Hamilton weather in January
In January, Hamilton sees average daytime highs of 23°C and overnight lows near 15°C, with 71 mm of rain across 8.8 wet days and about 14.3 hours of daylight. It is the 2nd-warmest and 11th-wettest month of the year here.
Highs climb over the month, from about 22°C in the first days to 24°C by the end. The sky is clear or mostly clear about 22% of the time in January, and the air most often feels comfortable.
Daylight stretches from about 14 h 36 min at the start of January to 14 hours by month's end. Set against the rest of the year, January is Hamilton's 8th-clearest and 6th-windiest month. For the whole year in context, see Hamilton's year-round climate.
- Daytime high
- 23°
- 2nd warmest
- Overnight low
- 15°
- 11th coldest
- Rainfall
- 71 mm
- 8.8 wet days
- Daylight
- 14 h 18 min
- 6:18 AM – 8:39 PM
- Cloud cover
- 63%
- 8th clearest
- Wind
- 13 km/h
- 6th windiest
- Solar energy
- 6.61 kWh/m²
- Travel score
- 6.9
- out of 10
Hamilton is largest city in New Zealand's Waikato region.
- Air quality
- Excellent
- PM10 13.4 µg/m³ · 2012
- Density
- 1,734/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Highs climb over the month, from about 22°C in the first days to 24°C by the end.
A typical January day in Hamilton reaches about 23°C in the afternoon and slips back to 15°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 26°C. Set against its neighbours, January runs about 2°C warmer than December and on par with February.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Avg low (°C) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 22 | 14 |
| 2 | 22 | 14 |
| 3 | 22 | 14 |
| 4 | 22 | 14 |
| 5 | 22 | 14 |
| 6 | 23 | 14 |
| 7 | 23 | 14 |
| 8 | 23 | 14 |
| 9 | 23 | 14 |
| 10 | 23 | 14 |
| 11 | 23 | 14 |
| 12 | 23 | 15 |
| 13 | 23 | 15 |
| 14 | 23 | 15 |
| 15 | 23 | 15 |
| 16 | 23 | 15 |
| 17 | 23 | 15 |
| 18 | 23 | 15 |
| 19 | 23 | 15 |
| 20 | 23 | 15 |
| 21 | 24 | 15 |
| 22 | 24 | 15 |
| 23 | 24 | 15 |
| 24 | 24 | 15 |
| 25 | 24 | 15 |
| 26 | 24 | 15 |
| 27 | 24 | 15 |
| 28 | 24 | 15 |
| 29 | 24 | 15 |
| 30 | 24 | 15 |
| 31 | 24 | 15 |
Hamilton weather by month
How January compares with the rest of the year at a glance. January is the 2nd-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 23° / 15° | 71 | 8.8 | 14.3 | 6.9 |
| Feb | 24° / 15° | 70 | 7.9 | 13.5 | 7.1 |
| Mar | 22° / 13° | 72 | 7.8 | 12.3 | 7.0 |
| Apr | 19° / 11° | 91 | 9.4 | 11.1 | 6.2 |
| May | 17° / 9° | 107 | 11.6 | 10 | 5.2 |
| Jun | 14° / 7° | 114 | 12.3 | 9.4 | 4.0 |
| Jul | 14° / 6° | 128 | 13.5 | 9.7 | 3.6 |
| Aug | 14° / 6° | 122 | 14.8 | 10.5 | 3.8 |
| Sep | 16° / 8° | 114 | 13.9 | 11.7 | 4.3 |
| Oct | 17° / 10° | 100 | 12.7 | 13 | 5.1 |
| Nov | 19° / 11° | 88 | 11.1 | 14 | 5.7 |
| Dec | 21° / 13° | 99 | 11 | 14.6 | 6.2 |
Cloud cover in January
The sky is clear or mostly clear about 22% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 18% of January, with mostly cloudy or overcast conditions the remaining 60%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 40 | 41 | 41 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 39 | 38 | 38 | 39 | 38 | 38 | 38 | 38 | 38 | 38 |
