Rijeka Weather in September

Rijeka in September averages 21°C (70°F) during the day and 13°C (55°F) at night. September is part of the rainy season, so frequent rainfall is typical.

Rainfall in Rijeka in September

Rijeka is in the rainy season in September, with rain on around 13 days and an average of 197 mm (7.8 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours.

Temperature in Rijeka in September

September in Rijeka brings pleasant temperatures, with highs of 21°C (70°F) and nights around 13°C (55°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Rijeka in September

Expect sunny days throughout the month, with an estimated 202 hours of sunshine. Despite being the rainy season, it could still be a nice time to visit. Rain often arrives later in the day, keeping most of the days sunny.

Average water temperature in September

The water temperature is 24°C (75°F), which most people find very comfortable. A good month for swimming and water sports.

Should you favor a climate that's both dry and comfortably warm, July typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.