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Istria
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Istria Weather, Climate and Best Time to Visit
Data source：Meteostat
Update date：2025-09
Istria year round climate
- Spring (March–May): Average 8.2–16.9°C, mild climate with relatively high rainfall, especially in May. Common activities: Explore the Istrian countryside, enjoy local food and wine. Recommended clothing: Light jacket, comfortable trousers or skirt, comfortable shoes.
- Summer (June–August): Average 21.5–24.5°C, hot and dry with abundant sunshine. Common activities: Swimming, sunbathing, water sports, visiting historic towns. Recommended clothing: Light and breathable clothing, hat, sunglasses, sunscreen.
- Autumn (September–November): Average 18.2–8.3°C, pleasant climate, with the highest rainfall in September. Common activities: Stroll through vineyards, wine tasting, enjoy the autumnal countryside, visit museums and art galleries. Recommended clothing: Comfortable long-sleeved shirts, light jacket, comfortable shoes.
- Winter (December–February): Average 6.1–4.2°C, cold and humid climate with occasional rainfall. Common activities: Explore indoor attractions, enjoy local cuisine, indulge in comfortable indoor activities. Recommended clothing: Warm jacket, sweater, scarf, hat, gloves.
Istria climatological average
Annual average temperature: approx. 13.7°C / Annual rainfall: approx. 1204 mm / Summer humidity: 60%–70% / Rainiest month: September
Istria monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
4.2°C
75
February
5.8°C
52.2
March
8.2°C
73.2
April
11°C
71.8
May
16.9°C
128.7
June
21.5°C
84.9
July
24.5°C
56.2
August
24.2°C
108.9
September
18.2°C
179.8
October
15.4°C
134.4
November
8.3°C
119.5
December
6.1°C
119.9
Istria weather for the next seven days
5/15
Friday
Moderate rain
15.9°C/13.4°C
5/16
Saturday
Heavy rain
12.3°C/11°C
5/17
Sunday
Patchy rain nearby
16.5°C/11.1°C
5/18
Monday
Patchy rain nearby
17.7°C/11.9°C
5/19
Tuesday
Patchy rain nearby
19°C/12.5°C
5/20
Wednesday
Sunny
20.2°C/13.9°C
5/21
Thursday
Sunny
20.7°C/14.6°C
