La Mesa weather in September

In September, La Mesa sees average daytime highs of 20°C and overnight lows near 10°C, with 176 mm of rain across 25.1 wet days and about 12 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 2% of the time in September, and the air most often feels dry.

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 La Mesa's 7th-clearest and 4th-windiest month. For the whole year in context, see La Mesa's year-round climate.

Daytime high
20°
1st warmest
Overnight low
10°
3rd coldest
Rainfall
176 mm
25.1 wet days
Daylight
12 hours
5:49 AM – 5:51 PM
Cloud cover
87%
7th clearest
Wind
5 km/h
4th windiest
Solar energy
5.71 kWh/m²
Travel score
3.8
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 20°C through the month.

A typical September day in La Mesa reaches about 20°C in the afternoon and slips back to 10°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 18°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)
12010
22010
32010
42010
52010
62010
72010
82010
92010
102010
112010
122010
132010
142010
152010
162010
172010
182010
192010
202010
212010
222010
232010
242010
252010
262010
272010
282010
292010
302010

La Mesa weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 14021.711.74.5
Feb20° / 10°1982311.84.0
Mar20° / 10°32428.1123.5
Apr20° / 11°35828.412.13.3
May20° / 11°26628.712.23.4
Jun20° / 10°12523.812.33.8
Jul20° / 10°9522.112.34.2
Aug20° / 10°10721.212.24.4
Sep20° / 10°17625.1123.8
Oct20° / 10°2722911.93.4
Nov19° / 10°26428.911.83.2
Dec19° / 10°17823.811.74.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 5% of September, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11090
21090
31090
41090
5991
6991
7991
8991
9892
10892
11793
12793
13793
14793
15694
16694
17694
18694
19694
20694
21694
22595
23595
24595
25595
26595
27694
28694
29694
30595

Chance of precipitation in September

Any precipitation

La Mesa gets around 176 mm of rain over 25.1 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 83% and peaks near 89% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
177
277
377
478
578
678
779
879
980
1080
1181
1282
1382
1483
1583
1684
1784
1885
1986
2086
2187
2287
2388
2488
2588
2689
2789
2889
2989
3089

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
26991
27991
28991
29991
30991

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

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 5:52 AM to 5:46 AM, and sunset from 5:58 PM to 5:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:525:58
212.15:525:58
312.15:525:57
412.15:525:57
512.15:525:56
612.15:515:56
712.15:515:55
812.15:515:55
912.15:515:54
1012.15:505:54
1112.15:505:53
1212.05:505:53
1312.05:505:52
1412.05:505:52
1512.05:495:51
1612.05:495:51
1712.05:495:50
1812.05:495:50
1912.05:485:49
2012.05:485:49
2112.05:485:48
2212.05:485:48
2312.05:485:47
2412.05:475:47
2512.05:475:46
2612.05:475:46
2712.05:475:45
2812.05:475:45
2912.05:465:44
3012.05:465:44

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.71 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.81 kWh/m² to a high of 5.71 kWh/m² in September across the year — September's 5.71 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Is September a good time to visit La Mesa?

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

3.8
Sightseeing
6th-best month of the year
2.0
Beach & pool
3rd-best month of the year

September is a weaker month for outdoor sightseeing in La Mesa.

What to pack for La Mesa in September

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

In September, La Mesa sees daytime highs around 20°C and nights near 10°C. Pack rain gear. Worth having: sun protection. About 25 days see rain.

rain gearsun protection

UV index in La Mesa in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in La Mesa peaks around February 18 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 12 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 18UV 16Dec 14UV 12
UV index (midday)Level
Jan14Extreme
Feb17Extreme
Mar16Extreme
Apr14Extreme
May14Extreme
Jun14Extreme
Jul13Extreme
Aug13Extreme
Sep15Extreme
Oct14Extreme
Nov13Extreme
Dec11Extreme

Air quality in La Mesa 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 La Mesa is worst in March — around 35 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (July, 20 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1834 µg/m³Jul 1420 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb27Moderate
Mar35Moderate
Apr29Moderate
May24Moderate
Jun22Moderate
Jul20Moderate
Aug24Moderate
Sep25Moderate
Oct23Moderate
Nov21Moderate
Dec22Moderate
Location & terrain

Where is La Mesa?

La Mesa sits at 5.3°N, 73.9°W, 2,884 m above sea level, in Colombia. The nearest listed city is Villa de San Diego de Ubaté, 12 km away.

Topography around La Mesa

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

Within 3 km, the terrain around La Mesa has large variations in elevation — a maximum elevation change of 694 m around an average of 3,088 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,852 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,634 m.

The land around La Mesa is covered by grassland (55%) and trees (39%) within 3 km, grassland (54%) and trees (39%) within 16 km, and trees (55%) and grassland (40%) within 80 km.

3 km
694 m
16 km
1,852 m
80 km
3,634 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Villa de San Diego de Ubaté 12 km · Zipaquirá 29 km · Pacho 31 km · Tocancipá 34 km · Chiquinquirá 40 km · Cajicá 41 km · Bosconia 46 km · Chía 48 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 La Mesa (5.2667°, -73.9167°, elevation 2,884 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).