Ilocos Region (Region 1)
Rihiyon na Sagor na Baybay na Luzon (Region at the Northwest Coast of Luzon)
ILOCOS SUR ISLAND PHILIPPINES - ILOCOS SUR PROFILES AND TRAVEL GUIDES
|Ilocos Sur Islands Philippines
Climate of Ilocos Sur
Type of Climate
The Hernandez type of classification under PAGASA defines the climate of the province as generally arid (Type E) wherein there are more dry than wet months. At most, there are only 4 ½ wet months in a year with Q ranges from 1.00 to 1.67, where Q is the ratio of the number of dry months to the number of wet months.
However, the southernmost portion of the province (part of the municipality of Cervantes) was observed to be humid (Type B), where rain is evenly distributed throughout the year with at most 3 dry months and the eastern part of Sugpon is dry (type D) with rain not sufficiently distributed with at most 6 dry months.
The total annual rainfall in Ilocos Sur is 2,552 millimeters, with a monthly average of 213 millimeters. Maximum rainfall is observed during the month of August with a mean rainfall of 710 millimeters, with rainfall means of 3 and 6 millimeters, respectively.
The mean annual air temperature in the province is 27°C. April and May were observed to be the hottest months with temperatures of 28.3°C and 28.7°C, respectively, while the coldest month is January with a temperature of 25.4°C.
The province is located within a region of the country where either typhoon or prolonged drought prevails yearly. The low portions of the province are flooded during the rainy season, however, damage is not great. The rivers and the sea sometimes pose a threat of flooding and erosion in some coastal municipalities of the province more particularly Caoayan, Santa, Narvacan, Sta. Maria and Sta. Cruz.
Popular catches include tilapia, catfish (hito), milkfish (bangus), grouper (lapu-lapu), shrimp (hipon), prawns (sugpo), mackerel (galunggong, hasa-hasa), swordfish, oysters (talaba), mussels (tahong), clams (halaan and tulya), large and small crabs (alimango and alimasag respectively), game fish, sablefish, tuna, cod, blue marlin, and squid/cuttlefish (both called pusit).
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