| Cloudier (%) | 60 | 59 | 59 | 58 | 58 | 58 | 58 | 58 | 58 | 58 | 59 | 59 | 59 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 61 | 61 | 62 | 62 | 61 | 62 | 62 | 62 | 62 | 62 | 62 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 40 | 60 |
| 2 | 41 | 59 |
| 3 | 41 | 59 |
| 4 | 42 | 58 |
| 5 | 42 | 58 |
| 6 | 42 | 58 |
| 7 | 42 | 58 |
| 8 | 42 | 58 |
| 9 | 42 | 58 |
| 10 | 42 | 58 |
| 11 | 41 | 59 |
| 12 | 41 | 59 |
| 13 | 41 | 59 |
| 14 | 40 | 60 |
| 15 | 40 | 60 |
| 16 | 40 | 60 |
| 17 | 40 | 60 |
| 18 | 40 | 60 |
| 19 | 40 | 60 |
| 20 | 40 | 60 |
| 21 | 39 | 61 |
| 22 | 39 | 61 |
| 23 | 38 | 62 |
| 24 | 38 | 62 |
| 25 | 39 | 61 |
| 26 | 38 | 62 |
| 27 | 38 | 62 |
| 28 | 38 | 62 |
| 29 | 38 | 62 |
| 30 | 38 | 62 |
| 31 | 38 | 62 |
Chance of precipitation in January
Hamilton gets around 71 mm of rain over 8.8 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 29% and peaks near 31% on the wettest days.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 31 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 |
| Rain chance (%) | |
|---|---|
| 1 | 31 |
| 2 | 30 |
| 3 | 30 |
| 4 | 30 |
| 5 | 30 |
| 6 | 29 |
| 7 | 29 |
| 8 | 29 |
| 9 | 30 |
| 10 | 30 |
| 11 | 30 |
| 12 | 30 |
| 13 | 30 |
| 14 | 30 |
| 15 | 30 |
| 16 | 30 |
| 17 | 30 |
| 18 | 30 |
| 19 | 29 |
| 20 | 29 |
| 21 | 29 |
| 22 | 28 |
| 23 | 28 |
| 24 | 27 |
| 25 | 27 |
| 26 | 27 |
| 27 | 26 |
| 28 | 26 |
| 29 | 26 |
| 30 | 26 |
| 31 | 26 |
Humidity in January
Most of January feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the comfortable band about 40% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 37 | 36 | 35 | 35 | 34 | 34 | 33 | 33 | 33 | 32 | 32 | 32 | 32 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Comfortable (%) | 39 | 39 | 40 | 40 | 41 | 41 | 41 | 41 | 41 | 41 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 42 | 41 | 41 | 40 | 39 | 39 | 38 | 37 | 37 | 36 | 35 | 35 | 34 | 33 |
| Humid (%) | 21 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 25 | 25 | 26 | 26 | 27 | 28 | 28 |
| Muggy (%) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | |
|---|---|---|---|---|
| 1 | 37 | 39 | 21 | 3 |
| 2 | 36 | 39 | 22 | 3 |
| 3 | 35 | 40 | 22 | 3 |
| 4 | 35 | 40 | 22 | 3 |
| 5 | 34 | 41 | 23 | 3 |
| 6 | 34 | 41 | 23 | 3 |
| 7 | 33 | 41 | 23 | 3 |
| 8 | 33 | 41 | 23 | 3 |
| 9 | 33 | 41 | 23 | 3 |
| 10 | 32 | 41 | 23 | 3 |
| 11 | 32 | 42 | 23 | 3 |
| 12 | 32 | 42 | 23 | 4 |
| 13 | 32 | 42 | 23 | 4 |
| 14 | 31 | 42 | 23 | 4 |
| 15 | 31 | 42 | 22 | 4 |
| 16 | 30 | 42 | 22 | 5 |
| 17 | 30 | 42 | 23 | 5 |
| 18 | 30 | 42 | 23 | 6 |
| 19 | 30 | 41 | 23 | 6 |
| 20 | 30 | 41 | 23 | 7 |
| 21 | 30 | 40 | 23 | 7 |
| 22 | 29 | 39 | 23 | 8 |
| 23 | 29 | 39 | 24 | 8 |
| 24 | 29 | 38 | 24 | 9 |
| 25 | 29 | 37 | 25 | 9 |
| 26 | 29 | 37 | 25 | 9 |
| 27 | 29 | 36 | 26 | 9 |
| 28 | 29 | 35 | 26 | 9 |
| 29 | 29 | 35 | 27 | 9 |
| 30 | 29 | 34 | 28 | 9 |
| 31 | 29 | 33 | 28 | 9 |
Wind in January
Winds average 13 km/h in January.
