Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 4.7 °C | — | 18 days | Unfavourable season |
| February | 7.4 °C | — | 13 days | Unfavourable season |
| March | 9.9 °C | — | 16 days | Unfavourable season |
| April | 13.7 °C | — | 16 days | Possible, with trade-offs |
| May | 17.9 °C | — | 21 days | Unfavourable season |
| June | 23.2 °C | — | 20 days | Unfavourable season |
| July | 24.4 °C | — | 19 days | Unfavourable season |
| August | 24.6 °C | — | 18 days | Possible, with trade-offs |
| September | 20.1 °C | — | 16 days | Possible, with trade-offs |
| October | 16.9 °C | — | 14 days | Possible, with trade-offs |
| November | 10.6 °C | — | 13 days | Unfavourable season |
| December | 6.8 °C | — | 16 days | Unfavourable season |
Before you go
Three things to check once you have picked your dates.
Entry
Austria is in the European Union. Entry rules depend on your nationality — check before booking.
Safety
No specific restrictions
Usual precautions apply.
Official advice updated 11 August 2026
Health
Recommended vaccinations, water quality, mosquitoes: advice depends on the country and the season. Some vaccines need time before departure.
Beau Fixe is not a safety or health authority. These notes summarise public advisories and link to their source; only the competent authorities are authoritative. Alert levels: Foreign, Commonwealth & Development Office (gov.uk), Open Government Licence v3.0.
FAQ
Can you swim in Hallstatt in September?
Hallstatt is not a seaside destination (no sea data).
How hot is Hallstatt in September?
Expect 20.1°C in the afternoon and 11.2°C at night, averaged over the last 10 years.
Does it rain a lot in Hallstatt in September?
Around 16 days with rain (≥ 1 mm) in the month — 52% of days.