June is one of the warmer months of the year in Chatham, with average highs near 18.9°C and lows around 11°C (mean 15°C). It is about average for rainfall, averaging 55 mm of rainfall and 80% 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 2025 — when the month averaged 17.7°C — while the coldest was 1991 at 12.8°C. Typical June days reach 18.9°C with nights near 11°C. The long-term trend is warming, about 0.5°C per decade.
June is about average for rainfall in Chatham, averaging 55 mm of rainfall. The wettest June on record was 1997 with 114 mm, while the driest was 2018 at 7 mm.
Relative humidity in Chatham during June averages 80%. The most humid June was 2016 at 84%, and the least humid was 2025 at 76%.
June receives about 5.3 kWh/m²/day of solar energy in Chatham. The sunniest Junes were 2006, 2018 and 2025 at 6 kWh/m²/day, and the cloudiest was 1987 at 4.1.
Average wind speed in Chatham during June is 3.3 m/s. The windiest June was 2012 at 4.5 m/s, while the calmest were 1993 and 2006 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.1°C | 14.5°C | 15.3°C | 15.3°C | 16.2°C | +2.1°C |
| Avg High | 18.0°C | 18.4°C | 19.3°C | 19.2°C | 20.4°C | +2.4°C |
| Avg Low | 10.3°C | 10.5°C | 11.3°C | 11.3°C | 12.1°C | +1.8°C |
| Avg Rain | 57 mm | 59 mm | 46 mm | 60 mm | 49 mm | -8 mm |
June temperatures in Chatham have risen by about 2.3°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 3.5°C (1991) to a record high of 27.3°C (2025).
Rainfall in June is about average for rainfall, averaging 55 mm, with a wettest year of 114 mm.
One of the best times to visit Chatham
June is one of the best times to visit Chatham. Expect days averaging 18.9°C and nights around 11°C (mean 15°C) — warmer than Chatham's yearly average — with moderate rainfall (55 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 🔥 | 22.3°C | 17.7°C | 13.2°C | 27.3°C | 9.0°C | 26 mm | 76% | 3.8 m/s | 6 |
| 2024 | 19.3°C | 15.0°C | 10.8°C | 25.4°C | 7.3°C | 21 mm | 78% | 3.1 m/s | 5.7 |
| 2023 | 21.5°C | 17.1°C | 12.8°C | 26.0°C | 9.3°C | 35 mm | 79% | 3.4 m/s | 5.8 |
| 2022 | 19.9°C | 15.7°C | 11.6°C | 25.8°C | 7.7°C | 49 mm | 78% | 3.4 m/s | 5.9 |
| 2021 | 20.2°C | 16.4°C | 12.5°C | 25.1°C | 10.2°C | 98 mm | 82% | 2.7 m/s | 5 |
| 2020 | 19.3°C | 15.4°C | 11.6°C | 26.0°C | 7.2°C | 65 mm | 78% | 3.7 m/s | 5.6 |
| 2019 | 19.4°C | 15.6°C | 11.8°C | 26.4°C | 9.1°C | 90 mm | 80% | 3.6 m/s | 5.2 |
| 2018 | 20.6°C | 16.2°C | 11.8°C | 24.7°C | 9.0°C | 7 mm | 78% | 3.2 m/s | 6 |
| 2017 | 21.1°C | 17.0°C | 12.9°C | 26.8°C | 9.8°C | 66 mm | 77% | 3.7 m/s | 5.8 |
| 2016 | 18.9°C | 15.4°C | 11.8°C | 23.5°C | 9.0°C | 109 mm | 84% | 3.3 m/s | 4.6 |
| 2015 | 18.8°C | 14.6°C | 10.5°C | 23.2°C | 7.1°C | 26 mm | 77% | 3.7 m/s | 5.6 |
| 2014 | 19.4°C | 15.5°C | 11.7°C | 22.4°C | 8.9°C | 45 mm | 78% | 2.7 m/s | 5.5 |
| 2013 | 17.7°C | 14.0°C | 10.3°C | 22.7°C | 6.2°C | 32 mm | 81% | 3.9 m/s | 4.9 |
| 2012 | 17.8°C | 14.4°C | 10.9°C | 24.6°C | 6.9°C | 107 mm | 81% | 4.5 m/s | 4.8 |
| 2011 | 18.6°C | 14.7°C | 10.8°C | 25.7°C | 6.9°C | 76 mm | 79% | 3.9 m/s | 5.3 |
| 2010 | 19.7°C | 15.3°C | 10.9°C | 25.0°C | 6.9°C | 41 mm | 78% | 2.9 m/s | 5.6 |
| 2009 | 19.3°C | 15.3°C | 11.3°C | 25.0°C | 7.4°C | 32 mm | 76% | 2.8 m/s | 5.5 |
| 2008 | 18.9°C | 15.0°C | 11.0°C | 23.1°C | 8.4°C | 51 mm | 78% | 3.3 m/s | 5.3 |
