Roldanillo weather in September

In September, Roldanillo sees average daytime highs of 24°C and overnight lows near 17°C, with 396 mm of rain across 29.9 wet days and about 12 hours of daylight. It is the 7th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°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 Roldanillo's 7th-clearest and 2nd-windiest month. For the whole year in context, see Roldanillo's year-round climate.

Daytime high: 24°; 7th warmest
Overnight low: 17°; 1st coldest
Rainfall: 396 mm; 29.9 wet days
Daylight: 12 hours; 5:58 AM – 6:00 PM
Cloud cover: 93%; 7th clearest
Wind: 4 km/h; 2nd windiest
Solar energy: 3.78 kWh/m²
Travel score: 3.5; out of 10

← August Roldanillo year-round climate October →Best places to visit in September

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical September day in Roldanillo reaches about 24°C in the afternoon and slips back to 17°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 26°C. Set against its neighbours, September runs on par with August and on par with October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24
Avg low (°C)	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17	17

	Avg high (°C)	Avg low (°C)
1	24	17
2	24	17
3	24	17
4	24	17
5	24	17
6	24	17
7	24	17
8	24	17
9	24	17
10	24	17
11	24	17
12	24	17
13	24	17
14	24	17
15	24	17
16	24	17
17	24	17
18	24	17
19	24	17
20	24	17
21	24	17
22	24	17
23	24	17
24	24	17
25	24	17
26	24	17
27	24	17
28	24	17
29	24	17
30	24	17

Roldanillo weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 5th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	25° / 17°	259	30	11.8	3.7
Feb	25° / 18°	263	27.1	11.9	3.6
Mar	25° / 18°	341	30.4	12	3.5
Apr	24° / 18°	436	29.5	12.1	3.5
May	24° / 18°	456	30.9	12.2	3.4
Jun	24° / 17°	388	29.8	12.3	3.5
Jul	24° / 17°	348	30.6	12.2	3.5
Aug	24° / 17°	339	30.6	12.1	3.5
Sep	24° / 17°	396	29.9	12	3.5
Oct	24° / 17°	461	30.9	11.9	3.5
Nov	24° / 17°	449	29.3	11.8	3.5
Dec	24° / 17°	329	30.2	11.7	3.6

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%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	0	0	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Cloudier (%)	100	100	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99	99

	Clearer (%)	Cloudier (%)
1	0	100
2	0	100
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	1	99
9	1	99
10	1	99
11	1	99
12	1	99
13	1	99
14	1	99
15	1	99
16	1	99
17	1	99
18	1	99
19	1	99
20	1	99
21	1	99
22	1	99
23	1	99
24	1	99
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99

Chance of precipitation in September

Any precipitation

Roldanillo gets around 396 mm of rain over 29.9 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 100% and peaks near 100% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	99	99	99	99	99	99	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Rain chance (%)
1	99
2	99
3	99
4	99
5	99
6	99
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

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 50% of days. Sticky, muggy-or-worse air turns up on roughly 50% of them.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Humid (%)	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	51	51	50	50	50	50	49	49	49	48	48	48
Muggy (%)	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	50	49	49	50	50	50	50	51	51	51	52	52	52

	Humid (%)	Muggy (%)
1	50	50
2	50	50
3	50	50
4	50	50
5	50	50
6	50	50
7	50	50
8	50	50
9	50	50
10	50	50
11	50	50
12	50	50
13	50	50
14	50	50
15	50	50
16	50	50
17	50	50
18	50	50
19	51	49
20	51	49
21	50	50
22	50	50
23	50	50
24	50	50
25	49	51
26	49	51
27	49	51
28	48	52
29	48	52
30	48	52

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.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	4	calm
2	4	calm
3	4	calm
4	4	calm
5	4	calm
6	4	calm
7	4	calm
8	4	calm
9	4	calm
10	4	calm
11	4	calm
12	4	calm
13	4	calm
14	4	calm
15	4	calm
16	4	calm
17	4	calm
18	4	calm
19	4	calm
20	4	calm
21	4	calm
22	4	calm
23	4	calm
24	4	calm
25	4	calm
26	4	calm
27	4	calm
28	4	calm
29	4	calm
30	4	calm

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 6:02 AM to 5:55 AM, and sunset from 6:07 PM to 5:53 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.1	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0	12.0
Sunrise (AM)	6:02	6:02	6:01	6:01	6:01	6:01	6:00	6:00	6:00	6:00	5:59	5:59	5:59	5:59	5:58	5:58	5:58	5:58	5:57	5:57	5:57	5:57	5:57	5:56	5:56	5:56	5:56	5:55	5:55	5:55
Sunset (PM)	6:07	6:06	6:06	6:05	6:05	6:05	6:04	6:04	6:03	6:03	6:02	6:02	6:01	6:01	6:00	6:00	5:59	5:59	5:58	5:58	5:57	5:57	5:56	5:56	5:55	5:55	5:54	5:54	5:53	5:53

