Bolsena Temperature by Month
The average annual maximum temperature in Bolsena, Lazio, Italy is 20°C (68°F), with daytime highs ranging from 10°C (50°F) in January to 31°C (88°F) in August. This page covers monthly averages, day-night differences, and how Bolsena compares to cities worldwide.
Bolsena Monthly Temperatures
Depending on the time of the year, temperatures range from very warm to cold in Bolsena. At night, minimum temperatures range from 19°C (66°F) in August to 3°C (37°F) in January.
The chart below illustrates the average maximum day and minimum night temperatures in Bolsena 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 254 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Bolsena vs Italy
The map below shows the annual temperature across Italy. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Bolsena vs World: Temperature Compared
Bolsena's average annual maximum temperature is 20°C (68°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.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
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 Bolsena?
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 Bolsena, January is the coolest month, with average highs of 10°C (50°F) and humidity around 83% — considered very high. In August, the warmest month, temperatures average 31°C (88°F) with 69% humidity — conditions that feel high. 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.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Bolsena this rarely lasts long on the ground.
For more on Bolsena's weather — including monthly rainfall, sunshine hours, and humidity — visit our Bolsena climate page.
