Hamilton weather by month
Warmest month
February
25°C average high
Coolest month
August
6°C average low
Wettest month
April
144 mm of rain
Driest month
January
52 mm of rain
Average temperature and rainfall in Hamilton by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 25°C | 13°C | 7°C / 30°C | 52 mm | 77% | 12 km/h |
| February | 25°C | 14°C | 8°C / 30°C | 54 mm | 75% | 11 km/h |
| March | 23°C | 12°C | 6°C / 29°C | 60 mm | 77% | 11 km/h |
| April | 20°C | 10°C | 1°C / 23°C | 144 mm | 77% | 10 km/h |
| May | 18°C | 8°C | 1°C / 21°C | 82 mm | 80% | 9 km/h |
| June | 15°C | 8°C | -3°C / 19°C | 86 mm | 88% | 10 km/h |
| July | 14°C | 7°C | -1°C / 18°C | 104 mm | 88% | 12 km/h |
| August | 15°C | 6°C | -2°C / 18°C | 89 mm | 87% | 11 km/h |
| September | 16°C | 8°C | 2°C / 21°C | 79 mm | 85% | 14 km/h |
| October | 18°C | 8°C | -2°C / 24°C | 60 mm | 81% | 13 km/h |
| November | 20°C | 11°C | -1°C / 27°C | 65 mm | 82% | 12 km/h |
| December | 23°C | 13°C | 6°C / 30°C | 60 mm | 80% | 12 km/h |
Frost and snow-likely months in Hamilton
No month in Hamilton averages a night of 2°C or below. The coldest month is August with an average low of 6°C and a record low of -2°C, so frost is rare and snow is very unlikely.
These records carry temperature and precipitation, not snowfall totals.
Best time to visit Hamilton
The most comfortable time to visit Hamilton is generally January to March, balancing mild daytime temperatures against the driest stretch of the year. The city has a moderate seasonal swing and rain concentrates around April, totalling about 934 mm a year.
Travellers who prefer heat should aim for February, when highs average 25°C. April is the month to avoid if rain would spoil your plans — it averages 144 mm, roughly 3× the rainfall of the driest month (January).
Hamilton climate: your questions
Will it snow in Hamilton this year?
No: the coldest month in Hamilton is August with an average low of 6°C and a record low of -2°C, so snow is very unlikely. What is falling now: Hamilton weather today.
Which months are best for visiting Hamilton?
January to March are the most comfortable months in Hamilton, with highs near 24°C. February is the warmest month, averaging 25°C by day; April is the wettest, with 144 mm; and August is the coolest, with lows near 6°C. What it is doing today: Hamilton weather today.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Hamilton forecast for what is happening now.
Weather across New Zealand right now
- Ashton14°C
- Auckland16°C
- Blenheim14°C
- Cambridge14°C
- Christchurch15°C
- Dunedin12°C
- Feilding14°C
- Gisborne17°C
- Hamilton14°C
- Havelock North17°C
- Invercargill12°C
- Lower Hutt15°C
- Macetown10°C
- Mosgiel12°C
- Napier17°C
- Nelson14°C
- New Plymouth14°C
- Northcote16°C
- Palmerston North14°C
- Paraparaumu16°C
- Porirua15°C
- Richmond16°C
- Rolleston13°C
- Rotorua14°C
- Taupo14°C
- Tauranga17°C
- Tokoroa14°C
- Upper Hutt15°C
- Wellington15°C
- Whakatane18°C
- Whanganui14°C
- Whangarei14°C
