El Chaltén monthly weather forecast

Monthly weather forecast for El Chaltén. ℃ Average temperatures % Humidity, precipitation ️ Sunrise and sunset ️ Wind direction and speed

31 August 2026, Monday
--2°C / +4°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
-1
10.5
79%
951
01:00
-1
11.4
77%
950
02:00
-2
10.7
74%
950
03:00
-1
9.7
72%
951
04:00
-1
8.3
71%
951
05:00
-1
9.1
72%
951
06:00
-1
11.2
72%
952
07:00
-1
11.6
71%
952
08:00
-1
10.6
71%
952
09:00
-1
11.4
70%
952
10:00
+1°C
11.5
67%
953
11:00
+2°C
11.3
64%
954
12:00
+3°C
10.3
63%
954
13:00
+4°C
9.4
61%
954
14:00
+4°C
9.2
58%
954
15:00
+4°C
9.2
57%
954
16:00
+4°C
9.2
58%
954
17:00
+4°C
8.8
60%
955
18:00
+3°C
8.3
62%
955
19:00
+2°C
8.9
65%
955
20:00
0
8.3
68%
956
21:00
0
9
67%
957
22:00
-0
9.4
67%
957
23:00
-0
9.5
68%
958
01 September 2026, Tuesday
--6°C / +4°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
-1
9.4
70%
959
01:00
-2
9.7
71%
959
02:00
-2
9.4
71%
959
03:00
-2
9.4
72%
960
04:00
-2
9.5
72%
960
05:00
-2
10.3
72%
960
06:00
-2
9.4
71%
960
07:00
-2
9.8
70%
960
08:00
-2
9.6
70%
961
09:00
-3
9.7
70%
961
10:00
-1
10.8
68%
962
11:00
+1°C
9.2
65%
962
12:00
+3°C
8.1
63%
962
13:00
+3°C
7.1
58%
962
14:00
+4°C
6.6
57%
962
15:00
+4°C
4.7
58%
961
16:00
+3°C
3.7
60%
961
17:00
+3°C
3.1
61%
961
18:00
+2°C
2.4
59%
961
19:00
-0
2.6
63%
960
20:00
-2
4
67%
960
21:00
-3
7.1
72%
960
22:00
-5
8.4
79%
960
23:00
-6
10.1
82%
959
02 September 2026, Wednesday
--7°C / +4°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
-7
10.4
79%
959
01:00
-7
11.3
74%
958
02:00
-6
11
70%
957
03:00
-7
10.7
67%
957
04:00
-6
10.9
66%
957
05:00
-7
11
64%
956
06:00
-6
11
61%
956
07:00
-7
10.3
59%
956
08:00
-7
9.4
58%
956
09:00
-7
8.3
58%
956
10:00
-4
7.1
58%
958
11:00
-1
5.8
56%
959
12:00
+2°C
7.3
54%
959
13:00
+3°C
9
55%
959
14:00
+4°C
12.5
54%
959
15:00
+3°C
13.2
55%
959
16:00
+4°C
11.8
57%
958
17:00
+4°C
13
57%
958
18:00
+3°C
13.6
61%
959
19:00
+3°C
12.5
64%
958
20:00
+2°C
11.6
68%
959
21:00
+2°C
13.1
74%
959
22:00
+3°C
14.3
73%
959
23:00
+2°C
10.4
73%
960
03 September 2026, Thursday
-0°C / +5°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+2°C
11
72%
961
01:00
+1°C
12.2
73%
960
02:00
0
9.8
73%
960
03:00
-0
8.8
74%
961
04:00
0
10.2
75%
962
05:00
+1°C
11.3
72%
963
06:00
+1°C
10.6
69%
963
07:00
+1°C
10
69%
964
08:00
+1°C
10.9
69%
965
09:00
+1°C
10.6
69%
965
10:00
+2°C
11.2
68%
966
11:00
+4°C
12.4
64%
966
12:00
+5°C
14.8
62%
966
13:00
+4°C
14.1
64%
965
14:00
+5°C
13
65%
965
15:00
+5°C
11.4
65%
965
16:00
+5°C
11.1
64%
965
17:00
+5°C
11.3
62%
965
18:00
+5°C
11.6
62%
966
19:00
+4°C
11.7
63%
966
20:00
+4°C
11.9
66%
967
21:00
+3°C
12.1
68%
967
22:00
+3°C
11.9
69%
967
23:00
+3°C
11.7
70%
967
04 September 2026, Friday
0°C / +8°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+4°C
11.5
70%
967
01:00
+4°C
11.8
70%
968
02:00
+4°C
12
69%
968
03:00
+4°C
12.1
68%
969
04:00
+4°C
11.7
68%
970
05:00
+4°C
11
70%
970
06:00
+3°C
10.4
71%
971
07:00
+3°C
10.4
72%
971
08:00
+3°C
10.5
73%
