The best time to visit Vienna is May, June and September, when average highs sit in the comfortable low-to-mid 20s and sunshine is generous — June reaches 25.8 °C with 12.6 hours of sun a day, while September settles at a mild 21.8 °C with just 9 rain days. July and August are Vienna's peak season, hot and busy with school holidays pushing up prices. Winter, from December through February, is the quiet low season — cold and short on daylight, but atmospheric around the Christmas markets.
Best months MayJuneSeptember
Vienna month by month
Average highs and lows (°C), 2016–2025. Highlighted bars are the best months.
| Month | High | Low | Rain days | Sun / day |
|---|---|---|---|---|
| January | 4.1 °C | -1.6 °C | 9 | 4.5 h |
| February | 7.6 °C | 0.5 °C | 8 | 6.3 h |
| March | 11.5 °C | 2.3 °C | 7 | 8.3 h |
| April | 16 °C | 6.2 °C | 10 | 9.6 h |
| May | 19.7 °C | 10.6 °C | 13 | 10.5 h |
| June | 25.8 °C | 15.8 °C | 12 | 12.6 h |
| July | 27.1 °C | 17.3 °C | 10 | 12.3 h |
| August | 27 °C | 17.1 °C | 9 | 11.4 h |
| September | 21.8 °C | 12.8 °C | 9 | 9.2 h |
| October | 16 °C | 8.3 °C | 9 | 7.2 h |
| November | 9 °C | 3.1 °C | 9 | 4.9 h |
| December | 5.1 °C | 0 °C | 10 | 4 h |
How the months are picked.A month qualifies when its average high sits in the comfortable 20–28 °C band (scored down towards 9 °C and 37 °C), rain days are few and sunshine hours are high — at least 78 % of the city's best-scoring month. July and August are then set aside as peak season (school-holiday crowds and prices) whenever at least three other months qualify; where summer is the only comfortable window they stay. Figures are ten-year averages (2016-01-01 to 2025-12-31) from ERA5 reanalysis data via Open-Meteo (CC BY 4.0) for the city centre coordinates.
When to go, and what to expect
Spring (Mar–May)
Lovely for blossoms and café terraces — May is a top pick despite the showers.
Summer (Jun–Aug)
June is excellent; July and August suit those who don't mind heat and queues.
Autumn (Sep–Nov)
September is one of the year's best months — warm, calm and clear.
Winter (Dec–Feb)
Worth it for markets, concerts and museums; pack for the chill.
Notable events
- Mid-November to December
- Vienna Christmas Markets (Christkindlmärkte)
- January to February
- Vienna New Year's Concert & Ball Season
- May to June
- Wiener Festwochen (Vienna Festival of arts and performance)
- June
- Donauinselfest (Danube Island open-air music festival)
Frequently asked
Is Vienna too hot in August?
August is Vienna's warmest stretch alongside July, with average highs of 27 °C and 11.4 hours of sun a day. It's comfortable rather than extreme, but combined with peak crowds many travellers prefer June or September instead.
What is the rainiest month in Vienna?
May sees the most rain days at 13, with June close behind at 12. That said, May still enjoys 10.5 hours of sunshine a day, so showers tend to be passing rather than washouts.
Is winter worth visiting Vienna?
Yes, if you come for the atmosphere. Winter is cold, with January highs of 4.1 °C and only 4.5 hours of sun a day, but the Christmas markets, concerts and quieter museums make it rewarding — just dress warmly.
Know when to go? Now decide where to stay — our Vienna area guide →
Areas of Vienna
Best time to visit near here
Sources
- Open-Meteo historical weather API — monthly climate normals, 2016–2025 (CC BY 4.0)
- ERA5 reanalysis (ECMWF / Copernicus) — the underlying temperature, precipitation and sunshine data
- ReasonStay methodology — how the best months are computed and checked
An independent guide to Vienna — honest, verified, no invented data. Climate figures: ERA5 via Open-Meteo, 2016–2025 averages; the best months are computed from them, not opinion.