Insolation South
Introduction
Solar Calculator
Installation
Cost Savings
click on your city to view the insolation level.
Collingwood
Motueka
Picton
Nelson
Westport Blenheim
Greymouth Kaikoura
Hanmer Springs
Hokitika
Arthur's Pass
Franz Josef
ChristChurch
Haast Ashburton
Timaru
Omarama
Milford Sound
Wanaka
Queenstown
Cromwell
Oamaru
Alexandra
Te Anau
Dunedin
Gore
Milton
Invercargill
Bluff
Halfmoon Bay
Dunedin

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -45.904
Lon 170.475

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.73

4.78

3.68

2.60

1.60

1.23

1.35

2.00

3.27

4.34

5.41

5.57

3.46

Invercargill

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -46.683
Lon 168.45

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.12

4.30

3.26

2.13

1.21

0.91

1.09

1.83

2.94

4.09

5.09

5.61

3.13

Queenstown

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -45.067
Lon 168

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.29

4.50

3.46

2.31

1.43

1.04

1.18

1.87

3.04

4.07

5.17

5.47

3.23

Timaru

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -44.633
Lon 171.22

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.81

4.83

3.70

2.79

1.75

1.39

1.51

2.18

3.32

4.41

5.19

5.40

3.52

Christchurch

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -43.33
Lon 172.47

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.98

4.98

3.79

2.79

1.75

1.29

1.49

2.18

3.36

4.33

5.38

5.72

3.58

Greymouth

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -42.767
Lon 171.2

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.45

4.79

3.71

2.65

1.65

1.19

1.41

1.92

3.01

3.82

5.00

5.20

3.31

Blenheim

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -41.53
Lon 173.96

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.84

5.13

3.97

3.01

1.95

1.44

1.60

2.17

3.38

4.18

5.25

5.42

3.61

Nelson

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -41.05
Lon 173.45

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.84

5.13

3.97

3.01

1.95

1.44

1.60

2.17

3.38

4.18

5.25

5.42

3.61

Kaikoura

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -42.25
Lon 173.43

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.92

4.95

3.82

2.86

1.79

1.30

1.44

2.12

3.27

4.21

5.26

5.59

3.54

Hammer Springs

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -42.867
Lon 172

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.55

4.73

3.61

2.68

1.68

1.23

1.39

1.99

3.06

3.82

4.97

5.05

3.31

Oamaru

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -45.117
Lon 170

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.73

4.78

3.68

2.60

1.60

1.23

1.35

2.00

3.27

4.34

5.41

5.57

3.46

Alexandra

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -45.417
Lon 169.37

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.29

4.50

3.46

2.31

1.43

1.04

1.18

1.87

3.04

4.07

5.17

5.47

3.23

Gore

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -46.15
Lon 168

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.12

4.30

3.26

2.13

1.21

0.91

1.09

1.83

2.94

4.09

5.09

5.61

3.13

Cromwell

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -45.083
Lon 169.383

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.29

4.50

3.46

2.31

1.43

1.04

1.18

1.87

3.04

4.07

5.17

5.47

3.23

Milton

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -46.2
Lon 169

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.12

4.30

3.26

2.13

1.21

0.91

1.09

1.83

2.94

4.09

5.09

5.61

3.13

Te Anau

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -45.7
Lon 167

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

4.99

4.30

3.15

2.04

1.31

1.01

1.19

1.87

2.88

3.88

5.05

5.48

3.09

Wanaka

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -44.117
Lon 169.25

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.80

4.97

3.84

2.68

1.59

1.07

1.19

1.79

2.95

3.99

5.38

5.83

3.42

Omarama

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -44.8
Lon 169

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.80

4.97

3.84

2.68

1.59

1.07

1.19

1.79

2.95

3.99

5.38

5.83

3.42

Franz Josef

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -43.067
Lon 170.3

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.67

4.93

3.74

2.69

1.62

1.13

1.27

1.80

2.93

3.81

5.13

5.46

3.34

Westport

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -41
Lon 171.95

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

6.64

5.84

4.42

3.27

2.19

1.68

1.92

2.69

3.94

4.96

6.01

6.47

4.16

Motueka

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -41.2
Lon 173

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.84

5.13

3.97

3.01

1.95

1.44

1.60

2.17

3.38

4.18

5.25

5.42

3.61

Bluff

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -46.1
Lon 168.33

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.12

4.30

3.26

2.13

1.21

0.91

1.09

1.83

2.94

4.09

5.09

5.61

3.13

Arthur's Pass

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -42.933
Lon 171.55

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.45

4.79

3.71

2.65

1.65

1.19

1.41

1.92

3.01

3.82

5.00

5.20

3.31

Ashburton

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -43
Lon 171.7

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.45

4.79

3.71

2.65

1.65

1.19

1.41

1.92

3.01

3.82

5.00

5.20

3.31

Collingwood

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -40.7
Lon 172.667

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

6.38

5.64

4.30

3.29

2.18

1.67

1.87

2.56

3.80

4.54

5.69

5.88

3.98

Haast

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -43.083
Lon 169.033

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.61

5.04

3.88

2.63

1.63

1.23

1.50

2.15

3.39

4.16

5.53

5.83

3.54

Hokitika

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -42.7
Lon 171

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.45

4.79

3.71

2.65

1.65

1.19

1.41

1.92

3.01

3.82

5.00

5.20

3.31

Milford Sound

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -44
Lon 167.783

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

6.10

5.41

4.01

2.85

1.80

1.45

1.69

2.44

3.62

4.75

6.00

6.58

3.89

Picton

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -41.3
Lon 174.05

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

6.52

5.59

4.30

3.31

2.16

1.68

1.86

2.57

3.82

4.82

5.86

6.17

4.05

Halfmoon Bay

Monthly Averaged Insolation Incident On A Horizontal Surface (kWh/m2/day)

Lat -46.5
Lon 168.05

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual
Average

10-year avg

5.12

4.30

3.26

2.13

1.21

0.91

1.09

1.83

2.94

4.09

5.09

5.61

3.13

Copyright © 2006 Solar One Ltd. All rights reserved.