Weather in Heidelberg: May
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Average day temperature: | 64.9°F |
| Average night temperature: | 50.1°F | |
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Number of sunny days: | 12 days |
| Day length: | 14.6 - 16.0 hours | |
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Number of rainy days: | 5 days |
| Precipitation totals: | 2.3 in. | |
| more information | ||
14 days
forecast
forecast
| Heidelberg |
weather in
June
June
| Heidelberg |
Air temperature in May, °F
Show year:
2026
2025
2024
The highest day temperature during May of 2026 was 84°F. At the same time the lowest night temperature was 36°F. Daily and nightly averages during May were 66.6°F and 51.0°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in May is almost equal.
Precipitation total in May, in.
Precipitation total value in Heidelberg in May is 2.2 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 6.1 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 7.9.
Best time for vacation in Heidelberg
Heidelberg on a weather map
Places in Germany:
Name
°F
24 Hours Forecast
Heidelberg
Local time: 13:01
November 14, saturday
1500
46°F
W
6 mph
6 mph
1800
39°F
W
8 mph
8 mph
2100
37°F
W
9 mph
9 mph
November 15, sunday
0000
36°F
W
6 mph
6 mph
0300
36°F
NW
5 mph
5 mph
0600
37°F
NW
5 mph
5 mph
0900
41°F
NW
5 mph
5 mph
1200
46°F
N
6 mph
6 mph
