Nechí weather in September

In September, Nechí sees average daytime highs of 31°C and overnight lows near 24°C, with 295 mm of rain across 29.6 wet days and about 12 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 1% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Nechí's 10th-clearest and 5th-windiest month. For the whole year in context, see Nechí's year-round climate.

Daytime high
31°
9th warmest
Overnight low
24°
5th coldest
Rainfall
295 mm
29.6 wet days
Daylight
12 hours
5:52 AM – 5:55 PM
Cloud cover
92%
10th clearest
Wind
4 km/h
5th windiest
Solar energy
4.44 kWh/m²
Travel score
2.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical September day in Nechí reaches about 31°C in the afternoon and slips back to 24°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 33°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123124
133124
143124
153124
163124
173124
183124
193124
203124
213124
223124
233124
243124
253124
263124
273124
283124
293124
303124

How September really feels in Nechí

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Nechí weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°9018.111.63.7
Feb32° / 24°8714.211.73.4
Mar32° / 24°19221.911.92.8
Apr31° / 24°33628.612.22.3
May31° / 24°35930.512.42.3
Jun31° / 24°31529.412.52.3
Jul31° / 24°31330.412.42.3
Aug31° / 24°32730.312.32.3
Sep31° / 24°29529.6122.4
Oct30° / 24°30630.611.82.4
Nov30° / 24°2722911.62.5
Dec31° / 23°17025.511.53.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 3% of September, with mostly cloudy or overcast conditions the remaining 97%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1496
2496
3496
4496
5496
6496
7496
8496
9496
10496
11496
12496
13496
14496
15496
16496
17496
18397
19397
20397
21397
22397
23397
24397
25397
26397
27397
28397
29397
30397

Chance of precipitation in September

Any precipitation

Nechí gets around 295 mm of rain over 29.6 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 99% and peaks near 99% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
198
298
398
498
598
698
798
898
998
1098
1199
1299
1399
1499
1599
1699
1799
1899
1999
2099
2199
2299
2399
2499
2599
2699
2799
2899
2999
3099

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
12773
22872
32872
42971
52971
62971
73070
83070
93070
103169
113169
123169
133169
143169
153169
163169
173169
183169
193169
203169
213268
223268
233268
243268
253268
263268
273268
283268
293268
303268

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.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over September. Sunrise moves from 5:54 AM to 5:50 AM, and sunset from 6:04 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:546:04
212.15:546:03
312.15:546:02
412.15:546:02
512.15:546:01
612.15:546:01
712.15:536:00
812.15:536:00
912.15:535:59
1012.15:535:58
1112.15:535:58
1212.15:535:57
1312.15:535:57
1412.15:525:56
1512.15:525:55
1612.05:525:55
1712.05:525:54
1812.05:525:54
1912.05:525:53
2012.05:525:52
2112.05:515:52
2212.05:515:51
2312.05:515:51
2412.05:515:50
2512.05:515:49
2612.05:515:49
2712.05:515:48
2812.05:515:48
2911.95:505:47
3011.95:505:47

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.44 kWh/m².

For context, solar energy here swings from a low near 3.96 kWh/m² to a high of 5.13 kWh/m² in February across the year — September's 4.44 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Is September a good time to visit Nechí?

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

2.4
Sightseeing
6th-best month of the year
3.4
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Nechí.

What to pack for Nechí in September

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

In September, Nechí sees daytime highs around 31°C and nights near 24°C. Pack light clothes and rain gear. About 30 days see rain.

light clothesrain gear

UV index in Nechí 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 Nechí peaks around September 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highSep 18UV 12Dec 14UV 10
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar12Extreme
Apr12Extreme
May12Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep13Extreme
Oct12Extreme
Nov10Extreme
Dec10Very high

Air quality in Nechí 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 Nechí is worst in March — around 37 µg/m³ PM2.5 (poor), about 3.2× the cleanest month (November, 12 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateGoodMar 1836 µg/m³Nov 2312 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb22Moderate
Mar37Poor
Apr26Moderate
May19Moderate
Jun17Moderate
Jul16Moderate
Aug15Moderate
Sep13Moderate
Oct12Moderate
Nov12Good
Dec12Good
Location & terrain

Where is Nechí?

Nechí sits at 8.1°N, 74.8°W, 31 m above sea level, in Colombia. The nearest listed city is Ayapel, 47 km away.

Topography around Nechí

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

Within 3 km, the terrain around Nechí has only modest variations in elevation — a maximum elevation change of 88 m around an average of 39 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 543 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,210 m.

The land around Nechí is covered by grassland (35%) and trees (31%) within 3 km, trees (51%) and grassland (35%) within 16 km, and trees (52%) and grassland (38%) within 80 km.

3 km
88 m
16 km
543 m
80 km
2,210 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Ayapel 47 km · Caucasia 48 km · El Bagre 55 km · Zaragoza 68 km · Montelíbano 72 km · San Marcos 74 km · Tiquisio 76 km · Sucre 80 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 Nechí (8.0942°, -74.7757°, elevation 31 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).