Coishco weather in September

In September, Coishco sees average daytime highs of 21°C and overnight lows near 15°C, with 1 mm of rain across 0.1 wet days and about 11.9 hours of daylight. It is the 11th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 21°C through the month. The sky is clear or mostly clear about 31% of the time in September, and the air most often feels comfortable.

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 Coishco's 5th-clearest and 1st-windiest month. For the whole year in context, see Coishco's year-round climate.

Daytime high
21°
11th warmest
Overnight low
15°
1st coldest
Rainfall
1 mm
0.1 wet days
Daylight
12 hours
6:10 AM – 6:07 PM
Cloud cover
55%
5th clearest
Wind
12 km/h
1st windiest
Solar energy
6.17 kWh/m²
Travel score
7.9
out of 10

Coishco is city in Ancash Department, 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 21°C through the month.

A typical September day in Coishco reaches about 21°C in the afternoon and slips back to 15°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 22°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)
12115
22115
32115
42115
52115
62115
72115
82115
92115
102115
112115
122115
132115
142115
152115
162115
172115
182115
192115
202115
212115
222115
232115
242115
252115
262115
272115
282115
292115
302115

Coishco weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 20°6212.57.4
Feb27° / 21°123.312.36.8
Mar27° / 21°144.512.16.8
Apr25° / 19°41.311.87.9
May23° / 17°10.211.68.6
Jun22° / 16°10.111.58.4
Jul21° / 15°10.111.58.2
Aug20° / 15°10.111.78.1
Sep21° / 15°10.111.97.9
Oct21° / 15°20.412.27.8
Nov22° / 16°10.312.47.9
Dec24° / 18°51.112.57.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 29% of September, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17525
27525
37327
47228
57129
67030
77030
86832
96733
106634
116436
126337
136139
145941
155941
165743
175644
185446
195446
205347
215248
225248
235149
245149
255248
265149
275248
285248
295248
305446

Chance of precipitation in September

Any precipitation

Coishco gets around 1 mm of rain over 0.1 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 0% and peaks near 1% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
211
221
231
241
251
261
271
281
291
301

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 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
128882
228972
328972
428972
528972
628972
729062
829062
938962
1038962
1138962
1238962
1338962
1439052
1539052
1639052
1739052
1829152
1929152
2029152
2129152
2229152
2329152
2429152
2529152
2629152
2729152
2829062
2929062
3029161

Wind in September

Winds average 12 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

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 6:19 AM to 6:02 AM, and sunset from 6:09 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:196:09
211.86:196:09
311.86:186:09
411.86:186:09
511.96:176:09
611.96:166:08
711.96:166:08
811.96:156:08
911.96:156:08
1011.96:146:08
1111.96:136:08
1211.96:136:08
1311.96:126:08
1411.96:126:08
1511.96:116:07
1612.06:106:07
1712.06:106:07
1812.06:096:07
1912.06:086:07
2012.06:086:07
2112.06:076:07
2212.06:076:07
2312.06:066:07
2412.06:056:06
2512.06:056:06
2612.06:046:06
2712.06:036:06
2812.16:036:06
2912.16:026:06
3012.16:026:06

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.17 kWh/m².

For context, solar energy here swings from a low near 5.19 kWh/m² to a high of 6.71 kWh/m² in November across the year — September's 6.17 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.1Intense
106.1Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.2Intense
236.2Intense
246.3Intense
256.3Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Is September a good time to visit Coishco?

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

7.9
Sightseeing
5th-best month of the year
4.5
Beach & pool
11th-best month of the year

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

What to pack for Coishco in September

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

In September, Coishco sees daytime highs around 21°C and nights near 15°C. Pack sun protection.

sun protection

Sea temperature near Coishco 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 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 4 to Apr 15 — about 3.4 months when the water holds above 20°C.

16°18°20°22°24°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb22Refreshing
Mar22Refreshing
Apr20Cool
May19Cool
Jun19Cool
Jul18Cool
Aug18Cool
Sep17Cool
Oct17Cool
Nov18Cool
Dec19Cool

UV index in Coishco in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Coishco peaks around February 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 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 14UV 15Jul 11UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May11Extreme
Jun9Very high
Jul9Very high
Aug10Extreme
Sep10Extreme
Oct13Extreme
Nov13Extreme
Dec12Extreme
Location & terrain

Where is Coishco?

Coishco sits at 9.0°S, 78.6°W, 20 m above sea level, in Peru. The nearest listed city is Chimbote, 6.0 km away.

HuarmeyCentenarioHuaraz

Topography around Coishco

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

Within 3 km, the terrain around Coishco has significant variations in elevation — a maximum elevation change of 449 m around an average of 84 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 572 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,108 m.

The land around Coishco is covered by bare terrain (59%) within 3 km, water (48%) and bare terrain (23%) within 16 km, and bare terrain (38%) and water (36%) within 80 km.

3 km
449 m
16 km
572 m
80 km
5,108 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Chimbote 6.0 km · Virú 69 km · Moche 104 km · Laredo 110 km · Trujillo 111 km · Huarmey 127 km · Centenario 131 km · Huaraz 132 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 Coishco (-9.0231°, -78.6156°, elevation 20 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).