Heidelberg Weather in September
Heidelberg in September
The short of it: Heidelberg in September averages a high of 21 °C (69 °F) and a low of 11 °C (52 °F), with 70 mm (2.8 in) of rain and about 12 h 31 min of daylight. Rated 4 of 5 for a visit; the best months are April and June. Source: TerraClimate climate normals, 1991–2020.
Average high 21° · low 11° · rain 70 mm · daylight 12 h 31 min
✦✦✦✦ Recommended for a visit · best months: April & June
Thirty years of records give Heidelberg an average September high of 21°, a low of 11° and some 70 mm of rain. Highs fall 5° against August, to near 21°; nights run about 11°. Wet spells are common — about 70 mm, the 5th wettest month.
The sun is up for about 12 h 31 min in mid-September, 113 minutes less than a month before.
For the traveller: pack light clothes and a jacket for the evening, and an oilskin besides. The Almanac rates September 4 of 5 for a visit; the finest months here are April and June.
Against its neighbours, Heidelberg runs cooler than most and wetter than most in September. Leimen, 7 km to the S, sees much the same highs.
September in Heidelberg, by the numbers
- Warmth rank
- 5th warmest of 12
- Rain rank
- 5th wettest of 12
- Versus August
- 5° colder, 14 mm more rain
- Versus October
- 6° warmer
- Day–night spread
- 9°
- Snow season
- Dec–Feb
- Daylight, mid-month
- 12 h 31 min
- Average wind
- 8 km/h
Neighbouring Towns
September averages · distance by the crow’s flight| Town | Distance | High | Low | Rain |
|---|---|---|---|---|
| LeimenBaden-Wurttemberg | 7 km S | 21° | 11° | 69 mm |
| WieslochBaden-Wurttemberg | 13 km S | 21° | 11° | 69 mm |
| WeinheimBaden-Wurttemberg | 16 km N | 20° | 10° | 70 mm |
| ViernheimHesse | 17 km NNW | 21° | 11° | 58 mm |
| MannheimBaden-Wurttemberg | 19 km WNW | 21° | 11° | 57 mm |
| Ludwigshafen am RheinRheinland-Pfalz | 19 km WNW | 21° | 11° | 57 mm |
| SpeyerRheinland-Pfalz | 21 km WSW | 21° | 11° | 60 mm |
| SinsheimBaden-Wurttemberg | 22 km SE | 20° | 10° | 72 mm |