Across January, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 14 | light breeze |
| 2 | 14 | light breeze |
| 3 | 14 | light breeze |
| 4 | 14 | light breeze |
| 5 | 14 | light breeze |
| 6 | 14 | light breeze |
| 7 | 14 | light breeze |
| 8 | 14 | light breeze |
| 9 | 13 | light breeze |
| 10 | 13 | light breeze |
| 11 | 13 | light breeze |
| 12 | 13 | light breeze |
| 13 | 13 | light breeze |
| 14 | 13 | light breeze |
| 15 | 13 | light breeze |
| 16 | 13 | light breeze |
| 17 | 13 | light breeze |
| 18 | 13 | light breeze |
| 19 | 13 | light breeze |
| 20 | 13 | light breeze |
| 21 | 13 | light breeze |
| 22 | 13 | light breeze |
| 23 | 13 | light breeze |
| 24 | 13 | light breeze |
| 25 | 13 | light breeze |
| 26 | 13 | light breeze |
| 27 | 13 | light breeze |
| 28 | 13 | light breeze |
| 29 | 13 | light breeze |
| 30 | 13 | light breeze |
| 31 | 13 | light breeze |
Sunrise & sunset in January
Daylight runs from about 14 h 36 min at the start of January to 14 hours by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 36 minutes over January. Sunrise moves from 6:05 AM to 6:33 AM, and sunset from 8:39 PM to 8:31 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 14.6 | 14.6 | 14.6 | 14.5 | 14.5 | 14.5 | 14.5 | 14.5 | 14.5 | 14.5 | 14.4 | 14.4 | 14.4 | 14.4 | 14.4 | 14.3 | 14.3 | 14.3 | 14.3 | 14.3 | 14.2 | 14.2 | 14.2 | 14.2 | 14.1 | 14.1 | 14.1 | 14.0 | 14.0 | 14.0 | 14.0 |
| Sunrise (AM) | 6:05 | 6:06 | 6:06 | 6:07 | 6:08 | 6:09 | 6:10 | 6:10 | 6:11 | 6:12 | 6:13 | 6:14 | 6:15 | 6:16 | 6:17 | 6:18 | 6:19 | 6:20 | 6:21 | 6:22 | 6:23 | 6:24 | 6:25 | 6:26 | 6:27 | 6:28 | 6:29 | 6:30 | 6:31 | 6:32 | 6:33 |
| Sunset (PM) | 8:39 | 8:39 | 8:40 | 8:40 | 8:40 | 8:40 | 8:40 | 8:40 | 8:40 | 8:40 | 8:40 | 8:39 | 8:39 | 8:39 | 8:39 | 8:39 | 8:38 | 8:38 | 8:38 | 8:37 | 8:37 | 8:36 | 8:36 | 8:35 | 8:35 | 8:34 | 8:34 | 8:33 | 8:32 | 8:32 | 8:31 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 14.6 | 6:05 | 8:39 |
| 2 | 14.6 | 6:06 | 8:39 |
| 3 | 14.6 | 6:06 | 8:40 |
| 4 | 14.5 | 6:07 | 8:40 |
| 5 | 14.5 | 6:08 | 8:40 |
| 6 | 14.5 | 6:09 | 8:40 |
| 7 | 14.5 | 6:10 | 8:40 |
| 8 | 14.5 | 6:10 | 8:40 |
| 9 | 14.5 | 6:11 | 8:40 |
| 10 | 14.5 | 6:12 | 8:40 |
| 11 | 14.4 | 6:13 | 8:40 |
| 12 | 14.4 | 6:14 | 8:39 |
| 13 | 14.4 | 6:15 | 8:39 |
| 14 | 14.4 | 6:16 | 8:39 |
| 15 | 14.4 | 6:17 | 8:39 |
| 16 | 14.3 | 6:18 | 8:39 |
| 17 | 14.3 | 6:19 | 8:38 |
| 18 | 14.3 | 6:20 | 8:38 |
| 19 | 14.3 | 6:21 | 8:38 |
| 20 | 14.3 | 6:22 | 8:37 |
| 21 | 14.2 | 6:23 | 8:37 |
| 22 | 14.2 | 6:24 | 8:36 |
| 23 | 14.2 | 6:25 | 8:36 |
| 24 | 14.2 | 6:26 | 8:35 |
| 25 | 14.1 | 6:27 | 8:35 |
| 26 | 14.1 | 6:28 | 8:34 |
| 27 | 14.1 | 6:29 | 8:34 |
| 28 | 14.0 | 6:30 | 8:33 |
| 29 | 14.0 | 6:31 | 8:32 |
| 30 | 14.0 | 6:32 | 8:32 |
| 31 | 14.0 | 6:33 | 8:31 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 6.61 kWh/m² — the sunniest month for solar.
