Puerto Deseado weather in September

In September, Puerto Deseado sees average daytime highs of 13°C and overnight lows near 5°C, with 16 mm of precipitation across 4.1 wet days and about 11.6 hours of daylight. It is the 8th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 12°C in the first days to 14°C by the end. The sky is clear or mostly clear about 38% of the time in September, and the air most often feels dry.

Daylight stretches from about 10 h 48 min at the start of September to 12 h 30 min by month's end. Set against the rest of the year, September is Puerto Deseado's 10th-clearest and 6th-windiest month. For the whole year in context, see Puerto Deseado's year-round climate.

Daytime high
13°
8th warmest
Overnight low
4th coldest
Precipitation
16 mm
4.1 wet days
Daylight
11 h 42 min
7:28 AM – 7:08 PM
Cloud cover
53%
10th clearest
Wind
21 km/h
6th windiest
Solar energy
3.75 kWh/m²
Travel score
4.2
out of 10

Puerto Deseado is human settlement.

Density
3,563/km²
people per km²
Founded
1884

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 12°C in the first days to 14°C by the end.

A typical September day in Puerto Deseado reaches about 13°C in the afternoon and slips back to 5°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 18°C. Set against its neighbours, September runs about 3°C warmer than August and about 3°C cooler than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
1124
2124
3124
4124
5124
6124
7124
8124
9124
10124
11134
12134
13134
14134
15135
16135
17135
18135
19135
20145
21145
22145
23145
24145
25145
26145
27145
28146
29146
30156

How September really feels in Puerto Deseado

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 11 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
11
wind chill below the day's low

The story in September is cold — wind chill drags the overnight "feels like" below the raw low.

Puerto Deseado weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 12°163.715.37.9
Feb22° / 12°174.114.17.6
Mar20° / 11°203.912.47.3
Apr16° / 133.510.66.0
May12° / 153.59.13.7
Jun / 214.78.31.8
Jul / 153.78.61.7
Aug10° / 1649.92.9
Sep13° / 164.111.64.2
Oct16° / 164.313.46.0
Nov19° / 184.414.97.0
Dec21° / 11°225.315.77.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25545
35545
45545
55545
65545
75644
85644
95644
105644
115644
125644
135644
145644
155743
165743
175842
185743
195743
205842
215842
225743
235644
245644
255644
265644
275545
285545
295644
305644

Chance of precipitation in September

Any precipitation

Puerto Deseado gets around 16 mm of rain and snow over 4.1 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 14% and peaks near 15% on the wettest days, and about 0 day brings snow.

0%10%20%30%151015202530
Rain chance (%)
115
215
315
415
515
615
715
814
914
1014
1113
1213
1313
1412
1512
1612
1712
1812
1912
2012
2112
2212
2313
2413
2514
2614
2714
2815
2915
3015

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100

Wind in September

Winds average 21 km/h in September.

Across September, daily wind ranges from about 20 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
120light breeze
220light breeze
320breezy
420breezy
520breezy
620breezy
720breezy
820breezy
920breezy
1020breezy
1121breezy
1221breezy
1321breezy
1421breezy
1521breezy
1621breezy
1721breezy
1821breezy
1921breezy
2021breezy
2121breezy
2221breezy
2321breezy
2421breezy
2521breezy
2621breezy
2721breezy
2821breezy
2921breezy
3021breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 10 h 48 min at the start of September to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 102 minutes over September. Sunrise moves from 8:00 AM to 6:58 AM, and sunset from 6:47 PM to 7:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
110.88:006:47
210.87:586:48
310.97:566:50
411.07:546:51
511.07:516:52
611.17:496:54
711.17:476:55
811.27:456:57
911.27:436:58
1011.37:416:59
1111.47:397:01
1211.47:377:02
1311.57:357:04
1411.57:327:05
1511.67:307:06
1611.77:287:08
1711.77:267:09
1811.87:247:11
1911.87:227:12
2011.97:207:13
2112.07:177:15
2212.07:157:16
2312.17:137:18
2412.17:117:19
2512.27:097:20
2612.37:077:22
2712.37:057:23
2812.47:027:25
2912.47:007:26
3012.56:587:28

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.75 kWh/m².

For context, solar energy here swings from a low near 1.19 kWh/m² to a high of 7.74 kWh/m² in December across the year — September's 3.75 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
13.0Moderate
23.0Moderate
33.1Moderate
43.1Moderate
53.2Moderate
63.2Moderate
73.3Moderate
83.3Moderate
93.4Moderate
103.4Moderate
113.5Moderate
123.5Moderate
133.6Moderate
143.7Moderate
153.7Moderate
163.8Moderate
173.8Moderate
183.9Moderate
194.0Moderate
204.0Bright
214.1Bright
224.1Bright
234.2Bright
244.2Bright
254.3Bright
264.3Bright
274.4Bright
284.5Bright
294.5Bright
304.6Bright
Planning a trip in September

Is September a good time to visit Puerto Deseado?

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

4.2
Sightseeing
8th-best month of the year
0.0
Beach & pool
8th-best month of the year

September is a reasonable time to visit Puerto Deseado for sightseeing.

What to pack for Puerto Deseado in September

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

In September, Puerto Deseado sees daytime highs around 13°C and nights near 5°C. Worth packing: a warm layer and a windbreaker. About 4 days see rain.

a warm layera windbreaker

Sea temperature near Puerto Deseado in September

The nearest coast averages about 6°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 14 km away) is warmest in February at about 13°C and coldest in August near 6°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracing
Sea temperature (°C)Comfort
Jan12Bracing
Feb13Bracing
Mar13Bracing
Apr11Bracing
May10Bracing
Jun8Bracing
Jul7Bracing
Aug6Bracing
Sep6Bracing
Oct7Bracing
Nov9Bracing
Dec11Bracing

UV index in Puerto Deseado in September

LowModerateHighVery highExtreme

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

Under clear skies, the midday UV index in Puerto Deseado peaks around December 24 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highModerateLowModerateHighVery highDec 24UV 10Jun 20UV 1
UV index (midday)Level
Jan10Extreme
Feb9Very high
Mar5High
Apr3Moderate
May2Low
Jun1Low
Jul1Low
Aug2Low
Sep3Moderate
Oct6High
Nov7Very high
Dec10Extreme
Location & terrain

Where is Puerto Deseado?

Puerto Deseado sits at 47.8°S, 65.9°W, 26 m above sea level, in Argentina. The nearest listed city is Pico Truncado, 188 km away.

Pico TruncadoComodoro RivadaviaLas HerasRío GallegosRawsonTrelewCoyhaique

Topography around Puerto Deseado

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

Within 3 km, the terrain around Puerto Deseado has only modest variations in elevation — a maximum elevation change of 82 m around an average of 27 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 147 m; within 80 km, significant variations in elevation — a maximum elevation change of 260 m.

The land around Puerto Deseado is covered by grassland (54%) and water (30%) within 3 km, grassland (54%) and water (39%) within 16 km, and grassland (60%) and water (35%) within 80 km.

3 km
82 m
16 km
147 m
80 km
260 m
shrubsgrasslandartificial surfacesbare terrainwater
September weather nearby: Pico Truncado 188 km · Caleta Olivia 190 km · Comodoro Rivadavia 243 km · Las Heras 266 km · Río Gallegos 494 km · Rawson 499 km · Trelew 503 km · Coyhaique 529 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 Puerto Deseado (-47.7513°, -65.8967°, elevation 26 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).