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.1	6:02	6:07
2	12.1	6:02	6:06
3	12.1	6:01	6:06
4	12.1	6:01	6:05
5	12.1	6:01	6:05
6	12.1	6:01	6:05
7	12.1	6:00	6:04
8	12.1	6:00	6:04
9	12.1	6:00	6:03
10	12.0	6:00	6:03
11	12.0	5:59	6:02
12	12.0	5:59	6:02
13	12.0	5:59	6:01
14	12.0	5:59	6:01
15	12.0	5:58	6:00
16	12.0	5:58	6:00
17	12.0	5:58	5:59
18	12.0	5:58	5:59
19	12.0	5:57	5:58
20	12.0	5:57	5:58
21	12.0	5:57	5:57
22	12.0	5:57	5:57
23	12.0	5:57	5:56
24	12.0	5:56	5:56
25	12.0	5:56	5:55
26	12.0	5:56	5:55
27	12.0	5:56	5:54
28	12.0	5:55	5:54
29	12.0	5:55	5:53
30	12.0	5:55	5:53

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.78 kWh/m².

For context, solar energy here swings from a low near 3.15 kWh/m² to a high of 4.05 kWh/m² in March across the year — September's 3.78 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	3.9	3.9	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.8	3.7	3.7	3.7	3.7	3.7	3.7	3.7	3.7	3.7	3.7	3.7
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	3.9	Moderate
2	3.9	Moderate
3	3.8	Moderate
4	3.8	Moderate
5	3.8	Moderate
6	3.8	Moderate
7	3.8	Moderate
8	3.8	Moderate
9	3.8	Moderate
10	3.8	Moderate
11	3.8	Moderate
12	3.8	Moderate
13	3.8	Moderate
14	3.8	Moderate
15	3.8	Moderate
16	3.8	Moderate
17	3.8	Moderate
18	3.8	Moderate
19	3.8	Moderate
20	3.7	Moderate
21	3.7	Moderate
22	3.7	Moderate
23	3.7	Moderate
24	3.7	Moderate
25	3.7	Moderate
26	3.7	Moderate
27	3.7	Moderate
28	3.7	Moderate
29	3.7	Moderate
30	3.7	Moderate

Planning a trip in September

Is September a good time to visit Roldanillo?

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

3.5

Sightseeing

4th-best month of the year

3.0

Beach & pool

12th-best month of the year

September is a weaker month for outdoor sightseeing in Roldanillo.

What to pack for Roldanillo in September

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

In September, Roldanillo sees daytime highs around 24°C and nights near 17°C. Pack rain gear. Worth having: light clothes. About 30 days see rain.

rain gearlight clothes

UV index in Roldanillo in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Roldanillo peaks around February 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 11 (extreme).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	15	15	11	14	12	13	12	14	14	12	11
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	15	Extreme
Mar	15	Extreme
Apr	11	Extreme
May	14	Extreme
Jun	12	Extreme
Jul	13	Extreme
Aug	12	Extreme
Sep	14	Extreme
Oct	14	Extreme
Nov	12	Extreme
Dec	11	Extreme

Air quality in Roldanillo 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 Roldanillo is worst in March — around 21 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (August, 12 µg/m³).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	16	19	21	19	16	13	13	12	13	13	12	14
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	16	Moderate
Feb	19	Moderate
Mar	21	Moderate
Apr	19	Moderate
May	16	Moderate
Jun	13	Moderate
Jul	13	Moderate
Aug	12	Moderate
Sep	13	Moderate
Oct	13	Moderate
Nov	12	Moderate
Dec	14	Moderate

Location & terrain

Where is Roldanillo?

Roldanillo sits at 4.4°N, 76.2°W, 945 m above sea level, in Colombia. The nearest listed city is Zarzal, 9.0 km away.

Topography around Roldanillo

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

Within 3 km, the terrain around Roldanillo has large variations in elevation — a maximum elevation change of 650 m around an average of 1,021 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,421 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,108 m.

The land around Roldanillo is covered by grassland (44%) and trees (38%) within 3 km, grassland (42%) and trees (38%) within 16 km, and trees (73%) and grassland (23%) within 80 km.

3 km

650 m

grassland 44%

16 km

1,421 m

grassland 42%

80 km

4,108 m

trees 73%

treesgrasslandcroplandartificial surfaceswater

← August Roldanillo year-round climate October →Best places to visit in September

September weather nearby: Zarzal 9.0 km · La Unión 15 km · Andalucía 27 km · Sevilla 30 km · Tuluá 37 km · Caicedonia 37 km · La Tebaida 41 km · Cartago 46 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

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 Roldanillo (4.4126°, -76.1546°, elevation 945 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).

