Hannover in September
In September, Hannover averages 20°C (68°F) during the day and 12°C (53°F) at night, with around 10 days of rain (50 mm total).
High seasonConditions are comfortable for sightseeing without being sweltering. Plan for unsettled weather and bring rain gear.
September offers comfortable temperatures in Hannover, with some rain to plan around.
How September compares to the rest of the year in Hannover
September is in the middle of the year for warmth in Hannover (4th of 12) and one of the driest months (12th of 12). Daytime temperature runs 5°C above the annual average (15°C). September runs 4°C cooler than August (24°C) and cools 5°C in October (15°C).
September sunrise & sunset in Hannover
Times shown for Hannover local time (Europe/Berlin), calculated for the 15th of September. They shift by a few minutes day to day across the month.
Photography light in Hannover — September
Golden-hour and blue-hour windows for the 15th of September, in Hannover's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Hannover in September
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on September's tier (High season) and Hannover's popularity.
September in Germany — events that affect travel
Known cultural, religious, or national events that surge prices, fill hotels, or close businesses during this month. Plan around them, or build your itinerary around the ones you'd like to see.
Munich hotels triple in price and book out 6+ months ahead. The festival itself draws 6M+ visitors. Other German cities are unaffected.
Plan: Don't try to wing it. Book accommodation 8+ months out, or stay an hour away by train.
Crowds & pricing — September in Hannover
This is a busy month in Hannover — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: excellent tourism weather
Sun & mosquito risk — September in Hannover
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Hannover in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 5°C / 41°F | 1°C / 33°F | 64 mm | 15 | — |
| February | 7°C / 45°F | 1°C / 33°F | 57 mm | 12 | — |
| March | 10°C / 50°F | 2°C / 36°F | 53 mm | 12 | — |
| April | 14°C / 57°F | 4°C / 40°F | 42 mm | 10 | — |
| May | 18°C / 65°F | 9°C / 47°F | 51 mm | 11 | — |
| June | 23°C / 73°F | 13°C / 56°F | 65 mm | 10 | — |
| July | 24°C / 74°F | 15°C / 58°F | 77 mm | 13 | — |
| August | 24°C / 75°F | 15°C / 58°F | 63 mm | 13 | — |
| September | 20°C / 68°F | 12°C / 53°F | 50 mm | 10 | — |
| October | 15°C / 59°F | 9°C / 48°F | 65 mm | 13 | — |
| November | 9°C / 49°F | 4°C / 40°F | 58 mm | 12 | — |
| December | 7°C / 44°F | 3°C / 37°F | 71 mm | 15 | — |
Other cities with similar September weather
🌍 See the full ranked list of climate twins for Hannover in September →
Frequently asked questions
How hot is Hannover in September?
In September, Hannover averages a high of 20°C (68°F) and a low of 12°C (53°F) — generally mild and pleasant.
Does it rain a lot in Hannover in September?
September can be fairly wet in Hannover, with about 10 rainy days on average.
Is September a good time to visit Hannover?
September is mild and pleasant. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Hannover in September?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full September packing list for Hannover for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.