AGROCLIMATIC INFORMATION FOR AGRICULTURAL PLANNING AND OPERATION IN ILOCOS NORTE PARTICULARLY BATAC AND SURROUNDING AREAS FOR THE MONTH OF JANUARY

I. AGROCLIMATIC SUMMARY::

PPartly cloudy to cloudy skies prevail over the area. Light rains will be experienced during the month of January. Total evaporation of 142.3 mm is normal for the month.

Normal relative humidity in the morning is 83%. Daylight duration is 11 hours and 06 minutes with 65% total bright sunshine. This situation gives an amount of 17.5 MJ/m² of solar radiation during most days of the month. Leaf wetness duration is up to 6 hours. Cool northerly to northeasterly winds prevail.

The normal maximum air temperature is 31.2 °C. An extreme temperature of 35.4 °C was recorded on January 9, 1980. Minimum air temperature is 18.5 °C with an extreme coolness of 10.4°C as what was recorded on January 14, 1981.

II. AGROCLIMATIC DATA (AVERAGE)::

Decade	Rainfall	Tot	AIR TEMPERATURE		RH	Solar	Wind
(10 Day)	(mm)	evap.	Max.	Min.	(%)	Rad.	Speed
		(mm)	(°C)	(°C)		MJ/m2	(kpd)
January
1-10	0.6	44.2	31.3	18.8	83	17.4	35.8
11-20	1.4	46.1	31.0	18.6	83	17.4	40.4
21-31	4.4	52.0	31.2	18.5	83	17.6	41.4

III. TROPICAL CYCLONE

The area is outside the Normal Tropical Cyclone Track. No trace of tropical disturbance during January.