1
2210-1
2310-1
24100
25100
26100
27100
28100
29100
30100

How September really feels in La Oroya

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 30 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
30
wind chill below the day's low

The story in September is cold — wind chill drags the overnight "feels like" below the raw low.

La Oroya weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan11° / 20527.66.312.61.4
Feb11° / 20326.45.612.41.3
Mar10° / 20529.25.812.11.3
Apr10° / 110241.811.81.6
May10° / -1°5516.51.511.52.0
Jun10° / -2°237.51.111.32.3
Jul10° / -3°227.72.211.42.3
Aug10° / -2°3911.53.111.62.2
Sep10° / -1°8621.34.111.91.6
Oct10° / 13826.34.612.31.5
Nov11° / 14924.33.712.51.7
Dec11° / 19826.95.812.71.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 26% of September, with mostly cloudy or overcast conditions the remaining 62%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16040
25941
35842
45743
55545
65446
75248
85050
94852
104654
114456
124159
134060
143763
153664
163466
173268
183169
192971
202872
212773
222773
232674
242575
252575
262575
272575
282476
292476
302476

Chance of precipitation in September

Any precipitationSnow

La Oroya gets around 86 mm of rain and snow over 21.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 70% and peaks near 81% on the wettest days, and about 4 days bring snow. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)Snow chance (%)
1529
2539
35510
45610
55810
65910
76110
86211
96411
106511
116712
126812
136913
147013
157113
167314
177414
187515
197615
207616
217716
227716
237816
247816
257916
267916
278016
288016
298016
308116

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over September. Sunrise moves from 6:10 AM to 5:50 AM, and sunset from 5:57 PM to 5:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:105:57
211.86:095:57
311.86:095:57
411.86:085:57
511.86:075:56
611.86:075:56
711.86:065:56
811.96:055:56
911.96:055:56
1011.96:045:56
1111.96:035:56
1211.96:035:56
1311.96:025:56
1411.96:015:56
1511.96:015:56
1611.96:005:56
1711.95:595:56
1812.05:585:56
1912.05:585:56
2012.05:575:56
2112.05:565:56
2212.05:565:56
2312.05:555:56
2412.05:545:56
2512.05:545:56
2612.05:535:56
2712.15:525:56
2812.15:525:56
2912.15:515:56
3012.15:505:56

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.53 kWh/m².

For context, solar energy here swings from a low near 5.42 kWh/m² to a high of 6.74 kWh/m² in November across the year — September's 6.53 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.6Intense
256.6Intense
266.6Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
Planning a trip in September

Hazard calendar for La Oroya

In seasonPeak

None of La Oroya's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

La Oroya's rainy season runs October–April, when most of the year's rain falls.

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

Is September a good time to visit La Oroya?

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

1.6
Sightseeing
6th-best month of the year
Beach & pool
never really warm enough

September is a weaker month for outdoor sightseeing in La Oroya.

What to pack for La Oroya in September

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

In September, La Oroya sees daytime highs around 10°C and nights near -1°C. Pack a warm layer, rain gear and sun protection. About 21 days see rain.

a warm layerrain gearsun protection

UV index in La Oroya in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 16 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in La Oroya peaks around February 12 at about 20 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 12UV 20Jun 23UV 11
UV index (midday)Level
Jan19Extreme
Feb20Extreme
Mar18Extreme
Apr16Extreme
May14Extreme
Jun11Extreme
Jul11Extreme
Aug14Extreme
Sep16Extreme
Oct18Extreme
Nov17Extreme
Dec18Extreme
Location & terrain

Where is La Oroya?

La Oroya sits at 11.5°S, 75.9°W, 3,765 m above sea level, in Peru. The nearest listed city is Tarma, 25 km away.

Topography around La Oroya

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

Within 3 km, the terrain around La Oroya has large variations in elevation — a maximum elevation change of 773 m around an average of 4,026 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,125 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,914 m.

The land around La Oroya is covered by bare terrain (61%) and grassland (35%) within 3 km, grassland (92%) within 16 km, and grassland (73%) within 80 km.

3 km
773 m
16 km
1,125 m
80 km
4,914 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Tarma 25 km · Junín 41 km · Jauja 52 km · Huancayo 97 km · Chilca 98 km · Chosica 100 km · Cerro de Pasco 102 km · Yanacancha 102 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 La Oroya (-11.5189°, -75.8993°, elevation 3,765 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).