Department of Science and Technology
Philippine Atmospheric, Geophysical and
Astronomical Services Administration
Monthly Philippine Agro-climatic Review and Outlook

September 2026

Simplified Version Monthly Agroclimatic Review and Outlook
 


Agroclimatic Review for September 2026

During the month of September, the country was influenced by several weather systems, including the easterlies, Southwest Monsoon, low pressure areas (LPAs), Intertropical Convergence Zone (ITCZ), Tropical Cyclones (TC), and localized thunderstorms.

As shown in Figure 1, rainfall conditions across most parts of the country were generally below to near normal. Above-normal rainfall was recorded over Benguet, La Union, Pangasinan, Bataan, Zambales, and Cavite, while way below-normal rainfall was observed over Negros Provinces.

Tropical Storm (TS) “Pilandok” (KROVANH) from August 30 to September 03, with the enhancement of the southwest monsoon, brought significant rains over the western sections of Northern and Central Luzon, while Tropical Cyclone (TC) “Queenie,” which traversed the Philippine Area of Responsibility from September 24 to 27, did not directly affect the country during its passage.

The highest recorded rainfall for September was observed at Iba, Zambales (990.1 mm), followed by Subic Bay Station (884.4 mm) and BSU, La Trinidad Agromet Station (788.5 mm).

SOIL MOISTURE CONDITION TEMPERATURE
Wet – Pangasinan, Cagayan Valley, Cordillera Administrative Region, Central Luzon, National Capital Region, Cavite, Tayabas, Ambulong, Rizal, Oriental Mindoro, most parts of Palawan, Camarines Sur, Leyte, Bukidnon, Davao del Norte, and Lanao del Sur
Moist – Most of Ilocos Region, Extreme Northern Luzon, Cavite, Alabat, Occidental Mindoro, Albay, Catanduanes, Iloilo City, Negros Occidental, Samar, Eastern Samar, Davao del Sur, General Santos, and Surigao del Sur
Dry – Quirino, rest of the country
  • Slightly above- to above-average mean surface air temperatures were observed across most parts of the country. However, La Union, northern Palawan, and Camarines Sur experienced slightly cooler to cooler-than-average temperatures. In Mindanao, way above-average temperatures were recorded in Dipolog and Misamis Oriental.
  • Borongan recorded the highest temperature at 37.7°C on September 3, while Baguio City recorded the lowest temperature at 16.6°C, also on September 3.





















FARM OPERATIONS
  • Land and Seedbed Preparation
  • Planting and Transplanting
  • Fertilizer Application
  • Weed Management
  • Pest and Disease Management
  • Water Management
  • Harvesting
  • Postharvest
  • Cleaning and Maintenance










