Chepén weather in September

In September, Chepén sees average daytime highs of 22°C and overnight lows near 16°C, with 3 mm of rain across 1 wet days and about 12 hours of daylight. It is the 11th-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 41% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 11 h 54 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Chepén's 5th-clearest and 1st-windiest month. For the whole year in context, see Chepén's year-round climate.

Daytime high
22°
11th warmest
Overnight low
16°
1st coldest
Rainfall
3 mm
1 wet days
Daylight
12 hours
6:13 AM – 6:11 PM
Cloud cover
52%
5th clearest
Wind
13 km/h
1st windiest
Solar energy
6.06 kWh/m²
Travel score
8.0
out of 10

Chepén is city of La Libertad Region and capital of the Chepén Province, 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 Chepén reaches about 22°C in the afternoon and slips back to 16°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 23°C. Set against its neighbours, September runs on par with August and on par with October.

15°18°20°23°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

Chepén weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 20°276.512.46.9
Feb26° / 21°5710.412.26.0
Mar26° / 21°6613.3125.8
Apr25° / 20°275.911.87.3
May24° / 19°61.611.78.4
Jun23° / 18°10.411.68.6
Jul22° / 17°00.111.68.5
Aug21° / 16°10.211.88.4
Sep22° / 16°31128.0
Oct22° / 17°61.612.27.7
Nov23° / 17°61.812.37.8
Dec24° / 19°144.212.47.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 24% of September, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17921
27822
37723
47624
57525
67426
77228
87228
97129
107030
116832
126733
136634
146535
156436
166337
176139
186139
195941
205941
215941
225743
235743
245743
255644
265644
275644
285644
295644
305545

Chance of precipitation in September

Any precipitation

Chepén gets around 3 mm of rain over 1 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 3% and peaks near 5% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
22
32
42
52
62
72
83
93
103
113
123
133
143
153
163
173
183
193
203
214
224
234
244
255
265
275
285
295
305

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)
182153
282153
383143
483143
584133
684133
784133
884133
985123
1085123
1185123
1285123
1385123
1485123
1585123
1685123
1785123
1885123
1985123
2084133
2184133
2284133
2383143
2483143
2582153
2682153
2782162
2882162
2981172
3080182

Wind in September

Winds average 13 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 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 12 minutes over September. Sunrise moves from 6:22 AM to 6:05 AM, and sunset from 6:13 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:226:13
211.96:216:13
311.96:216:13
411.96:206:13
511.96:196:13
611.96:196:12
711.96:186:12
811.96:186:12
911.96:176:12
1011.96:176:12
1111.96:166:12
1211.96:156:12
1311.96:156:11
1411.96:146:11
1512.06:146:11
1612.06:136:11
1712.06:136:11
1812.06:126:11
1912.06:116:10
2012.06:116:10
2112.06:106:10
2212.06:106:10
2312.06:096:10
2412.06:096:10
2512.06:086:09
2612.06:086:09
2712.06:076:09
2812.06:066:09
2912.06:066:09
3012.16:056:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.06 kWh/m².

For context, solar energy here swings from a low near 5.07 kWh/m² to a high of 6.52 kWh/m² in November across the year — September's 6.06 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
46.0Bright
56.0Bright
66.0Bright
76.0Bright
86.0Intense
96.0Intense
106.0Intense
116.0Intense
126.0Intense
136.0Intense
146.1Intense
156.1Intense
166.1Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.2Intense
306.2Intense
Planning a trip in September

Is September a good time to visit Chepén?

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

8.0
Sightseeing
5th-best month of the year
5.3
Beach & pool
11th-best month of the year

September is one of the better times to visit Chepén for general sightseeing.

What to pack for Chepén in September

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

In September, Chepén sees daytime highs around 22°C and nights near 16°C. Pack sun protection.

sun protection

Sea temperature near Chepén 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 28 km away) 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 in Chepén in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chepén peaks around February 17 at about 15 (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 17UV 15Jun 21UV 9
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun9Very high
Jul10Very high
Aug11Extreme
Sep11Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Chepén?

Chepén sits at 7.2°S, 79.4°W, 239 m above sea level, in Peru. The nearest listed city is Guadalupe, 7.0 km away.

Topography around Chepén

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

Within 3 km, the terrain around Chepén has significant variations in elevation — a maximum elevation change of 264 m around an average of 135 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,261 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,940 m.

The land around Chepén is covered by cropland (59%) and bare terrain (21%) within 3 km, bare terrain (47%) and cropland (39%) within 16 km, and bare terrain (25%) and water (25%) within 80 km.

3 km
264 m
16 km
1,261 m
80 km
3,940 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Guadalupe 7.0 km · San Pedro de Lloc 24 km · Pacasmayo 25 km · Saña 38 km · Paiján 58 km · Pátapo 59 km · Monsefú 63 km · Chongoyape 65 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 Chepén (-7.2244°, -79.4248°, elevation 239 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).