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Portorož (or Portorose) is located in the short coastal stretch of Slovenian, about 20 km (12 mi) south-west of Trieste. The sea mitigates the climate, but we are in the area where the bora can blow, the cold, dry wind from the eastern European plains.
to visit Portoroz are spring and autumn, and in particular, from mid-April to mid-June and in the month of September. However, in both periods, some rainy days are possible.
The best months to go to the beach are July and August. In June, the sea is still a little cool.
. Here are the average temperatures.
January, the coldest month of the year, is generally a quite cold month. The average temperature is of
5.3 °C, with a minimum of
1.3 °C and a maximum of
9.2 °C.
On the coldest nights of the month, the temperature usually drops to around
-5 °C. However, it dropped to
-9.5 °C in January 2000.
On the warmest days of the month, the temperature usually reaches around
14.5 °C. However, it reached
18.2 °C in January 2014.
Precipitation amounts to
50 mm, distributed over 6 days.
The day lasts on average 9 hours and 10 minutes.
There are on average 3.5 hours of sunshine per day. So, the sun shines 37% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average sea temperature is of
11.6 °C. Therefore, the sea is very cold for swimming.
February is generally a quite cold month. The average temperature is of
5.8 °C, with a minimum of
1.2 °C and a maximum of
10.3 °C.
On the coldest nights of the month, the temperature usually drops to around
-4.5 °C. However, it dropped to
-10.3 °C in February 1991.
On the warmest days of the month, the temperature usually reaches around
15.5 °C. However, it reached
19.2 °C in February 2006.
Precipitation amounts to
60 mm, distributed over 6 days.
The day lasts on average 10 hours and 25 minutes.
There are on average 4.5 hours of sunshine per day. So, the sun shines 45% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average sea temperature is of
10.4 °C. Therefore, the sea is very cold for swimming.
March is generally a mild month. The average temperature is of
9.1 °C, with a minimum of
4.1 °C and a maximum of
14.1 °C.
On the coldest nights of the month, the temperature usually drops to around
-2 °C. However, it dropped to
-10.5 °C in March 2005.
On the warmest days of the month, the temperature usually reaches around
19.5 °C. However, it reached
23.2 °C in March 2017.
Precipitation amounts to
55 mm, distributed over 6 days.
The day lasts on average 12 hours and 0 minutes.
There are on average 6 hours of sunshine per day. So, the sun shines 50% of the time.
The average humidity is 70%.
The average sea temperature is of
11 °C. Therefore, the sea is very cold for swimming.
April is generally a mild month. The average temperature is of
12.9 °C, with a minimum of
7.6 °C and a maximum of
18.1 °C.
On the coldest nights of the month, the temperature usually drops to around
1.5 °C. However, it dropped to
-4.2 °C in April 2003.
On the warmest days of the month, the temperature usually reaches around
24 °C. However, it reached
28.2 °C in April 2018.
Precipitation amounts to
65 mm, distributed over 8 days.
The day lasts on average 13 hours and 35 minutes.
There are on average 7 hours of sunshine per day. So, the sun shines 52% of the time.
The average humidity is 70%.
The average sea temperature is of
13.7 °C. Therefore, the sea is very cold for swimming.
May is generally a very mild month. The average temperature is of
17.2 °C, with a minimum of
11.8 °C and a maximum of
22.7 °C.
On the coldest nights of the month, the temperature usually drops to around
6.5 °C. However, it dropped to
3.3 °C in May 2011.
On the warmest days of the month, the temperature usually reaches around
28 °C. However, it reached
33.2 °C in May 2008.
Precipitation amounts to
75 mm, distributed over 8 days.
The day lasts on average 14 hours and 55 minutes. So the days are long.
There are on average 8.5 hours of sunshine per day. So, the sun shines 57% of the time.
The average humidity is 70%.
The average sea temperature is of
18.1 °C. Therefore, the sea is cold for swimming.
June is generally a warm month. The average temperature is of
21.3 °C, with a minimum of
15.5 °C and a maximum of
27 °C.
On the coldest nights of the month, the temperature usually drops to around
10.5 °C. However, it dropped to
6.4 °C in June 2006.
On the warmest days of the month, the temperature usually reaches around
32.5 °C. However, it reached
35.6 °C in June 2019.
Precipitation amounts to
75 mm, distributed over 6 days.
