Weather in April
Temperature
April's arrival in Portorož sees a mild rise in the average high-temperature, transitioning from March's moderate 13.1°C (55.6°F) to a comfortable 16.8°C (62.2°F). In the month of April, Portorož witnesses a consistent average low-temperature of 6.9°C (44.4°F).Humidity
The average relative humidity in April is 55%.Rainfall
In April, the rain falls for 10.2 days. Throughout April, 65mm (2.56") of precipitation is accumulated. Throughout the year, in Portorož, Slovenia, there are 113.1 rainfall days, and 931mm (36.65") of precipitation is accumulated.Sea temperature
In Portorož, in April, the average water temperature is 13.1°C (55.6°F).Note: Swimming in 13.1°C (55.6°F) can be lethal. Merely spending a few minutes in 13°C (55.4°F) waters feels harsh, and venturing below 10°C (50°F) might disrupt breathing control and bring about cold shock, contingent on individual resilience.
Daylight
In Portorož, the average length of the day in April is 13h and 32min.On the first day of April in Portorož, sunrise is at 06:44 and sunset at 19:33. On the last day of the month, sunrise is at 05:54 and sunset at 20:11 CEST.
Sunshine
The average sunshine in April is 6.5h.UV index
The average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The average daily UV index of 5 in April transforms into the following instructions:
Heed the precautions - It is counselled to guard against solar damage. To guard against the harmful effects of the Sun, minimize exposure during midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What is the average April temperature in Portorož?
What is the average humidity in April in Portorož?
How many days does it rain in April in Portorož?
What is the sea water temperature in April in Portorož?
What is the average length of the day in April in Portorož?
When is the sunrise / sunset in April in Portorož?
How many hours of sunshine does Portorož have in April?
What is the UV index reading in April in Portorož?
Average temperature in April
Portorož, Slovenia
- Average high temperature in April: 16.8°C
The warmest month (with the highest average high temperature) is July (28.4°C).
The month with the lowest average high temperature is January (8.6°C).
- Average low temperature in April: 6.9°C
The month with the highest average low temperature is July (16.5°C).
The coldest month (with the lowest average low temperature) is February (0.4°C).
Average humidity in April
Portorož, Slovenia
- Average humidity in April: 55%
The month with the highest relative humidity is January (68%).
The month with the lowest relative humidity is July (50%).
Average rainfall in April
Portorož, Slovenia
- Average rainfall in April: 65.3mm
The wettest month (with the highest rainfall) is September (123.8mm).
The driest month (with the least rainfall) is February (47.1mm).
Average rainfall days in April
Portorož, Slovenia
- Average rainfall days in April: 10.2 days
The month with the highest number of rainy days is May (11 days).
The month with the least rainy days is February (7.5 days).
Average sea temperature in April
Portorož, Slovenia
- Average sea temperature in April: 13.1°C
The best months for swimming (with the highest average sea temperature) are July and August (24.8°C).
The coldest month (with the lowest average sea temperature) is February (9.3°C).
Average daylight in April /
Average sunshine in April
Portorož, Slovenia
- Average daylight in April: 13h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in April: 6h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
Average UV index in April
Portorož, Slovenia
- Average UV index in April: 5
The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January, November and December (UV index 1).
Portorož, Slovenia
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