Darien weather in September

In September, Darien sees average daytime highs of 22°C and overnight lows near 15°C, with 444 mm of rain across 30 wet days and about 12 hours of daylight. It is the 11th-warmest and 6th-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 0% of the time in September, and the air most often feels humid.

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 Darien's 9th-clearest and 1st-windiest month. For the whole year in context, see Darien's year-round climate.

Daytime high: 22°; 11th warmest
Overnight low: 15°; 3rd coldest
Rainfall: 444 mm; 30 wet days
Daylight: 12 hours; 6:00 AM – 6:01 PM
Cloud cover: 96%; 9th clearest
Wind: 4 km/h; 1st windiest
Solar energy: 3.45 kWh/m²
Travel score: 3.2; out of 10

← August Darien 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 22°C through the month.

A typical September day in Darien reaches about 22°C in the afternoon and slips back to 15°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 24°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)	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22	22
Avg low (°C)	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15

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

Darien weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 6th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	23° / 15°	317	30.1	11.8	3.5
Feb	23° / 15°	304	27.1	11.9	3.5
Mar	23° / 16°	389	30.5	12	3.4
Apr	23° / 16°	496	29.7	12.1	3.3
May	22° / 16°	569	30.7	12.2	3.3
Jun	22° / 15°	478	29.8	12.2	3.3
Jul	22° / 15°	416	30.6	12.2	3.3
Aug	22° / 15°	377	30.6	12.1	3.3
Sep	22° / 15°	444	30	12	3.2
Oct	22° / 15°	512	30.7	11.9	3.3
Nov	22° / 15°	480	29.3	11.8	3.3
Dec	22° / 15°	353	30.3	11.8	3.4

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 0% of September, with mostly cloudy or overcast conditions the remaining 100%.

	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	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Cloudier (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

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

Chance of precipitation in September

Any precipitation

Darien gets around 444 mm of rain over 30 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 (%)	100	100	100	100	100	100	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	100
2	100
3	100
4	100
5	100
6	100
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 humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the humid band about 92% of days. It rarely turns muggy — the humid and sticky bands barely register.

	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
Comfortable (%)	5	5	5	5	6	6	6	6	6	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7
Humid (%)	94	94	94	94	93	93	93	93	93	92	92	92	92	92	92	92	92	92	92	92	92	92	92	92	92	92	92	92	92	92
Muggy (%)	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	1	1

	Comfortable (%)	Humid (%)	Muggy (%)
1	5	94	1
2	5	94	1
3	5	94	1
4	5	94	1
5	6	93	1
6	6	93	1
7	6	93	1
8	6	93	1
9	6	93	1
10	7	92	1
11	7	92	1
12	7	92	1
13	7	92	1
14	7	92	1
15	7	92	1
16	7	92	1
17	7	92	1
18	7	92	1
19	7	92	1
20	7	92	1
21	7	92	1
22	7	92	1
23	7	92	1
24	7	92	1
25	7	92	1
26	7	92	1
27	7	92	1
28	7	92	1
29	7	92	1
30	7	92	1

Wind in September

Winds average 4 km/h in September, the windiest month of the year.

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 6:03 AM to 5:56 AM, and sunset from 6:08 PM to 5:54 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	12.0	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	12.0
Sunrise (AM)	6:03	6:03	6:03	6:03	6:02	6:02	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	5:56	5:56
Sunset (PM)	6:08	6:07	6:07	6:07	6:06	6:06	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	5:58	5:57	5:57	5:56	5:56	5:55	5:55	5:54

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.1	6:03	6:08
2	12.1	6:03	6:07
3	12.1	6:03	6:07
4	12.1	6:03	6:07
5	12.1	6:02	6:06
6	12.1	6:02	6:06
7	12.1	6:02	6:05
8	12.1	6:02	6:05
9	12.0	6:01	6:04
10	12.0	6:01	6:04
11	12.0	6:01	6:03
12	12.0	6:01	6:03
13	12.0	6:00	6:02
14	12.0	6:00	6:02
15	12.0	6:00	6:01
16	12.0	6:00	6:01
17	12.0	5:59	6:00
18	12.0	5:59	6:00
19	12.0	5:59	5:59
20	12.0	5:59	5:59
21	12.0	5:58	5:58
22	12.0	5:58	5:58
23	12.0	5:58	5:58
24	12.0	5:58	5:57
25	12.0	5:57	5:57
26	12.0	5:57	5:56
27	12.0	5:57	5:56
28	12.0	5:57	5:55
29	12.0	5:56	5:55
30	12.0	5:56	5:54

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.45 kWh/m².

For context, solar energy here swings from a low near 3.07 kWh/m² to a high of 3.98 kWh/m² in February across the year — September's 3.45 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)	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4	3.4
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	3.5	Moderate
2	3.5	Moderate
3	3.5	Moderate
4	3.5	Moderate
5	3.5	Moderate
6	3.5	Moderate
7	3.5	Moderate
8	3.5	Moderate
9	3.5	Moderate
10	3.5	Moderate
11	3.5	Moderate
12	3.5	Moderate
13	3.5	Moderate
14	3.5	Moderate
15	3.5	Moderate
16	3.5	Moderate
17	3.4	Moderate
18	3.4	Moderate
19	3.4	Moderate
20	3.4	Moderate
21	3.4	Moderate
22	3.4	Moderate
23	3.4	Moderate
24	3.4	Moderate
25	3.4	Moderate
26	3.4	Moderate
27	3.4	Moderate
28	3.4	Moderate
29	3.4	Moderate
30	3.4	Moderate

Planning a trip in September

Is September a good time to visit Darien?

