In April sea water temperature throughout Slovenia is not yet warm enough for swimming and does not exceed 20°C/68°F. Based on water temperature observations over the past ten years, the warmest sea in Slovenia in April was 15°C/59°F, and the coldest 10°C/50°FCurrent water temperature Slovenia
Slovenia cities and resorts with the values of the average water temperature in April in recent years.
For more detailed information about water temperature, surf forecast, weather and time of sunrise and sunset in any specific area of your interest, just click on a ctiy name
Slovenia cities and resorts
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Our report for Slovenia is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, water temperatures, surf forecasts, current temperatures and weather forecasts.