Heilbronn Climate by Month
Heilbronn, Baden-Wurttemberg, Germany
Warm summers and cool winters, with rain spread through the year.
The climate in Heilbronn is one of warm summers and cool winters, with rain spread through the year. Expect highs of 78°F (26°C) in July and 41°F (5°C) in January, with the coldest nights (January) near 31°F (-1°C). It gets 29 in (742 mm) of rain a year, spread across the months.
- Warmest month
- 78°F(26°C)
- Average high, July
- Coldest nights
- 31°F(-1°C)
- Average low, January
- Rain per year
- 29 in(742 mm)
- No clear rainy season
- Humidity
- 75%
- Sunniest: June
Best and worst months in Heilbronn
Best for weatherThe most comfortable weather comes in June and August, with highs around 77°F (25°C) and about 2.5 in (63 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 41°F (5°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 June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Heilbronn weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 41°F(5°C) | 31°F(-1°C) | 2.3 in(58 mm) | 84% | 0.9 |
| FebFebruary | 44°F(7°C) | 31°F(0°C) | 2.1 in(53 mm) | 79% | 1.6 |
| MarMarch | 52°F(11°C) | 36°F(2°C) | 2.1 in(54 mm) | 71% | 2.8 |
| AprApril | 62°F(17°C) | 41°F(5°C) | 1.5 in(37 mm) | 69% | 4.3 |
| MayMay | 69°F(21°C) | 49°F(9°C) | 3.1 in(79 mm) | 70% | 5.2 |
| JunJuneBest | 75°F(24°C) | 55°F(13°C) | 2.6 in(67 mm) | 67% | 5.6 |
| JulJuly | 78°F(26°C) | 58°F(14°C) | 3.0 in(75 mm) | 68% | 5.6 |
| AugAugustBest | 78°F(26°C) | 57°F(14°C) | 2.3 in(58 mm) | 70% | 4.8 |
| SepSeptember | 69°F(20°C) | 49°F(10°C) | 2.4 in(61 mm) | 76% | 3.3 |
| OctOctober | 59°F(15°C) | 43°F(6°C) | 2.7 in(68 mm) | 78% | 1.9 |
| NovNovember | 49°F(9°C) | 37°F(3°C) | 2.4 in(60 mm) | 86% | 1.0 |
| DecDecember | 42°F(6°C) | 33°F(0°C) | 2.8 in(72 mm) | 79% | 0.7 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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