January weather forecast
Opatija, Croatia

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Weather in January

The weather in Opatija begins the year with a blend of cool temperatures and high humidity. Rainfall is relatively steady and less intense compared to what will be seen in the coming months. The maritime climate maintains the sea temperature at a fairly consistent level, providing a buffering effect on the local weather. The brisk winds and relatively low UV index are notable features of the January climate. Notably, the average high stands at 8.5°C (47.3°F) and the average low dips to 5.6°C (42.1°F), which can feel chillier due to 73% average humidity.

Temperature

In Opatija, Croatia, January is the month with the lowest recorded average temperatures, measuring a high of 8.5°C (47.3°F) and a low of 5.6°C (42.1°F).

Humidity

In Opatija, Croatia, the average relative humidity in January is 73%.

Rainfall

The month with the least rainfall is January, when the rain falls for 11.4 days and typically collects 35mm (1.38") of precipitation.

Snowfall

January, April through November are months without snowfall in Opatija.

Sea temperature

In Opatija, the average seawater temperature in January is 11.4°C (52.5°F).
Note: With an efficient thermal swimsuit, one can navigate 11.4°C (52.5°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 January is 9h and 12min.
On the first day of January in Opatija, sunrise is at 07:42 and sunset at 16:30. On the last day of the month, sunrise is at 07:24 and sunset at 17:07 CET.

Sunshine

January and December, with an average of 5.3h of sunshine, are months with the least sunshine in Opatija.

UV index

January is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are the coldest months in Opatija?

January stands out as Opatija's coldest month, with temperatures ranging between an average high of 8.5°C (47.3°F) and a low of 5.6°C (42.1°F).

What is the usual temperature for Opatija in January?

In January, the average high-temperature and low-temperature are 8.5°C (47.3°F) and 5.6°C (42.1°F) respectively.

What is the average humidity in January in Opatija?

In Opatija, the average relative humidity in January is 73%.

What is the driest month in Opatija?

January is the month with the least rainfall. Rain falls for 11.4 days and accumulates 35mm (1.38") of precipitation.

How much does it rain in Opatija in January?

In January, in Opatija, the rain falls for 11.4 days. Throughout January, 35mm (1.38") of precipitation is accumulated.

When it does not snow in Opatija?

In Opatija, snow does not fall in January, April through November.

Does it snow in Opatija in January?

In January, it doesn't snow. December is the latest month when it typically snows.

What is the sea water temperature in January in Opatija?

In Opatija, in January, the average water temperature is 11.4°C (52.5°F). Swimming in 11.4°C (52.5°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 January in Opatija?

The average day length in January is 9h and 12min.

When is the sunrise / sunset in January in Opatija?

In January, on the first day of the month, sunrise is at 07:42 and sunset at 16:30. On the last day of the month, in Opatija, Croatia, sunrise is at 07:24 and sunset at 17:07 CET.

What is the month with the least sunshine in Opatija?

January and December, with an average of 5.3h of sunshine, are months with the least sunshine in Opatija.

How long on average sun shines in January in Opatija?

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

What is the month with the lowest UV index in Opatija?

The month with the lowest UV index in Opatija is January, with an average maximum UV index of 2.

How high is the UV index in January in Opatija?

In Opatija, Croatia, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
Dec
January
Feb
Average high temperature
10°C 50°F
8.5°C 47.3°F
9°C 48.2°F
Average low temperature
7.2°C 45°F
5.6°C 42.1°F
6°C 42.8°F
Average pressure
1019.5mbar 30.11inHg
1017.6mbar 30.05inHg
1015.9mbar 30inHg
Average wind speed
13.3km/h 8.3mph
13.9km/h 8.6mph
16.7km/h 10.4mph
Average max. wind speed
14.5km/h 9mph
14.7km/h 9.1mph
17.8km/h 11.1mph
Average wind speed gusts
19.3km/h 12mph
20km/h 12.4mph
23.9km/h 14.9mph
Average humidity
73%
73%
73%
Average rainfall
59mm 2.32"
35mm 1.38"
53mm 2.09"
Average rainfall days
12.2
11.4
11.8
Average snowfall
1mm 0.04"
0mm 0"
1mm 0.04"
Average snowfall days
0.3
0.1
0.5
Average sea temperature
14.3°C 57.7°F
11.4°C 52.5°F
10.7°C 51.3°F
Average daylight
8h 5min
9h 1min
10h 2min
Average sunshine
5h 2min
5h 2min
5h 2min
Average sunshine days
16.1
17.3
15.4
Average UV index
3
2
3
Average cloud cover
43%
45%
45%
Average visibility
10km 6.2mi
10km 6.2mi
10km 6.2mi

Average temperature in January
Opatija, Croatia

Average temperature in January - Opatija, Croatia
  • Average high temperature in January: 8.5°C

The warmest month (with the highest average high temperature) is August (26.9°C).
The month with the lowest average high temperature is January (8.5°C).

  • Average low temperature in January: 5.6°C

The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is January (5.6°C).

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Average pressure in January
Opatija, Croatia

Average pressure in January - Opatija, Croatia
  • Average pressure in January: 1017.6mbar

The month with the highest atmospheric pressure is December (1019.5mbar).
The month with the lowest atmospheric pressure is July (1014.3mbar).

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Average wind speed in January
Opatija, Croatia

Average wind speed in January - Opatija, Croatia
  • Average wind speed in January: 13.9km/h

The windiest month (with the highest average wind speed) is February (16.7km/h).
The calmest month (with the lowest average wind speed) is July (10.9km/h).

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Average humidity in January
Opatija, Croatia

Average humidity in January - Opatija, Croatia
  • Average humidity in January: 73%

The month with the highest relative humidity is November (76%).
The month with the lowest relative humidity is August (66%).

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Average rainfall in January
Opatija, Croatia

Average rainfall in January - Opatija, Croatia
  • Average rainfall in January: 35mm

The wettest month (with the highest rainfall) is November (89mm).
The driest month (with the least rainfall) is January (35mm).

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Average rainfall days in January
Opatija, Croatia

Average rainfall days in January - Opatija, Croatia
  • Average rainfall days in January: 11.4 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is August (11.1 days).

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Average snowfall in January
Opatija, Croatia

Average snowfall in January - Opatija, Croatia
  • Average snowfall in January: 0mm

The months with the highest snowfall are February, March and December (1mm).
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in January
Opatija, Croatia

Average snowfall days in January - Opatija, Croatia
  • Average snowfall days in January: 0.1 days

The month with the highest number of snowfall days is February (0.5 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
Opatija, Croatia

Average sea temperature in January - Opatija, Croatia
  • Average sea temperature in January: 11.4°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).

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Average daylight in January /
Average sunshine in January
Opatija, Croatia

Average daylight in January / Average sunshine in January - Opatija, Croatia
  • 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 months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 18min).

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Average sunshine days in January
Opatija, Croatia

Average sunshine days in January - Opatija, Croatia
  • Average sunshine days in January: 17.3 days

The month with the most sunshine days is March (17.5 days).
The month with the least sunshine days is May (9.9 days).

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Average UV index in January
Opatija, Croatia

Average UV index in January - Opatija, Croatia
  • Average UV index in January: 2

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in January
Opatija, Croatia

Average cloud cover in January - Opatija, Croatia
  • Average cloud cover in January: 45

The months with the most cloud cover are January and February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 16).

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Average visibility in January
Opatija, Croatia

Average visibility in January - Opatija, Croatia
  • Average visibility in January: 10km

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

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Opatija, Croatia

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