Monthly Philippine Agro-climatic Review and Outlook

December 2024


During the month of November, the weather systems that affected the country were the northeast monsoon, shear line, intertropical convergence zone (ITCZ), easterlies, low pressure area (LPA), two (2) tropical cyclone, and localized thunderstorms (Figure 1).
  • On December 17, 2024, the LPA east of Mindanao developed into Tropical Depression 'QUERUBIN' and moved north northeastward over the waters east of Mindanao by evening. By the morning of 18 December 2024, the center of Tropical Depression “QUERUBIN” was estimated based on all available data, at the East of Davao City or East of Tagum City, Davao del Norte. The system weakened into a Low Pressure area by the afternoon. On the same day, Tropical Cyclone Wind Signal No. 1 was hoisted over Davao Oriental and Surigao del Sur.
  • On December 22, Tropical Depression "ROMINA" affected the Kalayaan islands, which are part of Palawan but lie outside the Philippine Area of Responsibility. In the afternoon, “ROMINA” affected the southern Kalayaan Islands and the western part of the area in the evening. By the following day, ROMINA no longer directly affected the Kalayaan Islands and moved slowly northwestward.
  • As shown in Figure 1, near to above-normal rainfall conditions were observed in most parts of the country except for patches of below normal rainfall condition in Abra, Benguet, Ilocos Region, Nueva Vizcaya, Central Luzon and Occidental Mindoro while way-below-normal rainfall was recorded over Pangasinan. Catarman (327.2 mm) recorded the highest rainfall amount for the month of December, followed by Alabat (221.8 mm) and Puerto Princesa City (220.6 mm).
SOIL MOISTURE CONDITION

Wet – Cagayan Valley, Baler, Quezon, Cavite, Rizal, Puerto Princesa, Aborlan, Oriental Mindoro, Romblon, Bicol Region, Capiz, Siquijor, Tagbilaran, Eastern Visayas, Zamboanga del Norte, Bukidnon, Davao Region, Surigao del Norte, Surigao del Sur, and Marawi
• Moist – Nueva Vizcaya, Aurora, Ambulong, Dumaguete, Zamboanga del Sur, and Cotabato
• Dry – Rest of the country

TEMPERATURE
Generally, slightly warmer to warmer-thanaverage in most parts of the country except in Aurora, and Palawan which experienced way slightly below average temperature.
• San Jose, Occidental Mindoro recorded the highest maximum temperature of 36.2°C (December 16) while the coldest temperature was recorded in BSU La Trinidad Synoptic Station at 13.8°C (December 18).

CROP STAGES REGION/CROPS
Land and Seedbed Preparation (including preparation for garden plot, urban gardening, and upland farms), (irrigated and rainfed farms)
Ilocos Region, Cagayan Valley, Cordillera Administrative Region, Central Luzon, CALABARZON,
MIMAROPA, Bicol Region, Western Visayas, Central Visayas, Eastern Visayas, Zamboanga Peninsula,
SOCCSKSARGEN, Caraga, and BARMM

Planting and Transplanting (broadcasting / direct seeding – for rice, corn, conventional way/ by rows - other cash crops)

