April weather - Spring 2024

Weather in April
Frequently asked questions
Average temperature in April
Average pressure in April
Average wind speed in April
Average humidity in April
Average rainfall in April
Average rainfall days in April
Average snowfall in April
Average snowfall days in April
Average sea temperature in April
Average daylight in April
Average sunshine in April
Average sunshine days in April
Average UV index in April
Average cloud cover in April
Average visibility in April

The boat-laden water channel in the heart of Trieste, located in Friuli Venezia Giulia, Italy, overlooking the busy Ponte Rosso city square

Weather in April

April in Trieste welcomes the full bloom of spring with a significant leap in temperature and longer daylight hours. The weather tends towards the warmer side as the high averages 15.8°C (60.4°F) and the low around 8.5°C (47.3°F). April is generally a comfortable time to visit and explore Trieste, with multiplicity of clear, sunny days and a relative decrease in humidity. Even though showers can still be expected, their frequency is not as high as in previous months.

Temperature

Trieste observes a slight ascent in average high-temperatures during April, adjusting from a fresh 11.1°C (52°F) in March to a refreshing 15.8°C (60.4°F). Trieste records a consistent low-temperature of 8.5°C (47.3°F) during April nights.

Humidity

In Trieste, the average relative humidity in April is 72%.

Rainfall

In Trieste, during April, the rain falls for 15.5 days and regularly aggregates up to 61mm (2.4") of precipitation. In Trieste, during the entire year, the rain falls for 177.7 days and collects up to 1019mm (40.12") of precipitation.

Snowfall

In Trieste, snow does not fall in April through November.

Sea temperature

In Trieste, the average seawater temperature in April is 13.1°C (55.6°F).
Note: With an efficient thermal swimsuit, one can navigate 13.1°C (55.6°F) even if it's colder than 10°C (50°F); otherwise, rapid cold shock and breathlessness might set in. Barely wading at 13°C (55.4°F) feels chilly.

Daylight

The average length of the day in April in Trieste is 13h and 33min.
On the first day of the month, sunrise is at 06:43 and sunset at 19:33. On the last day of April, sunrise is at 05:53 and sunset at 20:10 CEST.

Sunshine

The average sunshine in April is 9.9h.

UV index

In Trieste, the average daily maximum UV index in April is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 4 during April translates into the following guidance:
Ensure safety - Sun damage prevention is strongly urged. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.

Updated: Jan 30, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average April temperature in Trieste?

The high-temperature in Trieste during April is 15.8°C (60.4°F) and the low-temperature is 8.5°C (47.3°F).

What is the average humidity in April in Trieste?

In Trieste, the average relative humidity in April is 72%.

How many days does it rain in April in Trieste?

In Trieste, in April, during 15.5 rainfall days, 61mm (2.4") of precipitation is typically accumulated.

When it does not snow in Trieste?

In Trieste, snow does not fall in April through November.

Does it snow in Trieste in April?

In April, in Trieste, Italy, it doesn't snow. March is the latest month when it typically snows.

What is the water temperature in April in Trieste?

In April, the average sea temperature in Trieste is 13.1°C (55.6°F). Swimming in 13.1°C (55.6°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

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

The average day length in April in Trieste, Italy, is 13h and 33min.

When is the sunrise / sunset in April in Trieste?

In April, on the first day of the month, sunrise is at 06:43 and sunset at 19:33. On the last day of the month, in Trieste, Italy, sunrise is at 05:53 and sunset at 20:10 CEST.

How many hours of sunshine does Trieste have in April?

The average sunshine duration in April in Trieste, Italy, is 9.9h.

How high is the UV index in April in Trieste?

In Trieste, the average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M April M J J A S O N D

Mar

April

May

Average high temperature

11.1°C 52°F

15.8°C 60.4°F

19.4°C 66.9°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

12.2km/h 7.6mph

10.4km/h 6.5mph

9.9km/h 6.2mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

0.6

Average sea temperature

Average daylight

Average sunshine

Average sunshine days

15.9

12.5

6.6

Average UV index

Average cloud cover

Average visibility

Average temperature in April
Trieste, Italy

Average high temperature in April: 15.8°C

The warmest month (with the highest average high temperature) is August (27.2°C).
The month with the lowest average high temperature is January (5.9°C).

Average low temperature in April: 8.5°C

The month with the highest average low temperature is August (18.1°C).
The coldest month (with the lowest average low temperature) is January (1.6°C).

Average pressure in April
Trieste, Italy

Average pressure in April: 1015.1mbar

The month with the highest atmospheric pressure is December (1019.8mbar).
The months with the lowest atmospheric pressure are May, June and July (1014.7mbar).

Average wind speed in April
Trieste, Italy

Average wind speed in April: 9.6km/h

The windiest month (with the highest average wind speed) is February (11.7km/h).
The calmest months (with the lowest average wind speed) are June, July and August (8.6km/h).

Average humidity in April
Trieste, Italy

Average humidity in April: 72%

The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is August (68%).

Average rainfall in April
Trieste, Italy

Average rainfall in April: 61mm

The wettest month (with the highest rainfall) is November (129mm).
The driest month (with the least rainfall) is January (54mm).

Average rainfall days in April
Trieste, Italy

Average rainfall days in April: 15.5 days

The month with the highest number of rainy days is May (21.3 days).
The month with the least rainy days is January (10.9 days).

Average snowfall in April
Trieste, Italy

Average snowfall in April: 0mm

The month with the highest snowfall is February (14mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

Average snowfall days in April
Trieste, Italy

Average snowfall days in April: 0 days

The month with the highest number of snowfall days is January (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

Average sea temperature in April
Trieste, Italy

Average sea temperature in April: 13.1°C

The best months for swimming (with the highest average sea temperature) are July and August (24.8°C).
The coldest month (with the lowest average sea temperature) is February (9.3°C).

Average daylight in April /
Average sunshine in April
Trieste, Italy

Average daylight in April: 13h and 3min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

Average sunshine in April: 9h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 30min).
The months with the least sunshine are February and November (Average sunshine: 5h and 0min).

Average sunshine days in April
Trieste, Italy

Average sunshine days in April: 12.5 days

The month with the most sunshine days is January (17 days).
The month with the least sunshine days is May (6.6 days).

Average UV index in April
Trieste, Italy

Average UV index in April: 4

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).

Average cloud cover in April
Trieste, Italy

Average cloud cover in April: 35

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 19).

Average visibility in April
Trieste, Italy

Average visibility in April: 10km

The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).

April weather forecast
Trieste, Italy

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