San Martín weather in April

In April, San Martín sees average daytime highs of 23°C and overnight lows near 12°C, with 20 mm of rain across 4.3 wet days and about 11.2 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 25°C in the first days to 21°C by the end. The sky is clear or mostly clear about 60% of the time in April, and the air most often feels dry.

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

Daytime high: 23°; 7th warmest
Overnight low: 12°; 6th coldest
Rainfall: 20 mm; 4.3 wet days
Daylight: 11 h 12 min; 7:59 AM – 7:10 PM
Cloud cover: 36%; 10th clearest
Wind: 10 km/h; 9th windiest
Solar energy: 4.03 kWh/m²
Travel score: 8.2; out of 10

San Martín is city in the Mendoza Province, Argentina.

Density: 55/km²; people per km²
Founded: 1816

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

← March San Martín year-round climate May →Best places to visit in April

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

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 25°C in the first days to 21°C by the end.

A typical April day in San Martín reaches about 23°C in the afternoon and slips back to 12°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 29°C. Set against its neighbours, April runs about 5°C cooler than March and about 5°C warmer than May.

	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
Avg high (°C)	25	25	25	25	25	25	24	24	24	24	24	24	24	24	23	23	23	23	23	23	23	22	22	22	22	22	22	21	21	21
Avg low (°C)	14	14	14	14	14	14	13	13	13	13	13	13	12	12	12	12	12	12	12	11	11	11	11	11	11	11	10	10	10	10

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

How April really feels in San Martín

Once humidity and wind are folded in, April 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

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

San Martín weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 7th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	33° / 21°	48	7.8	13.9	4.0
Feb	31° / 19°	37	6.3	13.2	5.0
Mar	28° / 17°	43	6.2	12.3	6.9
Apr	23° / 12°	20	4.3	11.2	8.2
May	19° / 8°	13	2.6	10.3	7.2
Jun	15° / 4°	6	1.3	9.9	5.9
Jul	15° / 3°	6	1.6	10	5.9
Aug	18° / 6°	10	1.9	10.8	7.6
Sep	22° / 10°	12	2.3	11.8	8.4
Oct	26° / 14°	20	3.9	12.8	8.1
Nov	30° / 17°	27	5.1	13.7	6.1
Dec	32° / 19°	38	6.7	14.1	4.4

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 12% of April, with mostly cloudy or overcast conditions the remaining 28%.

	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
Clearer (%)	73	74	74	74	74	74	74	74	74	74	74	74	74	73	73	73	73	73	72	72	71	71	71	70	70	69	68	68	67	67
Cloudier (%)	27	26	26	26	26	26	26	26	26	26	26	26	26	27	27	27	27	27	28	28	29	29	29	30	30	31	32	32	33	33

	Clearer (%)	Cloudier (%)
1	73	27
2	74	26
3	74	26
4	74	26
5	74	26
6	74	26
7	74	26
8	74	26
9	74	26
10	74	26
11	74	26
12	74	26
13	74	26
14	73	27
15	73	27
16	73	27
17	73	27
18	73	27
19	72	28
20	72	28
21	71	29
22	71	29
23	71	29
24	70	30
25	70	30
26	69	31
27	68	32
28	68	32
29	67	33
30	67	33

Chance of precipitation in April

Any precipitation

San Martín gets around 20 mm of rain over 4.3 wet days in April. 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 18% on the wettest days. The odds ease 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
Rain chance (%)	18	18	18	18	18	18	17	17	16	16	15	15	14	14	14	13	13	13	13	12	12	11	11	11	10	10	10	9	9	9

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

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 84% 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
Dry (%)	68	70	70	71	72	74	75	76	77	78	81	82	83	84	85	86	88	89	90	91	91	92	93	94	94	94	94	94	94	94
Comfortable (%)	27	26	26	25	24	23	22	21	20	19	17	16	15	14	13	12	11	10	9	8	8	7	7	6	6	6	6	6	6	6
Humid (%)	5	4	4	4	4	3	3	3	3	3	2	2	2	2	2	2	1	1	1	1	1	1	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)	Humid (%)
1	68	27	5
2	70	26	4
3	70	26	4
4	71	25	4
5	72	24	4
6	74	23	3
7	75	22	3
8	76	21	3
9	77	20	3
10	78	19	3
11	81	17	2
12	82	16	2
13	83	15	2
14	84	14	2
15	85	13	2
16	86	12	2
17	88	11	1
18	89	10	1
19	90	9	1
20	91	8	1
21	91	8	1
22	92	7	1
23	93	7	0
24	94	6	0
25	94	6	0
26	94	6	0
27	94	6	0
28	94	6	0
29	94	6	0
30	94	6	0

Wind in April

Winds average 10 km/h in April.

