Temperature
Pleasant by day, brisk at night.
Bad Honnef is most comfortable in early autumn. Summers are warm and winters are cool. Rain is spread through the year. Humidity is usually low.

Pleasant by day, brisk at night.
Recurring showers across the month.
Cloudier spells limit sunshine.
Some hot afternoons, with mostly dry air.
In August, afternoons feel about 71° and nights feel near 59°.
Mostly cloudy skies.
August late afternoons are around 74°F, easing to about 71°F in early evening.
Calm winds are typical in August.
Want a side-by-side climate view? Compare Bad Honnef with New York City.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 11, 2026
Data & methodology