Santa Rosa weather in May

In May, Santa Rosa sees average daytime highs of 17°C and overnight lows near 7°C, with 30 mm of rain across 5 wet days and about 10.1 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 38% of the time in May, and the air most often feels dry.

Daylight stretches from about 10 h 30 min at the start of May to 9 h 42 min by month's end. Set against the rest of the year, May is Santa Rosa's 12th-clearest and 11th-windiest month. For the whole year in context, see Santa Rosa's year-round climate.

Daytime high: 17°; 9th warmest
Overnight low: 7°; 4th coldest
Rainfall: 30 mm; 5 wet days
Daylight: 10 h 06 min; 8:12 AM – 6:15 PM
Cloud cover: 55%; 12th clearest
Wind: 10 km/h; 11th windiest
Solar energy: 2.61 kWh/m²
Travel score: 6.2; out of 10

Santa Rosa is capital of La Pampa Province, Argentina.

Density: 69/km²; people per km²
Founded: 1892

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

← April Santa Rosa 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 Santa Rosa reaches about 17°C in the afternoon and slips back to 7°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 22°C. Set against its neighbours, May runs about 4°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)	20	19	19	19	19	19	19	19	18	18	18	18	18	18	17	17	17	17	17	17	16	16	16	16	16	16	16	16	15	15	15
Avg low (°C)	9	9	9	9	9	9	9	8	8	8	8	8	8	8	8	7	7	7	7	7	7	7	6	6	6	6	6	6	6	5	5

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

How May really feels in Santa Rosa

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.

Santa Rosa 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	30° / 18°	82	9	14.2	5.6
Feb	28° / 17°	81	7.9	13.4	6.4
Mar	26° / 15°	86	8	12.3	7.4
Apr	22° / 11°	67	6.3	11.1	7.4
May	17° / 7°	30	5	10.1	6.2
Jun	14° / 4°	17	3.3	9.5	4.8
Jul	14° / 3°	19	3.7	9.8	4.6
Aug	16° / 5°	27	4	10.6	6.1
Sep	19° / 7°	48	5.8	11.8	6.9
Oct	22° / 11°	83	9.6	12.9	6.9
Nov	26° / 14°	74	8.1	14	7.4
Dec	29° / 16°	85	8.5	14.5	6.3

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% 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 50%.

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

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

Chance of precipitation in May

Any precipitation

Santa Rosa gets around 30 mm of rain over 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 16% and peaks near 18% 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 (%)	16	16	16	16	16	16	16	16	17	17	17	17	17	18	18	18	18	18	17	17	17	16	16	15	14	14	13	12	12	11	10

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

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 91% 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 (%)	85	85	85	87	87	87	87	87	87	89	89	89	90	90	90	92	92	92	92	93	93	93	94	94	95	95	95	96	96	96	97
Comfortable (%)	11	11	11	10	10	10	10	10	10	9	9	9	8	8	8	7	7	7	7	6	6	6	5	5	4	4	4	3	3	3	2
Humid (%)	4	4	4	3	3	3	3	3	3	2	2	2	2	2	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)	Humid (%)
1	85	11	4
2	85	11	4
3	85	11	4
4	87	10	3
5	87	10	3
6	87	10	3
7	87	10	3
8	87	10	3
9	87	10	3
10	89	9	2
11	89	9	2
12	89	9	2
13	90	8	2
14	90	8	2
15	90	8	2
16	92	7	1
17	92	7	1
18	92	7	1
19	92	7	1
20	93	6	1
21	93	6	1
22	93	6	1
23	94	5	1
24	94	5	1
25	95	4	1
26	95	4	1
27	95	4	1
28	96	3	1
29	96	3	1
30	96	3	1
31	97	2	1

