La Unión weather in October

In October, La Unión sees average daytime highs of 23°C and overnight lows near 15°C, with 381 mm of rain across 29.6 wet days and about 12 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 0% of the time in October, and the air most often feels comfortable.

Daylight stretches from about 12 hours at the start of October to 11 h 54 min by month's end. Set against the rest of the year, October is La Unión's 8th-clearest and 7th-windiest month. For the whole year in context, see La Unión's year-round climate.

Daytime high: 23°; 5th warmest
Overnight low: 15°; 3rd coldest
Rainfall: 381 mm; 29.6 wet days
Daylight: 12 hours; 5:55 AM – 5:52 PM
Cloud cover: 88%; 8th clearest
Wind: 3 km/h; 7th windiest
Solar energy: 5.07 kWh/m²
Travel score: 3.6; out of 10

← September La Unión year-round climate November →Best places to visit in October

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical October day in La Unión reaches about 23°C in the afternoon and slips back to 15°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 25°C. Set against its neighbours, October runs about 1°C cooler than September and about 1°C warmer than November.

	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	31
Avg high (°C)	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	23	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	15

	Avg high (°C)	Avg low (°C)
1	23	15
2	23	15
3	23	15
4	23	15
5	23	15
6	23	15
7	23	15
8	23	15
9	23	15
10	23	15
11	23	15
12	23	15
13	23	15
14	23	15
15	23	15
16	23	15
17	23	15
18	23	15
19	23	15
20	23	15
21	23	15
22	23	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
31	22	15

La Unión weather by month

How October compares with the rest of the year at a glance. October is the 5th-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	22° / 15°	342	29.2	11.9	3.7
Feb	23° / 15°	343	26.3	11.9	3.6
Mar	23° / 15°	401	29.6	12	3.6
Apr	23° / 15°	441	29.3	12	3.5
May	23° / 15°	392	29.1	12.1	3.6
Jun	23° / 15°	270	24.3	12.1	4.3
Jul	24° / 15°	181	20.1	12.1	5.2
Aug	24° / 15°	147	18.4	12.1	5.4
Sep	24° / 15°	258	24.5	12	4.3
Oct	23° / 15°	381	29.6	12	3.6
Nov	22° / 15°	393	28.9	11.9	3.4
Dec	22° / 15°	388	29.6	11.9	3.6

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 4% of October, with mostly cloudy or overcast conditions the remaining 95%.

	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	31
Clearer (%)	9	9	8	8	8	8	7	7	7	6	6	6	6	6	5	4	4	4	3	3	3	3	3	2	2	2	2	2	2	2	2
Cloudier (%)	91	91	92	92	92	92	93	93	93	94	94	94	94	94	95	96	96	96	97	97	97	97	97	98	98	98	98	98	98	98	98

	Clearer (%)	Cloudier (%)
1	9	91
2	9	91
3	8	92
4	8	92
5	8	92
6	8	92
7	7	93
8	7	93
9	7	93
10	6	94
11	6	94
12	6	94
13	6	94
14	6	94
15	5	95
16	4	96
17	4	96
18	4	96
19	3	97
20	3	97
21	3	97
22	3	97
23	3	97
24	2	98
25	2	98
26	2	98
27	2	98
28	2	98
29	2	98
30	2	98
31	2	98

Chance of precipitation in October

Any precipitation

La Unión gets around 381 mm of rain over 29.6 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 95% and peaks near 98% on the wettest days. The odds climb toward the end of the month.

	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	31
Rain chance (%)	91	91	91	91	92	92	92	92	93	93	93	93	93	94	94	94	95	95	96	96	96	97	97	97	97	98	98	98	98	98	98

	Rain chance (%)
1	91
2	91
3	91
4	91
5	92
6	92
7	92
8	92
9	93
10	93
11	93
12	93
13	93
14	94
15	94
16	94
17	95
18	95
19	96
20	96
21	96
22	97
23	97
24	97
25	97
26	98
27	98
28	98
29	98
30	98
31	98

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the comfortable band about 70% 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	31
Dry (%)	3	3	3	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	2	1	1	1	1	1	1	1	1	1
Comfortable (%)	82	81	80	80	79	78	77	76	75	74	73	73	72	71	71	70	69	68	67	66	65	64	64	63	63	62	61	60	59	59	58
Humid (%)	15	16	17	18	19	20	21	22	23	24	25	25	26	27	27	28	29	30	31	32	33	34	35	36	36	37	38	39	40	40	41

