Köyliö, Finland

Full City Profile

2,901 Population 10/sq mi density

154 ft Elevation 47 meters

40°F Avg Temperature 5°C

Köyliö has a cool climate with an average annual temperature of 40°F (4°C). Winters average 23°F in January while summers reach 61°F in July. The area gets 293 sunny days per year. Annual precipitation totals 23.9 inches. The area receives 8.5 inches of snow annually.

Temperature

23°F Jan (-5°C) 61°F Jul (16°C)

Annual Average	40.2°F
	26% below US avg
January Average	23°F (-5°C)
July Average	61°F (16°C)
Sunny Days	293 days/yr

Geography

Elevation	154 ft (47 m)
Area	282.6 sq mi (732.0 km²)
Population Density	10/sq mi
Coordinates	61.1191°N, 22.3098°W
Timezone	Europe/Helsinki

Precipitation & Snow

Annual Rainfall 23.9"

37% below US avg

Snowfall 8.5"

Wettest Month (Jul) 2.91"

Driest Month (Feb) 1.26"

Air Quality

Earthquake History

2 earthquakes (M2.5+) within 150 km since 1990. Strongest: M2.7. Most recent: M2.6 on Mar 9, 2005.

May 24, 1995	8 km ENE of Nagu, Finland	M2.7	101 km
Mar 9, 2005	30 km SSW of Dragsfjärd, Finland	M2.6	146 km

Source: USGS (M2.5+, 1990–2025)

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	23°F (-5°C)	1.7 in
February	21°F (-6°C)	1.3 in	Coldest, Driest
March	28°F (-2°C)	1.4 in
April	36°F (2°C)	1.5 in
May	49°F (9°C)	1.3 in
June	58°F (14°C)	2.2 in
July	61°F (16°C)	2.9 in	Warmest, Wettest
August	58°F (15°C)	2.9 in
September	50°F (10°C)	2.3 in
October	41°F (5°C)	2.3 in
November	33°F (0°C)	2.2 in
December	26°F (-3°C)	1.9 in

Köyliö has a seasonal temperature swing of 40°F / from 21°F in February to 61°F in July. Total annual precipitation is 23.9 inches, with July being the wettest month (2.9") and February the driest (1.3").

View full weather details →