Río Colorado weather in May

In May, Río Colorado sees average daytime highs of 17°C and overnight lows near 6°C, with 29 mm of rain across 4.5 wet days and about 9.9 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 15°C by the end. The sky is clear or mostly clear about 39% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 24 min at the start of May to 9 h 30 min by month's end. Set against the rest of the year, May is Río Colorado's 12th-clearest and 12th-windiest month. For the whole year in context, see Río Colorado's year-round climate.

Daytime high: 17°; 9th warmest
Overnight low: 6°; 4th coldest
Rainfall: 29 mm; 4.5 wet days
Daylight: 9 h 54 min; 8:16 AM – 6:09 PM
Cloud cover: 54%; 12th clearest
Wind: 13 km/h; 12th windiest
Solar energy: 2.42 kWh/m²
Travel score: 6.1; out of 10

Río Colorado is human settlement in Pichi Mahuida, Río Negro, Argentina.

Founded: 1901

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

← April Río Colorado year-round climate June →Best places to visit in May

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 19°C in the first days to 15°C by the end.

A typical May day in Río Colorado reaches about 17°C in the afternoon and slips back to 6°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 21°C. Set against its neighbours, May runs about 5°C cooler than April and about 3°C warmer than June.

	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)	19	19	19	19	19	19	18	18	18	18	18	18	17	17	17	17	17	17	16	16	16	16	16	16	15	15	15	15	15	15	15
Avg low (°C)	8	8	8	8	8	8	7	7	7	7	7	7	7	7	7	6	6	6	6	6	6	5	5	5	5	5	5	5	5	5	4

	Avg high (°C)	Avg low (°C)
1	19	8
2	19	8
3	19	8
4	19	8
5	19	8
6	19	8
7	18	7
8	18	7
9	18	7
10	18	7
11	18	7
12	18	7
13	17	7
14	17	7
15	17	7
16	17	6
17	17	6
18	17	6
19	16	6
20	16	6
21	16	6
22	16	5
23	16	5
24	16	5
25	15	5
26	15	5
27	15	5
28	15	5
29	15	5
30	15	5
31	15	4

How May really feels in Río Colorado

Once humidity and wind are folded in, May averages 0 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

heat index over the day's high

Days feeling ≤ 0°C

wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Río Colorado weather by month

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

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	31° / 17°	43	5.6	14.4	5.5
Feb	29° / 16°	52	5.6	13.5	6.4
Mar	26° / 14°	56	6.1	12.3	7.7
Apr	21° / 10°	47	5.2	11	7.5
May	17° / 6°	29	4.5	9.9	6.1
Jun	14° / 4°	21	3.9	9.3	4.5
Jul	13° / 3°	19	3.7	9.5	4.3
Aug	16° / 4°	26	3.7	10.5	5.7
Sep	19° / 6°	38	4.8	11.7	6.8
Oct	22° / 9°	50	6.7	13	7.3
Nov	26° / 13°	51	6.7	14.1	7.6
Dec	29° / 15°	39	5.7	14.7	6.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% 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 49%.

	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 (%)	56	56	55	55	55	55	54	55	54	53	52	51	50	50	50	49	49	48	48	48	47	47	47	47	48	48	49	49	50	51	50
Cloudier (%)	44	44	45	45	45	45	46	45	46	47	48	49	50	50	50	51	51	52	52	52	53	53	53	53	52	52	51	51	50	49	50

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	55	45
4	55	45
5	55	45
6	55	45
7	54	46
8	55	45
9	54	46
10	53	47
11	52	48
12	51	49
13	50	50
14	50	50
15	50	50
16	49	51
17	49	51
18	48	52
19	48	52
20	48	52
21	47	53
22	47	53
23	47	53
24	47	53
25	48	52
26	48	52
27	49	51
28	49	51
29	50	50
30	51	49
31	50	50

Chance of precipitation in May

Any precipitation

Río Colorado gets around 29 mm of rain over 4.5 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 14% and peaks near 15% 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	31
Rain chance (%)	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	15	14	14	14	14	14	13	13	13	12	12	12	12

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

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 97% 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 (%)	95	95	95	95	95	95	95	95	96	96	96	96	96	96	97	97	97	97	98	98	98	98	98	98	99	99	99	99	99	99	99
Comfortable (%)	5	5	5	5	5	5	5	5	4	4	4	4	4	4	3	3	3	3	2	2	2	2	2	2	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	95	5
9	96	4
10	96	4
11	96	4
12	96	4
13	96	4
14	96	4
15	97	3
16	97	3
17	97	3
18	97	3
19	98	2
20	98	2
21	98	2
22	98	2
23	98	2
24	98	2
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

Wind in May

Winds average 13 km/h in May, the calmest month.

