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Sea Temperature in Portoroz in October
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© Valentin Ukhov
Complete information on the sea temperature range in the Adriatic Sea in Portoroz in October. Historical daily data. Climate details for October. 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 October
13°C
MINIMUN
18.5°C
AVERAGE
24°C
MAXIMUM
Historical Data of Water Temperature in October in Portoroz
Water Temperature Chart for Adriatic Sea in Portoroz in October
Sea Temperature Table in Portoroz in October Over the Past Years
Day | 2024 | 2023 | 2022 | Average |
---|---|---|---|---|
Oct 1 | 22°C | 22°C | 21°C | 21.5°C |
Oct 2 | 22°C | 21°C | 20°C | 21.0°C |
Oct 3 | 22°C | 21°C | 20°C | 21.0°C |
Oct 4 | 22°C | 21°C | 20°C | 21.0°C |
Oct 5 | 22°C | 21°C | 21°C | 21.3°C |
Oct 6 | 22°C | 21°C | 20°C | 21.0°C |
Oct 7 | 21°C | 21°C | 20°C | 20.5°C |
Oct 8 | 21°C | 21°C | 20°C | 20.5°C |
Oct 9 | 21°C | 20°C | 20°C | 20.3°C |
Oct 10 | 21°C | 20°C | 20°C | 20.3°C |
Oct 11 | 21°C | 20°C | 19°C | 20.0°C |
Oct 12 | 21°C | 20°C | 19°C | 20.0°C |
Oct 13 | 20°C | 19°C | 19°C | 19.5°C |
Oct 14 | 19°C | 20°C | 19°C | 19.5°C |
Oct 15 | 19°C | 19°C | 19°C | 19.3°C |
Oct 16 | 19°C | 19°C | 19°C | 19.0°C |
Oct 17 | 19°C | 19°C | 19°C | 19.0°C |
Oct 18 | 18°C | 19°C | 19°C | 18.8°C |
Oct 19 | 18°C | 19°C | 19°C | 18.8°C |
Oct 20 | 18°C | 19°C | 19°C | 18.8°C |
Oct 21 | 18°C | 19°C | 19°C | 18.8°C |
Oct 22 | 18°C | 19°C | 19°C | 18.8°C |
Oct 23 | 18°C | 19°C | 19°C | 19.0°C |
Oct 24 | 17°C | 19°C | 19°C | 18.5°C |
Oct 25 | 18°C | 19°C | 19°C | 18.8°C |
Oct 26 | 18°C | 18°C | 19°C | 18.5°C |
Oct 27 | 17°C | 19°C | 19°C | 18.3°C |
Oct 28 | 17°C | 18°C | 19°C | 18.3°C |
Oct 29 | 17°C | 18°C | 19°C | 18.0°C |
Oct 30 | 17°C | 18°C | 18°C | 18.0°C |



Portoroz Climate and Swimming Opportunities in October
17°C
Average Day Air Temperature
12°C
Average Night Air Temperature
114 mm
Precipitation Amount per Month
10 days
Number of Rainy Days
11 hrs
Daylight
per Day
5 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 October is 17°C (63°F), while the nighttime average is 12°C (53°F). There are typically 10 rainy days during the month, with a total precipitation of 114 mm (4.5 inches). The daylight duration in October in Portoroz is 11 hours, with an average of 5 hours of sunshine per day. The average wind speed in October is 8 km/h (5 mph), and the humidity level is around 72%.
The water temperature in Portoroz in October ranges from 18°C to 21°C (64°F to 70°F). At the beginning of the month, the average temperature is around 21°C (70°F), shifting to 20°C (68°F) by mid-October and reaching 19°C (66°F) in the last ten days. Overall, the average sea temperature in Portoroz for October is 20°C (68°F). Ideal conditions for a refreshing swim, though some may still find it a bit cool.
Sea Temperature in October in Nearby Cities
Frequently Asked Questions About Water Temperatures in October in Portoroz
What is the sea temperature in Portoroz in October?
The water temperature in the Adriatic Sea in Portoroz in October ranges from 18°C to 21°C (64°F to 70°F).
Is it possible to swim in the Adriatic Sea in Portoroz in October?
The average sea temperature in Portoroz in October is 20°C (68°F), and the air temperature is 17°C (63°F), so ideal conditions for a refreshing swim, though some may still find it a bit cool.