Istro Weather & Climate: Best Time to Visit

In Istro, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 30°C (86°F) in August, the warmest time of the year, to a moderate 16°C (61°F) during cooler months like January.

At night, you can expect temperatures ranging from 24°C (75°F) in August to around 10°C (50°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Istro tends toward drier weather patterns, receiving approximately 298 mm (12 in) of rain per year. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, February it receives moderate rainfall, averaging 55 mm (2.2 in) of precipitation, recorded across 11 rainy days. In contrast, the driest month July brings less rainfall, with 1.5 mm (0.1 in) over a single rainy day. For more details, please visit our Istro Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Istro. While July receives considerable daily sunshine with up to 12.4 hours, December marks the darkest time of the year, where sunshine is scarce with only 3.9 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

The relative humidity is high throughout the year in Istro.

The city experiences its highest humidity in January, reaching 68%. In June, the humidity drops to its lowest level at 57%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year