Piran — Water Temperature in January

Water Temperature Range

6°C

minimum

10°C

average

14°C

maximum

Get instant access to real-time water temperatures for this and all other locations with our iOS and Android apps.

Water Temperature Chart for Month

The chart shows the average daily water temperature for each day of the month based on historical data.

Table of Water Temperatures by Day of the Month for Previous Years

Day	2026	2025	2024	2023
JAN 1	12°C	12°C	11°C	12°C
JAN 2	12°C	11°C	13°C	12°C
JAN 3	12°C	11°C	13°C	12°C
JAN 4	12°C	12°C	13°C	11°C
JAN 5	12°C	11°C	13°C	11°C
JAN 6	12°C	11°C	13°C	11°C
JAN 7	12°C	11°C	13°C	11°C
JAN 8	11°C	11°C	13°C	11°C
JAN 9	11°C	11°C	13°C	10°C
JAN 10	11°C	11°C	13°C	10°C
JAN 11	11°C	11°C	13°C	10°C
JAN 12	11°C	11°C	12°C	10°C
JAN 13	11°C	11°C	13°C	10°C
JAN 14	11°C	11°C	13°C	9°C
JAN 15	11°C	11°C	12°C	9°C
JAN 16	11°C	11°C	13°C	9°C
JAN 17	11°C	11°C	12°C	9°C
JAN 18	11°C	11°C	12°C	9°C
JAN 19	10°C	11°C	12°C	8°C
JAN 20	10°C	10°C	12°C	8°C
JAN 21	10°C	10°C	12°C	8°C
JAN 22	10°C	11°C	12°C	8°C
JAN 23	11°C	10°C	12°C	8°C
JAN 24	10°C	10°C	12°C	7°C
JAN 25	10°C	10°C	11°C	7°C
JAN 26	10°C	10°C	12°C	7°C
JAN 27	10°C	10°C	11°C	7°C
JAN 28	10°C	10°C	11°C	7°C
JAN 29	10°C	10°C	11°C	6°C
JAN 30	9°C	10°C	11°C	6°C
JAN 31	10°C	10°C	11°C	6°C

January: Climate and Swimming Opportunities

Average Night Air Temperature

3°C

Average Day Air Temperature

7°C

Precipitation Amount per Month

61 mm

Number of Rainy Days

Daylight per Day

9 hrs

Sunshine per Day

3 hrs

Average Wind Speed

8 km/h

Average Humidity

72%

At such water and air temperatures, swimming is extremely harsh and generally not enjoyable. The risk of rapid chilling is high, so most people avoid entering the water.