Wasps at night and in the rain: how do they behave?
By Wespenprofis.ch · Reviewed by:Fachbewilligung Schädlingsbekämpfung VFB-S · Updated: 3 July 2026
At a glance
Wasps are active by day and barely fly in the dark. At night and during persistent rain they stay inside the nest and become calmer, but not harmless: direct vibrations or light at the nest can trigger a defensive reaction at night as well.
Wasps are day-active insects
Unlike moths, for example, wasps navigate mainly with their eyes and need daylight to do so. As dusk falls they largely stop flying outside and withdraw into the nest, where they spend the night in dense clusters on the combs. At night only the odd individual leaves the nest, for instance when artificial light is burning right next to the entrance hole and attracts them. The outside temperature also plays a part: on cool evenings activity tails off even earlier than on warm summer days.
Behaviour in rain and bad weather
Persistent rain or strong wind likewise keeps wasps largely confined to the nest, since flying in wet conditions is risky and inefficient for them. After longer spells of bad weather you will therefore often notice increased activity as soon as the weather improves — the foraging they missed is made up for in a short space of time, which from the outside can look like a sudden surge in wasp numbers.
Why “calmer” does not mean “harmless”
At night or in the rain fewer individuals are out and about, but the whole colony remains packed together inside the nest. Shocks, vibrations or harsh light directly at the nest can trigger a concentrated defensive reaction even during this phase, because alarm pheromones spread particularly quickly in an enclosed cavity. In late summer especially, when a colony reaches its greatest strength, caution therefore remains appropriate all year round and around the clock — more on this in the guide Why are wasps so aggressive in August.
Not a good time for taking matters into your own hands
The widespread tip of removing a nest yourself at night “while everything is quiet” is riskier than it sounds: because all the insects are gathered in the nest, one disturbance can alarm a particularly large number of wasps at once, while in the dark you cannot make out their flight paths properly. The basics of do-it-yourself removal are explained in the guide Removing a wasp nest yourself. A licensed professional, reachable via /wespennest-entfernen, is the safer option in every case.
Frequently asked questions
Do wasps fly out of the nest at night?
Hardly ever. Wasps navigate visually and depend on daylight, which is why they stay almost entirely inside the nest once it is dark.
Are wasps less aggressive when it rains?
They are out and about less, because they barely fly in wet conditions. Right at the nest, however, they still react sensitively to vibrations or disturbance.
Is night the best time to tackle a nest yourself?
No. Even though wasps are calmer at night, the entire colony is gathered inside the nest, which makes a do-it-yourself attempt riskier rather than safer.