Bonn

Bonn sits on the Rhine River in western Germany, about 25 minutes south of Cologne. The city was West Germany’s capital from 1949 to 1990 and remains an important federal city with several government ministries still based here. Ludwig van Beethoven was born at Bonngasse 20 in 1770 and the city celebrates his legacy year-round with festivals, concerts, and one of Europe’s best composer-house museums. Bonn’s compact Altstadt, five-museum Museum Mile, and cherry blossom avenues draw visitors looking for a less touristy alternative to Cologne with easy access to the Siebengebirge hills and the Ahr Valley wine region.

Bonn Weather at a Glance

Bonn has a temperate oceanic climate (Köppen Cfb) with mild winters and warm summers. January averages 5°C (41°F) by day and -1°C (30°F) at night with 11 rainy days and just 1.5 hours of daily sun. July and August peak at 24°C (75°F) with 6.5 hours of sun and 10-11 rainy days per month. Annual rainfall totals 670mm (26 inches) spread across roughly 130 rainy days with no pronounced dry season. The Rhine moderates temperature extremes: Bonn rarely drops below -5°C (23°F) in winter or exceeds 35°C (95°F) in summer. February is the driest month (40mm), June and July are the wettest (70mm each). For a detailed breakdown, see our Bonn weather by month guide.

Seasonal Snapshot

• Spring (March to May): Cherry blossoms peak in late March to mid-April on Heerstrasse and Breite Strasse. Temperatures climb from 11°C (52°F) in March to 19°C (66°F) in May. The best season for walking the Rhine promenade, hiking the Siebengebirge, and outdoor cafe culture.
• Summer (June to August): Warmest months average 22-24°C (72-75°F) with 6-6.5 hours of daily sun. Afternoon showers are common in June and July (70mm each). Beer gardens, Rheinaue Park, and Rhine boat trips are at their peak.
• Autumn (September to November): September stays warm at 20°C (68°F) and hosts the month-long Beethovenfest. October brings golden foliage to the Kottenforst and Siebengebirge forests. November is the darkest, rainiest month.
• Winter (December to February): Grey and damp rather than snowy, with highs of 5-7°C (41-45°F). The Christmas market on Münsterplatz runs through December 23. Karneval in February or March brings street parades and city-wide parties.

Bonn Travel Guides

• Bonn Weather by Month: Monthly temperatures, rainfall, sunshine hours, and what to pack for each season. Climate table with average highs, lows, and rainy days.
• Best Time to Visit Bonn: Cherry blossom season dates, weather by month, crowd levels, hotel prices, and the full events calendar from Karneval to Beethovenfest.
• Things to Do in Bonn: Beethoven-Haus birthplace museum, Museum Mile with five museums, Rhine boat trips, Drachenfels castle hike, cherry blossom avenues, and day trips to Cologne and the Ahr Valley.
• Bonn Events and Festivals: Beethovenfest classical music, Karneval street parades, Rhein in Flammen fireworks, Pützchens Markt funfair, Christmas markets, and cherry blossom festival.
• Best Neighborhoods in Bonn: Altstadt, Südstadt, Poppelsdorf, Beuel, Bad Godesberg, and Nordstadt. Where to stay, eat, and what each district offers.
• Where to Stay in Bonn: Hotels in the Altstadt, Bad Godesberg, and Poppelsdorf with specific recommendations for luxury, mid-range, and budget travelers.
• Bonn Travel Tips and FAQ: Cologne Bonn Airport transport, public transit costs, tipping customs, tap water safety, visa requirements, mobile data, accessibility, and answers to common questions.

Where is Bonn?

Bonn is in western Germany in the state of North Rhine-Westphalia, on the left bank of the Rhine River about 25km (15 miles) south of Cologne and 90km (56 miles) north of Koblenz. The city sits at the northern end of the Middle Rhine Valley where the river cuts through the Rhenish Slate Mountains (Siebengebirge range). The Rhine influences Bonn’s climate by moderating temperature extremes. Bonn was chosen as West Germany’s provisional capital in 1949 in part because of its modest size (then 115,000 people): the thinking was that a small capital would signal the government’s temporary nature before reunification. Berlin reclaimed the capital in 1990 but six federal ministries, 19 UN organizations, and Deutsche Post DHL still have their headquarters in Bonn, giving the city an international, white-collar character alongside its university-town atmosphere.

Quick Facts

• Best months to visit: May and September offer the best balance of pleasant weather (19-20°C / 66-68°F), manageable crowds, and 4.5-6 hours of daily sun.
• Warmest months: July and August, average high 24°C (75°F), occasional heatwaves push above 32°C (90°F).
• Coldest month: January, average high 5°C (41°F), average low -1°C (30°F).
• Wettest months: June and July (70mm each), though rain comes as short showers rather than all-day drizzle.
• Driest months: February (40mm, 9 rainy days) and April (45mm, 9 rainy days).
• Cherry blossom peak: Late March to mid-April, typically 10-14 days around the first or second week of April.
• Sunniest months: June and July at 6.5 hours per day. Least sunny: December at 1 hour per day.
• Annual rainfall: 670mm (26 inches), roughly 130 rainy days per year.
• Nearest airport: Cologne Bonn Airport (CGN), 20km north, 30 minutes by SB60 express bus (€8.50).
• Population: Approximately 330,000 in the city, 900,000 in the Bonn/Cologne metro area.

Suggested Hotels in Bonn

Kameha Grand Bonn

Bonn’s only 5-star hotel sits directly on the Rhine in Bad Godesberg with a rooftop pool, full-service spa, and four restaurants including a Michelin-plate Pan-Asian restaurant. The 254 rooms feature floor-to-ceiling windows and contemporary design. Best for luxury travelers, honeymoons, and special occasions. Check rates and availability

Sternhotel Bonn

Historic family-run hotel on the Marktplatz in the heart of the Altstadt, operated by the same family for four generations since the 17th century. The Altes Rathaus, Beethoven-Haus, and the main restaurant and bar district are all within a 5-minute walk. Best for first-time visitors who want the most central location. Check rates and availability

Motel One Bonn-Hauptbahnhof

Design-budget chain hotel directly at the train station with compact, well-designed rooms, a 24-hour lobby bar, and air conditioning. 3 minutes to trams, 25 minutes to Cologne by train. Best for solo travelers, business stopovers, and Cologne day trips. Check rates and availability