Across May, daily wind ranges from about 13 km/h on the calmest days to 14 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)	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	14	14	14
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

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

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 24 min at the start of May to 9 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over May. Sunrise moves from 8:02 AM to 8:29 AM, and sunset from 6:25 PM to 5:59 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)	10.4	10.4	10.3	10.3	10.2	10.2	10.2	10.1	10.1	10.1	10.0	10.0	10.0	9.9	9.9	9.9	9.8	9.8	9.8	9.8	9.7	9.7	9.7	9.7	9.6	9.6	9.6	9.6	9.5	9.5	9.5
Sunrise (AM)	8:02	8:03	8:04	8:05	8:06	8:07	8:08	8:09	8:10	8:11	8:12	8:13	8:14	8:14	8:15	8:16	8:17	8:18	8:19	8:20	8:21	8:22	8:23	8:23	8:24	8:25	8:26	8:27	8:27	8:28	8:29
Sunset (PM)	6:25	6:24	6:23	6:22	6:20	6:19	6:18	6:17	6:16	6:15	6:14	6:13	6:12	6:11	6:10	6:09	6:08	6:07	6:06	6:06	6:05	6:04	6:03	6:03	6:02	6:01	6:01	6:00	6:00	5:59	5:59

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.4	8:02	6:25
2	10.4	8:03	6:24
3	10.3	8:04	6:23
4	10.3	8:05	6:22
5	10.2	8:06	6:20
6	10.2	8:07	6:19
7	10.2	8:08	6:18
8	10.1	8:09	6:17
9	10.1	8:10	6:16
10	10.1	8:11	6:15
11	10.0	8:12	6:14
12	10.0	8:13	6:13
13	10.0	8:14	6:12
14	9.9	8:14	6:11
15	9.9	8:15	6:10
16	9.9	8:16	6:09
17	9.8	8:17	6:08
18	9.8	8:18	6:07
19	9.8	8:19	6:06
20	9.8	8:20	6:06
21	9.7	8:21	6:05
22	9.7	8:22	6:04
23	9.7	8:23	6:03
24	9.7	8:23	6:03
25	9.6	8:24	6:02
26	9.6	8:25	6:01
27	9.6	8:26	6:01
28	9.6	8:27	6:00
29	9.5	8:27	6:00
30	9.5	8:28	5:59
31	9.5	8:29	5:59

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.42 kWh/m².

For context, solar energy here swings from a low near 1.97 kWh/m² to a high of 8.08 kWh/m² in December across the year — May's 2.42 kWh/m² sits near the bottom.

	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)	2.9	2.9	2.8	2.8	2.8	2.7	2.7	2.7	2.6	2.6	2.6	2.5	2.5	2.5	2.4	2.4	2.4	2.3	2.3	2.3	2.3	2.3	2.2	2.2	2.2	2.2	2.2	2.1	2.1	2.1	2.1
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	Moderate

	Solar energy (kWh/m²)	Level
1	2.9	Moderate
2	2.9	Moderate
3	2.8	Moderate
4	2.8	Moderate
5	2.8	Moderate
6	2.7	Moderate
7	2.7	Moderate
8	2.7	Moderate
9	2.6	Moderate
10	2.6	Moderate
11	2.6	Moderate
12	2.5	Moderate
13	2.5	Moderate
14	2.5	Moderate
15	2.4	Moderate
16	2.4	Moderate
17	2.4	Moderate
18	2.3	Moderate
19	2.3	Moderate
20	2.3	Moderate
21	2.3	Moderate
22	2.3	Moderate
23	2.2	Moderate
24	2.2	Moderate
25	2.2	Moderate
26	2.2	Moderate
27	2.2	Moderate
28	2.1	Moderate
29	2.1	Moderate
30	2.1	Moderate
31	2.1	Moderate

Planning a trip in May

Is May a good time to visit Río Colorado?

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

6.1

Sightseeing

8th-best month of the year

1.4

Beach & pool

9th-best month of the year

May is a reasonable time to visit Río Colorado for sightseeing.

What to pack for Río Colorado in May

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

In May, Río Colorado sees daytime highs around 17°C and nights near 6°C. Worth packing: a warm layer. About 5 days see rain.

a warm layer

UV index in Río Colorado in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Río Colorado peaks around December 20 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	12	12	8	5	3	2	2	3	5	7	10	12
Level	Extreme	Extreme	Very high	High	Moderate	Low	Low	Moderate	Moderate	Very high	Very high	Extreme

	UV index (midday)	Level
Jan	12	Extreme
Feb	12	Extreme
Mar	8	Very high
Apr	5	High
May	3	Moderate
Jun	2	Low
Jul	2	Low
Aug	3	Moderate
Sep	5	Moderate
Oct	7	Very high
Nov	10	Very high
Dec	12	Extreme

Location & terrain

Where is Río Colorado?

Río Colorado sits at 39.0°S, 64.1°W, 76 m above sea level, in Argentina. The nearest listed city is Bahía Blanca, 161 km away.

