Climate averages 1991–2020
Hamilton, New Zealand weather
in January.
A warm, moderately wet month: the 2nd warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a warm month in Hamilton, New Zealand: daytime highs average 22.5°C and nights cool to about 14.0°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 70 mm of rain on roughly 9 days, which makes January a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 14 h 27 min on an average January day.
The nearest other city in this atlas is Tauranga (78 km away). In January its highs average 22.0°C, 0.6°C cooler than Hamilton, New Zealand, with 86 mm of rain.
Among the 11 cities listed in New Zealand, Hamilton, New Zealand ranks 2nd of 11 for the warmest January highs and joint 7th of 11 for the driest January (rainfall, lowest first). The mean January high of those 11 cities is 20.8°C; Hamilton, New Zealand is 1.8°C warmer than that mean.
From January to February, average highs rise by 0.6°C to 23.2°C, and monthly rainfall rises from 70 mm to 72 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
Hamilton, New Zealand climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 22.5°C14.0°C | 14.0°C | 70 | 8.8 | 14.414 h |
| February | 23.2°C14.5°C | 14.5°C | 72 | 8.0 | 13.514 h |
| March | 21.4°C12.8°C | 12.8°C | 72 | 7.6 | 12.412 h |
| April | 18.6°C10.3°C | 10.3°C | 92 | 9.4 | 11.111 h |
| May | 15.8°C8.2°C | 8.2°C | 107 | 11.4 | 10.110 h |
| June | 13.5°C6.1°C | 6.1°C | 114 | 12.1 | 9.610 h |
| July | 12.9°C5.1°C | 5.1°C | 127 | 13.3 | 9.810 h |
| August | 13.5°C5.7°C | 5.7°C | 122 | 14.8 | 10.711 h |
| September | 14.8°C7.1°C | 7.1°C | 114 | 13.9 | 11.812 h |
| October | 16.4°C8.8°C | 8.8°C | 100 | 12.7 | 13.013 h |
| November | 18.1°C10.2°C | 10.2°C | 88 | 11.0 | 14.114 h |
| December | 20.5°C12.7°C | 12.7°C | 99 | 11.0 | 14.715 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
- Tauranga in JanuaryNew Zealand · 78 kmHigh 22.0°C · Low 15.5°C · 86 mm rain
- Manukau City in JanuaryNew Zealand · 95 kmHigh 22.2°C · Low 16.0°C · 65 mm rain
- Auckland in JanuaryNew Zealand · 114 kmHigh 22.0°C · Low 16.4°C · 68 mm rain
- New Plymouth in JanuaryNew Zealand · 177 kmHigh 20.0°C · Low 14.2°C · 106 mm rain
- Hastings, New Zealand in JanuaryNew Zealand · 247 kmHigh 23.2°C · Low 14.6°C · 61 mm rain
- Palmerston North in JanuaryNew Zealand · 288 kmHigh 20.8°C · Low 13.1°C · 70 mm rain
- Lower Hutt in JanuaryNew Zealand · 383 kmHigh 19.5°C · Low 14.6°C · 58 mm rain
- Wellington in JanuaryNew Zealand · 392 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 Hamilton) is explained once on the Hamilton, New Zealand year overview and on the Sources, method and limits page.