Sečovlje Temperature by Month
Sečovlje in Slovenia 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.
Sečovlje Monthly Temperatures
Depending on the time of the year, temperatures range from comfortable to cold in Sečovlje. At night, minimum temperatures range from 22°C (72°F) in August to 5°C (41°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Sečovlje by month:
The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. August, the city's warmest month, averages 299 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in May
Historical Sečovlje Temperatures: 1976-2026
Browse day-by-day temperature records for Sečovlje spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Sečovlje vs Slovenia
The map below shows the annual temperature across Slovenia. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Sečovlje vs World: Temperature Compared
Sečovlje'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:
Lisbon, Portugal averages 21°C (70°F) annually — warm summers, mild winters, and rain mainly in the cooler months.
Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.
Shanghai, China averages 21°C (70°F) a year, with warm summers, mild winters, and a noticeable spring and autumn.
Perth, Australia averages 25°C (77°F) annually, with a classic Mediterranean climate — hot dry summers and mild wet winters.
What Does the Temperature Feel Like in Sečovlje?
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 Sečovlje, 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.
Global average temperatures have risen by around 1.2°C since the pre-industrial era, and the effects are visible across many regions. Winters are milder on average, with fewer frost days and less snow in many parts of the world. Heatwaves are more frequent and more intense, and Europe's summers of 2018, 2019, and 2020 all set records.
Summers are also getting drier in some areas, while winter rainfall has increased in others. This contributies to higher river levels and more flooding. In many countries, spring arrives earlier and autumn lasts longer. It has knock-on effects for wildlife, agriculture, and local ecosystems.
For more on Sečovlje's weather — including monthly rainfall, sunshine hours, and humidity — visit our Sečovlje climate page.
