Mar del Plata weather in September

In September, Mar del Plata sees average daytime highs of 14°C and overnight lows near 8°C, with 60 mm of rain across 7.5 wet days and about 11.7 hours of daylight. It is the 9th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 14°C through the month. The sky is clear or mostly clear about 34% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 06 min at the start of September to 12 h 18 min by month's end. Set against the rest of the year, September is Mar del Plata's 8th-clearest and 4th-windiest month. For the whole year in context, see Mar del Plata's year-round climate.

Daytime high: 14°; 9th warmest
Overnight low: 8°; 4th coldest
Rainfall: 60 mm; 7.5 wet days
Daylight: 11 h 48 min; 6:52 AM – 6:37 PM
Cloud cover: 58%; 8th clearest
Wind: 20 km/h; 4th windiest
Solar energy: 4.28 kWh/m²
Travel score: 4.1; out of 10

Mar del Plata is city in Buenos Aires Province, Argentina.

Density: 7,465/km²; people per km²
Founded: 1874

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

← August Mar del Plata year-round climate October →Best places to visit in September

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 14°C through the month.

A typical September day in Mar del Plata reaches about 14°C in the afternoon and slips back to 8°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 17°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

	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)	13	13	13	13	13	13	13	13	13	13	13	13	13	13	13	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14
Avg low (°C)	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	8	9	9	9	9	9	9	9	9

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

Mar del Plata weather by month

How September compares with the rest of the year at a glance. September 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	23° / 17°	77	8.3	14.3	7.4
Feb	23° / 17°	76	7.5	13.5	7.3
Mar	21° / 16°	72	8.1	12.3	7.0
Apr	19° / 13°	77	8.6	11	6.3
May	15° / 11°	49	6.8	10	5.0
Jun	13° / 8°	60	6.9	9.4	3.7
Jul	11° / 7°	54	7	9.6	3.1
Aug	12° / 7°	60	7	10.5	3.6
Sep	14° / 8°	60	7.5	11.7	4.1
Oct	16° / 10°	80	9	13	5.1
Nov	19° / 13°	77	9.3	14.1	6.3
Dec	22° / 15°	69	8	14.6	7.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 52%.

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

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

Chance of precipitation in September

Any precipitation

Mar del Plata gets around 60 mm of rain over 7.5 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 25% and peaks near 29% 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
Rain chance (%)	24	24	24	24	24	24	24	24	24	24	24	24	24	24	24	23	23	23	23	24	24	25	26	26	27	27	28	28	29	29

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

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 98% 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 (%)	98	98	98	98	98	98	98	98	98	98	98	98	98	98	99	99	99	99	99	99	99	98	98	98	98	98	97	97	97	96
Comfortable (%)	2	2	2	2	2	2	2	2	2	2	2	2	2	2	1	1	1	1	1	1	1	2	2	2	2	2	3	3	3	4

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

Wind in September

Winds average 20 km/h in September.

Across September, daily wind ranges from about 20 km/h on the calmest days to 20 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)	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20
Feels	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy

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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 06 min at the start of September to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over September. Sunrise moves from 7:16 AM to 6:29 AM, and sunset from 6:24 PM to 6:50 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
Daylight (h)	11.1	11.2	11.2	11.3	11.3	11.3	11.4	11.4	11.5	11.5	11.5	11.6	11.6	11.7	11.7	11.8	11.8	11.8	11.9	11.9	12.0	12.0	12.1	12.1	12.1	12.2	12.2	12.3	12.3	12.3
Sunrise (AM)	7:16	7:14	7:13	7:11	7:10	7:08	7:06	7:05	7:03	7:02	7:00	6:58	6:57	6:55	6:53	6:52	6:50	6:49	6:47	6:45	6:44	6:42	6:40	6:39	6:37	6:36	6:34	6:32	6:31	6:29
Sunset (PM)	6:24	6:25	6:26	6:27	6:28	6:28	6:29	6:30	6:31	6:32	6:33	6:34	6:35	6:36	6:36	6:37	6:38	6:39	6:40	6:41	6:42	6:43	6:44	6:44	6:45	6:46	6:47	6:48	6:49	6:50

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.1	7:16	6:24
2	11.2	7:14	6:25
3	11.2	7:13	6:26
4	11.3	7:11	6:27
5	11.3	7:10	6:28
6	11.3	7:08	6:28
7	11.4	7:06	6:29
8	11.4	7:05	6:30
9	11.5	7:03	6:31
10	11.5	7:02	6:32
11	11.5	7:00	6:33
12	11.6	6:58	6:34
13	11.6	6:57	6:35
14	11.7	6:55	6:36
15	11.7	6:53	6:36
16	11.8	6:52	6:37
17	11.8	6:50	6:38
18	11.8	6:49	6:39
19	11.9	6:47	6:40
20	11.9	6:45	6:41
21	12.0	6:44	6:42
22	12.0	6:42	6:43
23	12.1	6:40	6:44
24	12.1	6:39	6:44
25	12.1	6:37	6:45
26	12.2	6:36	6:46
27	12.2	6:34	6:47
28	12.3	6:32	6:48
29	12.3	6:31	6:49
30	12.3	6:29	6:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.28 kWh/m².

