June is one of the warmer months of the year in Chatham, with average highs near 20.6°C and lows around 9.8°C (mean 15.2°C). It is a relatively wet time of year, averaging 86 mm of rainfall and 79% relative humidity across the period.
June is one of the warmer months of the year in Chatham. Across 45 years of records, the warmest June in Chatham was 2021 — when the month averaged 18.5°C — while the coldest was 1986 at 12.7°C. Typical June days reach 20.6°C with nights near 9.8°C. The long-term trend is warming, about 0.4°C per decade.
June is a relatively wet time of year in Chatham, averaging 86 mm of rainfall. The wettest June on record was 1984 with 174 mm, while the driest was 1983 at 36 mm.
Relative humidity in Chatham during June averages 79%. The most humid June was 2006 at 85%, and the least humid was 2020 at 69%.
June receives about 5.6 kWh/m²/day of solar energy in Chatham. The sunniest June was 1999 at 6.3 kWh/m²/day, and the cloudiest were 1984 and 2023 at 4.4.
Average wind speed in Chatham during June is 0.3 m/s. The windiest Junes were 2023, 2024 and 2025, among others at 0.3 m/s, while the calmest were 1992, 1995 and 2006, among others at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.3°C | 15.6°C | 15.0°C | 14.7°C | 17.0°C | +2.7°C |
| Avg High | 19.5°C | 21.2°C | 20.3°C | 20.0°C | 22.8°C | +3.3°C |
| Avg Low | 9.0°C | 10.0°C | 9.7°C | 9.4°C | 11.3°C | +2.3°C |
| Avg Rain | 105 mm | 75 mm | 83 mm | 94 mm | 68 mm | -37 mm |
June temperatures in Chatham have risen by about 2.5°C between 1981–1985 and 2021–2025.
June has ranged from a record low of -1.2°C (2018) to a record high of 37.2°C (2020).
Rainfall in June is a relatively wet time of year, averaging 86 mm, with a wettest year of 174 mm.
One of the best times to visit Chatham
June is one of the best times to visit Chatham. Expect days averaging 20.6°C and nights around 9.8°C (mean 15.2°C) — warmer than Chatham's yearly average — with higher rainfall (86 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 | 23.1°C | 17.2°C | 11.2°C | 33.1°C | 5.1°C | 42 mm | 72% | 0.3 m/s | 5.8 |
| 2024 | 23.4°C | 17.6°C | 11.8°C | 35.7°C | 4.4°C | 71 mm | 75% | 0.3 m/s | 5.5 |
| 2023 | 19.9°C | 15.2°C | 10.5°C | 34.4°C | 3.7°C | 103 mm | 84% | 0.3 m/s | 4.4 |
| 2022 | 21.6°C | 15.9°C | 10.2°C | 29.9°C | 3.4°C | 87 mm | 78% | 0.3 m/s | 5.7 |
| 2021 🔥 | 24.5°C | 18.5°C | 12.4°C | 32.5°C | 4.6°C | 53 mm | 72% | 0.3 m/s | 5.9 |
| 2020 | 24.0°C | 17.7°C | 11.4°C | 37.2°C | 2.6°C | 50 mm | 69% | 0.3 m/s | 6.1 |
| 2019 | 20.5°C | 15.0°C | 9.4°C | 25.0°C | 3.8°C | 80 mm | 78% | 0.3 m/s | 5.8 |
| 2018 | 20.0°C | 13.6°C | 7.3°C | 29.2°C | -1.2°C | 75 mm | 74% | 0.3 m/s | 5.7 |
| 2017 | 21.4°C | 15.9°C | 10.4°C | 29.0°C | 2.9°C | 58 mm | 78% | 0.3 m/s | 5.6 |
| 2016 | 20.4°C | 15.0°C | 9.5°C | 29.2°C | 3.6°C | 72 mm | 79% | 0.3 m/s | 5.2 |
| 2015 | 18.7°C | 13.6°C | 8.5°C | 24.3°C | 2.9°C | 81 mm | 78% | 0.3 m/s | 5.5 |
| 2014 | 21.2°C | 15.7°C | 10.2°C | 29.6°C | 3.7°C | 95 mm | 81% | 0.3 m/s | 5.6 |
| 2013 | 19.1°C | 14.2°C | 9.3°C | 26.9°C | 4.2°C | 120 mm | 83% | 0.3 m/s | 5.3 |
| 2012 | 19.8°C | 14.9°C | 9.9°C | 27.0°C | 6.2°C | 108 mm | 82% | 0.3 m/s | 5.8 |
| 2011 | 18.8°C | 14.0°C | 9.1°C | 26.2°C | 5.0°C | 126 mm | 84% | 0.3 m/s | 5 |
| 2010 | 20.0°C | 15.1°C | 10.1°C | 27.3°C | 5.6°C | 124 mm | 81% | 0.3 m/s | 5.1 |
| 2009 | 19.4°C | 14.7°C | 10.1°C | 26.3°C | 4.2°C | 89 mm | 83% | 0.3 m/s | 5.2 |
