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March Weather in Heidelberg, United States

Last updated: June 24, 2025

In March, the average temperature in Heidelberg, United States hovers around 16°C (61°F). Expect a broad temperature range, where the minimum can dip to -3°C (26°F) and the maximum soars up to 32°C (89°F). Additionally, prepare for 121 mm (4.7 in) of precipitation over 11 days, accompanied by a high average humidity of 80%.

March Temperature in Heidelberg

In March in Heidelberg, the average temperature is 16°C (61°F). Maximum temperatures can reach 32°C (89°F), while minimums can drop as low as -3°C (26°F). Therefore, travelers should be prepared for a wide range of weather conditions during their visit.

March Weather in Heidelberg: Daily Temperature Highs, Lows, and Averages

The chart illustrates March temperature patterns in Heidelberg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Heidelberg, March typically has an average temperature of 16°C (61°F), with highs reaching up to 32°C (89°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec495561657479818178705652
Data source: Temperature data for Heidelberg generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

March Precipitation in Heidelberg

In Heidelberg in March, the total precipitation amount reaches 121 mm (4.7 in) over a span of 11 days.

March Precipitation Trends in Heidelberg

The chart displays monthly precipitation patterns in Heidelberg, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Heidelberg, March typically receives around 121 mm (4.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec110140121127137168137132979972133
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in Heidelberg

In Heidelberg in March, humidity is 80%. With an average temperature of 16°C (61°F), this humidity feels like a warm blanket wrapped around you, making sightseeing a sweat-inducing challenge but also lending a lush vibrancy to the surroundings that can enhance your travel experience.

March Average Humidity in Heidelberg

This chart illustrates the average monthly humidity levels in Heidelberg, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Heidelberg is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%78%73%71%79%78%80%76%83%87%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in Heidelberg

In Heidelberg in March, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Heidelberg.

Maximum UV Index Levels in Heidelberg for March

The chart shows the monthly maximum UV Index (UVI) for Heidelberg in March, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In March, the maximum UV index in Heidelberg typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec478111111111110864
Data source: Heidelberg March UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How March Weather in Heidelberg Compares to Other Months

Weather in Heidelberg varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in Heidelberg, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Heidelberg, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (50°F)110 mm (4.3 inches)82%moderate
February Weather13°C (55°F)140 mm (5.5 inches)80%high
March Weather16°C (61°F)121 mm (4.7 inches)80%very high
April Weather18°C (65°F)127 mm (5.0 inches)78%extreme
May Weather23°C (74°F)137 mm (5.4 inches)73%extreme
June Weather26°C (79°F)168 mm (6.6 inches)71%extreme
July Weather27°C (81°F)137 mm (5.4 inches)79%extreme
August Weather27°C (81°F)132 mm (5.2 inches)78%extreme
September Weather26°C (78°F)97 mm (3.8 inches)80%very high
October Weather21°C (70°F)99 mm (3.9 inches)76%very high
November Weather13°C (56°F)72 mm (2.8 inches)83%high
December Weather11°C (53°F)133 mm (5.3 inches)87%moderate

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