Wind in May

Winds average 10 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 11 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)	11	11	11	11	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
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	11	calm
2	11	calm
3	11	calm
4	11	calm
5	10	calm
6	10	calm
7	10	calm
8	10	calm
9	10	calm
10	10	calm
11	10	calm
12	10	calm
13	10	calm
14	10	calm
15	10	calm
16	10	calm
17	10	calm
18	10	calm
19	10	calm
20	10	calm
21	10	calm
22	10	calm
23	10	calm
24	10	calm
25	10	calm
26	10	calm
27	10	calm
28	10	calm
29	10	calm
30	10	calm
31	10	calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 10 h 30 min at the start of May to 9 h 42 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 7:59 AM to 8:23 AM, and sunset from 6:30 PM to 6:06 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)	10.5	10.5	10.5	10.4	10.4	10.4	10.3	10.3	10.3	10.2	10.2	10.2	10.1	10.1	10.1	10.1	10.0	10.0	10.0	9.9	9.9	9.9	9.9	9.9	9.8	9.8	9.8	9.8	9.7	9.7	9.7
Sunrise (AM)	7:59	8:00	8:00	8:01	8:02	8:03	8:04	8:05	8:06	8:07	8:07	8:08	8:09	8:10	8:11	8:12	8:13	8:13	8:14	8:15	8:16	8:17	8:17	8:18	8:19	8:20	8:21	8:21	8:22	8:23	8:23
Sunset (PM)	6:30	6:29	6:28	6:27	6:26	6:24	6:23	6:22	6:21	6:20	6:19	6:19	6:18	6:17	6:16	6:15	6:14	6:13	6:13	6:12	6:11	6:11	6:10	6:09	6:09	6:08	6:08	6:07	6:07	6:06	6:06

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.5	7:59	6:30
2	10.5	8:00	6:29
3	10.5	8:00	6:28
4	10.4	8:01	6:27
5	10.4	8:02	6:26
6	10.4	8:03	6:24
7	10.3	8:04	6:23
8	10.3	8:05	6:22
9	10.3	8:06	6:21
10	10.2	8:07	6:20
11	10.2	8:07	6:19
12	10.2	8:08	6:19
13	10.1	8:09	6:18
14	10.1	8:10	6:17
15	10.1	8:11	6:16
16	10.1	8:12	6:15
17	10.0	8:13	6:14
18	10.0	8:13	6:13
19	10.0	8:14	6:13
20	9.9	8:15	6:12
21	9.9	8:16	6:11
22	9.9	8:17	6:11
23	9.9	8:17	6:10
24	9.9	8:18	6:09
25	9.8	8:19	6:09
26	9.8	8:20	6:08
27	9.8	8:21	6:08
28	9.8	8:21	6:07
29	9.7	8:22	6:07
30	9.7	8:23	6:06
31	9.7	8:23	6:06

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 2.61 kWh/m².

For context, solar energy here swings from a low near 2.24 kWh/m² to a high of 7.87 kWh/m² in December across the year — May's 2.61 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)	3.1	3.1	3.0	3.0	3.0	2.9	2.9	2.9	2.8	2.8	2.7	2.7	2.7	2.6	2.6	2.6	2.5	2.5	2.5	2.5	2.5	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.4	2.3	2.3
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	3.1	Moderate
2	3.1	Moderate
3	3.0	Moderate
4	3.0	Moderate
5	3.0	Moderate
6	2.9	Moderate
7	2.9	Moderate
8	2.9	Moderate
9	2.8	Moderate
10	2.8	Moderate
11	2.7	Moderate
12	2.7	Moderate
13	2.7	Moderate
14	2.6	Moderate
15	2.6	Moderate
16	2.6	Moderate
17	2.5	Moderate
18	2.5	Moderate
19	2.5	Moderate
20	2.5	Moderate
21	2.5	Moderate
22	2.4	Moderate
23	2.4	Moderate
24	2.4	Moderate
25	2.4	Moderate
26	2.4	Moderate
27	2.4	Moderate
28	2.4	Moderate
29	2.4	Moderate
30	2.3	Moderate
31	2.3	Moderate

Planning a trip in May

Is May a good time to visit Santa Rosa?

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

6.2

Sightseeing

8th-best month of the year

1.7

Beach & pool

9th-best month of the year

May is a reasonable time to visit Santa Rosa for sightseeing.