For context, solar energy here swings from a low near 1.84 kWh/m² to a high of 6.61 kWh/m² in January across the year — January's 6.61 kWh/m² sits near the top of that range.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.8 | 6.8 | 6.8 | 6.8 | 6.8 | 6.8 | 6.7 | 6.7 | 6.6 | 6.6 | 6.5 | 6.5 | 6.5 | 6.4 | 6.4 | 6.3 | 6.3 | 6.3 | 6.3 | 6.2 | 6.2 | 6.2 | 6.2 | 6.1 | 6.1 | 6.1 | 6.1 | 6.0 | 6.0 | 6.0 | 6.0 |
| Level | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Intense | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 6.8 | Intense |
| 2 | 6.8 | Intense |
| 3 | 6.8 | Intense |
| 4 | 6.8 | Intense |
| 5 | 6.8 | Intense |
| 6 | 6.8 | Intense |
| 7 | 6.7 | Intense |
| 8 | 6.7 | Intense |
| 9 | 6.6 | Intense |
| 10 | 6.6 | Intense |
| 11 | 6.5 | Intense |
| 12 | 6.5 | Intense |
| 13 | 6.5 | Intense |
| 14 | 6.4 | Intense |
| 15 | 6.4 | Intense |
| 16 | 6.3 | Intense |
| 17 | 6.3 | Intense |
| 18 | 6.3 | Intense |
| 19 | 6.3 | Intense |
| 20 | 6.2 | Intense |
| 21 | 6.2 | Intense |
| 22 | 6.2 | Intense |
| 23 | 6.2 | Intense |
| 24 | 6.1 | Intense |
| 25 | 6.1 | Intense |
| 26 | 6.1 | Intense |
| 27 | 6.1 | Intense |
| 28 | 6.0 | Intense |
| 29 | 6.0 | Intense |
| 30 | 6.0 | Bright |
| 31 | 6.0 | Bright |
Hazard calendar for Hamilton
In January, Hamilton sits inside its cyclone season. The full year is below, with each hazard's peak months called out.
Hamilton sits in the South Indian Ocean cyclone belt; the season peaks January–March.
Is January a good time to visit Hamilton?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a reasonable time to visit Hamilton for sightseeing.
What to pack for Hamilton in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Hamilton sees daytime highs around 23°C and nights near 15°C. Pack sun protection. Worth having: light clothes and rain gear. About 9 days see rain.
Sea temperature near Hamilton in January
The nearest coast averages about 20°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 40 km away) is warmest in February at about 21°C and coldest in August near 14°C.
It's comfortable for a long swim from Jan 17 to Mar 15 — about 1.9 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 20 | 21 | 20 | 19 | 17 | 15 | 14 | 14 | 14 | 15 | 17 | 19 |
| Comfort | Refreshing | Refreshing | Refreshing | Cool | Cool | Cool | Bracing | Bracing | Bracing | Cool | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 20 | Refreshing |
| Feb | 21 | Refreshing |
| Mar | 20 | Refreshing |
| Apr | 19 | Cool |
| May | 17 | Cool |
| Jun | 15 | Cool |
| Jul | 14 | Bracing |
| Aug | 14 | Bracing |
| Sep | 14 | Bracing |
| Oct | 15 | Cool |
| Nov | 17 | Cool |
| Dec | 19 | Cool |
UV index in Hamilton in January
Clear-sky midday UV in January peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Hamilton peaks around January 12 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 12 | 11 | 8 | 5 | 3 | 2 | 2 | 3 | 5 | 7 | 11 | 12 |
| Level | Extreme | Extreme | Very high | High | Moderate | Low | Moderate | Moderate | Moderate | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 12 | Extreme |
| Feb | 11 | Extreme |
| Mar | 8 | Very high |
| Apr | 5 | High |
| May | 3 | Moderate |
| Jun | 2 | Low |
| Jul | 2 | Moderate |
| Aug | 3 | Moderate |
| Sep | 5 | Moderate |
| Oct | 7 | Very high |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Where is Hamilton?
Hamilton sits at 37.8°S, 175.3°E, 39 m above sea level, in New Zealand. The nearest listed city is Hamilton East, 1.0 km away.
Topography around Hamilton
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Hamilton.
Within 3 km, the terrain around Hamilton has only modest variations in elevation — a maximum elevation change of 59 m around an average of 39 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 166 m; within 80 km, large variations in elevation — a maximum elevation change of 1,023 m.
The land around Hamilton is covered by artificial surfaces (57%) and trees (23%) within 3 km, grassland (67%) within 16 km, and grassland (51%) and trees (26%) within 80 km.
New Zealand travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type I
- 230 V · 50 Hz
- Prices
- ≈ 86% of US
- price level, 2025
- GDP per capita
- $49,591
- 2025
- Happiness
- 7.0 / 10
- World Happiness, 2025
- Safe drinking water
- 100%
- of population, 2024
- Homicide rate
- 1.5
- per 100k, 2022
- Road deaths
- 9.6
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Hamilton (-37.7833°, 175.2833°, elevation 39 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).