aurinkoisia

Aurinkoisia is a Finnish adjective form meaning sunny or sunlit when used with a plural noun in the partitive case. It is the plural partitive form of aurinkoinen, which comes from aurinko (sun) plus the suffix -inen that marks a characteristic. In Finnish, adjectives agree with the nouns they modify in number and case, so aurinkoinen has forms such as aurinkoinen (singular nominative), aurinkoisen (singular genitive), and aurinkoisia (plural partitive).

The word is commonly used to describe weather, landscapes, and atmosphere. It appears in weather reports, travel writing, blogs, and everyday speech to convey bright, pleasant conditions, particularly during Finnish summers when sunny weather is notable. The plural partitive usage often accompanies plural nouns like päivät or maisemat, as in aurinkoisia päiviä ("sunny days") or aurinkoisia maisemia ("sunny landscapes").

In literature and media, aurinkoisia can also evoke warmth, vitality, and upbeat mood, beyond a literal description of sunshine. Its versatility makes it a frequent descriptor in both descriptive prose and promotional language for destinations or events associated with pleasant weather. The word is part of ordinary Finnish vocabulary and reflects the language’s system of inflecting adjectives to match the number and case of the nouns they describe.