June is one of the warmer months of the year in Hamilton, with average highs near 16°C and lows around 8.1°C (mean 12.1°C). It is about average for rainfall, averaging 80 mm of rainfall and 83% relative humidity across the period.
June is one of the warmer months of the year in Hamilton. Across 45 years of records, the warmest June in Hamilton was 2023 — when the month averaged 14.4°C — while the coldest was 1991 at 10°C. Typical June days reach 16°C with nights near 8.1°C. The long-term trend is warming, about 0.4°C per decade.
June is about average for rainfall in Hamilton, averaging 80 mm of rainfall. The wettest June on record was 2017 with 159 mm, while the driest was 1988 at 26 mm.
Relative humidity in Hamilton during June averages 83%. The most humid June was 2002 at 87%, and the least humid was 1995 at 80%.
June receives about 4.9 kWh/m²/day of solar energy in Hamilton. The sunniest June was 2018 at 5.8 kWh/m²/day, and the cloudiest was 2012 at 4.
Average wind speed in Hamilton during June is 3.1 m/s. The windiest June was 1994 at 4.1 m/s, while the calmest were 1987 and 2014 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.5°C | 11.6°C | 12.2°C | 12.1°C | 13.1°C | +1.6°C |
| Avg High | 15.6°C | 15.6°C | 15.9°C | 16.0°C | 17.2°C | +1.6°C |
| Avg Low | 7.4°C | 7.6°C | 8.5°C | 8.3°C | 8.9°C | +1.5°C |
| Avg Rain | 67 mm | 78 mm | 91 mm | 92 mm | 65 mm | -2 mm |
June temperatures in Hamilton have risen by about 1.6°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 0°C (1989) to a record high of 26.7°C (2018).
Rainfall in June is about average for rainfall, averaging 80 mm, with a wettest year of 159 mm.
One of the best times to visit Hamilton
June is one of the best times to visit Hamilton. Expect days averaging 16°C and nights around 8.1°C (mean 12.1°C) — warmer than Hamilton's yearly average — with moderate rainfall (80 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 17.0°C | 13.1°C | 9.3°C | 24.1°C | 4.8°C | 76 mm | 82% | 3.9 m/s | 4.5 |
| 2024 | 15.7°C | 11.8°C | 7.8°C | 21.7°C | 3.3°C | 60 mm | 83% | 3.4 m/s | 4.9 |
| 2023 🔥 | 19.2°C | 14.4°C | 9.6°C | 23.5°C | 5.0°C | 60 mm | 82% | 2.6 m/s | 5.6 |
| 2022 | 16.5°C | 12.6°C | 8.7°C | 20.8°C | 4.6°C | 56 mm | 82% | 3.5 m/s | 5 |
| 2021 | 17.4°C | 13.3°C | 9.1°C | 21.5°C | 5.6°C | 34 mm | 82% | 3 m/s | 5.2 |
| 2020 | 17.2°C | 13.1°C | 9.1°C | 25.6°C | 4.6°C | 102 mm | 83% | 3.2 m/s | 4.7 |
| 2019 | 16.0°C | 12.0°C | 8.0°C | 22.8°C | 4.2°C | 87 mm | 84% | 3.3 m/s | 4.9 |
| 2018 | 18.2°C | 13.4°C | 8.7°C | 26.7°C | 5.6°C | 66 mm | 81% | 2.6 m/s | 5.8 |
| 2017 🌧️ | 15.8°C | 12.6°C | 9.5°C | 21.2°C | 6.4°C | 159 mm | 86% | 3.9 m/s | 4.1 |
| 2016 | 16.2°C | 12.3°C | 8.5°C | 21.9°C | 4.4°C | 83 mm | 85% | 2.7 m/s | 4.8 |
| 2015 | 15.0°C | 11.1°C | 7.2°C | 22.9°C | 3.2°C | 67 mm | 83% | 3.3 m/s | 4.7 |
| 2014 | 17.0°C | 13.1°C | 9.1°C | 23.0°C | 5.0°C | 87 mm | 84% | 2.2 m/s | 5 |
| 2013 | 15.9°C | 11.9°C | 7.9°C | 20.1°C | 3.3°C | 58 mm | 83% | 2.7 m/s | 4.9 |
| 2012 | 14.4°C | 11.0°C | 7.6°C | 20.3°C | 2.2°C | 156 mm | 85% | 2.9 m/s | 4 |
| 2011 | 14.5°C | 10.9°C | 7.4°C | 22.3°C | 4.6°C | 97 mm | 85% | 2.8 m/s | 4.5 |
| 2010 | 17.2°C | 13.1°C | 9.0°C | 21.3°C | 5.0°C | 57 mm | 82% | 2.4 m/s | 5.6 |
| 2009 | 16.6°C | 12.5°C | 8.4°C | 23.3°C | 3.5°C | 60 mm | 82% | 2.7 m/s | 5.5 |
| 2008 | 15.3°C | 11.5°C | 7.7°C | 19.3°C | 3.5°C | 100 mm | 82% | 3.3 m/s | 4.8 |
| 2007 | 15.7°C | 12.3°C | 8.8°C | 20.4°C | 5.1°C | 117 mm | 87% | 2.8 m/s | 4.5 |
