Ilocos Region (Region 1)

Rihiyon na Sagor na Baybay na Luzon (Region at the Northwest Coast of Luzon)

Guide, Reference and Links about Vigan. Islands Philippines Places and Destinations

Physiography: Vigan City Islands Philippines

Vigan is situated in a Quarterly Age sedimentary plain called the Vigan - Bantay Plain which is part of the Ilocos coastal plain. The Vigan-Bantay is bounded on the east by a moderately rugged Miocene sediments consisting of interbedded sandstones and shale to very rugged Meta-volcanics and Meta sediment topography; on the south is the Municipality of Santa where the north -south trending fault terminates; to the west is China sea; while the northern boundary opens to the northern extension of the Ilocos coastal plain.

The central part of the plain is characterized by a dissected ridge of Plio-Pleistocene Age that trends in a northeast-southwest direction. The ridge divides the Vigan-Bantay Plain into northern and southern plains.

The northern part of the plain is drained by minor rivers namely: Bantaoay, Sto. Tomas, and Nauman rivers, while the Abra River is the main drainage network of the southern portion of the plain. Abra River meanders within the hinterland but exhibits a braided pattern across the plain.
The drainage network of the eastern margin of Vigan-Bantay plain consist of deeply cut valleys whose pattern is strongly controlled by main faulting trends, particularly those in the northerly and easterly directions.

Vigan is being drained by the Vigan River and Bantay River, respectively, on the north and on the south by Mestizo River whose water discharge comes from Bantaoay head water.

The relief of Vigan Bantay plain is actively level to undulating with a slope ranging from 0% to 8%. Vigan in particular is generally level with several hills in Barangays Tamag, Bulala, and Salindeg, sometimes reaching about 50 meters in elevation and has a slope ranging from 3% to 8%.
The eastern margin of the plain characterized by a steep to very steep slope, about 40% to 60%, the relief often reaches an elevation of more that 600 meters especially the northerly and easterly portion.

The dominant topographic feature in the eastern margin of the town is the Vigan Gap Hill where the continuously shifting Vigan River cut its way. The Gap Hill is located approximately 10 kilometers east of Vigan.

Weather and Climate: Vigan City Islands Philippines

The City of Vigan falls under the first climate type in the Philippines which is characterized by two pronounced seasons: the dry season which starts from the month of November and ends in April and the wet season which spans the months of May to October. The average annual rainfall is 190. 683 mm. and the heaviest registered rainfall is 693. 3 mm.

The average temperature is 26oC. The average warmest temperature is 30.9oC and the average coldest temperature is 21.1oC. An average of 7-10 typhoons visits Vigan annually. The average relative humidity is 81%.

CNN Vigan Weather Condition - Vigan, Philippines Weather Report

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