Across April, daily wind ranges from about 9 km/h on the calmest days to 10 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
Wind speed (km/h)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	9	9	9	9	9	9	9	9	9	9	9	9	9
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

	Wind speed (km/h)	Feels
1	10	calm
2	10	calm
3	10	calm
4	10	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	9	calm
19	9	calm
20	9	calm
21	9	calm
22	9	calm
23	9	calm
24	9	calm
25	9	calm
26	9	calm
27	9	calm
28	9	calm
29	9	calm
30	9	calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 11 h 42 min at the start of April to 10 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 60 minutes over April. Sunrise moves from 7:48 AM to 8:09 AM, and sunset from 7:29 PM to 6:53 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
Daylight (h)	11.7	11.7	11.6	11.6	11.6	11.5	11.5	11.5	11.4	11.4	11.3	11.3	11.3	11.2	11.2	11.2	11.1	11.1	11.1	11.1	11.0	11.0	11.0	10.9	10.9	10.9	10.8	10.8	10.8	10.7
Sunrise (AM)	7:48	7:48	7:49	7:50	7:51	7:51	7:52	7:53	7:54	7:54	7:55	7:56	7:56	7:57	7:58	7:59	7:59	8:00	8:01	8:02	8:02	8:03	8:04	8:05	8:05	8:06	8:07	8:08	8:08	8:09
Sunset (PM)	7:29	7:28	7:27	7:25	7:24	7:23	7:21	7:20	7:19	7:17	7:16	7:15	7:13	7:12	7:11	7:10	7:08	7:07	7:06	7:05	7:03	7:02	7:01	7:00	6:59	6:58	6:57	6:55	6:54	6:53

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.7	7:48	7:29
2	11.7	7:48	7:28
3	11.6	7:49	7:27
4	11.6	7:50	7:25
5	11.6	7:51	7:24
6	11.5	7:51	7:23
7	11.5	7:52	7:21
8	11.5	7:53	7:20
9	11.4	7:54	7:19
10	11.4	7:54	7:17
11	11.3	7:55	7:16
12	11.3	7:56	7:15
13	11.3	7:56	7:13
14	11.2	7:57	7:12
15	11.2	7:58	7:11
16	11.2	7:59	7:10
17	11.1	7:59	7:08
18	11.1	8:00	7:07
19	11.1	8:01	7:06
20	11.1	8:02	7:05
21	11.0	8:02	7:03
22	11.0	8:03	7:02
23	11.0	8:04	7:01
24	10.9	8:05	7:00
25	10.9	8:05	6:59
26	10.9	8:06	6:58
27	10.8	8:07	6:57
28	10.8	8:08	6:55
29	10.8	8:08	6:54
30	10.7	8:09	6:53

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.03 kWh/m².

For context, solar energy here swings from a low near 2.86 kWh/m² to a high of 7.86 kWh/m² in December across the year — April's 4.03 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
Solar energy (kWh/m²)	4.5	4.5	4.4	4.4	4.4	4.3	4.3	4.3	4.3	4.2	4.2	4.2	4.2	4.1	4.1	4.1	4.0	4.0	4.0	3.9	3.9	3.9	3.8	3.8	3.8	3.7	3.7	3.6	3.6	3.6
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	4.5	Bright
2	4.5	Bright
3	4.4	Bright
4	4.4	Bright
5	4.4	Bright
6	4.3	Bright
7	4.3	Bright
8	4.3	Bright
9	4.3	Bright
10	4.2	Bright
11	4.2	Bright
12	4.2	Bright
13	4.2	Bright
14	4.1	Bright
15	4.1	Bright
16	4.1	Bright
17	4.0	Bright
18	4.0	Bright
19	4.0	Moderate
20	3.9	Moderate
21	3.9	Moderate
22	3.9	Moderate
23	3.8	Moderate
24	3.8	Moderate
25	3.8	Moderate
26	3.7	Moderate
27	3.7	Moderate
28	3.6	Moderate
29	3.6	Moderate
30	3.6	Moderate

Planning a trip in April

Is April a good time to visit San Martín?

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

8.2

Sightseeing

2nd-best month of the year

6.3

Beach & pool

7th-best month of the year

April is one of the better times to visit San Martín for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for San Martín in April

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

In April, San Martín sees daytime highs around 23°C and nights near 12°C. Worth packing: light clothes. About 4 days see rain.

light clothes

UV index in San Martín in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Martín peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

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

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	14	13	10	6	4	3	3	4	6	10	12	13
Level	Extreme	Extreme	Extreme	High	Moderate	Moderate	Moderate	Moderate	High	Very high	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	13	Extreme
Mar	10	Extreme
Apr	6	High
May	4	Moderate
Jun	3	Moderate
Jul	3	Moderate
Aug	4	Moderate
Sep	6	High
Oct	10	Very high
Nov	12	Extreme
Dec	13	Extreme

Location & terrain

Where is San Martín?

San Martín sits at 33.1°S, 68.5°W, 656 m above sea level, in Argentina. The nearest listed city is Rivadavia, 12 km away.

