talvisin
Talvisin is a Finnish adverb meaning "in winter" or "during the winter months." It denotes events, conditions, or patterns that occur during successive winters, often in a recurring or habitual sense. The form is part of a common pattern in Finnish where nouns related to seasons take the suffix -isin to indicate seasonal repetition (for example kesäisin, talvisin, syksyisin, öisin).
Usage and nuance: Talvisin is frequently used in descriptive prose to discuss climate, nature, agriculture, tourism,
Nuance and register: In everyday speech, talvisin can sound slightly more literary or formal than talvella,
Examples: Talvisin Suomessa sataa paljon lunta. Talvisin kaupungissa järjestetään valofestivaaleja.