Temperature
Cold by day, freezing at night.
45°Ftypical September high
Typical range
September climate
September in El Chalten
Argentina · South America
Not the best time: Cold conditions during longer outdoor plans and some snow or mixed precipitation are the main limitations.
Not an ideal month
Mid to late
Daytime high
45°F
Lows around 33°F
Precipitation
19 days/mo
Sun
8 h/day
Air feel
Very dry
When to visit
Month-by-month fit
Best
Precipitation
Some snow or mixed precipitation is possible this month.
63%wet-day frequency
Precip amountWet-day chanceSnowfall
Sunshine
Wintry precipitation and cloud limit sunshine.
7.9 hSeptember sunshine
Heat & humidity by month
Humidity is rarely noticeable in the cool air.
Very drySeptember Heat feel
Hourly temperature pattern
In September, afternoons feel about 38° and nights feel near 29°.
FreezingVery coldColdNight hours
Clear sky
Mostly cloudy skies this month.
24%September Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in September.
4 mphSeptember Calm
More detailIncludes daypart comfort
Typical September day
September late afternoons are around 44°F, easing to about 39°F in early evening.
Avg temp Typical range
Morning37°F
Rain44%
Cloud77%
Humid airLow
Sun intensityMinimal
Midday43°F
Rain43%
Cloud72%
Humid airLow
Sun intensityModerate
Best windowLate afternoon43°F
Rain44%
Cloud73%
Humid airLow
Sun intensityModerate
Early evening39°F
Rain45%
Cloud74%
Humid airLow
Sun intensityMinimal
Data tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 55 | 43 | 9.9 | 23 | 11.6 | 78 |
| Feb | 57 | 44 | 8.1 | 18 | 10.6 | 78 |
| Mar | 53 | 41 | 10.3 | 21 | 8.6 | 81 |
| Apr | 49 | 37 | 10.5 | 20 | 6.7 | 83 |
| May | 43 | 33 | 9.8 | 20 | 5.1 | 84 |
| Jun | 39 | 30 | 8.6 | 20 | 4.6 | 84 |
| Jul | 38 | 29 | 9.1 | 20 | 4.9 | 82 |
| Aug | 41 | 31 | 8.5 | 20 | 6.3 | 81 |
| Sep | 45 | 33 | 7.3 | 19 | 7.9 | 80 |
| Oct | 47 | 36 | 9.5 | 21 | 9.8 | 79 |
| Nov | 49 | 38 | 9.1 | 21 | 11.3 | 79 |
| Dec | 52 | 41 | 10.0 | 22 | 11.7 | 79 |
Similar climates
Similar
Similar travel styleBarilocheArgentinaSimilar travel stylePuconChileSimilar travel styleAnchorageUnited StatesSimilar travel styleHunza ValleyPakistan
Want a side-by-side climate view? Compare El Chalten with Bariloche.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology