Hennef (Sieg) Climate by Month
Hennef (Sieg), North Rhine-Westphalia, Germany
Warm summers and cool winters, with rain spread through the year.
The climate in Hennef (Sieg) is one of warm summers and cool winters, with rain spread through the year. Expect highs of 77°F (25°C) in July and 42°F (6°C) in January, with the coldest nights (February) near 32°F (0°C). It gets 33 in (847 mm) of rain a year, spread across the months.
- Warmest month
- 77°F(25°C)
- Average high, July
- Coldest nights
- 32°F(0°C)
- Average low, February
- Rain per year
- 33 in(847 mm)
- No clear rainy season
- Humidity
- 75%
- Sunniest: June
Best and worst months in Hennef (Sieg)
Best for weatherJune to August are the best time for weather in Hennef (Sieg): highs near 75°F (24°C) and about 3.3 in (83 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 44°F (6°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in August.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Hennef (Sieg) weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 42°F(6°C) | 33°F(0°C) | 2.8 in(72 mm) | 79% | 0.7 |
| FebFebruary | 45°F(7°C) | 32°F(0°C) | 2.4 in(61 mm) | 76% | 1.4 |
| MarMarch | 52°F(11°C) | 36°F(2°C) | 2.5 in(63 mm) | 72% | 2.5 |
| AprApril | 60°F(16°C) | 41°F(5°C) | 1.8 in(46 mm) | 63% | 4.1 |
| MayMay | 68°F(20°C) | 47°F(9°C) | 2.6 in(66 mm) | 68% | 5.0 |
| JunJuneBest | 73°F(23°C) | 53°F(12°C) | 3.0 in(76 mm) | 71% | 5.3 |
| JulJulyBest | 77°F(25°C) | 56°F(14°C) | 3.7 in(93 mm) | 68% | 5.2 |
| AugAugustBest | 76°F(24°C) | 55°F(13°C) | 3.1 in(80 mm) | 70% | 4.4 |
| SepSeptember | 68°F(20°C) | 50°F(10°C) | 2.6 in(67 mm) | 77% | 3.1 |
| OctOctober | 59°F(15°C) | 44°F(7°C) | 2.8 in(72 mm) | 85% | 1.7 |
| NovNovember | 50°F(10°C) | 38°F(4°C) | 2.7 in(68 mm) | 82% | 0.9 |
| DecDecember | 44°F(6°C) | 34°F(1°C) | 3.3 in(83 mm) | 88% | 0.5 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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