Virolahti (Finnish: [ˈʋiroˌlɑhti]; Swedish: Vederlax) is the southeasternmost municipality of Finland on the border of Russia. It is located in the Kymenlaakso region. The municipality has a population of 2,751 (31 December 2025)[2] and covers an area of 558.92 square kilometres (215.80 sq mi), of which 186.97 km2 (72.19 sq mi) is water.[1] The population density is 7.39 inhabitants per square kilometre (19.1/sq mi).

Virolahti
Vederlax
Municipality
Virolahden kunta
Vederlax kommun
Coat of arms of Virolahti
Location of Virolahti in Finland
Location of Virolahti in Finland
Map
Interactive map of Virolahti
Coordinates: 60°35′N 027°42′E / 60.583°N 27.700°E / 60.583; 27.700
Country Finland
RegionKymenlaakso
Sub-regionKotka-Hamina
SeatVirojoki
Government
  Municipality managerTopi Heinänen
Area
 (2018-01-01)[1]
  Total
558.92 km2 (215.80 sq mi)
  Land372.47 km2 (143.81 sq mi)
  Water186.97 km2 (72.19 sq mi)
  Rank208th largest in Finland
Population
 (2025-12-31)[2]
  Total
2,751
  Rank222nd largest in Finland
  Density7.39/km2 (19.1/sq mi)
Population by native language
  Finnish92.6% (official)
  Swedish0.4%
  Others7%
Population by age
  0 to 1411.7%
  15 to 6455.3%
  65 or older33%
Time zoneUTC+02:00 (EET)
  Summer (DST)UTC+03:00 (EEST)
ClimateDfb
Websitevirolahti.fi Edit this at Wikidata

The municipality is unilingually Finnish.

Vaalimaa's border checkpoint along the European route E18 on the Finnish side in Virolahti

The Vaalimaa border crossing, which connects the municipality with Russia, is located in Virolahti.

History

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Virolahti is named after Estonians from Virumaa who traded around the nearby bay, which is also called Virolahti. The first mention of Virolahti dates to 1336. It is mentioned as an independent parish in 1370.[5][6]

A small part of Virolahti was ceded by Sweden to Russia in the Treaty of Uusikaupunki in 1721. The border was located slightly further west than the modern Finnish-Russian border. In the treaty of Turku of 1743, the rest of Virolahti was ceded to Russia. The northern part of Virolahti became the Miehikkälä parish in 1863.[5][6]

Before World War I the Russian Emperor Nicholas II used to spend summers with his family in the archipelago of Virolahti with his yacht Standart, Finland being an autonomous province within the Russian Empire between 1809 and 1917.

Virolahti lost some of its area (over 100 km2 (39 sq mi)) to Soviet Union in Paris Peace Treaties, 1947, after World War II.

Villages in 1939

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Villages marked with an asterisk (*) are now completely or partially on the Russian side:

Alapihlaja, Alaurpala*, Eerikkälä, Hailila, Hanski, Hellä (Heligby), Hämeenkylä (Tavastby), Häppilä, Järvenkylä, Kattilainen, Kiiskilahti* (now Kiyskinlakhti), Kirkonkylä, Klamila, Koivuniemi, Koskela*, Koskelanjoki, Kotola, Kurkela, Laitsalmi*, Länsikylä (Flonckarböle), Martinsaari* (Now Island of Maly Pogranichny), Mattila, Mustamaa, Nopala, Orslahti* (now Primorskoye), Paatio* (Båtö in Swedish, now Bolshoy Pogranitshny), Pajulahti, Pajusaari*, Pitkäpaasi* (Island of Gorniya Kamenya), Pyterlahti, Ravijoki, Ravijärvi, Reinikkala, Rännänen (Grennäs), Sydänkylä (Kallfjärd), Säkäjärvi, Tiilikkala, Vaalimaa (Vaderma), Vilkkilä, Virojoki [fi], Yläpihlaja, Yläurpala* (now Torfjanovka).

Climate

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Virolahti has a humid continental climate (Köppen: Dfb), with some moderation from the nearby Gulf of Finland.

Climate data for Virolahti Koivuniemi (1991–2020 normals, extremes 1977–present)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 7.7
(45.9)
8.4
(47.1)
14.4
(57.9)
22.3
(72.1)
28.1
(82.6)
31.6
(88.9)
32.5
(90.5)
31.0
(87.8)
27.5
(81.5)
17.3
(63.1)
13.4
(56.1)
9.8
(49.6)
32.5
(90.5)
Mean daily maximum °C (°F) −2.6
(27.3)
−2.8
(27.0)
1.2
(34.2)
7.6
(45.7)
14.8
(58.6)
19.0
(66.2)
22.0
(71.6)
20.7
(69.3)
15.3
(59.5)
8.4
(47.1)
3.2
(37.8)
−0.1
(31.8)
8.9
(48.0)
Daily mean °C (°F) −5.3
(22.5)
−6.0
(21.2)
−2.6
(27.3)
3.0
(37.4)
9.3
(48.7)
14.2
(57.6)
17.2
(63.0)
15.7
(60.3)
10.9
(51.6)
5.4
(41.7)
1.0
(33.8)
−2.4
(27.7)
5.0
(41.0)
Mean daily minimum °C (°F) −8.5
(16.7)
−9.5
(14.9)
−6.6
(20.1)
−1.2
(29.8)
3.4
(38.1)
8.7
(47.7)
11.8
(53.2)
10.4
(50.7)
6.4
(43.5)
2.1
(35.8)
−1.6
(29.1)
−5.1
(22.8)
0.9
(33.6)
Record low °C (°F) −37.0
(−34.6)
−34.6
(−30.3)
−31.5
(−24.7)
−17.4
(0.7)
−7.3
(18.9)
−2.6
(27.3)
1.9
(35.4)
−0.5
(31.1)
−7.6
(18.3)
−16.4
(2.5)
−21.7
(−7.1)
−35.3
(−31.5)
−37.0
(−34.6)
Average precipitation mm (inches) 52
(2.0)
44
(1.7)
40
(1.6)
34
(1.3)
40
(1.6)
57
(2.2)
54
(2.1)
73
(2.9)
74
(2.9)
82
(3.2)
71
(2.8)
63
(2.5)
684
(26.9)
Average precipitation days 12 9 8 7 7 8 8 9 9 11 12 12 112
Source 1: https://helda.helsinki.fi/handle/10138/336063
Source 2: https://kilotavu.com/asema-taulukko.php?asema=101231

Notable people born in Virolahti

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References

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  1. 1 2 "Area of Finnish Municipalities 1.1.2018" (PDF). National Land Survey of Finland. Retrieved 30 January 2018.
  2. 1 2 "Population growth slowed down in 2025". Population structure. Statistics Finland. 2026-04-01. ISSN 2243-3627. Retrieved 2026-04-06.
  3. "Population growth slowed down in 2025". Population structure. Statistics Finland. 2026-04-01. ISSN 1797-5395. Retrieved 2026-04-01.
  4. "Population according to age (1-year) and sex by area and the regional division of each statistical reference year, 2003–2020". StatFin. Statistics Finland. Retrieved 2 May 2021.
  5. 1 2 "SuomalainenPaikannimikirja_e-kirja_kuvallinen.pdf" (PDF). kaino.kotus.fi (in Finnish). p. 510. Archived from the original (PDF) on August 25, 2021. Retrieved January 8, 2023.
  6. 1 2 "Suomen Sukututkimusseura". hiski.genealogia.fi (in Finnish). Retrieved January 8, 2023.
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