Topography around San Martín

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

Within 3 km, the terrain around San Martín has only modest variations in elevation — a maximum elevation change of 18 m around an average of 658 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,924 m.

The land around San Martín is covered by artificial surfaces (44%) within 3 km, cropland (38%), shrubs (25%) and grassland (25%) within 16 km, and shrubs (69%) within 80 km.

3 km

18 m

artificial surfaces 44%

16 km

67 m

cropland 38%

80 km

2,924 m

shrubs 69%

treesshrubsgrasslandcroplandartificial surfacesbare terrain

← March San Martín year-round climate May →Best places to visit in April

April weather nearby: Rivadavia 12 km · Rodeo del Medio 22 km · Perdriel 39 km · Mendoza 41 km · Tupungato 70 km · Tunuyán 75 km · Pocito 156 km · Caucete 160 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 San Martín (-33.0834°, -68.4731°, elevation 656 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	25	14
2	25	14
3	25	14
4	25	14
5	25	14
6	25	14
7	24	13
8	24	13
9	24	13
10	24	13
11	24	13
12	24	13
13	24	12
14	24	12
15	23	12
16	23	12
17	23	12
18	23	12
19	23	12
20	23	11
21	23	11
22	22	11
23	22	11
24	22	11
25	22	11
26	22	11
27	22	10
28	21	10
29	21	10
30	21	10

	Clearer (%)	Cloudier (%)
1	73	27
2	74	26
3	74	26
4	74	26
5	74	26
6	74	26
7	74	26
8	74	26
9	74	26
10	74	26
11	74	26
12	74	26
13	74	26
14	73	27
15	73	27
16	73	27
17	73	27
18	73	27
19	72	28
20	72	28
21	71	29
22	71	29
23	71	29
24	70	30
25	70	30
26	69	31
27	68	32
28	68	32
29	67	33
30	67	33

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

	Dry (%)	Comfortable (%)	Humid (%)
1	68	27	5
2	70	26	4
3	70	26	4
4	71	25	4
5	72	24	4
6	74	23	3
7	75	22	3
8	76	21	3
9	77	20	3
10	78	19	3
11	81	17	2
12	82	16	2
13	83	15	2
14	84	14	2
15	85	13	2
16	86	12	2
17	88	11	1
18	89	10	1
19	90	9	1
20	91	8	1
21	91	8	1
22	92	7	1
23	93	7	0
24	94	6	0
25	94	6	0
26	94	6	0
27	94	6	0
28	94	6	0
29	94	6	0
30	94	6	0

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

	Clearer (%)	Cloudier (%)
1	73	27
2	74	26
3	74	26
4	74	26
5	74	26
6	74	26
7	74	26
8	74	26
9	74	26
10	74	26
11	74	26
12	74	26
13	74	26
14	73	27
15	73	27
16	73	27
17	73	27
18	73	27
19	72	28
20	72	28
21	71	29
22	71	29
23	71	29
24	70	30
25	70	30
26	69	31
27	68	32
28	68	32
29	67	33
30	67	33

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

	Dry (%)	Comfortable (%)	Humid (%)
1	68	27	5
2	70	26	4
3	70	26	4
4	71	25	4
5	72	24	4
6	74	23	3
7	75	22	3
8	76	21	3
9	77	20	3
10	78	19	3
11	81	17	2
12	82	16	2
13	83	15	2
14	84	14	2
15	85	13	2
16	86	12	2
17	88	11	1
18	89	10	1
19	90	9	1
20	91	8	1
21	91	8	1
22	92	7	1
23	93	7	0
24	94	6	0
25	94	6	0
26	94	6	0
27	94	6	0
28	94	6	0
29	94	6	0
30	94	6	0

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

	Clearer (%)	Cloudier (%)
1	73	27
2	74	26
3	74	26
4	74	26
5	74	26
6	74	26
7	74	26
8	74	26
9	74	26
10	74	26
11	74	26
12	74	26
13	74	26
14	73	27
15	73	27
16	73	27
17	73	27
18	73	27
19	72	28
20	72	28
21	71	29
22	71	29
23	71	29
24	70	30
25	70	30
26	69	31
27	68	32
28	68	32
29	67	33
30	67	33

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

	Dry (%)	Comfortable (%)	Humid (%)
1	68	27	5
2	70	26	4
3	70	26	4
4	71	25	4
5	72	24	4
6	74	23	3
7	75	22	3
8	76	21	3
9	77	20	3
10	78	19	3
11	81	17	2
12	82	16	2
13	83	15	2
14	84	14	2
15	85	13	2
16	86	12	2
17	88	11	1
18	89	10	1
19	90	9	1
20	91	8	1
21	91	8	1
22	92	7	1
23	93	7	0
24	94	6	0
25	94	6	0
26	94	6	0
27	94	6	0
28	94	6	0
29	94	6	0
30	94	6	0