| 2006 | 17.4°C | 13.3°C | 9.2°C | 22.9°C | 6.7°C | 61 mm | 83% | 3 m/s | 5 |
| 2005 | 16.6°C | 12.8°C | 9.0°C | 22.0°C | 3.6°C | 100 mm | 86% | 2.7 m/s | 4.5 |
| 2004 | 15.7°C | 12.1°C | 8.5°C | 19.4°C | 5.0°C | 110 mm | 85% | 3.4 m/s | 4.5 |
| 2003 | 16.9°C | 13.2°C | 9.6°C | 20.6°C | 6.1°C | 84 mm | 84% | 3.4 m/s | 4.8 |
| 2002 | 14.9°C | 11.7°C | 8.5°C | 19.2°C | 6.0°C | 129 mm | 87% | 4 m/s | 4.4 |
| 2001 | 14.7°C | 11.1°C | 7.5°C | 19.7°C | 1.7°C | 76 mm | 84% | 3.4 m/s | 4.3 |
| 2000 | 15.4°C | 11.4°C | 7.4°C | 23.8°C | 2.9°C | 71 mm | 84% | 3.3 m/s | 4.4 |
| 1999 | 14.8°C | 10.9°C | 6.9°C | 20.0°C | 2.3°C | 90 mm | 85% | 3 m/s | 4.8 |
| 1998 | 14.7°C | 11.1°C | 7.4°C | 22.5°C | 1.3°C | 113 mm | 84% | 3.1 m/s | 4.8 |
| 1997 | 15.1°C | 11.2°C | 7.4°C | 18.8°C | 4.7°C | 109 mm | 84% | 3.2 m/s | 4.8 |
| 1996 | 16.0°C | 11.7°C | 7.4°C | 21.4°C | 2.9°C | 39 mm | 81% | 3.4 m/s | 5.7 |
| 1995 | 16.7°C | 11.9°C | 7.1°C | 25.4°C | 3.2°C | 35 mm | 80% | 3 m/s | 5.7 |
| 1994 | 15.0°C | 11.3°C | 7.7°C | 19.8°C | 4.3°C | 68 mm | 82% | 4.1 m/s | 4.5 |
| 1993 | 16.1°C | 12.3°C | 8.4°C | 21.3°C | 4.2°C | 61 mm | 85% | 3 m/s | 4.6 |
| 1992 | 17.8°C | 13.4°C | 9.0°C | 22.3°C | 6.2°C | 38 mm | 82% | 3 m/s | 5.3 |
| 1991 ❄️ | 13.8°C | 10.0°C | 6.3°C | 17.1°C | 0.5°C | 118 mm | 82% | 2.8 m/s | 4.5 |
| 1990 | 15.5°C | 11.7°C | 8.0°C | 20.3°C | 4.7°C | 110 mm | 82% | 2.9 m/s | 4.5 |
| 1989 | 15.8°C | 11.7°C | 7.7°C | 24.9°C | 0.0°C | 75 mm | 80% | 2.7 m/s | 5.1 |
| 1988 | 17.6°C | 12.9°C | 8.1°C | 22.5°C | 4.3°C | 26 mm | 82% | 2.3 m/s | 5.5 |
| 1987 | 13.8°C | 10.3°C | 6.8°C | 18.3°C | 3.6°C | 104 mm | 82% | 2.2 m/s | 4.7 |
| 1986 | 16.5°C | 11.8°C | 7.0°C | 25.0°C | 1.3°C | 54 mm | 83% | 3.2 m/s | 4.9 |
| 1985 | 14.5°C | 10.4°C | 6.3°C | 20.0°C | 1.9°C | 68 mm | 81% | 2.8 m/s | 4.9 |
| 1984 | 16.2°C | 12.1°C | 7.9°C | 21.1°C | 4.9°C | 53 mm | 82% | 3.4 m/s | 4.8 |
| 1983 | 14.9°C | 11.1°C | 7.3°C | 22.2°C | 1.6°C | 72 mm | 84% | 3.4 m/s | — |
| 1982 | 16.0°C | 12.2°C | 8.3°C | 25.9°C | 3.5°C | 65 mm | 82% | 3 m/s | — |
| 1981 | 14.7°C | 11.1°C | 7.4°C | 18.7°C | 2.1°C | 81 mm | 84% | 3.5 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 16°C with lows near 8.1°C (mean 12.1°C), based on 45 years of NASA POWER data.
June averages 80 mm of rainfall in Hamilton, about average for rainfall. The wettest on record was 159 mm in 2017.
The hottest June reached 26.7°C in 2018. The coldest dipped to 0°C in 1989.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 1.6°C. Daytime highs moved from 15.3°C to 17.2°C and overnight lows from 7.4°C to 8.9°C over the same span.
June is one of the warmer months of the year in Hamilton and about average for rainfall, so plan for around 16°C daytime highs and 8.1°C at night.
Not quite — June is the 10th coolest month in Hamilton, averaging 12.1°C.
For June in Hamilton, pack light layers you can adjust through the day, with typical highs of 16°C and lows of 8.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 83% — quite humid.
Average wind speed in June is 3.1 m/s. The windiest June on record averaged 4.1 m/s (1994).
The wettest June on record was 2017 with 159 mm. On average, June sees 80 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Hamilton behaves each June, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for June specifically, along with year-by-year records and how the month has changed over the decades.
