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Porirua, New Zealand climate
Cfb Oceanic / temperate
Porirua has a mildly seasonal mild-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is February with an average daily high near 71°F, while the coldest is July averaging around 40°F at night. Precipitation is fairly even year-round, totalling about 36 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Porirua climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 70 | 71 | 69 | 64 | 61 | 56 | 55 | 56 | 58 | 61 | 63 | 67 |
| Avg temp (°F) | 63 | 63 | 60 | 56 | 53 | 49 | 48 | 49 | 52 | 54 | 57 | 61 |
| Avg low (°F) | 55 | 55 | 52 | 48 | 46 | 42 | 40 | 41 | 45 | 48 | 50 | 54 |
| Precipitation (in) | 2.0 | 2.5 | 2.2 | 2.9 | 3.2 | 3.6 | 3.1 | 3.4 | 3.0 | 3.7 | 2.8 | 3.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 70 | 71 | 69 | 64 | 61 | 56 |
| Avg temp (°F) | 63 | 63 | 60 | 56 | 53 | 49 |
| Avg low (°F) | 55 | 55 | 52 | 48 | 46 | 42 |
| Precipitation (in) | 2.0 | 2.5 | 2.2 | 2.9 | 3.2 | 3.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 55 | 56 | 58 | 61 | 63 | 67 |
| Avg temp (°F) | 48 | 49 | 52 | 54 | 57 | 61 |
| Avg low (°F) | 40 | 41 | 45 | 48 | 50 | 54 |
| Precipitation (in) | 3.1 | 3.4 | 3.0 | 3.7 | 2.8 | 3.2 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 7 | 8 | 9 | 10 | 11 | 11 | 12 | 11 | 13 | 10 | 11 |
| Days with low ≤ 32°F (days) | — | — | — | 0.1 | 1 | 3 | 5 | 3 | 1 | 0.4 | 0.1 | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 7 | 8 | 9 | 10 | 11 |
| Days with low ≤ 32°F (days) | — | — | — | 0.1 | 1 | 3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 12 | 11 | 13 | 10 | 11 |
| Days with low ≤ 32°F (days) | 5 | 3 | 1 | 0.4 | 0.1 | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 57 | 56 | 59 | 58 | 61 | 62 | 60 | 62 | 64 | 63 | 64 |
| Relative humidity (%) | 80 | 79 | 81 | 84 | 86 | 87 | 87 | 87 | 86 | 85 | 83 | 82 |
| Wind speed (mph) | 11.2 | 10.5 | 10.4 | 10.2 | 10.5 | 10.9 | 10.9 | 10.7 | 11.7 | 11.9 | 12.0 | 11.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 60 | 57 | 56 | 59 | 58 | 61 |
| Relative humidity (%) | 80 | 79 | 81 | 84 | 86 | 87 |
| Wind speed (mph) | 11.2 | 10.5 | 10.4 | 10.2 | 10.5 | 10.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 62 | 60 | 62 | 64 | 63 | 64 |
| Relative humidity (%) | 87 | 87 | 86 | 85 | 83 | 82 |
| Wind speed (mph) | 10.9 | 10.7 | 11.7 | 11.9 | 12.0 | 11.3 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 28 years of daily observations at Paraparaumu Aws, a weather station, about 28 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.