Yes, there will be mosquitos in mid-October, especially if the weather continues to be warm.
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So until it's cool enough to see your breath at night, mosquitoes will be a threat. In an interesting switch, mosquitos are more active during the day in the fall instead of becoming more active at dusk and night during the summer.
The arc that extends from Veneto to Friuli-Venezia Giulia to Istria seems especially bad, but Tuscany is murder also, as is Sicily. More important than geography, however, is time with the summer being the season when mosquitoes make their bloody entrance.
So until it's cool enough to see your breath at night, mosquitoes will be a threat. In an interesting switch, mosquitos are more active during the day in the fall instead of becoming more active at dusk and night during the summer.
It's Not Cold Enough YetThe most straightforward reason mosquitos are still around in October is that it isn't cold enough to kill them yet. Just as ticks become dormant when the temperatures drop to 40 degrees, mosquitos will remain a threat until 50 degrees.
Most mosquito species in the U.S. increase activity from dusk to dawn, which means you're more likely to get bit if you step outside at that time. People who spend time or live near wooded areas, wetlands or shaded places with standing water, a breeding ground for mosquitoes, are at increased risk of bug bites.
Venice's best travel months (also its busiest and most expensive) are April, May, June, September, and October. Summer in Venice is more temperate (high 70s and 80s) than in Italy's scorching inland cities.
More cases and more deaths likely with climate crisisIt said longer and hotter summers in Europe, with more frequent and severe flooding and heat waves, was creating more favourable conditions for mosquito species such as Aedes albopictus and Aedes aegypti.
Products containing the chemical DEET are proven to be effective repellents for mosquitoes. Autan is a widely available insect repellent containing DEET in Italy. Ensure you follow the application instructions carefully and, providing you do not have a reaction, this is perfectly safe to use for adults and children.