Topography around Río Colorado

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

Within 3 km, the terrain around Río Colorado has only modest variations in elevation — a maximum elevation change of 54 m around an average of 89 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 83 m; within 80 km, significant variations in elevation — a maximum elevation change of 359 m.

The land around Río Colorado is covered by grassland (46%) and shrubs (20%) within 3 km, shrubs (71%) and grassland (21%) within 16 km, and shrubs (79%) within 80 km.

3 km

54 m

grassland 46%

16 km

83 m

shrubs 71%

80 km

359 m

shrubs 79%

treesshrubsgrasslandcroplandartificial surfacesbare terrainwater

← April Río Colorado year-round climate June →Best places to visit in May

May weather nearby: Bahía Blanca 161 km · Punta Alta 175 km · General Acha 185 km · San Antonio Oeste 207 km · Pigüé 213 km · Carmen de Patagones 223 km · Viedma 223 km · Coronel Suárez 254 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

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 Río Colorado (-38.9908°, -64.0957°, elevation 76 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. 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	19	8
2	19	8
3	19	8
4	19	8
5	19	8
6	19	8
7	18	7
8	18	7
9	18	7
10	18	7
11	18	7
12	18	7
13	17	7
14	17	7
15	17	7
16	17	6
17	17	6
18	17	6
19	16	6
20	16	6
21	16	6
22	16	5
23	16	5
24	16	5
25	15	5
26	15	5
27	15	5
28	15	5
29	15	5
30	15	5
31	15	4

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	55	45
4	55	45
5	55	45
6	55	45
7	54	46
8	55	45
9	54	46
10	53	47
11	52	48
12	51	49
13	50	50
14	50	50
15	50	50
16	49	51
17	49	51
18	48	52
19	48	52
20	48	52
21	47	53
22	47	53
23	47	53
24	47	53
25	48	52
26	48	52
27	49	51
28	49	51
29	50	50
30	51	49
31	50	50

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

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	95	5
9	96	4
10	96	4
11	96	4
12	96	4
13	96	4
14	96	4
15	97	3
16	97	3
17	97	3
18	97	3
19	98	2
20	98	2
21	98	2
22	98	2
23	98	2
24	98	2
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

	Avg high (°C)	Avg low (°C)
1	19	8
2	19	8
3	19	8
4	19	8
5	19	8
6	19	8
7	18	7
8	18	7
9	18	7
10	18	7
11	18	7
12	18	7
13	17	7
14	17	7
15	17	7
16	17	6
17	17	6
18	17	6
19	16	6
20	16	6
21	16	6
22	16	5
23	16	5
24	16	5
25	15	5
26	15	5
27	15	5
28	15	5
29	15	5
30	15	5
31	15	4

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	55	45
4	55	45
5	55	45
6	55	45
7	54	46
8	55	45
9	54	46
10	53	47
11	52	48
12	51	49
13	50	50
14	50	50
15	50	50
16	49	51
17	49	51
18	48	52
19	48	52
20	48	52
21	47	53
22	47	53
23	47	53
24	47	53
25	48	52
26	48	52
27	49	51
28	49	51
29	50	50
30	51	49
31	50	50

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

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	95	5
9	96	4
10	96	4
11	96	4
12	96	4
13	96	4
14	96	4
15	97	3
16	97	3
17	97	3
18	97	3
19	98	2
20	98	2
21	98	2
22	98	2
23	98	2
24	98	2
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1

	Avg high (°C)	Avg low (°C)
1	19	8
2	19	8
3	19	8
4	19	8
5	19	8
6	19	8
7	18	7
8	18	7
9	18	7
10	18	7
11	18	7
12	18	7
13	17	7
14	17	7
15	17	7
16	17	6
17	17	6
18	17	6
19	16	6
20	16	6
21	16	6
22	16	5
23	16	5
24	16	5
25	15	5
26	15	5
27	15	5
28	15	5
29	15	5
30	15	5
31	15	4

	Clearer (%)	Cloudier (%)
1	56	44
2	56	44
3	55	45
4	55	45
5	55	45
6	55	45
7	54	46
8	55	45
9	54	46
10	53	47
11	52	48
12	51	49
13	50	50
14	50	50
15	50	50
16	49	51
17	49	51
18	48	52
19	48	52
20	48	52
21	47	53
22	47	53
23	47	53
24	47	53
25	48	52
26	48	52
27	49	51
28	49	51
29	50	50
30	51	49
31	50	50

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

	Dry (%)	Comfortable (%)
1	95	5
2	95	5
3	95	5
4	95	5
5	95	5
6	95	5
7	95	5
8	95	5
9	96	4
10	96	4
11	96	4
12	96	4
13	96	4
14	96	4
15	97	3
16	97	3
17	97	3
18	97	3
19	98	2
20	98	2
21	98	2
22	98	2
23	98	2
24	98	2
25	99	1
26	99	1
27	99	1
28	99	1
29	99	1
30	99	1
31	99	1