	Dry (%)	Comfortable (%)	Humid (%)
1	3	82	15
2	3	81	16
3	3	80	17
4	2	80	18
5	2	79	19
6	2	78	20
7	2	77	21
8	2	76	22
9	2	75	23
10	2	74	24
11	2	73	25
12	2	73	25
13	2	72	26
14	2	71	27
15	2	71	27
16	2	70	28
17	2	69	29
18	2	68	30
19	2	67	31
20	2	66	32
21	2	65	33
22	2	64	34
23	1	64	35
24	1	63	36
25	1	63	36
26	1	62	37
27	1	61	38
28	1	60	39
29	1	59	40
30	1	59	40
31	1	58	41

Wind in October

Winds average 3 km/h in October.

Across October, 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.

	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	31
Wind speed (km/h)	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3
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	calm

	Wind speed (km/h)	Feels
1	3	calm
2	3	calm
3	3	calm
4	3	calm
5	3	calm
6	3	calm
7	3	calm
8	3	calm
9	3	calm
10	3	calm
11	3	calm
12	3	calm
13	3	calm
14	3	calm
15	3	calm
16	3	calm
17	3	calm
18	3	calm
19	3	calm
20	3	calm
21	3	calm
22	3	calm
23	3	calm
24	3	calm
25	3	calm
26	3	calm
27	3	calm
28	3	calm
29	3	calm
30	3	calm
31	3	calm

Sunrise & sunset in October

DaylightNight

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

Days shrink by about 6 minutes over October. Sunrise moves from 5:58 AM to 5:54 AM, and sunset from 5:57 PM to 5:50 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	31
Daylight (h)	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	12.0	12.0	12.0	12.0	11.9	11.9	11.9	11.9	11.9
Sunrise (AM)	5:58	5:58	5:57	5:57	5:57	5:57	5:56	5:56	5:56	5:56	5:56	5:55	5:55	5:55	5:55	5:55	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54	5:54
Sunset (PM)	5:57	5:57	5:56	5:56	5:56	5:55	5:55	5:55	5:54	5:54	5:54	5:54	5:53	5:53	5:53	5:52	5:52	5:52	5:52	5:52	5:51	5:51	5:51	5:51	5:51	5:51	5:51	5:51	5:50	5:50	5:50

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	12.0	5:58	5:57
2	12.0	5:58	5:57
3	12.0	5:57	5:56
4	12.0	5:57	5:56
5	12.0	5:57	5:56
6	12.0	5:57	5:55
7	12.0	5:56	5:55
8	12.0	5:56	5:55
9	12.0	5:56	5:54
10	12.0	5:56	5:54
11	12.0	5:56	5:54
12	12.0	5:55	5:54
13	12.0	5:55	5:53
14	12.0	5:55	5:53
15	12.0	5:55	5:53
16	12.0	5:55	5:52
17	12.0	5:54	5:52
18	12.0	5:54	5:52
19	12.0	5:54	5:52
20	12.0	5:54	5:52
21	12.0	5:54	5:51
22	12.0	5:54	5:51
23	12.0	5:54	5:51
24	12.0	5:54	5:51
25	12.0	5:54	5:51
26	12.0	5:54	5:51
27	11.9	5:54	5:51
28	11.9	5:54	5:51
29	11.9	5:54	5:50
30	11.9	5:54	5:50
31	11.9	5:54	5:50

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 5.07 kWh/m².

For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 5.59 kWh/m² in September across the year — October's 5.07 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	31
Solar energy (kWh/m²)	5.4	5.4	5.3	5.3	5.3	5.3	5.3	5.3	5.2	5.2	5.2	5.2	5.2	5.1	5.1	5.1	5.1	5.0	5.0	5.0	5.0	4.9	4.9	4.9	4.9	4.8	4.8	4.8	4.8	4.8	4.7
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.4	Bright
2	5.4	Bright
3	5.3	Bright
4	5.3	Bright
5	5.3	Bright
6	5.3	Bright
7	5.3	Bright
8	5.3	Bright
9	5.2	Bright
10	5.2	Bright
11	5.2	Bright
12	5.2	Bright
13	5.2	Bright
14	5.1	Bright
15	5.1	Bright
16	5.1	Bright
17	5.1	Bright
18	5.0	Bright
19	5.0	Bright
20	5.0	Bright
21	5.0	Bright
22	4.9	Bright
23	4.9	Bright
24	4.9	Bright
25	4.9	Bright
26	4.8	Bright
27	4.8	Bright
28	4.8	Bright
29	4.8	Bright
30	4.8	Bright
31	4.7	Bright

Planning a trip in October

Is October a good time to visit La Unión?

