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9°
Clear
Feels Like: 7°
Min: 8°
Max: 18°
The next few hours will be clear, with today reaching 18°C and dropping to 9°C. The coming days will be clear throughout the day.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:00
Sunrise
18:46
Sunset
Moon
Waxing Gibbous
18:14
Moonrise
05:17
Moonset
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View stargazing scoreWeather in Kastav today, September 25, 2026
Sunshine leads the day in Kastav on September 25, 2026, with a patch of cloud building near 19:00. The broader outlook stays fair despite that temporary thickening. Morning skies stay relatively clear, holding cloud close to 0% near 05:00. The early part of the day favours being outside.
Expect highs of 18°C and cooler readings close to 8°C. Relative humidity sits between 45% and 87%, reaching its peak around 07:00. A lighter breeze peaks around 13:00 near 2.9 km/h.
Afternoon conditions open up, holding cloud close to 44% near 19:00. The day finishes on a milder, brighter note. Visibility stays generally good near 37.4 km on average, though it can drop toward 24.6 km in thicker cloud or showers. The sun rises at 07:00 and sets at 18:46, for a total of 11 hours 45 minutes of sunlight today.
In short, September 25, 2026 looks like a fine day in Kastav for being outside, peaking around 18°C.
Frequently asked questions about weather in Kastav
How warm does it get in Kastav?
The warmest month in Kastav is August, with average high temperatures of 26°C. The average temperature during this period is around 21°C.
How cold does it get in Kastav?
The coldest month in Kastav is January, with average low temperatures of -1°C. The average temperature during this period is around 2°C.
What is the wettest time of year in Kastav?
The wettest month in Kastav is November, with an average of 237mm of precipitation.
What is the driest time of year in Kastav?
The driest month in Kastav is June, with an average of 113mm of precipitation.