972
09:00
+3°C
10.3
73%
973
10:00
+4°C
9.8
72%
974
11:00
+5°C
8.9
71%
975
12:00
+6°C
7.4
69%
976
13:00
+7°C
5.2
65%
977
14:00
+7°C
2.5
61%
977
15:00
+8°C
0.6
59%
977
16:00
+8°C
1.2
60%
978
17:00
+7°C
1.5
63%
979
18:00
+6°C
1.5
66%
979
19:00
+5°C
0.6
69%
979
20:00
+4°C
0.7
71%
980
21:00
+2°C
2.2
74%
980
22:00
+1°C
3.5
76%
980
23:00
0
4.7
78%
980
05 September 2026, Saturday
--3°C / +5°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
-1
5.4
78%
980
01:00
-1
5.4
77%
980
02:00
-2
4.8
75%
980
03:00
-2
4.5
74%
980
04:00
-2
4.5
73%
980
05:00
-2
4.6
73%
979
06:00
-3
4.6
73%
979
07:00
-3
4.6
73%
979
08:00
-3
4.6
74%
979
09:00
-2
4.1
74%
980
10:00
-0
2.6
71%
980
11:00
+3°C
0.4
68%
980
12:00
+5°C
1.3
66%
980
13:00
+5°C
2.2
67%
980
14:00
+5°C
2.9
70%
979
15:00
+5°C
3.1
71%
978
16:00
+5°C
2.9
71%
978
17:00
+5°C
2.3
70%
978
18:00
+5°C
1.6
69%
977
19:00
+3°C
0.9
71%
977
20:00
+3°C
0
71%
976
21:00
+2°C
0.5
71%
976
22:00
+1°C
0.9
72%
975
23:00
0
1.3
73%
975
06 September 2026, Sunday
--4°C / +3°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
-1
1.5
73%
974
01:00
-2
1.6
74%
973
02:00
-2
1.7
75%
973
03:00
-3
1.8
75%
972
04:00
-3
2
75%
972
05:00
-4
2.2
74%
972
06:00
-4
2.2
73%
972
07:00
-4
2.2
71%
971
08:00
-4
2.2
70%
971
09:00
-4
1.8
69%
971
10:00
-3
1.1
69%
971
11:00
-2
0.2
68%
971
12:00
-0
1.1
68%
970
13:00
+1°C
2.2
68%
970
14:00
+3°C
3.1
68%
970
15:00
+3°C
3.5
69%
970
16:00
+3°C
3.3
71%
969
17:00
+3°C
2.8
74%
969
18:00
+2°C
2.1
77%
969
19:00
+1°C
1.1
81%
968
20:00
-0
0.3
83%
967
21:00
-1
0.5
84%
967
22:00
-2
1.3
83%
966
23:00
-3
2
81%
966
07 September 2026, Monday
--7°C / +4°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
-4
2.7
77%
965
01:00
-5
3.3
74%
965
02:00
-6
3.8
70%
964
03:00
-6
4.2
68%
964
04:00
-7
4.4
67%
963
05:00
-7
4.5
66%
963
06:00
-7
4.5
65%
963
07:00
-7
4.4
65%
962
08:00
-6
4.2
65%
962
09:00
-6
3.6
65%
962
10:00
-4
2.7
65%
962
11:00
-3
1.4
65%
962
12:00
-1
0.4
66%
962
13:00
+1°C
1.4
66%
962
14:00
+3°C
2.5
67%
961
15:00
+4°C
3
67%
961
16:00
+4°C
3
67%
961
17:00
+4°C
2.4
68%
961
18:00
+3°C
1.5
68%
960
19:00
+2°C
0.6
68%
960
20:00
+1°C
0.5
68%
960
21:00
+1°C
1.7
68%
959
22:00
0
2.8
69%
959
23:00
0
4.2
69%
959
08 September 2026, Tuesday
--1°C / +6°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
-0
5.7
70%
958
01:00
-1
7.2
70%
958
02:00
-1
8.3
71%
958
03:00
-1
9.2
71%
958
04:00
-0
9.7
72%
958
05:00
0
10
73%
958
06:00
+1°C
9.9
74%
958
07:00
+2°C
9.8
75%
958
08:00
+3°C
10
75%
958
09:00
+3°C
9.9
75%
958
10:00
+4°C
10.1
73%
957
11:00
+4°C
10.3
71%
957
12:00
+5°C
10.3
68%
957
13:00
+5°C
10.5
65%
956
14:00
+6°C
10.4
63%
956
15:00
+6°C
10.4
62%
956
16:00
+6°C
10.3
62%
956
17:00
+6°C
10.1
64%
955
18:00
+5°C
9.8
66%
955
19:00
+5°C
9.5
69%
955
20:00
+5°C
9.3
71%
954
21:00
+4°C
9.2
72%
954
22:00
+4°C
9.1
72%
954
23:00
+4°C
8.9
71%
954
09 September 2026, Wednesday
-0°C / +5°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+3°C
8.5
69%
954
01:00
+3°C
8.5
67%
954
02:00
+3°C
8.5
65%
954
03:00
+2°C
