10 - DAY AGROMET BULLETIN

WEATHER REVIEW FOR AGRICULTURAL USERS
OF MALAYSIA

21^st – 30^th  JUNE 2008

SUMMARY

Throughout this last decade of June 2008, Peninsular Malaysia recorded above to much above normal precipitation while Sarawak & east Sabah experienced below to much below normal rainfall. Most places in the Peninsular Malaysia had rainfall amount between 30 to 70 mm. Over East Malaysia, precipitation ranging from 30 to 70 mm was recorded except for few areas in Sabah and Sarawak had rainfall amount less than 10 mm. Generally the amount of rainfall in Malaysia throughout this period would favour agricultural. With regard to the temperature, most of the lowland areas in Malaysia recorded normal temperature during this period. Alor Star, Malacca, Kuching, Sri Aman and Sibu had above normal temperature with Kuantan had much above normal during this period. Chuping, Petaling Jaya, Kuala Krai, Cameron Highland, Kota Kinabalu and Kudat experienced below normal temperature whereas Ipoh had much below normal while Kuala Terengganu recorded very much below normal temperature. The temperature in this decade had not affected significantly the crop growth.    

1.  WEATHER ASSESSMENT

1.1  RAINFALL

Throughout this second decade, Peninsular Malaysia recorded above to much above normal precipitation while Sarawak & east Sabah experienced below to much below normal rainfall. These were shown on map in Figure 2. The Map of Rainfall Total (mm) shown in Figure 1 below indicates that Kelantan, Terengganu and Malacca were comparatively wetter compared to other parts in Malaysia .  Most places in the Peninsular Malaysia had rainfall amount between 30 to 70 mm. Over East Malaysia, precipitation ranging from 30 to 70 mm was recorded except for few areas in Sabah and Sarawak had rainfall amount less than 10 mm during this decade. The highest total rainfall of 253 mm was recorded at Jerangau, Terengganu where 8 out of 10 day period were raining. On the average, most places in Malaysia recorded 5 and 6 of raindays. In the wet areas 7 of raindays were recorded whereas 3 and 4 of raindays were recorded in other areas.       

Figure 2 : Rainfall Percentage from Normal (%)

Figure 3 : Extreme Weather Conditions

1.2  EVAPORATION

In general, Malaysia recorded normal except a few areas in Penang , Selangor & Johore together with an area over the border of Perak & Selangor had below normal evaporation rates throughout this decade. In Figure 4 shown below, most places in Malaysia recorded between 3.0 to 4.0 mm of daily evaporation rates. An area over west Sabah and most part of east coast Sabah had among the highest evaporation rates within this last decade. The lowest evaporation rate, 2.1 mm was recorded over the highland area over northwest Pahang and south Perak & Selangor.      

Figure 4: Mean Daily Evaporation (mm)

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