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

3.2

Sightseeing

12th-best month of the year

2.3

Beach & pool

12th-best month of the year

September is a weaker month for outdoor sightseeing in Darien.

What to pack for Darien in September

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

In September, Darien sees daytime highs around 22°C and nights near 15°C. Pack rain gear. About 30 days see rain.

rain gear

UV index in Darien 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 Darien peaks around March 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 11 at about 12 (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)	14	14	17	13	15	13	12	12	13	14	12	12
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	14	Extreme
Mar	17	Extreme
Apr	13	Extreme
May	15	Extreme
Jun	13	Extreme
Jul	12	Extreme
Aug	12	Extreme
Sep	13	Extreme
Oct	14	Extreme
Nov	12	Extreme
Dec	12	Extreme

Air quality in Darien 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 Darien is worst in March — around 22 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (November, 13 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)	18	20	22	20	18	18	19	18	18	15	13	16
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	18	Moderate
Feb	20	Moderate
Mar	22	Moderate
Apr	20	Moderate
May	18	Moderate
Jun	18	Moderate
Jul	19	Moderate
Aug	18	Moderate
Sep	18	Moderate
Oct	15	Moderate
Nov	13	Moderate
Dec	16	Moderate

Location & terrain

Where is Darien?

Darien sits at 3.9°N, 76.5°W, 1,521 m above sea level, in Colombia. The nearest listed city is Guadalajara de Buga, 21 km away.

Topography around Darien

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

Within 3 km, the terrain around Darien has large variations in elevation — a maximum elevation change of 668 m around an average of 1,576 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,005 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,538 m.

The land around Darien is covered by grassland (54%) and trees (32%) within 3 km, trees (70%) and grassland (26%) within 16 km, and trees (73%) within 80 km.

3 km

668 m

grassland 54%

16 km

3,005 m

trees 70%

80 km

4,538 m

trees 73%

treesgrasslandcroplandartificial surfaceswatermangroves

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

September weather nearby: Guadalajara de Buga 21 km · Guacarí 25 km · El Cerrito 33 km · Tuluá 36 km · Yumbo 39 km · Andalucía 44 km · Palmira 48 km · Cali 56 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 Darien (3.9314°, -76.4848°, elevation 1,521 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	22	15
2	22	15
3	22	15
4	22	15
5	22	15
6	22	15
7	22	15
8	22	15
9	22	15
10	22	15
11	22	15
12	22	15
13	22	15
14	22	15
15	22	15
16	22	15
17	22	15
18	22	15
19	22	15
20	22	15
21	22	15
22	22	15
23	22	15
24	22	15
25	22	15
26	22	15
27	22	15
28	22	15
29	22	15
30	22	15

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

	Rain chance (%)
1	100
2	100
3	100
4	100
5	100
6	100
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

	Comfortable (%)	Humid (%)	Muggy (%)
1	5	94	1
2	5	94	1
3	5	94	1
4	5	94	1
5	6	93	1
6	6	93	1
7	6	93	1
8	6	93	1
9	6	93	1
10	7	92	1
11	7	92	1
12	7	92	1
13	7	92	1
14	7	92	1
15	7	92	1
16	7	92	1
17	7	92	1
18	7	92	1
19	7	92	1
20	7	92	1
21	7	92	1
22	7	92	1
23	7	92	1
24	7	92	1
25	7	92	1
26	7	92	1
27	7	92	1
28	7	92	1
29	7	92	1
30	7	92	1

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

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

	Rain chance (%)
1	100
2	100
3	100
4	100
5	100
6	100
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

	Comfortable (%)	Humid (%)	Muggy (%)
1	5	94	1
2	5	94	1
3	5	94	1
4	5	94	1
5	6	93	1
6	6	93	1
7	6	93	1
8	6	93	1
9	6	93	1
10	7	92	1
11	7	92	1
12	7	92	1
13	7	92	1
14	7	92	1
15	7	92	1
16	7	92	1
17	7	92	1
18	7	92	1
19	7	92	1
20	7	92	1
21	7	92	1
22	7	92	1
23	7	92	1
24	7	92	1
25	7	92	1
26	7	92	1
27	7	92	1
28	7	92	1
29	7	92	1
30	7	92	1

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

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

	Rain chance (%)
1	100
2	100
3	100
4	100
5	100
6	100
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

	Comfortable (%)	Humid (%)	Muggy (%)
1	5	94	1
2	5	94	1
3	5	94	1
4	5	94	1
5	6	93	1
6	6	93	1
7	6	93	1
8	6	93	1
9	6	93	1
10	7	92	1
11	7	92	1
12	7	92	1
13	7	92	1
14	7	92	1
15	7	92	1
16	7	92	1
17	7	92	1
18	7	92	1
19	7	92	1
20	7	92	1
21	7	92	1
22	7	92	1
23	7	92	1
24	7	92	1
25	7	92	1
26	7	92	1
27	7	92	1
28	7	92	1
29	7	92	1
30	7	92	1