8.6
65%
954
04:00
+2°C
9
65%
954
05:00
+2°C
9.8
66%
954
06:00
+2°C
10.8
68%
955
07:00
+2°C
11.9
70%
955
08:00
+2°C
12.7
72%
955
09:00
+3°C
12.9
72%
955
10:00
+3°C
12.6
71%
956
11:00
+3°C
12
70%
956
12:00
+4°C
10.9
68%
957
13:00
+5°C
9.9
66%
957
14:00
+5°C
8.6
64%
957
15:00
+5°C
7.3
63%
958
16:00
+5°C
5.9
64%
959
17:00
+5°C
4.1
65%
960
18:00
+4°C
2.4
66%
960
19:00
+3°C
0.8
68%
961
20:00
+3°C
1
70%
962
21:00
+2°C
1.5
71%
963
22:00
+1°C
1.4
72%
963
23:00
-0
1
73%
964
10 September 2026, Thursday
--5°C / +4°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
-1
2.1
74%
965
01:00
-2
3.8
75%
965
02:00
-3
5.2
75%
966
03:00
-4
6.3
76%
966
04:00
-5
7.1
76%
967
05:00
-5
7.8
77%
968
06:00
-5
8.4
78%
968
07:00
-5
8.8
78%
969
08:00
-5
8.8
77%
969
09:00
-4
8.6
76%
970
10:00
-3
8
74%
970
11:00
-2
7.1
70%
971
12:00
0
5.8
66%
971
13:00
+2°C
4.8
63%
971
14:00
+3°C
4.1
60%
972
15:00
+4°C
3.7
59%
972
16:00
+3°C
3.9
60%
972
17:00
+3°C
4.1
61%
972
18:00
+1°C
4.7
64%
973
19:00
0
5.6
67%
973
20:00
-1
6.3
70%
973
21:00
-2
7.1
72%
973
22:00
-3
7.8
72%
973
23:00
-4
8.6
72%
973
11 September 2026, Friday
--7°C / +4°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
-5
9.3
72%
972
01:00
-5
10.1
71%
972
02:00
-6
10.5
70%
972
03:00
-6
10.9
69%
972
04:00
-7
11.1
68%
972
05:00
-7
11.1
68%
972
06:00
-7
10.8
67%
972
07:00
-7
10.5
66%
972
08:00
-7
9.9
65%
972
09:00
-7
9
64%
972
10:00
-5
7.5
63%
972
11:00
-4
5.2
62%
972
12:00
-2
3
61%
972
13:00
+1°C
0.6
60%
972
14:00
+2°C
1.3
60%
972
15:00
+4°C
2.6
60%
972
16:00
+4°C
3
60%
972
17:00
+4°C
2.8
61%
971
18:00
+4°C
2.1
63%
971
19:00
+3°C
1.3
65%
971
20:00
+3°C
0.6
67%
970
21:00
+2°C
0.2
69%
970
22:00
+2°C
0.2
71%
970
23:00
+2°C
0.2
74%
970
12 September 2026, Saturday
+1°C / +7°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+2°C
0.2
77%
969
01:00
+1°C
0.4
80%
969
02:00
+1°C
0.4
83%
969
03:00
+1°C
0.6
84%
969
04:00
+1°C
0.8
86%
968
05:00
+1°C
1
87%
968
06:00
+1°C
1.3
87%
968
07:00
+2°C
1.7
87%
967
08:00
+2°C
1.9
86%
967
09:00
+2°C
1.9
85%
967
10:00
+3°C
1.8
83%
966
11:00
+4°C
1.7
80%
966
12:00
+5°C
1.5
76%
966
13:00
+6°C
1.1
73%
965
14:00
+6°C
0.9
71%
965
15:00
+7°C
0.5
70%
965
16:00
+7°C
0
70%
964
17:00
+7°C
0.7
70%
964
18:00
+7°C
1.6
72%
964
19:00
+7°C
2.5
74%
964
20:00
+6°C
3.1
75%
964
21:00
+6°C
3.4
77%
964
22:00
+6°C
3.3
78%
964
23:00
+5°C
2.9
79%
964
13 September 2026, Sunday
+2°C / +5°C
Hour
Temperature
Wind (km/h)
Humidity
Weather
Pressure
00:00
+5°C
2.2
80%
963
01:00
+5°C
1.5
81%
963
02:00
+4°C
0.9
82%
963
03:00
+4°C
0.8
83%
962
04:00
+4°C
1.1
84%
962
05:00
+4°C
1.5
86%
962
06:00
+4°C
2
87%
961
07:00
+4°C
2.6
88%
961
08:00
+4°C
2.9
89%
960
09:00
+4°C
2.9
90%
960
10:00
+4°C
2.7
91%
959
11:00
+4°C
2.3
91%
959
12:00
+4°C
2
92%
958
13:00
+5°C
2.3
92%
958
14:00
+5°C
2.7
92%
958
15:00
+5°C
2.9
92%
957
16:00
+5°C
2.7
91%
957
17:00
+5°C
2
91%
956
18:00
+4°C
1.3
90%
956
19:00
+4°C
0.5
89%
956
20:00
+4°C
0.3
88%
955
21:00
+3°C
0.8
88%
955
22:00
+3°C
1
87%
954
23:00
+2°C
1.1
86%
953


