Chosica weather in September

In September, Chosica sees average daytime highs of 22°C and overnight lows near 16°C, with 4 mm of rain across 1.3 wet days and about 11.9 hours of daylight. It is the 10th-warmest and 9th-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 62% 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 Chosica's 5th-clearest and 6th-windiest month. For the whole year in context, see Chosica's year-round climate.

Daytime high
22°
10th warmest
Overnight low
16°
2nd coldest
Rainfall
4 mm
1.3 wet days
Daylight
11 h 54 min
6:03 AM – 5:59 PM
Cloud cover
35%
5th clearest
Wind
4 km/h
6th windiest
Solar energy
6.53 kWh/m²
Travel score
8.5
out of 10

Chosica is town in Lima, 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 22°C through the month.

A typical September day in Chosica reaches about 22°C in the afternoon and slips back to 16°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 24°C. Set against its neighbours, September runs on par with August and on par with October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12216
22216
32216
42216
52216
62216
72216
82216
92216
102216
112216
122216
132216
142216
152216
162216
172216
182216
192216
202216
212216
222216
232216
242216
252216
262216
272216
282216
292216
302216

Chosica weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 17°6413.912.65.8
Feb23° / 17°10419.212.44.7
Mar23° / 17°8918.412.15.1
Apr23° / 17°266.411.77.1
May23° / 16°41.311.58.7
Jun22° / 16°00.111.39.0
Jul22° / 16°10.211.49.1
Aug22° / 16°10.211.69.1
Sep22° / 16°41.311.98.5
Oct22° / 16°92.712.37.9
Nov23° / 16°8212.57.8
Dec23° / 17°206.212.77.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 62% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 21%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
19010
29010
38812
48812
58713
68614
78515
88317
98317
108218
118119
128020
137921
147921
157822
167723
177723
187723
197624
207525
217525
227426
237426
247426
257327
267327
277327
287228
297228
307228

Chance of precipitation in September

Any precipitation

Chosica gets around 4 mm of rain over 1.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 4% and peaks near 6% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
12
22
32
43
53
63
73
83
93
103
113
123
134
144
154
164
175
185
195
205
216
226
236
246
256
266
276
286
296
306

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49910
59910
69820
79820
89820
99820
109820
119820
129730
139730
149640
159640
169550
179451
189361
199361
209271
219271
229181
239181
249181
259181
269091
279190
289190
299190
309190

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

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 6:14 AM to 5:53 AM, and sunset from 6:00 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:146:00
211.86:136:00
311.86:126:00
411.86:126:00
511.86:116:00
611.86:105:59
711.86:095:59
811.86:095:59
911.96:085:59
1011.96:075:59
1111.96:075:59
1211.96:065:59
1311.96:055:59
1411.96:055:59
1511.96:045:59
1611.96:035:59
1711.96:025:59
1812.06:025:59
1912.06:015:59
2012.06:005:59
2112.06:005:59
2212.05:595:59
2312.05:585:59
2412.05:575:59
2512.05:575:59
2612.05:565:59
2712.15:555:59
2812.15:555:59
2912.15:545:59
3012.15:535:59

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 5.22 kWh/m² to a high of 6.9 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
16.4Intense
26.4Intense
36.4Intense
46.4Intense
56.4Intense
66.4Intense
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
216.6Intense
226.6Intense
236.6Intense
246.6Intense
256.6Intense
266.6Intense
276.7Intense
286.7Intense
296.7Intense
306.7Intense
Planning a trip in September

Is September a good time to visit Chosica?

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

8.5
Sightseeing
5th-best month of the year
6.1
Beach & pool
5th-best month of the year

September is one of the better times to visit Chosica for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Chosica in September

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

In September, Chosica sees daytime highs around 22°C and nights near 16°C. Pack sun protection. Worth having: light clothes.

sun protectionlight clothes

Sea temperature near Chosica in September

The nearest coast averages about 17°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 46 km away) is warmest in February at about 21°C and coldest in October near 17°C.

It's comfortable for a long swim from Jan 3 to Apr 9 — about 3.2 months when the water holds above 20°C.

16°18°20°22°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb21Refreshing
Mar21Refreshing
Apr20Cool
May19Cool
Jun18Cool
Jul18Cool
Aug17Cool
Sep17Cool
Oct17Cool
Nov18Cool
Dec19Cool

UV index in Chosica in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chosica peaks around February 13 at about 16 (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 13UV 16Jun 21UV 9
UV index (midday)Level
Jan15Extreme
Feb17Extreme
Mar14Extreme
Apr13Extreme
May11Extreme
Jun9Very high
Jul10Very high
Aug12Extreme
Sep12Extreme
Oct14Extreme
Nov14Extreme
Dec14Extreme

Air quality in Chosica in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Chosica is worst in May — around 37 µg/m³ PM2.5 (poor), about 1.9× the cleanest month (January, 20 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 2237 µg/m³Jan 1820 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb22Moderate
Mar24Moderate
Apr31Moderate
May37Poor
Jun36Poor
Jul35Moderate
Aug33Moderate
Sep30Moderate
Oct26Moderate
Nov24Moderate
Dec23Moderate
Location & terrain

Where is Chosica?

Chosica sits at 11.9°S, 76.7°W, 831 m above sea level, in Peru. The nearest listed city is Santa Anita - Los Ficus, 31 km away.

Topography around Chosica

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

Within 3 km, the terrain around Chosica has large variations in elevation — a maximum elevation change of 882 m around an average of 1,070 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,964 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,661 m.

The land around Chosica is covered by bare terrain (76%) within 3 km, bare terrain (74%) within 16 km, and bare terrain (35%), grassland (25%) and water (22%) within 80 km.

3 km
882 m
16 km
2,964 m
80 km
5,661 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Santa Anita - Los Ficus 31 km · San Francisco De Borja 35 km · Lima 36 km · Villa Poeta José Gálvez Barrenechea 37 km · Santiago de Surco 39 km · Jesus Maria 39 km · Breña 39 km · Miraflores 40 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 Chosica (-11.9431°, -76.7094°, elevation 831 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. 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).