Climate averages 1991–2020
New Plymouth weather
in January.
A mild, wet month: the 2nd warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a mild month in New Plymouth: daytime highs average 20.0°C and nights cool to about 14.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 106 mm of rain on roughly 10 days, which makes January a wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 34 min on an average January day.
The nearest other city in this atlas is Hamilton, New Zealand (177 km away). In January its highs average 22.5°C, 2.5°C warmer than New Plymouth, with 70 mm of rain.
Among the 11 cities listed in New Zealand, New Plymouth ranks 8th of 11 for the warmest January highs and 11th of 11 for the driest January (rainfall, lowest first). The mean January high of those 11 cities is 20.8°C; New Plymouth is 0.8°C cooler than that mean.
From January to February, average highs rise by 0.7°C to 20.7°C, and monthly rainfall falls from 106 mm to 104 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
New Plymouth climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 20.0°C14.2°C | 14.2°C | 106 | 10.3 | 14.615 h |
| February | 20.7°C14.9°C | 14.9°C | 104 | 9.0 | 13.614 h |
| March | 19.2°C13.6°C | 13.6°C | 109 | 10.5 | 12.412 h |
| April | 16.9°C11.7°C | 11.7°C | 154 | 12.6 | 11.111 h |
| May | 14.7°C10.2°C | 10.2°C | 183 | 14.1 | 10.010 h |
| June | 12.7°C8.3°C | 8.3°C | 185 | 14.7 | 9.59 h |
| July | 11.9°C7.2°C | 7.2°C | 189 | 16.2 | 9.710 h |
| August | 12.4°C7.3°C | 7.3°C | 177 | 16.0 | 10.611 h |
| September | 13.4°C8.3°C | 8.3°C | 173 | 15.6 | 11.812 h |
| October | 14.7°C9.5°C | 9.5°C | 171 | 14.9 | 13.113 h |
| November | 16.3°C10.7°C | 10.7°C | 134 | 12.4 | 14.214 h |
| December | 18.4°C12.9°C | 12.9°C | 160 | 13.4 | 14.815 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Hamilton, New Zealand in JanuaryNew Zealand · 177 kmHigh 22.5°C · Low 14.0°C · 70 mm rain
- Palmerston North in JanuaryNew Zealand · 194 kmHigh 20.8°C · Low 13.1°C · 70 mm rain
- Tauranga in JanuaryNew Zealand · 238 kmHigh 22.0°C · Low 15.5°C · 86 mm rain
- Manukau City in JanuaryNew Zealand · 241 kmHigh 22.2°C · Low 16.0°C · 65 mm rain
- Hastings, New Zealand in JanuaryNew Zealand · 246 kmHigh 23.2°C · Low 14.6°C · 61 mm rain
- Lower Hutt in JanuaryNew Zealand · 249 kmHigh 19.5°C · Low 14.6°C · 58 mm rain
- Auckland in JanuaryNew Zealand · 254 kmHigh 22.0°C · Low 16.4°C · 68 mm rain
- Wellington in JanuaryNew Zealand · 254 kmHigh 17.8°C · Low 14.6°C · 55 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for New Plymouth) is explained once on the New Plymouth year overview and on the Sources, method and limits page.