Cartago weather in September

In September, Cartago sees average daytime highs of 26°C and overnight lows near 18°C, with 397 mm of rain across 29 wet days and about 12 hours of daylight. It is the 6th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Cartago's 7th-clearest and 4th-windiest month. For the whole year in context, see Cartago's year-round climate.

Daytime high
26°
6th warmest
Overnight low
18°
2nd coldest
Rainfall
397 mm
29 wet days
Daylight
12 hours
5:57 AM – 5:59 PM
Cloud cover
93%
7th clearest
Wind
3 km/h
4th windiest
Solar energy
4.22 kWh/m²
Travel score
3.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical September day in Cartago reaches about 26°C in the afternoon and slips back to 18°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12618
22618
32618
42618
52618
62618
72618
82618
92618
102618
112618
122618
132618
142618
152618
162618
172618
182618
192618
202618
212618
222618
232618
242618
252618
262618
272618
282618
292518
302518

Cartago weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 18°29128.411.83.8
Feb26° / 18°33426.311.83.6
Mar26° / 18°43530.2123.5
Apr25° / 18°51729.712.13.4
May25° / 18°47730.512.23.4
Jun25° / 18°35129.312.33.4
Jul26° / 18°29329.312.23.5
Aug26° / 18°31729.712.23.5
Sep26° / 18°39729123.4
Oct25° / 18°47530.411.93.4
Nov25° / 18°50629.411.83.5
Dec25° / 18°36529.611.73.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 1% of September, with mostly cloudy or overcast conditions the remaining 99%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1199
2199
3199
4199
5199
6199
7199
8199
9199
10199
11199
12199
13199
14199
15199
16199
17199
18199
19199
20199
21199
22199
23199
24199
25199
26199
27199
28199
29199
30199

Chance of precipitation in September

Any precipitation

Cartago gets around 397 mm of rain over 29 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 97% and peaks near 97% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
197
297
397
497
597
697
797
897
997
1097
1197
1297
1397
1497
1597
1697
1797
1897
1997
2097
2197
2297
2397
2497
2597
2697
2797
2897
2997
3097

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 87% of days. Sticky, muggy-or-worse air turns up on roughly 87% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)
11387
21387
31387
41387
51387
61387
71387
81387
91387
101387
111387
121387
131387
141387
151387
161387
171288
181288
191288
201288
211288
221288
231288
241288
251288
261288
271288
281288
291387
301387

Wind in September

Winds average 3 km/h in September.

Across September, daily wind ranges from about 3 km/h on the calmest days to 3 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm

Sunrise & sunset in September

DaylightNight

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

Days shrink by about 6 minutes over September. Sunrise moves from 6:01 AM to 5:54 AM, and sunset from 6:06 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:016:06
212.16:006:06
312.16:006:05
412.16:006:05
512.16:006:04
612.16:006:04
712.15:596:03
812.15:596:03
912.15:596:02
1012.15:596:02
1112.05:586:01
1212.05:586:01
1312.05:586:00
1412.05:586:00
1512.05:575:59
1612.05:575:59
1712.05:575:58
1812.05:575:58
1912.05:565:57
2012.05:565:57
2112.05:565:56
2212.05:565:56
2312.05:565:55
2412.05:555:55
2512.05:555:54
2612.05:555:54
2712.05:555:53
2812.05:545:53
2912.05:545:52
3012.05:545:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.22 kWh/m².

For context, solar energy here swings from a low near 3.43 kWh/m² to a high of 4.32 kWh/m² in August across the year — September's 4.22 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.3Bright
104.3Bright
114.3Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.1Bright
244.1Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.1Bright
304.1Bright
Planning a trip in September

Is September a good time to visit Cartago?

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

3.4
Sightseeing
8th-best month of the year
3.3
Beach & pool
7th-best month of the year

September is a weaker month for outdoor sightseeing in Cartago.

What to pack for Cartago in September

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

In September, Cartago sees daytime highs around 26°C and nights near 18°C. Pack rain gear. Worth having: light clothes. About 29 days see rain.

rain gearlight clothes

UV index in Cartago in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cartago peaks around February 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 21UV 15Dec 16UV 11
UV index (midday)Level
Jan12Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May14Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec11Extreme

Air quality in Cartago 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 Cartago is worst in March — around 35 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (July, 19 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1534 µg/m³Jul 1519 µg/m³
PM2.5 (µg/m³)Level
Jan28Moderate
Feb32Moderate
Mar35Moderate
Apr30Moderate
May24Moderate
Jun21Moderate
Jul19Moderate
Aug22Moderate
Sep25Moderate
Oct23Moderate
Nov22Moderate
Dec26Moderate
Location & terrain

Where is Cartago?

Cartago sits at 4.7°N, 75.9°W, 915 m above sea level, in Colombia. The nearest listed city is La Virginia, 17 km away.

Topography around Cartago

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

Within 3 km, the terrain around Cartago has only modest variations in elevation — a maximum elevation change of 191 m around an average of 936 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 886 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,236 m.

The land around Cartago is covered by grassland (43%), trees (27%) and artificial surfaces (24%) within 3 km, grassland (55%) and trees (30%) within 16 km, and trees (70%) and grassland (26%) within 80 km.

3 km
191 m
16 km
886 m
80 km
5,236 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: La Virginia 17 km · Quimbaya 21 km · Pereira 25 km · Montenegro 27 km · Marsella 29 km · Dosquebradas 29 km · La Unión 32 km · Circasia 34 km

Colombia travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type A / B
120 / 240 V · 60 Hz
Prices
≈ 38% of US
price level, 2025
GDP per capita
$8,562
2025
Happiness
6.0 / 10
World Happiness, 2025
Safe drinking water
74%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
15.4
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 480
Religion
Roman Catholic 64%Protestant 17%none 14%atheist 1%

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 Cartago (4.7464°, -75.9117°, elevation 915 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. 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).