Colón weather in May

In May, Colón sees average daytime highs of 19°C and overnight lows near 9°C, with 65 mm of rain across 6.5 wet days and about 10.3 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 17°C by the end. The sky is clear or mostly clear about 37% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 42 min at the start of May to 9 h 54 min by month's end. Set against the rest of the year, May is Colón's 12th-clearest and 9th-windiest month. For the whole year in context, see Colón's year-round climate.

Daytime high
19°
9th warmest
Overnight low
5th coldest
Rainfall
65 mm
6.5 wet days
Daylight
10 h 12 min
7:53 AM – 6:08 PM
Cloud cover
56%
12th clearest
Wind
12 km/h
9th windiest
Solar energy
2.74 kWh/m²
Travel score
6.6
out of 10

Colón is human settlement in Buenos Aires, Argentina.

Founded
1892

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 17°C by the end.

A typical May day in Colón reaches about 19°C in the afternoon and slips back to 9°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 24°C. Set against its neighbours, May runs about 4°C cooler than April and about 3°C warmer than June.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12111
22111
32111
42110
52110
62010
72010
82010
92010
102010
112010
122010
131910
141910
15199
16199
17199
18199
19199
20189
21189
22189
23188
24188
25188
26188
27178
28178
29178
30178
31177

Colón weather by month

How May compares with the rest of the year at a glance. May is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 18°1089145.8
Feb28° / 17°1068.713.36.6
Mar26° / 15°998.212.37.2
Apr23° / 12°958.711.27.2
May19° / 656.510.36.6
Jun16° / 394.99.85.5
Jul15° / 324.4105.3
Aug18° / 484.710.76.6
Sep20° / 656.211.87.0
Oct23° / 12°1229.912.97.0
Nov26° / 14°1038.713.87.1
Dec28° / 17°1109.414.26.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 12% of May, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35446
45347
55347
65347
75347
85248
95149
105149
115050
125050
134951
144753
154753
164753
174555
184555
194555
204555
214555
224555
234555
244555
254555
264654
274654
284753
294654
304753
314852

Chance of precipitation in May

Any precipitation

Colón gets around 65 mm of rain over 6.5 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 21% and peaks near 24% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
124
224
323
423
522
622
721
821
921
1021
1120
1220
1321
1421
1521
1621
1721
1821
1921
2021
2121
2221
2321
2421
2520
2620
2720
2819
2919
3018
3118

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 77% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
16917113
26916123
37016113
47115113
57115113
67115113
77314103
87314103
9751492
10761482
11761482
12771472
13771472
14771472
15771472
16771472
17771472
18781471
19781471
20791371
21791371
22801271
23801271
24811171
25821161
26831061
27831061
28841051
2985951
3085951
3186941

Wind in May

Winds average 12 km/h in May.

Across May, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 42 min at the start of May to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over May. Sunrise moves from 7:42 AM to 8:04 AM, and sunset from 6:22 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.77:426:22
210.67:426:21
310.67:436:19
410.67:446:18
510.57:456:17
610.57:466:17
710.57:466:16
810.57:476:15
910.47:486:14
1010.47:496:13
1110.47:496:12
1210.37:506:11
1310.37:516:10
1410.37:526:10
1510.37:536:09
1610.27:536:08
1710.27:546:07
1810.27:556:07
1910.27:566:06
2010.17:566:05
2110.17:576:05
2210.17:586:04
2310.17:586:03
2410.17:596:03
2510.08:006:02
2610.08:016:02
2710.08:016:01
2810.08:026:01
2910.08:036:01
309.98:036:00
319.98:046:00

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.74 kWh/m².

For context, solar energy here swings from a low near 2.35 kWh/m² to a high of 7.38 kWh/m² in December across the year — May's 2.74 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.2Moderate
23.2Moderate
33.2Moderate
43.1Moderate
53.1Moderate
63.1Moderate
73.0Moderate
83.0Moderate
93.0Moderate
102.9Moderate
112.9Moderate
122.9Moderate
132.8Moderate
142.8Moderate
152.8Moderate
162.7Moderate
172.7Moderate
182.6Moderate
192.6Moderate
202.6Moderate
212.6Moderate
222.5Moderate
232.5Moderate
242.5Moderate
252.5Moderate
262.5Moderate
272.5Moderate
282.5Moderate
292.5Moderate
302.4Moderate
312.4Moderate
Planning a trip in May

Is May a good time to visit Colón?

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

6.6
Sightseeing
6th-best month of the year
2.9
Beach & pool
9th-best month of the year

May is a reasonable time to visit Colón for sightseeing.

What to pack for Colón in May

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

In May, Colón sees daytime highs around 19°C and nights near 9°C. Little to plan around — just the basics. About 7 days see rain.

UV index in Colón in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Colón peaks around January 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 15UV 13Jun 20UV 3
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct9Very high
Nov11Extreme
Dec12Extreme

Air quality in Colón in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Colón is worst in August — around 16 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (April, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1916 µg/m³Apr 177 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb7Good
Mar7Good
Apr6Good
May7Good
Jun9Good
Jul11Good
Aug16Moderate
Sep14Moderate
Oct9Good
Nov7Good
Dec8Good
Location & terrain

Where is Colón?

Colón sits at 33.9°S, 61.1°W, 81 m above sea level, in Argentina. The nearest listed city is Rojas, 47 km away.

Topography around Colón

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

Within 3 km, the terrain around Colón has only modest variations in elevation — a maximum elevation change of 22 m around an average of 82 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 55 m; within 80 km, only modest variations in elevation — a maximum elevation change of 101 m.

The land around Colón is covered by cropland (51%), grassland (22%) and artificial surfaces (20%) within 3 km, cropland (89%) within 16 km, and cropland (89%) within 80 km.

3 km
22 m
16 km
55 m
80 km
101 m
treesgrasslandcroplandartificial surfaceswater
May weather nearby: Rojas 47 km · Pergamino 48 km · Firmat 60 km · Junín 79 km · Venado Tuerto 82 km · Salto 89 km · Arrecifes 94 km · Casilda 95 km

Argentina travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / I
220 V · 50 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$14,898
2025
Happiness
6.4 / 10
World Happiness, 2025
Homicide rate
4.5
per 100k, 2023
Road deaths
14.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 575
Religion
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus Christ 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 Colón (-33.8971°, -61.0994°, elevation 81 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).