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

3.6

Sightseeing

6th-best month of the year

2.8

Beach & pool

6th-best month of the year

October is a weaker month for outdoor sightseeing in La Unión.

What to pack for La Unión in October

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

In October, La Unión sees daytime highs around 23°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 30 days see rain.

rain gearlight clothessun protection

UV index in La Unión in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October 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 La Unión peaks around February 19 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 24 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)	15	16	16	14	15	13	12	12	14	14	13	13
Level	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	15	Extreme
Feb	16	Extreme
Mar	16	Extreme
Apr	14	Extreme
May	15	Extreme
Jun	13	Extreme
Jul	12	Extreme
Aug	12	Extreme
Sep	14	Extreme
Oct	14	Extreme
Nov	13	Extreme
Dec	13	Extreme

Air quality in La Unión in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in La Unión is worst in March — around 18 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (July, 11 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)	14	18	18	16	13	11	11	14	17	15	14	14
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Moderate	Moderate	Moderate	Moderate	Moderate

	PM2.5 (µg/m³)	Level
Jan	14	Moderate
Feb	18	Moderate
Mar	18	Moderate
Apr	16	Moderate
May	13	Moderate
Jun	11	Good
Jul	11	Good
Aug	14	Moderate
Sep	17	Moderate
Oct	15	Moderate
Nov	14	Moderate
Dec	14	Moderate

Location & terrain

Where is La Unión?

La Unión sits at 1.6°N, 77.1°W, 1,721 m above sea level, in Colombia. The nearest listed city is San Lorenzo, 15 km away.

Topography around La Unión

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

Within 3 km, the terrain around La Unión has large variations in elevation — a maximum elevation change of 1,092 m around an average of 1,673 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,489 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,093 m.

The land around La Unión is covered by trees (94%) within 3 km, trees (64%) and grassland (36%) within 16 km, and trees (76%) and grassland (23%) within 80 km.

3 km

1,092 m

trees 94%

16 km

2,489 m

trees 64%

80 km

4,093 m

trees 76%

treesgrasslandartificial surfaces

← September La Unión year-round climate November →Best places to visit in October

October weather nearby: San Lorenzo 15 km · Buesaco 25 km · Providencia 37 km · Pasto 46 km · Balboa 50 km · Patía 52 km · Samaniego 59 km · Mocoa 73 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 La Unión (1.6045°, -77.1315°, elevation 1,721 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	23	15
2	23	15
3	23	15
4	23	15
5	23	15
6	23	15
7	23	15
8	23	15
9	23	15
10	23	15
11	23	15
12	23	15
13	23	15
14	23	15
15	23	15
16	23	15
17	23	15
18	23	15
19	23	15
20	23	15
21	23	15
22	23	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
31	22	15

	Clearer (%)	Cloudier (%)
1	9	91
2	9	91
3	8	92
4	8	92
5	8	92
6	8	92
7	7	93
8	7	93
9	7	93
10	6	94
11	6	94
12	6	94
13	6	94
14	6	94
15	5	95
16	4	96
17	4	96
18	4	96
19	3	97
20	3	97
21	3	97
22	3	97
23	3	97
24	2	98
25	2	98
26	2	98
27	2	98
28	2	98
29	2	98
30	2	98
31	2	98

	Rain chance (%)
1	91
2	91
3	91
4	91
5	92
6	92
7	92
8	92
9	93
10	93
11	93
12	93
13	93
14	94
15	94
16	94
17	95
18	95
19	96
20	96
21	96
22	97
23	97
24	97
25	97
26	98
27	98
28	98
29	98
30	98
31	98

