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Hourly Forecast
Daylight Hours
07:10
Sunrise
19:27
Sunset
Moon
Waxing Crescent
13:29
Moonrise
21:17
Moonset
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Weather in Heidelberg today, September 16, 2026
Rain features in Heidelberg on September 16, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Expect a grey start, with morning cloud around 95% by 11:00. Outdoor plans early on should not rely on bright skies.
Temperatures climb from an overnight low near 16°C toward a daytime high of about 23°C. Moisture in the air spans 41%-75%, with the highest values around 14:00. Airflow remains manageable, reaching about 4.2 km/h around 18:00.
The second half of the day still looks unsettled, with rain probability around 56% by 12:00. Dense cloud near 100% at 12:00 keeps the feel grey. Expect visibility near 37.8 km, with poorer spells close to 31.6 km. The sun rises at 07:10 and sets at 19:27, for a total of 12 hours 16 minutes of sunlight today.
In short, treat September 16, 2026 in Heidelberg as a damp day: pack covers, watch the wetter hours, and expect a high near 23°C.
Frequently asked questions about weather in Heidelberg
How warm does it get in Heidelberg?
The warmest month in Heidelberg is August, with average high temperatures of 25°C. The average temperature during this period is around 20°C.
How cold does it get in Heidelberg?
The coldest month in Heidelberg is January, with average low temperatures of 0°C. The average temperature during this period is around 2°C.
What is the wettest time of year in Heidelberg?
The wettest month in Heidelberg is December, with an average of 98mm of precipitation.
What is the driest time of year in Heidelberg?
The driest month in Heidelberg is April, with an average of 56mm of precipitation.
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