The agricultural technicians, farmers, and farm enthusiasts may continue to browse some tips and additional knowledge on potential crop production, early warning for pest and disease infestations and water management strategies for specific areas by visiting the website of the Department of Agriculture in their respective regions. For daily farm weather and climate conditions, you may visit PAGASA website (https://pagasa.dost.gov.ph/)
CROP STAGES REGION/CROPS
Land and Seedbed Preparation
(including preparation for garden plot, urban gardening, and upland farms), (irrigated and rainfed farms)
  • Rice – Ilocos Region, CALABARZON, MIMAROPA, Bicol Region, Western Visayas, Central Visayas, Eastern Visayas, Zamboanga Peninsula, Northern Mindanao, SOCCSKSARGEN, and BARMM
  • Corn – Ilocos Region, Cagayan Valley, Eastern Visayas, and Northern Mindanao
Planting and Transplanting
(broadcasting / direct seeding – for rice, corn, conventional way/ by rows - other cash crops)
  • Rice – Ilocos Region, Cagayan Valley, CALABARZON, MIMAROPA, Bicol Region, Western Visayas, Central Visayas, Eastern Visayas, Zamboanga Peninsula, and Northern Mindanao
  • Corn – Ilocos Region, Cagayan Valley, Central Visayas, Eastern Visayas, Zamboanga Peninsula, Northern Mindanao, SOCCSKSARGEN, and BARMM
  • High Value Crops – All Regions
Vegetative Stage
(tillering, head development)
  • Rice – Ilocos Region, Cagayan Valley, Cordillera Administrative Region, Central Luzon, MIMAROPA, Bicol Region, Western Visayas, Central Visayas, Eastern Visayas, Zamboanga Peninsula, Northern Mindanao, Davao Region, SOCCSKSARGEN, Caraga, and BARMM
  • Corn – Cordillera Administrative Region, Central Visayas, Zamboanga Peninsula, Northern Mindanao, Davao Region, SOCCSKSARGEN, and BARMM
  • High Value Crops – All Regions
Reproductive Stage
(Heading – rice; Tasselling/Silking – corn)
  • Rice – Ilocos Region, Cagayan Valley, Cordillera Administrative Region, Central Luzon, CALABARZON, Bicol Region, Western Visayas, Eastern Visayas, Northern Mindanao, Davao Region, SOCCSKSARGEN, Caraga, and BARMM
  • Corn – Central Visayas, Zamboanga Peninsula, Northern Mindanao, Davao Region, SOCCSKSARGEN, and BARMM
Maturing/Ripening
  • Rice – Ilocos Region, Cagayan Valley, Cordillera Administrative Region, Central Luzon, CALABARZON, MIMAROPA, Bicol Region, Western Visayas, Central Visayas, Eastern Visayas, Zamboanga Peninsula, Davao Region, SOCCSKSARGEN, Caraga, and BARMM
  • Corn – Cagayan Valley, Cordillera Administrative Region, Central Luzon, CALABARZON, MIMAROPA, Bicol Region, Western Visayas, Eastern Visayas, Zamboanga Peninsula, Northern Mindanao, Caraga, and BARMM
Harvesting Stage
  • Rice – Cagayan Valley, Cordillera Administrative Region, Central Luzon, CALABARZON, MIMAROPA, Bicol Region, Western Visayas, Central Visayas, Eastern Visayas, Zamboanga Peninsula, Northern Mindanao, Davao Region, SOCCSKSARGEN, Caraga, and BARMM
  • Corn – Ilocos Region, Cagayan Valley, Cordillera Administrative Region, Central Luzon, CALABARZON, MIMAROPA, Bicol Region, Western Visayas, Central Visayas, Eastern Visayas, Northern Mindanao, Caraga, and BARMM
  • High Value Crops – All Regions


Agroclimatic Outlook for October 2026
The weather systems that will affect the country in October are the easterlies, ridge of the high-pressure area (HPA), intertropical convergence zone (ITCZ), low-pressure areas (LPAs), tropical cyclones, and localized thunderstorms.
One or two (1 or 2) tropical cyclones (TC) may enter or develop within the Philippine Area of Responsibility (PAR). The transition to the Northeast (NE) Monsoon is likely to occur this month.

As illustrated in Figure 2, below-normal to near normal rainfall condition will be experienced over the country.
Forecast Mean Temperature Anomaly ENSO ALERT SYSTEM STATUS

Warmer to slightly warmer mean temperatures are expected across most parts of the country. However, northern Palawan, Occidental Mindoro, Romblon, and Bohol are expected to experience cooler to slightly cooler-than-average conditions.
EL NIÑO ADVISORY
(as of 7 October 2026)

https://www.pagasa.dost.gov.ph/climate/climate-advisories

A strong to very strong El Niño is present in the Tropical Pacific. Forecasts predict that El Niño will continue until the first half of 2027 and may reach its peak before the end of 2026.

El Niño increases the likelihood of below-normal rainfall, which may lead to adverse impacts, including dry spells and droughts in some areas of the country. However, above-normal rainfall conditions may still occur during the passage of tropical cyclones and other rain-bearing weather systems.






















Prepared
MTR
Checked
MEVT
Approved
TAC
Uploded
JOT