	Dry (%)	Comfortable (%)	Humid (%)
1	3	82	15
2	3	81	16
3	3	80	17
4	2	80	18
5	2	79	19
6	2	78	20
7	2	77	21
8	2	76	22
9	2	75	23
10	2	74	24
11	2	73	25
12	2	73	25
13	2	72	26
14	2	71	27
15	2	71	27
16	2	70	28
17	2	69	29
18	2	68	30
19	2	67	31
20	2	66	32
21	2	65	33
22	2	64	34
23	1	64	35
24	1	63	36
25	1	63	36
26	1	62	37
27	1	61	38
28	1	60	39
29	1	59	40
30	1	59	40
31	1	58	41

	Avg high (°C)	Avg low (°C)
1	23	15
2	23	15
3	23	15
4	23	15
5	23	15
6	23	15
7	23	15
8	23	15
9	23	15
10	23	15
11	23	15
12	23	15
13	23	15
14	23	15
15	23	15
16	23	15
17	23	15
18	23	15
19	23	15
20	23	15
21	23	15
22	23	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
31	22	15

	Clearer (%)	Cloudier (%)
1	9	91
2	9	91
3	8	92
4	8	92
5	8	92
6	8	92
7	7	93
8	7	93
9	7	93
10	6	94
11	6	94
12	6	94
13	6	94
14	6	94
15	5	95
16	4	96
17	4	96
18	4	96
19	3	97
20	3	97
21	3	97
22	3	97
23	3	97
24	2	98
25	2	98
26	2	98
27	2	98
28	2	98
29	2	98
30	2	98
31	2	98

	Rain chance (%)
1	91
2	91
3	91
4	91
5	92
6	92
7	92
8	92
9	93
10	93
11	93
12	93
13	93
14	94
15	94
16	94
17	95
18	95
19	96
20	96
21	96
22	97
23	97
24	97
25	97
26	98
27	98
28	98
29	98
30	98
31	98

	Dry (%)	Comfortable (%)	Humid (%)
1	3	82	15
2	3	81	16
3	3	80	17
4	2	80	18
5	2	79	19
6	2	78	20
7	2	77	21
8	2	76	22
9	2	75	23
10	2	74	24
11	2	73	25
12	2	73	25
13	2	72	26
14	2	71	27
15	2	71	27
16	2	70	28
17	2	69	29
18	2	68	30
19	2	67	31
20	2	66	32
21	2	65	33
22	2	64	34
23	1	64	35
24	1	63	36
25	1	63	36
26	1	62	37
27	1	61	38
28	1	60	39
29	1	59	40
30	1	59	40
31	1	58	41

	Avg high (°C)	Avg low (°C)
1	23	15
2	23	15
3	23	15
4	23	15
5	23	15
6	23	15
7	23	15
8	23	15
9	23	15
10	23	15
11	23	15
12	23	15
13	23	15
14	23	15
15	23	15
16	23	15
17	23	15
18	23	15
19	23	15
20	23	15
21	23	15
22	23	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
31	22	15

	Clearer (%)	Cloudier (%)
1	9	91
2	9	91
3	8	92
4	8	92
5	8	92
6	8	92
7	7	93
8	7	93
9	7	93
10	6	94
11	6	94
12	6	94
13	6	94
14	6	94
15	5	95
16	4	96
17	4	96
18	4	96
19	3	97
20	3	97
21	3	97
22	3	97
23	3	97
24	2	98
25	2	98
26	2	98
27	2	98
28	2	98
29	2	98
30	2	98
31	2	98

	Rain chance (%)
1	91
2	91
3	91
4	91
5	92
6	92
7	92
8	92
9	93
10	93
11	93
12	93
13	93
14	94
15	94
16	94
17	95
18	95
19	96
20	96
21	96
22	97
23	97
24	97
25	97
26	98
27	98
28	98
29	98
30	98
31	98

	Dry (%)	Comfortable (%)	Humid (%)
1	3	82	15
2	3	81	16
3	3	80	17
4	2	80	18
5	2	79	19
6	2	78	20
7	2	77	21
8	2	76	22
9	2	75	23
10	2	74	24
11	2	73	25
12	2	73	25
13	2	72	26
14	2	71	27
15	2	71	27
16	2	70	28
17	2	69	29
18	2	68	30
19	2	67	31
20	2	66	32
21	2	65	33
22	2	64	34
23	1	64	35
24	1	63	36
25	1	63	36
26	1	62	37
27	1	61	38
28	1	60	39
29	1	59	40
30	1	59	40
31	1	58	41