January weather forecast
Trieste, Italy

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

Trieste witnesses the extension of the chilling European winter in January, bringing cold temperature extremes and gloomy days. Temperatures dip to a low of 1.6°C (34.9°F) while the high averages only around 5.9°C (42.6°F). Aside from the biting cold, January is also characterized by moderate-to-high humidity and short daylight hours which add to the overall sense of winter. Travelers can expect to dress heavily for winter with layers to tackle the biting cold and the precipitation, which often takes the form of both rain and snow.

Temperature

The month of January sees the lowest average temperatures, reaching 5.9°C (42.6°F) at the peak and 1.6°C (34.9°F) at the low.

Humidity

The average relative humidity in January is 79%.

Rainfall

The month with the least rainfall is January, when the rain falls for 10.9 days and typically collects 54mm (2.13") of precipitation.

Snowfall

January through March and December are months with snowfall. In January, it is snowing for 1.2 days. Throughout January, 10mm (0.39") of snow is accumulated. Throughout the year, in Trieste, there are 3.5 snowfall days, and 39mm (1.54") of snow is accumulated.

Sea temperature

In Trieste, Italy, the average seawater temperature in January is 10.3°C (50.5°F).
Note: Swimming in 10.3°C (50.5°F) can be lethal. Merely spending a few minutes in 13°C (55.4°F) waters feels harsh, and venturing below 10°C (50°F) might disrupt breathing control and bring about cold shock, contingent on individual resilience.

Daylight

In January, the average length of the day in Trieste is 9h and 10min.
On the first day of January in Trieste, Italy, sunrise is at 07:45 and sunset at 16:31. On the last day of the month, sunrise is at 07:27 and sunset at 17:08 CET.

Sunshine

The average sunshine in January is 5.3h.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 in January transforms into the following instructions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. When the Sun is at its strongest around midday, find shade and limit exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What is the coldest month in Trieste?

Trieste's January weather, with an average high temperature of 5.9°C (42.6°F) and an average low temperature of 1.6°C (34.9°F), tends to be the coldest of the year.

Is it cold in Trieste during January?

The average high-temperature, in January, in Trieste, is 5.9°C (42.6°F), while the average low-temperature is 1.6°C (34.9°F).

What is the average humidity in January in Trieste?

In January, the average relative humidity in Trieste is 79%.

What is the driest month in Trieste?

January is the month with the least rainfall. Rain falls for 10.9 days and accumulates 54mm (2.13") of precipitation.

How many days does it rain in January in Trieste?

In Trieste, in January, it is raining for 10.9 days, with typically 54mm (2.13") of accumulated precipitation.

How many days does it snow in January in Trieste?

In Trieste, Italy, in January, snow falls for 1.2 days, with typically accumulated 10mm (0.39") of snow.

What is the sea water temperature in January in Trieste?

In January, the average sea temperature is 10.3°C (50.5°F). At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

How many hours of daylight does Trieste have in January?

The average day length in January is 9h and 10min.

When is the sunrise / sunset in January in Trieste?

In January, on the first day of the month, sunrise is at 07:45 and sunset at 16:31. On the last day of the month, sunrise is at 07:27 and sunset at 17:08 CET.

How long on average sun shines in January in Trieste?

In Trieste, the average sunshine duration in January is 5.3h.

What are the months with the lowest UV index in Trieste?

The months with the lowest UV index in Trieste, Italy, are January, November and December, with an average maximum UV index of 2.

What is the UV index reading in January in Trieste?

In Trieste, Italy, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Trieste, Italy

Average temperature in January - Trieste, Italy
  • Average high temperature in January: 5.9°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 January: 1.6°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).

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Average pressure in January
Trieste, Italy

Average pressure in January - Trieste, Italy
  • Average pressure in January: 1018mbar

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).

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Average wind speed in January
Trieste, Italy

Average wind speed in January - Trieste, Italy
  • Average wind speed in January: 9.8km/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).

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Average humidity in January
Trieste, Italy

Average humidity in January - Trieste, Italy
  • Average humidity in January: 79%

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

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Average rainfall in January
Trieste, Italy

Average rainfall in January - Trieste, Italy
  • Average rainfall in January: 54mm

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

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Average rainfall days in January
Trieste, Italy

Average rainfall days in January - Trieste, Italy
  • Average rainfall days in January: 10.9 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).

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Average snowfall in January
Trieste, Italy

Average snowfall in January - Trieste, Italy
  • Average snowfall in January: 10mm

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).

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Average snowfall days in January
Trieste, Italy

Average snowfall days in January - Trieste, Italy
  • Average snowfall days in January: 1.2 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).

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Average sea temperature in January
Trieste, Italy

Average sea temperature in January - Trieste, Italy
  • Average sea temperature in January: 10.3°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).

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

Average daylight in January / Average sunshine in January - Trieste, Italy
  • Average daylight in January: 9h and 1min

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 January: 5h and 2min

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).

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Average sunshine days in January
Trieste, Italy

Average sunshine days in January - Trieste, Italy
  • Average sunshine days in January: 17 days

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

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Average UV index in January
Trieste, Italy

Average UV index in January - Trieste, Italy
  • Average UV index in January: 2

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).

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Average cloud cover in January
Trieste, Italy

Average cloud cover in January - Trieste, Italy
  • Average cloud cover in January: 45

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

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Average visibility in January
Trieste, Italy

Average visibility in January - Trieste, Italy
  • Average visibility in January: 9km

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).

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Trieste, Italy

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