Hora Atual em Kawaguchi, Japão — JST.

Kawaguchi is a city located in southeastern Saitama Prefecture, Japan. As of 1 April 2025, the city had an estimated population of 595,011 in 293,582 households and a population density of 9605 persons per km2. The total area of the city is 61.95 square kilometres (23.92 sq mi). It is the Greater Tokyo Area's 8th most populated city, and second largest in Saitama Prefecture, after eponymous Saitama.

From Kawaguchi the nearest of our reference hubs are Tokyo (~15 km), Singapore (~5,324 km), Sydney (~7,839 km), while São Paulo sits about 18,522 km away — useful framing when someone needs a feel for whether a meeting is a regional hop or an intercontinental call.

Kawaguchi sits inside Japão — the Eastern Asia subregion, capital Tokyo, languages Japanese, currency JPY (¥).

Ukima (2 km), Shimotoda (3 km), Warabi (3 km), Hasune (4 km) are the nearest cities WorldClockTools indexes around Kawaguchi — that's the cluster to use when scheduling spills past the city limits.

Upcoming country holiday signals around Kawaguchi: Shōwa Day, Constitution Memorial Day, Greenery Day. Bake those into launch, on-call, and travel windows for Japão.

Closest curated airport references from Kawaguchi: HND Tokyo (29 km), NRT Narita (61 km), KIJ Niigata (245 km).