SloveniaThe weather in May in Postojna
It's pleasantly warm in May in Postojna with an average temperature of 20°C. Temperatures this month range from a low of 17°C to a high of 23°C. At night, you can expect temperatures between 6°C and 11°C.
Looking for sun? May isn’t a good month to be in Postojna. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Postojna, Slovenia. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 28°C in 2022, Postojna reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 6°C in 2021. The extreme nighttime temperatures ranged from a lowest recorded value of -2°C to a highest value of 16°C.
Rainfall amount
In May, there is an average of 126 mm of precipitation, spread over 16 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
Daily weather in May for Postojna
Click on any day in May to get detailed info about the usual weather on that day in Postojna. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Postojna | New York | |
|---|---|---|
| Average temperature | 20°C | 22°C |
| Max. temperature | 23°C | 28°C |
| Min. temperature | 6°C | -5°C |
| Total precipitation | 126 mm | 105 mm |
| Rainy days | 16 days | 14 days |
Start of May
The month of May starts in Postojna with mild temps, averaging around 19°C during the day and nights around 8°C.
Mid May
By mid-May, daytime temps stay steady at around 19°C, with nights around 10°C. There’s a high chance of precipitation during this time.
End of May
By the end of May, the average daytime temperature in Postojna is around 22°C, while nighttime temps are about 11°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Find affordable trips to Postojna
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Check out the climate of Postojna for all months and discover the best travel time
Curious about the weather in other parts of Slovenia? Check out the climate and weather for spots like Ljubljana, Bled, Bohinj, or explore other destinations in Slovenia.
Temperature charts
These charts show the average temperatures in May in Postojna, Slovenia. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Postojna
Temperature in May in Postojna over the years
Precipitation charts
These charts show the average amount of precipitation in May in Postojna, Slovenia. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in Postojna
Total precipitation in May in Postojna over the years
Daily UV index in May in Postojna
This chart shows the average daily UV index in May in Postojna, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in May in Postojna
Have you been to Postojna in May?
Share your weather experience in May in Postojna.
Average weather in Postojna by month
Click on a month below to see detailed weather info for Postojna. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.