Measurements:
°C
°F
CURRENT WEATHER
01:59
Istria
52°F
W 6 mph
Feels like: 50°F
Precip: 0%
World Resorts Croatia Istria Weather

7 Day Weather Forecast

05.17
sun
DAY
62°F
NE 6 mph
precip
100%
NIGHT
54°F
W 6 mph
precip
0%
05.18
mon
DAY
66°F
NE 6 mph
precip
0%
NIGHT
56°F
W 7 mph
precip
0%
05.19
tue
DAY
68°F
NE 4 mph
precip
0%
NIGHT
58°F
SW 4 mph
precip
0%
05.20
wed
DAY
70°F
E 6 mph
precip
0%
NIGHT
62°F
SW 6 mph
precip
0%
05.21
thu
DAY
72°F
E 5 mph
precip
0%
NIGHT
62°F
SW 5 mph
precip
0%
05.22
fri
DAY
74°F
SE 6 mph
precip
0%
NIGHT
66°F
SW 5 mph
precip
0%
05.23
sat
DAY
74°F
E 6 mph
precip
0%
NIGHT
66°F
SW 4 mph
precip
0%

Istria Sea Water Temperature in May, °F

Select Year: 2026 2025 2024

The average sea surface temperature in May 2026 for Istria was 16.6°F. The maximum and minimum values were 15.2°F and 17.5°F respectively.

Istria on the Weather Map

Best Time to Visit Istria
The most sunny months:
July 24 days
August 24 days
June 22 days
The most warm months:
August 85.7 °F
July 84.8 °F
June 79.4 °F
Warmest sea temperature:
August 81.2 °F
July 80.5 °F
September 76.2 °F
The most cold months:
January 47.2 °F
February 49.1 °F
December 50.6 °F
The most rainy months:
November 6 days
September 6 days
May 6 days
The most windy months:
February 8 mph
November 8 mph
March 7 mph
more details