August weather forecast
Rijeka, Croatia

August in Rijeka continues the summer escapade with an average high temperature very similar to July’s. The city is drenched in an abundance of sunshine with sunlight hours being virtually akin to July. Despite being a summer month, rainfall sees an increase compared to July, with a precipitation of 102mm (4.02"). This does little to dampen the lively summer spirit, as the city remains alive with outdoor events and festivals. The sea temperatures peak, adding further enticement for beach activities.

Temperature

August, with average temperatures reaching a high of 28.1°C (82.6°F) and a low of 18.6°C (65.5°F), is the warmest month.

Heat index

For most parts of August, the heat index is evaluated at 29°C (84.2°F). Persisting in activity during exposure could lead to weariness and subsequently to heat cramps.
Be advised, the heat index considers values for conditions in shade and with a light breeze. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. The influence of weather is personal, differing among individuals based on variations in body mass, stature, and the degree of physical exertion. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.

Humidity

With an average relative humidity of 56%, August is the least humid month in Rijeka.

Rainfall

In Rijeka, in August, it is raining for 9 days, with typically 102mm (4.02") of accumulated precipitation. Throughout the year, there are 130.3 rainfall days, and 1552mm (61.1") of precipitation is accumulated.

Snowfall

April through November are months without snowfall.

Sea temperature

The month with the warmest seawater in Rijeka is August, with an average sea temperature of 24.9°C (76.8°F).
Note: For those not fond of cold temperatures, taking a swim at 24.9°C (76.8°F) may require consideration of the sunshine, wind, and ambient temperature. While wetsuits are not mandatory, they can enhance the experience.

Daylight

The average length of the day in August in Rijeka is 14h and 3min.
On the first day of August, sunrise is at 05:47 and sunset at 20:29. On the last day of the month, sunrise is at 06:23 and sunset at 19:41 CEST.

Sunshine

The average sunshine in August in Rijeka is 9h.

UV index

In August, the average daily maximum UV index in Rijeka is 7. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 7 in August transforms into the following instructions:
Ward off overexposure. Defence against solar harm is crucial. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Attention! The combination of sand and water reflections enhances UV ray intensity.