The day lasts on average 15 hours and 35 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
There are on average 9.5 hours of sunshine per day. So, the sun shines 62% of the time.
The average humidity is 70%.
The average sea temperature is of
22.4 °C. Therefore, the sea can be considered barely acceptable for swimming.
July, the warmest month of the year, is generally a warm to hot month. The average temperature is of
23.4 °C, with a minimum of
17.4 °C and a maximum of
29.4 °C.
On the coldest nights of the month, the temperature usually drops to around
12.5 °C. However, it dropped to
8.8 °C in July 2007.
On the warmest days of the month, the temperature usually reaches around
34 °C. However, it reached
37.4 °C in July 2015.
Precipitation amounts to
60 mm, distributed over 5 days.
The day lasts on average 15 hours and 10 minutes. So the days are long.
There are on average 11 hours of sunshine per day. So, the sun shines 71% of the time.
The average humidity is 65%.
The average sea temperature is of
25.1 °C. Therefore, the sea is warm enough for swimming.
August is generally a warm to hot month. The average temperature is of
23.4 °C, with a minimum of
17.3 °C and a maximum of
29.5 °C.
On the coldest nights of the month, the temperature usually drops to around
11.5 °C. However, it dropped to
7.5 °C in August 2005.
On the warmest days of the month, the temperature usually reaches around
33.5 °C. However, it reached
37.3 °C in August 2017.
Precipitation amounts to
70 mm, distributed over 6 days.
The day lasts on average 14 hours and 0 minutes.
There are on average 10 hours of sunshine per day. So, the sun shines 72% of the time.
The average humidity is 70%.
The average sea temperature is of
25.6 °C. Therefore, the sea is warm enough for swimming.
September is generally a warm month. The average temperature is of
19.1 °C, with a minimum of
13.7 °C and a maximum of
24.6 °C.
On the coldest nights of the month, the temperature usually drops to around
8 °C. However, it dropped to
4.8 °C in September 2008.
On the warmest days of the month, the temperature usually reaches around
29.5 °C. However, it reached
32.5 °C in September 2016.
Precipitation amounts to
120 mm, distributed over 8 days.
The day lasts on average 12 hours and 30 minutes.
There are on average 7.5 hours of sunshine per day. So, the sun shines 59% of the time.
The average humidity is 75%. Hence, the air is normally humid.
The average sea temperature is of
23 °C. Therefore, the sea can be considered barely acceptable for swimming.
October is generally a very mild month. The average temperature is of
14.9 °C, with a minimum of
10.2 °C and a maximum of
19.6 °C.
On the coldest nights of the month, the temperature usually drops to around
3 °C. However, it dropped to
-1.8 °C in October 2003.
On the warmest days of the month, the temperature usually reaches around
24.5 °C. However, it reached
27.5 °C in October 2000.
Precipitation amounts to
105 mm, distributed over 8 days.
The day lasts on average 10 hours and 55 minutes.
There are on average 5.5 hours of sunshine per day. So, the sun shines 49% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average sea temperature is of
19.6 °C. Therefore, the sea is very cool for swimming.
November is generally a mild month. The average temperature is of
10.5 °C, with a minimum of
6.6 °C and a maximum of
14.5 °C.
On the coldest nights of the month, the temperature usually drops to around
-1 °C. However, it dropped to
-5 °C in November 1995.
On the warmest days of the month, the temperature usually reaches around
20 °C. However, it reached
24.4 °C in November 2004.
Precipitation amounts to
125 mm, distributed over 9 days.
The day lasts on average 9 hours and 30 minutes.
There are on average 3 hours of sunshine per day. So, the sun shines 34% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average sea temperature is of
16.5 °C. Therefore, the sea is cold for swimming.
December is generally a quite cold month. The average temperature is of
6.4 °C, with a minimum of
2.4 °C and a maximum of
10.3 °C.
On the coldest nights of the month, the temperature usually drops to around
-4.5 °C. However, it dropped to
-9.9 °C in December 2009.
On the warmest days of the month, the temperature usually reaches around
15.5 °C. However, it reached
19.1 °C in December 2014.
Precipitation amounts to
80 mm, distributed over 7 days.
The day lasts on average 8 hours and 50 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
There are on average 3 hours of sunshine per day. So, the sun shines 35% of the time.
The average humidity is 80%. Hence, the air is normally humid.
The average sea temperature is of
13.9 °C. Therefore, the sea is very cold for swimming.