	Avg high (°C)	Avg low (°C)
1	24	17
2	24	17
3	24	17
4	24	17
5	24	17
6	24	17
7	24	17
8	24	17
9	24	17
10	24	17
11	24	17
12	24	17
13	24	17
14	24	17
15	24	17
16	24	17
17	24	17
18	24	17
19	24	17
20	24	17
21	24	17
22	24	17
23	24	17
24	24	17
25	24	17
26	24	17
27	24	17
28	24	17
29	24	17
30	24	17

	Clearer (%)	Cloudier (%)
1	0	100
2	0	100
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	1	99
9	1	99
10	1	99
11	1	99
12	1	99
13	1	99
14	1	99
15	1	99
16	1	99
17	1	99
18	1	99
19	1	99
20	1	99
21	1	99
22	1	99
23	1	99
24	1	99
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99

	Rain chance (%)
1	99
2	99
3	99
4	99
5	99
6	99
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Humid (%)	Muggy (%)
1	50	50
2	50	50
3	50	50
4	50	50
5	50	50
6	50	50
7	50	50
8	50	50
9	50	50
10	50	50
11	50	50
12	50	50
13	50	50
14	50	50
15	50	50
16	50	50
17	50	50
18	50	50
19	51	49
20	51	49
21	50	50
22	50	50
23	50	50
24	50	50
25	49	51
26	49	51
27	49	51
28	48	52
29	48	52
30	48	52

	Avg high (°C)	Avg low (°C)
1	24	17
2	24	17
3	24	17
4	24	17
5	24	17
6	24	17
7	24	17
8	24	17
9	24	17
10	24	17
11	24	17
12	24	17
13	24	17
14	24	17
15	24	17
16	24	17
17	24	17
18	24	17
19	24	17
20	24	17
21	24	17
22	24	17
23	24	17
24	24	17
25	24	17
26	24	17
27	24	17
28	24	17
29	24	17
30	24	17

	Clearer (%)	Cloudier (%)
1	0	100
2	0	100
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	1	99
9	1	99
10	1	99
11	1	99
12	1	99
13	1	99
14	1	99
15	1	99
16	1	99
17	1	99
18	1	99
19	1	99
20	1	99
21	1	99
22	1	99
23	1	99
24	1	99
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99

	Rain chance (%)
1	99
2	99
3	99
4	99
5	99
6	99
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Humid (%)	Muggy (%)
1	50	50
2	50	50
3	50	50
4	50	50
5	50	50
6	50	50
7	50	50
8	50	50
9	50	50
10	50	50
11	50	50
12	50	50
13	50	50
14	50	50
15	50	50
16	50	50
17	50	50
18	50	50
19	51	49
20	51	49
21	50	50
22	50	50
23	50	50
24	50	50
25	49	51
26	49	51
27	49	51
28	48	52
29	48	52
30	48	52

	Avg high (°C)	Avg low (°C)
1	24	17
2	24	17
3	24	17
4	24	17
5	24	17
6	24	17
7	24	17
8	24	17
9	24	17
10	24	17
11	24	17
12	24	17
13	24	17
14	24	17
15	24	17
16	24	17
17	24	17
18	24	17
19	24	17
20	24	17
21	24	17
22	24	17
23	24	17
24	24	17
25	24	17
26	24	17
27	24	17
28	24	17
29	24	17
30	24	17

	Clearer (%)	Cloudier (%)
1	0	100
2	0	100
3	1	99
4	1	99
5	1	99
6	1	99
7	1	99
8	1	99
9	1	99
10	1	99
11	1	99
12	1	99
13	1	99
14	1	99
15	1	99
16	1	99
17	1	99
18	1	99
19	1	99
20	1	99
21	1	99
22	1	99
23	1	99
24	1	99
25	1	99
26	1	99
27	1	99
28	1	99
29	1	99
30	1	99

	Rain chance (%)
1	99
2	99
3	99
4	99
5	99
6	99
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100

	Humid (%)	Muggy (%)
1	50	50
2	50	50
3	50	50
4	50	50
5	50	50
6	50	50
7	50	50
8	50	50
9	50	50
10	50	50
11	50	50
12	50	50
13	50	50
14	50	50
15	50	50
16	50	50
17	50	50
18	50	50
19	51	49
20	51	49
21	50	50
22	50	50
23	50	50
24	50	50
25	49	51
26	49	51
27	49	51
28	48	52
29	48	52
30	48	52