Weather in Postojna: May
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Average day temperature: | 63.4°F |
| Average night temperature: | 48.5°F | |
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Number of sunny days: | 11 days |
| Day length: | 14.3 - 15.5 hours | |
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Number of rainy days: | 9 days |
| Precipitation totals: | 5.1 in. | |
| more information | ||
14 days
forecast
forecast
| Postojna |
weather in
June
June
| Postojna |
Air temperature in May, °F
Show year:
2025
2024
2023
The highest day temperature during May of 2025 was 77°F. At the same time the lowest night temperature was 41°F. Daily and nightly averages during May were 61.6°F and 49.3°F.
Sunny, partly cloudy and cloudy days
Mostly all days in May are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in May, in.
Precipitation total value in Postojna in May is 5.9 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 5.5 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: 6.5.
Best time for vacation in Postojna
Postojna on a weather map
Places in Slovenia:
Name
°F
24 Hours Forecast
Postojna
Local time: 09:28
December 05, friday
1200
39°F
SW
4 mph
4 mph
1500
39°F
SW
6 mph
6 mph
1800
37°F
SW
6 mph
6 mph
2100
37°F
SW
6 mph
6 mph
December 06, saturday
0000
37°F
SW
5 mph
5 mph
0300
37°F
SW
4 mph
4 mph
0600
37°F
SW
4 mph
4 mph
0900
39°F
SW
4 mph
4 mph
