Table 1 Means and ranges of monthly dengue-like-illness and weather variables in Western and Guadalcanal Provinces of Solomon Island from 2015 to 2018

Meteorological parameters

 Maximum temperature

31.04

0.58

29.83

30.64

31.16

31.36

32.41

 Minimum temperature

23.98

0.67

21.8

23.61

23.92

24.38

25.49

 Average temperature

27.52

0.5

26.1

27.15

27.57

27.86

28.48

 Cumulative rainfall

227.62

179.78

0

81.72

191.48

322.35

698.1

Dengue cases

 Guadalcanal Province

4,900

103

239

2

9

21

39

977

 Western

784

17

23

0

5

10

21.25

145

Dengue cases during El Niño ( n  = 16 months)

 Guadalcanal Province

199

12

9

4

6

9

16

37

 Western

125

8

9

0

0

6

12

28

Dengue cases during neutral ( n  = 22 months)

 Guadalcanal Province

1,756

80

154

2

17

31

53

717

 Western

427

20

15

0

8

19

25

51

Dengue cases during La Niña ( n  = 10 months)

 Guadalcanal Province

2,945

295

430

5

13

24

798

977

 Western

232

24

44

0

6

10

16

145