Rice – Ilocos Region, Cordillera Administrative Region, Central Luzon, CALABARZON, MIMAROPA,
Western Visayas, Zamboanga Peninsula, and Davao Region
▪ Corn - Ilocos Region, CALABARZON, Eastern Visayas
Vegetative Stage (tillering, head development)
Rice – Ilocos Region, Cordillera Administrative Region, Central Luzon, CALABARZON, MIMAROPA, Western Visayas,
Central Visayas, Eastern Visayas, and Davao Region
▪ Corn – Ilocos Region, Central Luzon, CALABARZON, MIMAROPA, Eastern Visayas lettuce, mustard, ampalaya,
mung bean, string bean, malunggay, chayote, pechay, okra, upo, patola, ginger, cassava, sweet potato, eggplant,
tomato, ginger, cabbage, potato, celery, kangkong, kinchay, onion leeks, broccoli, radish, long pepper, cauliflower,
sweet pepper, chayote, squash, Baguio beans, carrot, spinach, parsley, mung bean, chili pepper, cabbage, cucumber,
peanut, winged bean, lemongrass, pandan, camote tops, aloe vera, bok choy, fern leaves, taro, arrowroot, alugbati,
batao, cadios, ube, radish, yam, turmeric, onion, onion leeks, turmeric, abaca, rubber, soybean, tobacco, pili, santol,
papaya, banana, coconut, mushroom, pineapple, coffee, lemon, strawberry, avocado, orange, longgan, jackfruit,
guyabano, honeydew, cacao, calamansi, guava, lanzones, guyabano, rambutan, tamarind, jackfruit, dragon fruit, cashew, star apple, sineguelas, atis, kamias, cotton, sugarcane, pomelo, durian, marang, dalandan, and mangosteen etc.
Reproductive Stage (Heading – rice; Tasseling/Silking – corn)
Rice – Ilocos Region, Cordillera Administrative Region, Cagayan Valley, Central Luzon, CALABARZON, Bicol
Region, Western Visayas, Central Visayas, Eastern Visayas, Northern Mindanao, Davao Region, and BARMM
▪ Corn – Ilocos Region, Cagayan Valley, Cordillera Administrative Region, CALABARZON, MIMAROPA, Bicol
Region, Western Visayas, Central Visayas, Eastern Visayas, Northern Mindanao, Davao Region, and BARMM
Maturing/Ripening
Rice – Ilocos Region, Cagayan Valley, Cordillera Administrative Region, Central Luzon, CALABARZON, Bicol
Region, MIMAROPA, Bicol Region, Western Visayas, Central Visayas, Eastern Visayas, Zamboanga Peninsula,
Northern Mindanao, and BARMM
▪ Corn – Ilocos Region, Cagayan Valley, Cordillera Administrative Region, CALABARZON, Bicol Region, Western
Visayas, Central Visayas, Eastern Visayas, Zamboanga Peninsula, Northern Mindanao, Davao Region

FARM ADVISORY

Schedule the field activities well, aligned it appropriately according to the upcoming season. Prolonged rainfall may create a favorable environment for pests and diseases and can attack at any time. Make sure to inspect your rice fields regularly and consult with your local agriculturist for precautionary measures. Furthermore, livestock and domesticated animals are susceptible to contracting diseases during rainy periods, especially during La Niña. Ensure that animal shelters are clean, dry, and well-ventilated. Provide animals with solid, clean floors while keeping them in barns that are protected from drafts. Provide them with cut grass or hay to keep their energy up and guard against pneumonia.

Forecast Mean Temperature Anomaly
Generally, near average to warmer than average surface air temperatures are expected in most parts of the country during the forecast period except for slightly cooler to cooler than average temperatures in some areas in Southern Luzon, and Visayas

ENSO ALERT SYSTEM STATUS

La Niña condition is present in the tropical Pacific. Most climate models suggest that the current La Niña condition is expected to persist through JanuaryFebruary-March (JFM) 2025 season. Higher chances of above normal rainfall in JFM 2025 season is expected, which may cause floods, flashfloods and rain-induced landslides. Furthermore, increased chance of tropical cyclone activity within the Philippine Area of Responsibility (PAR) during the period is likely

Extreme Temperature Range
Luzon Upland:
Lowland:
10.2 ºC – 27.8 ºC
13.1 ºC – 35.5 ºC
Visayas Lowland: 20.1 ºC – 35.0 ºC
Mindanao Upland:
Lowland:
3.7 ºC – 33.4 ºC
18.8ºC – 37.1 ºC

PAGASA will continue to closely monitor the climate conditions that may affect the country and updates shall be issued as appropriate. For further information, please contact the Climatology and Agrometeorology Division (CAD) at telephone number 8284-0800, local 4915.
The weather systems that will likely affect the country during the month of January are the Northeast (NE) Monsoon, shearline, the ridge of high-pressure areas (HPAs), easterlies, intertropical convergence zone (ITCZ), low pressure areas (LPAs), localized thunderstorms, and zero or one (0 or 1) tropical cyclones (TC) may enter or develop inside the Philippine Area of Responsibility (PAR). The weather during the period may be influenced by intra-seasonal and inter-annual climate drivers, including the Madden-Julian Oscillation (MJO) and the La Nia condition. • As shown in Figure 2, near- to above-normal rainfall conditions will likely be experienced over most parts of the country while below normal rainfall condition is also expected in the provinces of Abra, Ilocos Norte and Sur. Pangasinan, Tarlac and Zambales. In highly vulnerable areas, there is a possibility of weather-related hazards such as flooding and rain-induced landslides.
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