What to pack for Santa Rosa in May

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

In May, Santa Rosa sees daytime highs around 17°C and nights near 7°C. Worth packing: a warm layer. About 5 days see rain.

a warm layer

UV index in Santa Rosa in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santa Rosa peaks around January 1 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	12	9	6	3	2	2	4	5	8	11	13
Level	Extreme	Extreme	Very high	High	Moderate	Moderate	Moderate	Moderate	High	Very high	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	12	Extreme
Mar	9	Very high
Apr	6	High
May	3	Moderate
Jun	2	Moderate
Jul	2	Moderate
Aug	4	Moderate
Sep	5	High
Oct	8	Very high
Nov	11	Extreme
Dec	13	Extreme

Location & terrain

Where is Santa Rosa?

Santa Rosa sits at 36.6°S, 64.3°W, 163 m above sea level, in Argentina. The nearest listed city is Toay, 10 km away.

Topography around Santa Rosa

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

Within 3 km, the terrain around Santa Rosa has only modest variations in elevation — a maximum elevation change of 34 m around an average of 180 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 118 m; within 80 km, significant variations in elevation — a maximum elevation change of 274 m.

The land around Santa Rosa is covered by artificial surfaces (59%) within 3 km, cropland (65%) within 16 km, and cropland (59%) within 80 km.

3 km

34 m

artificial surfaces 59%

16 km

118 m

cropland 65%

80 km

274 m

cropland 59%

treesshrubsgrasslandcroplandartificial surfaceswater

← April Santa Rosa year-round climate June →Best places to visit in May

May weather nearby: Toay 10 km · General Acha 89 km · General Pico 117 km · Trenque Lauquen 157 km · Pigüé 200 km · General Villegas 210 km · Coronel Suárez 229 km · Pehuajó 232 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 Santa Rosa (-36.6162°, -64.2899°, elevation 163 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	20	9
2	19	9
3	19	9
4	19	9
5	19	9
6	19	9
7	19	9
8	19	8
9	18	8
10	18	8
11	18	8
12	18	8
13	18	8
14	18	8
15	17	8
16	17	7
17	17	7
18	17	7
19	17	7
20	17	7
21	16	7
22	16	7
23	16	6
24	16	6
25	16	6
26	16	6
27	16	6
28	16	6
29	15	6
30	15	5
31	15	5

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

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

	Dry (%)	Comfortable (%)	Humid (%)
1	85	11	4
2	85	11	4
3	85	11	4
4	87	10	3
5	87	10	3
6	87	10	3
7	87	10	3
8	87	10	3
9	87	10	3
10	89	9	2
11	89	9	2
12	89	9	2
13	90	8	2
14	90	8	2
15	90	8	2
16	92	7	1
17	92	7	1
18	92	7	1
19	92	7	1
20	93	6	1
21	93	6	1
22	93	6	1
23	94	5	1
24	94	5	1
25	95	4	1
26	95	4	1
27	95	4	1
28	96	3	1
29	96	3	1
30	96	3	1
31	97	2	1

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

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

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

	Dry (%)	Comfortable (%)	Humid (%)
1	85	11	4
2	85	11	4
3	85	11	4
4	87	10	3
5	87	10	3
6	87	10	3
7	87	10	3
8	87	10	3
9	87	10	3
10	89	9	2
11	89	9	2
12	89	9	2
13	90	8	2
14	90	8	2
15	90	8	2
16	92	7	1
17	92	7	1
18	92	7	1
19	92	7	1
20	93	6	1
21	93	6	1
22	93	6	1
23	94	5	1
24	94	5	1
25	95	4	1
26	95	4	1
27	95	4	1
28	96	3	1
29	96	3	1
30	96	3	1
31	97	2	1

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

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

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

	Dry (%)	Comfortable (%)	Humid (%)
1	85	11	4
2	85	11	4
3	85	11	4
4	87	10	3
5	87	10	3
6	87	10	3
7	87	10	3
8	87	10	3
9	87	10	3
10	89	9	2
11	89	9	2
12	89	9	2
13	90	8	2
14	90	8	2
15	90	8	2
16	92	7	1
17	92	7	1
18	92	7	1
19	92	7	1
20	93	6	1
21	93	6	1
22	93	6	1
23	94	5	1
24	94	5	1
25	95	4	1
26	95	4	1
27	95	4	1
28	96	3	1
29	96	3	1
30	96	3	1
31	97	2	1