August weather forecast
Portorož, Slovenia

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Weather in August

In August, Portorož continues to experience high summer heat with temperatures closely mirroring those of July. In spite of being one of the hottest months, it’s traced with frequent rainfall, averaging about 78mm (3.07"). It's a peak season for tourists, so expect busy streets, full hotels, and populated beaches. Despite slight drops in sun hours, daylight remains abundant.

Temperature

August in Portorož begins with an average high-temperature of a still moderately hot 28.2°C (82.8°F), reflecting close similarity to the preceding month. During August, Portorož observes a consistent average nighttime temperature of 16.3°C (61.3°F).

Heat index

For most parts of August, the heat index is computed to be 29°C (84.2°F). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.
The metrics for the heat index are tailored for both shady environments and light winds. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', determines the feeling of heat when you account for the relative humidity. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

In Portorož, Slovenia, the average relative humidity in August is 51%.

Rainfall

In Portorož, during August, the rain falls for 7.6 days and regularly aggregates up to 78mm (3.07") of precipitation. Throughout the year, there are 113.1 rainfall days, and 931mm (36.65") of precipitation is accumulated.

Sea temperature

July and August, with an average sea temperature of 24.8°C (76.6°F), are months with the warmest seawater.
Note: Swimming in 24.8°C (76.6°F) waters may not appeal to those sensitive to cold. Yet, the presence of sunshine, the strength of the wind, and the air temperature can alter this experience. Some might even opt for a wetsuit for added comfort.

Daylight

In August, the average length of the day is 14h and 4min.
On the first day of the month, sunrise is at 05:50 and sunset at 20:33. On the last day of August, sunrise is at 06:26 and sunset at 19:45 CEST.

Sunshine

In August, the average sunshine in Portorož is 9.6h.

UV index

In August, the average daily maximum UV index is 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum high daily UV index of 7 during August translates into the following directions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Heads up! Sand and water reflection magnifies the UV exposure from the Sun.
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Frequently asked questions

How hot does it get in Portorož in August?

In August, in Portorož, the average high-temperature is 28.2°C (82.8°F), and the average low-temperature is 16.3°C (61.3°F). The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in August is computed to be 29°C (84.2°F).

What is the average humidity in August in Portorož?

In August, the average relative humidity in Portorož, Slovenia, is 51%.

How many days does it rain in August in Portorož?

In Portorož, during August, the rain falls for 7.6 days and regularly aggregates up to 78mm (3.07") of precipitation.

What months are the sea warmest in Portorož?

July and August, with an average sea temperature of 24.8°C (76.6°F), are months with the warmest seawater in Portorož.

What is the sea temperature in August in Portorož?

In August, the average sea temperature in Portorož, Slovenia, is 24.8°C (76.6°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 24.8°C (76.6°F) water may be enjoyable.

How many hours of daylight does Portorož have in August?

The average day length in August in Portorož, Slovenia, is 14h and 4min.

When is the sunrise / sunset in August in Portorož?

On the first day of August in Portorož, Slovenia, sunrise is at 05:50 and sunset at 20:33. On the last day of the month, sunrise is at 06:26 and sunset at 19:45 CEST.

How long on average sun shines in August in Portorož?

In Portorož, the average sunshine duration in August is 9.6h.

What is the UV index reading in August in Portorož?

In Portorož, the average daily maximum UV index in August is 7. A UV Index of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in August
Portorož, Slovenia

Average temperature in August - Portorož, Slovenia
  • Average high temperature in August: 28.2°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 August: 16.3°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).

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Average humidity in August
Portorož, Slovenia

Average humidity in August - Portorož, Slovenia
  • Average humidity in August: 51%

The month with the highest relative humidity is January (68%).
The month with the lowest relative humidity is July (50%).

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Average rainfall in August
Portorož, Slovenia

Average rainfall in August - Portorož, Slovenia
  • Average rainfall in August: 78.1mm

The wettest month (with the highest rainfall) is September (123.8mm).
The driest month (with the least rainfall) is February (47.1mm).

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Average rainfall days in August
Portorož, Slovenia

Average rainfall days in August - Portorož, Slovenia
  • Average rainfall days in August: 7.6 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).

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Average sea temperature in August
Portorož, Slovenia

Average sea temperature in August - Portorož, Slovenia
  • Average sea temperature in August: 24.8°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).

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Average daylight in August /
Average sunshine in August
Portorož, Slovenia

Average daylight in August / Average sunshine in August - Portorož, Slovenia
  • Average daylight in August: 14h and 1min

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 August: 9h and 4min

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).

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Average UV index in August
Portorož, Slovenia

Average UV index in August - Portorož, Slovenia
  • Average UV index in August: 7

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).

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Portorož, Slovenia

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