Opatija Weather in April
April in Opatija brings moderate temperatures, with highs of 15°C (59°F) and nights dropping to 8°C (46°F). Rainfall is on the higher side this month, averaging around 139 mm (5.5 in), so keep a rain jacket handy.
Rainfall in Opatija in April
Historically, the month has about 16 days of rain, averaging 139 mm (5.5 in) in total. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Opatija in April
Daytime temperatures in Opatija reach 15°C (59°F) in April, dropping to 8°C (46°F) at night. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 8°C (46°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 April
The month experiences a moderate amount of sunlight, with 173 hours of sunshine. This provides a nice balance between sunshine and clouds.
Average water temperature in April
With water at 13°C (55°F), it's on the cooler side. Keen swimmers won't be put off, but those who prefer warm water may find it less enjoyable.If you prefer dry days with pleasant temperatures, May, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 April
Min Temperature
8°C (46°F)
Max Temperature
15°C (59°F)
Water Temperature
13°C (55°F) *
Chance of Rain
53%
Precipitation
139 mm (5.5 in)
Rainy days
16 days
Humidity
62% *
Sunshine
173 hours *
Percentage Sunshine
47% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Opatija typically stay consistent throughout April, with daily highs averaging around 15°C (59°F). Nights are cool, with lows typically ranging from 7°C (45°F) to 10°C (50°F).
Average temperatures in April
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 April
Historical weather for Opatija in April
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 April
Our historical data for Opatija spans 1976 to 2026, revealing these weather extremes.
- The hottest April day on record in Opatija reached 28°C (82°F) (April 30, 2024).
- Opatija experienced its chilliest April day on April 13, 1986, reaching only 6°C (43°F).
- The lowest overnight temperature recorded in April was -7°C (19°F) (April 8, 2003).
Best Places in Croatia in April
Find out more about the weather in Croatia and which places have the best travel conditions in this month. See all of Croatia in April →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Opatija in April
The weather can swing between comfortable and chilly in April, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Expect heavy rainfall, so bring good rain protection and waterproof bags. With water temperatures around 13°C (55°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Bring sunglasses since you'll have some sunny periods throughout the monthWhat To Do in Opatija in April
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.
