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Weather & Climate in Hennef (Sieg), Germany
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Hennef (Sieg) experiences four distinct seasons with an average annual temperature of 49°F (10°C). Winters average 36°F in January while summers reach 64°F in July. The area gets 277 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 32.6 inches. The area receives 2.6 inches of snow annually. The city sits at an elevation of 223 feet.
Temperature
36°F Jan (2°C)
64°F Jul (18°C)
| Annual Average | 49.4°F |
| 9% below US avg | |
| January Average | 36°F (2°C) |
| July Average | 64°F (18°C) |
| Sunny Days | 277 days/yr |
Geography
| Elevation | 223 ft (68 m) |
| Area | 48.7 sq mi (126.1 km²) |
| Population Density | 986/sq mi |
| Coordinates | 50.7756°N, 7.2831°W |
| Timezone | Europe/Berlin |
Precipitation & Snow
Air Quality
Earthquake History
530 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.4.
| Apr 13, 1992 | 1 km W of Kessenich, Belgium | M5.4 | 112 km | 21 km |
| Jul 22, 2002 | 2 km ENE of Haanrade, Netherlands | M4.8 | 84 km | 17 km |
| Jun 23, 2001 | 2 km ENE of Niel-bij-As, Belgium | M4.8 | 119 km | 10 km |
| Aug 3, 2007 | 2 km SE of Wehr, Germany | M4.4 | 41 km | 10 km |
| Apr 14, 1992 | 2 km SSE of Vaals, Netherlands | M4.3 | 88 km | 10 km |
| Jan 20, 2000 | 4 km NW of Rheinbach, Germany | M4.3 | 30 km | 10 km |
| Nov 29, 1997 | 6 km SE of Burgschwalbach, Germany | M4.3 | 85 km | 10 km |
| May 22, 2004 | 2 km ENE of Nickenich, Germany | M4.2 | 40 km | 10 km |
| Sep 8, 2011 | 3 km ENE of Heijen, Netherlands | M4.2 | 134 km | 6 km |
| Jul 24, 2009 | 2 km NW of Kamp-Lintfort, Germany | M4.1 | 99 km | 5 km |
| Mar 17, 2002 | 1 km SE of Stolberg, Germany | M4.0 | 73 km | 10 km |
| Jul 26, 2000 | 6 km ESE of Holzhausen an der Haide, Germany | M4.0 | 82 km | 10 km |
| Jun 23, 2001 | 1 km SW of Ulestraten, Netherlands | M4.0 | 107 km | 10 km |
| Nov 29, 1997 | 7 km N of Taunusstein, Germany | M3.9 | 87 km | 10 km |
| Jul 23, 1996 | 5 km NW of Stoumont, Belgium | M3.9 | 115 km | 10 km |
| Feb 14, 2011 | 4 km NE of Nassau, Germany | M3.9 | 62 km | 12 km |
| Nov 18, 1990 | 1 km SSW of Kaub, Germany | M3.8 | 85 km | 28 km |
| Mar 7, 2001 | Belgium | M3.8 | 101 km | 10 km |
| Mar 7, 2001 | 0 km WSW of Wijlre, Netherlands | M3.8 | 98 km | 10 km |
| Apr 13, 1992 | 3 km WSW of Koningsbosch, Netherlands | M3.8 | 101 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Nearby Volcanoes
1 volcano within 200 km. Closest: West Eifel Volcanic Field (74 km).
| Name | Type | Elevation | Last Eruption | Distance |
| West Eifel Volcanic Field | Maar(s) | 600 m (1,969 ft) | -8300 | 74 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 36°F (2°C) | 2.6 in | Coldest |
| February | 36°F (2°C) | 2.1 in | Driest |
| March | 42°F (6°C) | 2.7 in | |
| April | 47°F (9°C) | 2.2 in | |
| May | 56°F (13°C) | 2.8 in | |
| June | 61°F (16°C) | 3.3 in | |
| July | 64°F (18°C) | 3.4 in | Warmest, Wettest |
| August | 64°F (18°C) | 2.6 in | |
| September | 57°F (14°C) | 2.7 in | |
| October | 50°F (10°C) | 2.6 in | |
| November | 42°F (6°C) | 2.7 in | |
| December | 38°F (3°C) | 3.0 in |
Hennef (Sieg) has a seasonal temperature swing of 29°F / from 36°F in January to 64°F in July. Total annual precipitation is 32.6 inches, with July being the wettest month (3.4") and February the driest (2.1").