| 2008 | 19.6°C | 14.9°C | 10.3°C | 25.2°C | 5.2°C | 93 mm | 84% | 0.3 m/s | 4.8 |
| 2007 | 20.3°C | 14.6°C | 8.9°C | 25.4°C | 3.3°C | 85 mm | 81% | 0.3 m/s | 6.2 |
| 2006 | 21.2°C | 16.4°C | 11.5°C | 26.6°C | 7.7°C | 137 mm | 85% | 0.2 m/s | 5 |
| 2005 | 21.3°C | 15.6°C | 9.9°C | 30.0°C | 4.3°C | 62 mm | 81% | 0.3 m/s | 5.6 |
| 2004 | 18.3°C | 13.2°C | 8.0°C | 26.8°C | 3.1°C | 63 mm | 78% | 0.3 m/s | 5.8 |
| 2003 | 21.5°C | 15.8°C | 10.2°C | 32.9°C | 3.1°C | 97 mm | 80% | 0.3 m/s | 5.8 |
| 2002 | 19.5°C | 13.8°C | 8.2°C | 27.8°C | 2.2°C | 59 mm | 76% | 0.3 m/s | 5.9 |
| 2001 | 21.7°C | 16.3°C | 11.0°C | 30.9°C | 5.7°C | 84 mm | 79% | 0.3 m/s | 5.9 |
| 2000 | 20.4°C | 14.7°C | 9.0°C | 28.1°C | 1.0°C | 63 mm | 77% | 0.3 m/s | 6.1 |
| 1999 | 24.1°C | 17.9°C | 11.6°C | 30.2°C | 4.8°C | 46 mm | 72% | 0.3 m/s | 6.3 |
| 1998 | 20.6°C | 15.2°C | 9.8°C | 27.6°C | 3.2°C | 86 mm | 79% | 0.3 m/s | 5.2 |
| 1997 | 20.6°C | 14.8°C | 8.9°C | 29.7°C | 2.6°C | 46 mm | 78% | 0.3 m/s | 5.6 |
| 1996 | 21.4°C | 15.8°C | 10.2°C | 29.1°C | 3.6°C | 46 mm | 78% | 0.3 m/s | 6.1 |
| 1995 | 22.7°C | 16.5°C | 10.3°C | 31.1°C | 5.0°C | 50 mm | 75% | 0.2 m/s | 6.1 |
| 1994 | 21.3°C | 16.0°C | 10.7°C | 27.8°C | 4.0°C | 102 mm | 82% | 0.3 m/s | 5.3 |
| 1993 | 19.9°C | 14.6°C | 9.3°C | 28.6°C | 3.0°C | 139 mm | 81% | 0.3 m/s | 5.3 |
| 1992 | 20.0°C | 14.6°C | 9.2°C | 27.0°C | 1.8°C | 97 mm | 80% | 0.2 m/s | 5.3 |
| 1991 | 20.5°C | 15.1°C | 9.7°C | 27.9°C | 4.8°C | 68 mm | 78% | 0.3 m/s | 5.9 |
| 1990 | 21.0°C | 15.5°C | 10.0°C | 26.3°C | 0.2°C | 69 mm | 82% | 0.2 m/s | 5.5 |
| 1989 | 20.1°C | 15.1°C | 10.1°C | 27.6°C | 3.7°C | 59 mm | 83% | 0.3 m/s | 5.5 |
| 1988 | 19.1°C | 13.8°C | 8.5°C | 28.7°C | 2.2°C | 78 mm | 80% | 0.3 m/s | 5.6 |
| 1987 | 20.0°C | 14.7°C | 9.3°C | 24.7°C | 5.7°C | 113 mm | 81% | 0.3 m/s | 5.6 |
| 1986 ❄️ | 18.5°C | 12.7°C | 6.9°C | 24.5°C | 2.5°C | 61 mm | 77% | 0.3 m/s | 6.2 |
| 1985 | 18.8°C | 13.8°C | 8.7°C | 23.5°C | 4.5°C | 151 mm | 82% | 0.3 m/s | 5.5 |
| 1984 🌧️ | 19.3°C | 14.1°C | 9.0°C | 28.1°C | 1.7°C | 174 mm | 82% | 0.3 m/s | 4.4 |
| 1983 | 21.4°C | 15.8°C | 10.1°C | 29.8°C | 4.3°C | 36 mm | 80% | 0.2 m/s | — |
| 1982 | 18.6°C | 13.6°C | 8.6°C | 25.1°C | 1.5°C | 134 mm | 81% | 0.3 m/s | — |
| 1981 | 20.0°C | 14.9°C | 9.8°C | 25.3°C | 3.9°C | 136 mm | 82% | 0.3 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 20.6°C with lows near 9.8°C (mean 15.2°C), based on 45 years of NASA POWER data.
June averages 86 mm of rainfall in Chatham, a relatively wet time of year. The wettest on record was 174 mm in 1984.
The hottest June reached 37.2°C in 2020. The coldest dipped to -1.2°C in 2018.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.5°C. Daytime highs moved from 19.6°C to 22.5°C and overnight lows from 9.2°C to 11.2°C over the same span.
June is one of the warmer months of the year in Chatham and a relatively wet time of year, so plan for around 20.6°C daytime highs and 9.8°C at night.
Not quite — June is the 10th coolest month in Chatham, averaging 15.2°C.
For June in Chatham, pack light layers you can adjust through the day, with typical highs of 20.6°C and lows of 9.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 79% — quite humid.
Average wind speed in June is 0.3 m/s. The windiest June on record averaged 0.3 m/s (1981).
The wettest June on record was 1984 with 174 mm. On average, June sees 86 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 Chatham 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.
