Sea Temperature in Portoroz in January

Complete information on the sea temperature range in the Adriatic Sea in Portoroz in January. Historical daily data. Climate details for January. Tips on swimming conditions and beach relaxation in Portoroz. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Water Temperature Range in Portoroz in January

6°C

MINIMUN

10°C

AVERAGE

14°C

MAXIMUM

Historical Data of Water Temperature in January in Portoroz

Water Temperature Chart for Adriatic Sea in Portoroz in January

Sea Temperature Table in Portoroz in January Over the Past Years

Day	2024	2023	2022	Average
Jan 1	13°C	11°C	11°C	11.5°C
Jan 2	13°C	11°C	11°C	11.8°C
Jan 3	13°C	11°C	12°C	12.0°C
Jan 4	13°C	11°C	11°C	11.8°C
Jan 5	13°C	11°C	11°C	11.8°C
Jan 6	13°C	11°C	11°C	11.5°C
Jan 7	13°C	11°C	11°C	11.5°C
Jan 8	13°C	11°C	10°C	11.3°C
Jan 9	13°C	11°C	10°C	11.3°C
Jan 10	12°C	11°C	10°C	11.0°C
Jan 11	12°C	11°C	10°C	11.3°C
Jan 12	13°C	11°C	10°C	11.3°C
Jan 13	13°C	11°C	10°C	11.5°C
Jan 14	13°C	11°C	9°C	11.3°C
Jan 15	12°C	11°C	9°C	10.8°C
Jan 16	12°C	11°C	9°C	11.0°C
Jan 17	12°C	11°C	9°C	10.8°C
Jan 18	12°C	11°C	9°C	10.8°C
Jan 19	12°C	11°C	9°C	10.8°C
Jan 20	12°C	10°C	9°C	10.5°C
Jan 21	12°C	11°C	9°C	10.8°C
Jan 22	12°C	10°C	9°C	10.5°C
Jan 23	11°C	11°C	9°C	10.3°C
Jan 24	12°C	10°C	9°C	10.3°C
Jan 25	12°C	10°C	9°C	10.3°C
Jan 26	11°C	10°C	9°C	10.0°C
Jan 27	11°C	10°C	9°C	10.0°C
Jan 28	11°C	10°C	9°C	10.3°C
Jan 29	11°C	10°C	9°C	10.0°C
Jan 30	11°C	10°C	9°C	10.0°C

Portoroz Climate and Swimming Opportunities in January

7°C

Average Day Air Temperature

3°C

Average Night Air Temperature

61 mm

Precipitation Amount per Month

8 days

Number of Rainy Days

9 hrs

Daylight
per Day

3 hrs

Sunshine
per Day

8 km/h

Average Wind Speed

72%

Average
humidity

Portoroz lies within the Municipality of Piran in Slovenia. The average daytime temperature in Portoroz in January is 7°C (44°F), while the nighttime average is 3°C (37°F). There are typically eight rainy days during the month, with a total precipitation of 61 mm (2.4 inches). The daylight duration in January in Portoroz is 9 hours, with an average of 3 hours of sunshine per day. The average wind speed in January is 8 km/h (5 mph), and the humidity level is around 72%.

The water temperature in Portoroz in January ranges from 10°C to 12°C (50°F to 54°F). At the beginning of the month, the average temperature is around 12°C (54°F), shifting to 11°C (52°F) by mid-January and reaching 10°C (50°F) in the last ten days. Overall, the average sea temperature in Portoroz for January is 11°C (52°F). The water is still cold, but for short swims, it can be manageable. Warm clothes are necessary after swimming.

Sea Temperature in January in Nearby Cities

Frequently Asked Questions About Water Temperatures in January in Portoroz

What is the sea temperature in Portoroz in January?

The water temperature in the Adriatic Sea in Portoroz in January ranges from 10°C to 12°C (50°F to 54°F).

Is it possible to swim in the Adriatic Sea in Portoroz in January?

The average sea temperature in Portoroz in January is 11°C (52°F), and the air temperature is 7°C (44°F), so the water is still cold, but for short swims, it can be manageable. Warm clothes are necessary after swimming.