VanSky

Slovenia Portorož

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Weather and VanSky index

Portorož, Slovenia — weather and VanSky index

Village · Piran, Slovenia

12°

Clear day 13° · night 11°

Strong gusts (55 km/h) — do not open the awning, retract it if already out.

Wind 30 km/h Precip 0.0 mm Feels like 8° Humidity 57% Sunrise 06:44 Sunset 16:52 Solar 1.0 kWh Dew point 4° Air AQI 24

VanSky Indextravel comfort how it works

Today 66/100 Comfortable

Week 62/100 Comfortable

Index by day- - - Week 62

66today 66mo 67tu 75we 68th 69fr 50sa

A good week for a trip Comfortable days: 6 of 7. Low point: sa 7 Nov (50, clear).

Portorož this week

Portorož: the VanSky index for 1 Nov – 7 Nov is 62 out of 100, “Comfortable”.
Comfortable days: 6 of 7.
Low point: sa 7 Nov (50, clear).
This week it ranks No. 4 in Slovenia.
Today: 66 out of 100 (comfortable).
Forecast updated 31 Oct, 23:09 UTC.

Daily forecast

The week is 2.7 °C cooler than normal for these dates · tap a day for details

80+ ideal 60–79 comfortable 40–59 acceptable 20–39 challenging 0–19 extreme

00:00 12° Clear 71 0.0 mm

03:00 11° Partly cloudy 69 0.0 mm

06:00 11° Cloudy 69 0.0 mm

09:00 11° Cloudy 69 0.0 mm

12:00 13° Partly cloudy 65 0.0 mm

15:00 13° Partly cloudy 67 0.0 mm

18:00 12° Partly cloudy 66 0.0 mm

21:00 11° Cloudy 65 0.0 mm

Index 66 · comfortable — what it is made of Weighted 66, adjustments +0 (night, extremes, sea, air) → 66 · how it works

Thermal comfort 35% 52

Sunshine 25% 56

Precipitation 25% 93

Wind 15% 70

Portorož on map

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Weather and index by day of year

2021–2025 archive

1 November 18° / 16°

water 18°

Rain is common Rain or snow on 20 of 35 archive days

November · average days

9 clear

6 partly cloudy

4 overcast

11 with rain or snow

≈ kWh

18° / 16°

day night

Best time to visit May Within 5 points of the highest-scoring month

This week · daily average

66 vs usual 72 −6

Daytime average 14° · usual 17° −3°

6 worse than usual for these dates. Tiles: the forecast next to the usual weather for that date — sky, day/night temperature, index; the difference below.

Today 1 Nov

forecast 13°/11° 66

usual 18°/16° 66

≈ −5°

mo 2 Nov

forecast 14°/11° 66

usual 18°/15° 66

≈ −4°

tu 3 Nov

forecast 14°/11° 67

usual 17°/15° 68

≈ −3°

we 4 Nov

forecast 15°/11° 75

usual 17°/14° 73

≈ −2°

th 5 Nov

forecast 15°/2° 68

usual 17°/14° 74

▼ 6 −2°

fr 6 Nov

forecast 15°/0° 69

usual 16°/14° 77

▼ 8 −1°

sa 7 Nov

forecast 14°/-0° 50

usual 16°/13° 77

▼ 27 −2°

Climate: ERA5, Copernicus Climate Change Service (C3S).

Where the week is better

1 Nov – 7 Nov · weekly average

#	City	Index
1	Koper 14° / 8° no rain 0.9 kWh 19°	67
2	Nova Gorica 14° / 5° no rain 0.8 kWh	67
3	Piran 14° / 7° no rain 1.0 kWh 20°	63
4	Portorož 14° / 7° no rain 1.0 kWh	62
5	Izola 14° / 6° no rain 1.0 kWh 19°	59
6	Bovec 10° / 5° 1 day of rain 0.9 kWh	56
7	Kranj 9° / 2° 1 day of rain 0.7 kWh	51

#	City	Index by day	Index
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City	Index by day	Index
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City	Index by day	Index
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All cities: Slovenia

Frequently Asked Questions

The weekly VanSky index for Portorož is 62 out of 100. It is the average of the daily scores, adjusted for swings in the weather: the more uneven the week, the lower the score. Above 60 means comfortable conditions for staying, below 40 means it is worth looking elsewhere. The 7-day forecast is further up this page.

Today a 500 W panel setup will produce about 1.0 kWh in Portorož. The estimate uses the cloud forecast and the length of daylight. Set your own panel power with the “My panels” control at the top of the page and the figures will update.

The daily score for Portorož combines thermal comfort (temperature and humidity) at 35%, sunshine at 25%, precipitation at 25% and wind at 15%. Frost, storms, extreme heat or heavy rain pull the day's score down sharply. The weekly score is the daily average, adjusted for swings in the weather.

VanSky Index

A weather comfort index for travel: a 0–100 score. Recalculated daily from live weather data — temperature, rainfall, wind and sun.

80–100Ideal

60–79Comfortable

40–59Acceptable

20–39Challenging

0–19Extreme

How it's calculated:

Thermal comfort 35% — temperature + humidity

Sunshine 25% — panel charge, mood; in heat the sun is no longer a bonus

Precipitation 25% — rain → muddy ground

Wind 15% — awning, driving, noise

Extremes override all: frost, heat, storm, downpour

Heat counts by feels-like temperature: at 32°+ the score can’t reach “Comfortable”, muggy nights lower it further

A dangerous day drags the week down: a storm or downpour in the forecast keeps the week from being “Comfortable”

Bonus: warm sea, high panel output

Data: Open-Meteo · Updated several times a day

VanSky index for Portorož, Slovenia — 62 out of 100 (Comfortable). Decide in seconds: temperature, precipitation, wind and solar output. Data refreshed several times a day from real weather observations. Forecast updated 31 Oct, 23:09 UTC.