Table 2. Rainfall in the wettest three months by region, 1950–
2000
Figure 2. Yearly rainfall, 1950–2000
SUMMARY
Percentile | APRIL 2010
5th
25th
50th
75th
95th
1. Luzon
692
917
1,134
1,382
1,885
1.1 Luzon
684
916
1,123
1,382
1,925
1.2 CAR
762
935
1,209
1,384
1,614
2. Visayas
611
769
950
1,185
1,469
3. Mindanao
528
697
883
983
1,752
3.1 Mindanao
528
718
888
999
1,784
3.2 ARMM
538
660
783
947
1,008
Total
616
806
982
1,276
1,739
Source: Constructed by authors based on WorldClim version 1.4
(Hijmans et al. 2005).
Region
Rainfall levels in the driest three consecutive months of the
year are shown in Figure 4 and are aggregated by major
grouping in Table 3. The figure reveals striking differences in
rainfall patterns. Mindanao clearly has rainfall throughout
the year, but most of Luzon has a distinct dry season, and Visayas fits in between these two extremes. This general trend
toward a distinct dry period is most pronounced in the westward sectors of Luzon and Visayas, with the eastern-most
area experiencing a fairly high level of rainfall, similar to that
noted for most of Mindanao. The mean daily maximum temperature in the warmest month of the year is shown in Figure 5, with the companion data by major grouping shown in
Table 4. As expected, higher elevations are much cooler than
the lower elevations, but very little difference exists in distribution across major groupings, or in moving from east to
west, as was noted with rainfall.
Source: Constructed by authors based on WorldClim
version 1.4 (Hijmans et al. 2005).
Table 1. Yearly rainfall by region, 1950–2000
Percentile
5th
25th
50th
75th
1. Luzon
1,751
2,060
2,465
2,897
1.1 Luzon
1,737
2,039
2,432
2,862
1.2 CAR
1,855
2,246
2,698
3,059
2. Visayas
1,707
2,133
2,431
2,975
3. Mindanao
1,667
2,129
2,585
2,863
3.1 Mindanao
1,636
2,182
2,616
2,904
3.2 ARMM
1,785
1,979
2,290
2,717
Total
1,719
2,096
2,491
2,892
Source: Constructed by authors based on WorldClim version 1.4
(Hijmans et al. 2005).
Region
95th
3,367
3,320
3,545
3,466
4,024
4,080
2,923
3,561
Figure 3. Rainfall in the wettest three months, 1950–2000
Figure 4. Rainfall in the driest three months, 1950–2000
Source: Constructed by authors based on WorldClim
version 1.4 (Hijmans et al. 2005).
Source: Constructed by authors based on WorldClim
version 1.4 (Hijmans et al. 2005).
2