Climate Characteristics of El Chaltén

General Overview

El Chaltén features a cool temperate climate. The weather here is considered one of the most unpredictable and wild in the world. Exposed to powerful westerly winds from the Pacific and the Southern Patagonian Ice Field, the town experiences extreme shifts within minutes.

Trekking Season and Summer (December to February)

Summer is the most popular season but far from warm. Daytime temperatures range between 14°C and 18°C (57-64°F), dropping to 5°C (41°F) at night. Wind is the dominant element: Gusts exceeding 100 km/h are common in summer and can make trekking challenging. Clear sunny days can turn into rain or snowstorms in no time.

Winter Season (June to August)

Winter in El Chaltén is very cold, quiet, and snowy. Daytime temperatures range from 1°C to 4°C (34-39°F), while nighttime lows are consistently below 0°C (32°F). Most trails close or become hazardous due to snow and ice accumulation. Daylight hours are very short, and many local businesses close during this period.

Transition Seasons (March-May and September-November)

Autumn (April-May) is considered by many the most beautiful time, as winds calm and vegetation turns deep red and orange. Spring (October-November) features snowmelt and lengthening days, but it is also when the strongest winds begin to blow.

 

Weather in El Chaltén by Month

January

Peak trekking season. 18°C (64°F) daytime. Very long days allowing for extended hikes, but winds are very strong.

February

Similar to January (17°C/63°F daytime). Relatively comfortable weather and winds calm toward month's end.

March

Start of autumn. 15°C (59°F) daytime. Fall colors begin to appear and skies are often clearer.

April

The most beautiful month for photography. 11°C (52°F) daytime. Foliage at its peak, winds die down, and visibility is excellent.

May

Cold and wet (7°C/45°F daytime). First snow showers possible and days shorten significantly.

June

Start of winter. 4°C (39°F) daytime and freezing nights (-2°C/28°F). Mostly grey skies and snow is common.

July

The coldest month. 3°C (37°F) daytime and -3°C (27°F) at night. Minimal daylight hours and heavy snow on trails.

August

Still very cold (4°C/39°F daytime). Wintry weather but winds begin to strengthen.

September

Start of spring. 8°C (46°F) daytime. Unpredictable month with a mix of sun, rain, and snow.

October

Gradual warming (12°C/54°F daytime). Blooms begin but strong winds return.

November

Warmer spring (15°C/59°F daytime). Long days attracting the season's first hikers.

December

Start of summer. 17°C (63°F) daytime. Daylight hours at their peak (longest day of the year) and winds are very strong.

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El Chaltén