Kaštelir Temperature by Month
Kaštelir in Istria, Croatia sees significant seasonal temperature differences, with daytime highs between 9°C (48°F) in January and 28°C (82°F) in August, averaging 18°C (64°F) annually. Explore the full monthly breakdown below.
Kaštelir Monthly Temperatures
In Kaštelir, temperatures can shift dramatically between warm in summer and cold in winter. Nights follow the same pattern, with lows ranging from 21°C (70°F) in August to 4°C (39°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Kaštelir by month:
The coldest point of the day usually falls between 4 AM and 6 AM, with temperatures peaking around 3 PM. August, the city's warmest month, gets 299 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Kaštelir vs Croatia
The map below shows the annual temperature across Croatia. You can also select individual months if you want to compare a specific time of year.
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Kaštelir vs World: Temperature Compared
Kaštelir's average annual maximum temperature is 18°C (64°F). To put that in context, here's how it compares to a few well-known destinations:
Athens, Greece sits at 23°C (73°F) on average, with hot dry summers and mild winters characteristic of the Mediterranean.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters — and seasons reversed compared to Europe.
Brisbane, Australia averages 26°C (79°F) a year, with warm winters and hot, humid summers.
What Does the Temperature Feel Like in Kaštelir?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Kaštelir, January is the coolest month, with average highs of 9°C (48°F) and humidity around 67% — considered high. In August, the warmest month, temperatures average 28°C (82°F) with 51% humidity — conditions that feel moderate. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Kaštelir's weather — including monthly rainfall, sunshine hours, and humidity — visit our Kaštelir climate page.
