Opatija Weather in October
With daytime temperatures of 17°C (63°F) and nighttime lows of 10°C (50°F), October in Opatija brings moderate temperatures during the day. Do keep in mind that October is part of the rainy season, with frequent and often heavy rainfall.
Rainfall in Opatija in October
Opatija is in the rainy season in October, with rain on around 13 days and an average of 240 mm (9.4 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours.
Temperature in Opatija in October
If you're visiting Opatija in October, expect highs of 17°C (63°F) and overnight lows around 10°C (50°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. At 10°C (50°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Opatija in October
You can expect a moderate amount of sunlight, with approximately 163 hours. Even though this month is part of the wet season, you can still see the sun occasionally.
Average water temperature in October
With water at 20°C (68°F), swimming is comfortable for most people. It feels refreshing rather than cold, though it depends a bit on personal preference.October in Opatija has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Croatia, check out our Opatija's climate page.
Opatija Temperature in October
Min Temperature
10°C (50°F)
Max Temperature
17°C (63°F)
Water Temperature
20°C (68°F) *
Chance of Rain
43%
Precipitation
240 mm (9.4 in)
Rainy days
13 days
Humidity
66% *
Sunshine
163 hours *
Percentage Sunshine
51% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Opatija typically drop from around 21°C (70°F) at the start of October to approximately 17°C (63°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 14°C (57°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather for Opatija in October
Browse day-by-day weather records for Opatija spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Opatija historical weather extremes in October
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Opatija.
- On October 2, 2011, temperatures climbed to 28°C (82°F), marking the warmest October day on record.
- Opatija experienced its chilliest October day on October 28, 1997, reaching only 7°C (45°F).
- Nighttime temperatures dropped to -1°C (30°F) on October 14, 1992, marking the coldest October night on record.
Best Places in Croatia in October
Find out more about the weather in Croatia and which places have the best travel conditions in this month. See all of Croatia in October →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Opatija in October
Comfortable temperatures call for an easy wardrobe in October. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. Expect water temperatures of around 20°C (68°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Opatija in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Croatia, check out our Opatija's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Opatija climate overview or explore weather in Croatia.
