The best time to visit Strasbourg is May, June and September, when average highs sit in the comfortable 20–28 °C range with plenty of sunshine. June reaches an average high of 25.1 °C with 13 rain days, while September is the driest of the trio at 21.9 °C and just 10 rain days. July and August stay warm but fall in peak season, crowded and pricier with French school holidays. Winter is the quiet low season, cold and grey, though December's Christmas markets draw their own crowds around Petite France.
Best months MayJuneSeptember
Strasbourg month by month
Average highs and lows (°C), 2016–2025. Highlighted bars are the best months.
| Month | High | Low | Rain days | Sun / day |
|---|---|---|---|---|
| January | 5.6 °C | 0 °C | 14 | 4.2 h |
| February | 8.7 °C | 1.3 °C | 12 | 5.9 h |
| March | 12.1 °C | 2.6 °C | 12 | 7.9 h |
| April | 16 °C | 5.7 °C | 11 | 10 h |
| May | 20 °C | 10.1 °C | 13 | 11.1 h |
| June | 25.1 °C | 15 °C | 13 | 12 h |
| July | 26.1 °C | 16 °C | 12 | 12.5 h |
| August | 26 °C | 16.1 °C | 12 | 11.1 h |
| September | 21.9 °C | 12.5 °C | 10 | 9.7 h |
| October | 16.4 °C | 8.6 °C | 12 | 6.9 h |
| November | 9.4 °C | 3.6 °C | 14 | 4.8 h |
| December | 6.5 °C | 1.3 °C | 14 | 3.7 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)
May is one of the best months — mild, bright and green along the canals.
Summer (Jun–Aug)
June is ideal; midsummer is lively but busiest and pricier.
Autumn (Sep–Nov)
September is a top pick — warm, dry and uncrowded.
Winter (Dec–Feb)
Skip for weather, but worth it for the famous Christmas market.
Notable events
- Late November to December
- Strasbourg Christmas Market (Christkindelsmärik)
- July
- Bastille Day
- June
- Fête de la Musique
- September
- European Fantastic Film Festival
Frequently asked
Is Strasbourg too hot in August?
No — August has an average high of 26 °C, warm but not extreme. The bigger drawback is crowds, as it falls in peak school-holiday season.
What is the rainiest month in Strasbourg?
January, November and December each see 14 rain days. Among the best months, September is driest with just 10 rain days.
Is winter worth visiting?
Weather-wise it's cold and dim — December averages a high of 6.5 °C with only 3.7 hours of sunshine a day. But the Christmas market makes late November and December a special, if busy, time to visit.
Know when to go? Now decide where to stay — our Strasbourg area guide →
Areas of Strasbourg
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 Strasbourg — honest, verified, no invented data. Climate figures: ERA5 via Open-Meteo, 2016–2025 averages; the best months are computed from them, not opinion.