For context, solar energy here swings from a low near 1.92 kWh/m² to a high of 7.61 kWh/m² in December across the year — September's 4.28 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)	3.6	3.6	3.7	3.7	3.8	3.8	3.9	3.9	4.0	4.0	4.1	4.1	4.2	4.2	4.3	4.3	4.4	4.4	4.5	4.5	4.5	4.6	4.6	4.7	4.7	4.7	4.8	4.8	4.8	4.9
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	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	3.6	Moderate
2	3.6	Moderate
3	3.7	Moderate
4	3.7	Moderate
5	3.8	Moderate
6	3.8	Moderate
7	3.9	Moderate
8	3.9	Moderate
9	4.0	Moderate
10	4.0	Bright
11	4.1	Bright
12	4.1	Bright
13	4.2	Bright
14	4.2	Bright
15	4.3	Bright
16	4.3	Bright
17	4.4	Bright
18	4.4	Bright
19	4.5	Bright
20	4.5	Bright
21	4.5	Bright
22	4.6	Bright
23	4.6	Bright
24	4.7	Bright
25	4.7	Bright
26	4.7	Bright
27	4.8	Bright
28	4.8	Bright
29	4.8	Bright
30	4.9	Bright

Planning a trip in September

Is September a good time to visit Mar del Plata?

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

4.1

Sightseeing

9th-best month of the year

0.0

Beach & pool

9th-best month of the year

September is a reasonable time to visit Mar del Plata for sightseeing.

What to pack for Mar del Plata in September

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

In September, Mar del Plata sees daytime highs around 14°C and nights near 8°C. Worth packing: a warm layer and a windbreaker. About 8 days see rain.

a warm layera windbreaker

Sea temperature near Mar del Plata in September

The nearest coast averages about 11°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 15 km away) is warmest in February at about 20°C and coldest in August near 10°C.

It's comfortable for a long swim from Jan 29 to Mar 10 — about 1.3 months when the water holds above 20°C.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°C)	20	20	20	18	15	13	11	10	11	13	15	17
Comfort	Cool	Refreshing	Cool	Cool	Cool	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Cool

	Sea temperature (°C)	Comfort
Jan	20	Cool
Feb	20	Refreshing
Mar	20	Cool
Apr	18	Cool
May	15	Cool
Jun	13	Bracing
Jul	11	Bracing
Aug	10	Bracing
Sep	11	Bracing
Oct	13	Bracing
Nov	15	Bracing
Dec	17	Cool

UV index in Mar del Plata in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

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

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	12	11	8	5	3	2	2	3	5	7	10	12
Level	Extreme	Extreme	Very high	High	Moderate	Low	Moderate	Moderate	Moderate	Very high	Extreme	Extreme

	UV index (midday)	Level
Jan	12	Extreme
Feb	11	Extreme
Mar	8	Very high
Apr	5	High
May	3	Moderate
Jun	2	Low
Jul	2	Moderate
Aug	3	Moderate
Sep	5	Moderate
Oct	7	Very high
Nov	10	Extreme
Dec	12	Extreme

Location & terrain

Where is Mar del Plata?

Mar del Plata sits at 38.0°S, 57.6°W, 14 m above sea level, in Argentina. The nearest listed city is Santa Clara del Mar, 19 km away.

Topography around Mar del Plata

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

Within 3 km, the terrain around Mar del Plata has only modest variations in elevation — a maximum elevation change of 51 m around an average of 17 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 125 m; within 80 km, significant variations in elevation — a maximum elevation change of 386 m.

The land around Mar del Plata is covered by artificial surfaces (70%) within 3 km, water (45%) and cropland (23%) within 16 km, and water (35%), cropland (31%) and grassland (30%) within 80 km.

3 km

51 m

artificial surfaces 70%

16 km

125 m

water 45%

80 km

386 m

water 35%

treesgrasslandcroplandartificial surfacesbare terrainwaterwetland

← August Mar del Plata year-round climate October →Best places to visit in September

September weather nearby: Santa Clara del Mar 19 km · Miramar 39 km · Balcarce 64 km · Villa Gesell 97 km · Pinamar 116 km · General Juan Madariaga 117 km · Necochea 120 km · Ayacucho 125 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 Mar del Plata (-38.0004°, -57.5562°, elevation 14 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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	13	8
2	13	8
3	13	8
4	13	8
5	13	8
6	13	8
7	13	8
8	13	8
9	13	8
10	13	8
11	13	8
12	13	8
13	13	8
14	13	8
15	13	8
16	14	8
17	14	8
18	14	8
19	14	8
20	14	8
21	14	8
22	14	8
23	14	9
24	14	9
25	14	9
26	14	9
27	14	9
28	14	9
29	14	9
30	14	9

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

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

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

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

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

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

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

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

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

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

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