Saikai

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Saikai

Total population

26,275

Air quality index

77Moderate

Coordinates32.93°, 129.64°

Demographic figures from Statistics Bureau of Japan. Overview below cites Wikipedia and may reference a different year.

Overview

Saikai is a city located in Nagasaki Prefecture, Japan.

Geography

Coordinates & boundaries from the US Census TIGER/Line shapefiles.

Air quality

Current readings from Open-Meteo Air Quality API (Copernicus CAMS European reanalysis).

Wildlife & biodiversity

Citizen-science & research observations from the Global Biodiversity Information Facility (GBIF).

Earthquake history

Events from the USGS Earthquake Catalog (global) (FDSN Event Web Service).

Notable people from here

Kazuyuki Kiyohei Tsukigawa

Mariner, Salvation Army officer

Y

Yuki Kurita

Japanese novelist

A

Akari Taniguchi

Japanese actress

Chiyoji Yukisawa

politician from Japan (1889-1970)

H

Horikawa Yasuichi

Japanese biologist

N

Nobuyuki Matsutake

Japanese journalist

Y

Yasuaki Okamoto

Japanese artist

P

Peter Michiaki Nakamura

Roman Catholic archbishop

H

Harikawa Sakuma

Japanese political activist

People born within ~10 km, from Wikidata (CC0). Click any name for their Wikipedia article.

Nearby places in Nagasaki

• Togitsu
  12.8 mi away · pop. 29,804
• Kawatana
  15.6 mi away · pop. 14,067
• Nagayo
  16 mi away · pop. 42,548
• Higashi-Sonogi
  17.4 mi away · pop. 8,298
• もみじヶ丘団地
  17.5 mi away
• Sasebo
  17.6 mi away · pop. 243,223
• Omura
  18.4 mi away · pop. 95,397
• Nagasaki
  18.6 mi away · pop. 409,118
• 桧台
  19.3 mi away
• 希望ヶ丘団地
  19.5 mi away
• Saza
  19.7 mi away · pop. 13,626
• タマタウン野中
  19.8 mi away

Browse all places in Nagasaki →

Geography & sun

Elevation, sunrise/sunset and daylight from Open-Meteo. Solar climatology from NASA POWER.

Public attention

Pageview totals from the Wikimedia Pageviews API.

Books about Saikai

Search results from Open Library.

Recent natural events nearby

• Kikai Volcano, Japan
  Volcanoes · 2026-05-17 · 153 mi

Wildfires, storms and other events from NASA EONET (last 12 months, within 250 mi).

Recently spotted species

Red-clawed crab

Chiromantes haematocheir

Seen 2026-06-13

Mecodina cineracea

Mecodina cineracea

Seen 2026-06-13

Japanese copper

Lycaena phlaeas daimio

Seen 2026-06-13

Mute Swan

Cygnus olor

Seen 2026-06-13

Amur Barn Swallow

Hirundo rustica gutturalis

Seen 2026-06-13

Patanga japonica

Patanga japonica

Seen 2026-06-13

Chinese Mantis

Tenodera sinensis

Seen 2026-06-13

Amphibious Litter Cockroach

Opisthoplatia orientalis

Seen 2026-06-13

Polygonia c-aureum c-aureum

Polygonia c-aureum c-aureum

Seen 2026-06-13

Research-grade observations from iNaturalist (within ~15 mi).

Gallery

Geotagged photos within ~6 miles of Saikai, from Wikimedia Commons contributors.

1.6 mi3 mi3.4 mi3.4 mi3.4 mi3.4 mi4 mi4 mi4 mi4 mi4 mi4 mi4 mi5.2 mi5.2 mi5.2 mi5.2 mi5.2 mi5.2 mi5.2 mi5.2 mi5.2 mi5.2 mi5.3 mi

Photos via Wikimedia Commons — see each image page for license & attribution.

Official Identifiers