The best months to visit Frankfurt are May, June and September. These bring comfortable warmth and long sunny days without the crush of high summer: June averages a high of 25.2 °C with 11 rain days, while September sits at 21.6 °C with 10 rain days and still generous sunshine. July and August are pleasant too, but as school holidays fill the city and lift prices, they count as peak season. Winter is the quiet, low season — cold and grey, with December seeing highs of just 6 °C and only 2.8 hours of sunshine a day, though the Christmas markets around the Römer draw their own crowds.
Best months MayJuneSeptember
Frankfurt month by month
Average highs and lows (°C), 2016–2025. Highlighted bars are the best months.
| Month | High | Low | Rain days | Sun / day |
|---|---|---|---|---|
| January | 5.3 °C | 0.2 °C | 13 | 3.7 h |
| February | 7.8 °C | 0.9 °C | 11 | 5.6 h |
| March | 11.4 °C | 2.4 °C | 12 | 7.6 h |
| April | 15.5 °C | 5.3 °C | 11 | 10.2 h |
| May | 19.8 °C | 9.8 °C | 11 | 11.3 h |
| June | 25.2 °C | 14.7 °C | 11 | 12.2 h |
| July | 26 °C | 15.7 °C | 11 | 12.2 h |
| August | 26 °C | 15.8 °C | 10 | 11.1 h |
| September | 21.6 °C | 12.1 °C | 10 | 9.4 h |
| October | 15.7 °C | 8.2 °C | 12 | 6.2 h |
| November | 9 °C | 3.5 °C | 13 | 4.1 h |
| December | 6 °C | 1.2 °C | 13 | 2.8 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 year's best months — mild, bright and uncrowded.
Summer (Jun–Aug)
June is ideal; July and August suit those who don't mind heat and crowds.
Autumn (Sep–Nov)
September is a top pick; October is decent, November greys over.
Winter (Dec–Feb)
Only worth it for the festive markets; otherwise skip.
Notable events
- Late November–December
- Frankfurt Christmas Market (Weihnachtsmarkt) around the Römer
- August
- Museumsuferfest (Museum Embankment Festival)
- October
- Frankfurt Book Fair (Frankfurter Buchmesse)
- Summer
- Apple Wine Festival (Apfelweinfestival)
Frequently asked
Is Frankfurt too hot in August?
Rarely. August highs average 26 °C with lows near 15.8 °C, so days are warm but comfortable. The bigger drawback is crowds and prices during school holidays.
What is the rainiest month in Frankfurt?
January, November and December each see 13 rain days, the most of the year. The best months are drier and sunnier — September has 10 rain days and 9.4 hours of sunshine a day.
Is winter worth visiting?
Mainly for the Christmas markets around the Römer. Expect cold, grey days — December highs of 6 °C and only 2.8 hours of sunshine a day — so pack warm and keep sightseeing brief.
Know when to go? Now decide where to stay — our Frankfurt area guide →
Areas of Frankfurt
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 Frankfurt — honest, verified, no invented data. Climate figures: ERA5 via Open-Meteo, 2016–2025 averages; the best months are computed from them, not opinion.