Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 14.7 °C | — | 16 days | Possible, with trade-offs |
| February | 15.4 °C | — | 14 days | Possible, with trade-offs |
| March | 12.7 °C | — | 18 days | Possible, with trade-offs |
| April | 9.6 °C | — | 17 days | Unfavourable season |
| May | 6.6 °C | — | 14 days | Unfavourable season |
| June | 3.4 °C | — | 16 days | Unfavourable season |
| July | 2.9 °C | — | 17 days | Unfavourable season |
| August | 4.2 °C | — | 18 days | Unfavourable season |
| September | 6 °C | — | 15 days | Unfavourable season |
| October | 9.1 °C | — | 16 days | Unfavourable season |
| November | 11.7 °C | — | 15 days | Unfavourable season |
| December | 13.8 °C | — | 17 days | Possible, with trade-offs |
Nearby in September
Before you go
Three things to check once you have picked your dates.
Entry
No visa needed for stays of up to 90 days. Passport valid until your return date. Passports are no longer stamped on entry; contact the Argentine Migration Office if you need proof of entry or exit.
For a British passport, per the UK Foreign Office on 7 May 2026. Rules change: check before booking.
Safety
No specific restrictions
Usual precautions apply.
Official advice updated 7 May 2026
Health
Vaccines · hepatitis A and hepatitis B if you are not already vaccinated. Routine vaccines up to date (measles in particular).
Yellow fever · Vaccine recommended for the whole country. No entry requirement.
Malaria · None.
Mosquitoes · dengue and Zika reported: protect yourself from bites.
Per the CDC (page reviewed 3 September 2026); see a travel clinic a few weeks before departure.
Beau Fixe is not a safety or health authority. These notes summarise dated public texts and link to their source: France Diplomatie (Licence Ouverte 2.0), Foreign, Commonwealth & Development Office (gov.uk, Open Government Licence v3.0), Centers for Disease Control and Prevention (Source: CDC). Only the competent authorities are authoritative.
FAQ
Can you swim in El Chaltén in September?
El Chaltén is not a seaside destination (no sea data).
How hot is El Chaltén in September?
Expect 6°C in the afternoon and -1.1°C at night, averaged over the last 10 years.
Does it rain a lot in El Chaltén in September?
Around 15 days with rain (≥ 1 mm) in the month — 52% of days.