| 2007 | 19.1°C | 15.5°C | 12.0°C | 21.7°C | 8.1°C | 108 mm | 83% | 3.4 m/s | 4.9 |
| 2006 | 20.2°C | 15.7°C | 11.3°C | 25.4°C | 6.4°C | 29 mm | 76% | 2.6 m/s | 6 |
| 2005 | 20.0°C | 15.7°C | 11.4°C | 26.4°C | 6.6°C | 31 mm | 79% | 3.1 m/s | 5.4 |
| 2004 | 19.5°C | 15.5°C | 11.6°C | 24.8°C | 8.2°C | 42 mm | 80% | 3.4 m/s | 5.4 |
| 2003 | 20.2°C | 16.0°C | 11.9°C | 22.5°C | 9.3°C | 61 mm | 82% | 2.9 m/s | 5.6 |
| 2002 | 18.4°C | 14.7°C | 11.1°C | 24.4°C | 8.1°C | 57 mm | 82% | 3.2 m/s | 5.1 |
| 2001 | 18.1°C | 14.0°C | 9.9°C | 23.4°C | 5.5°C | 25 mm | 80% | 3.1 m/s | 5.6 |
| 2000 | 19.0°C | 15.2°C | 11.3°C | 25.7°C | 8.4°C | 26 mm | 82% | 3.2 m/s | 4.8 |
| 1999 | 18.2°C | 14.4°C | 10.5°C | 22.6°C | 7.1°C | 72 mm | 79% | 3.2 m/s | 5.4 |
| 1998 | 18.1°C | 14.6°C | 11.1°C | 23.6°C | 6.5°C | 102 mm | 83% | 4.1 m/s | 4.5 |
| 1997 🌧️ | 17.9°C | 14.6°C | 11.2°C | 23.0°C | 8.2°C | 114 mm | 81% | 3.8 m/s | 4.6 |
| 1996 | 19.1°C | 14.6°C | 10.1°C | 25.7°C | 6.8°C | 15 mm | 77% | 2.9 m/s | 5.6 |
| 1995 | 17.6°C | 13.6°C | 9.6°C | 25.9°C | 7.4°C | 33 mm | 81% | 3.5 m/s | 4.8 |
| 1994 | 18.8°C | 14.6°C | 10.3°C | 23.7°C | 6.0°C | 39 mm | 79% | 3.6 m/s | 5.6 |
| 1993 | 19.4°C | 15.4°C | 11.4°C | 23.2°C | 8.3°C | 48 mm | 80% | 2.6 m/s | 5.2 |
| 1992 | 20.0°C | 15.6°C | 11.3°C | 25.4°C | 8.2°C | 37 mm | 77% | 3 m/s | 5.3 |
| 1991 ❄️ | 16.4°C | 12.8°C | 9.3°C | 20.5°C | 3.5°C | 82 mm | 79% | 4 m/s | 4.6 |
| 1990 | 18.1°C | 14.3°C | 10.5°C | 23.4°C | 7.0°C | 51 mm | 78% | 3.6 m/s | 4.8 |
| 1989 | 18.7°C | 14.4°C | 10.1°C | 25.0°C | 5.4°C | 50 mm | 77% | 2.9 m/s | 5.5 |
| 1988 | 17.6°C | 14.0°C | 10.5°C | 21.6°C | 5.8°C | 29 mm | 83% | 3.1 m/s | 4.8 |
| 1987 | 17.1°C | 13.5°C | 9.9°C | 24.4°C | 6.2°C | 75 mm | 82% | 3.1 m/s | 4.1 |
| 1986 | 18.6°C | 14.5°C | 10.4°C | 24.6°C | 6.0°C | 24 mm | 81% | 3.7 m/s | 5.2 |
| 1985 | 16.7°C | 13.2°C | 9.7°C | 20.4°C | 5.7°C | 88 mm | 81% | 3.5 m/s | 4.6 |
| 1984 | 18.4°C | 14.1°C | 9.8°C | 23.3°C | 6.2°C | 38 mm | 79% | 2.9 m/s | 5.2 |
| 1983 | 18.3°C | 14.5°C | 10.7°C | 22.8°C | 7.6°C | 55 mm | 81% | 3.3 m/s | — |
| 1982 | 19.0°C | 15.5°C | 12.0°C | 23.9°C | 8.7°C | 91 mm | 83% | 3 m/s | — |
| 1981 | 17.2°C | 13.4°C | 9.7°C | 23.4°C | 6.8°C | 63 mm | 80% | 4.1 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 18.9°C with lows near 11°C (mean 15°C), based on 45 years of NASA POWER data.
June averages 55 mm of rainfall in Chatham, about average for rainfall. The wettest on record was 114 mm in 1997.
The hottest June reached 27.3°C in 2025. The coldest dipped to 3.5°C in 1991.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 2.3°C. Daytime highs moved from 17.9°C to 20.6°C and overnight lows from 10.4°C to 12.2°C over the same span.
June is one of the warmer months of the year in Chatham and about average for rainfall, so plan for around 18.9°C daytime highs and 11°C at night.
Not quite — June is the 9th coolest month in Chatham, averaging 15°C.
For June in Chatham, pack light layers you can adjust through the day, with typical highs of 18.9°C and lows of 11°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 80% — quite humid.
Average wind speed in June is 3.3 m/s. The windiest June on record averaged 4.5 m/s (2012).
The wettest June on record was 1997 with 114 mm. On average, June sees 55 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.
