Opatija
Croatia
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Opatija, Croatia

April in Opatija, Croatia, is a moderate spring month, with average temperature ranging between max 13°C (55.4°F) and min 4°C (39.2°F).

Temperature

In Opatija, the average high-temperature in April marginally rises, from a chilly 9°C (48.2°F) in March, to a moderate 13°C (55.4°F). In April, the average low-temperature is 4°C (39.2°F).

Rainfall

In Opatija, during April, the rain falls for 16 days and regularly aggregates up to 118mm (4.65") of precipitation. In Opatija, during the entire year, the rain falls for 170 days and collects up to 1471mm (57.91") of precipitation.

Sea temperature

In Opatija, the average seawater temperature in April is 13.7°C (56.7°F).
Note: Swimming in 13.7°C (56.7°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

The average length of the day in April is 13.5h.

Sunshine

In April, the average sunshine in Opatija is 6h.

UV index

In Opatija, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in April in Opatija?

The average high-temperature, in April, in Opatija, Croatia, is 13°C (55.4°F), while the average low-temperature is 4°C (39.2°F).

How much does it rain in Opatija in April?

In Opatija, in April, it is raining for 16 days, with typically 118mm (4.65") of accumulated precipitation.

How cold is the water in April in Opatija?

In Opatija, Croatia, in April, the average water temperature is 13.7°C (56.7°F). Swimming in 13.7°C (56.7°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the average length of the day in April in Opatija?

In Opatija, the average length of the day in April is 13.5h.

How long on average sun shines in April in Opatija?

In Opatija, Croatia, the average sunshine in April is 6h.

What is the UV index intensity in April in Opatija?

In April, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in April - Opatija, Croatia
  • Average high temperature in April: 13°C

Warmest months (with the highest average high temperature) are July and August (25°C).
Months with the lowest average high temperature are January and February (6°C).

  • Average low temperature in April: 4°C

Months with the highest average low temperature are July and August (13°C).
The coldest month (with the lowest average low temperature) is January (-3°C).

Average rainfall in April - Opatija, Croatia
  • Average rainfall in April: 118mm

The wettest month (with the highest rainfall) is November (178mm).
The driest month (with the lowest rainfall) is July (88mm).

Average rainfall days in April - Opatija, Croatia
  • Average rainfall days in April: 16 days

Months with the highest number of rainy days are April, May and June (16 days).
Months with the lowest number of rainy days are February, July, August, September and October (13 days).

Average sea temperature in April - Opatija, Croatia
  • Average sea temperature in April: 13.7°C

The best month for swimming (with the highest average sea temperature) is August (24.9°C).
The coldest month (with the lowest average sea temperature) is February (10.7°C).

Average daylight in April / Average sunshine in April - Opatija, Croatia
  • Average daylight in April: 13.5h

The month with the longest days is June (Average daylight: 15.6h).
The month with shortest days is December (Average daylight: 8.8h).

  • Average sunshine in April: 6h

The month with most sunshine is July (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 3h).

Average UV index in April - Opatija, Croatia
  • Average UV index in April: 5

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January and December (UV index 1).