June is one of the cooler months of the year in Newcastle, with average highs near 17.1°C and lows around 12.9°C (mean 15°C). It is about average for rainfall, averaging 91 mm of rainfall and 76% relative humidity across the period.
June is one of the cooler months of the year in Newcastle. Across 45 years of records, the warmest June in Newcastle was 2017 — when the month averaged 16.4°C — while the coldest was 1985 at 13.2°C. Typical June days reach 17.1°C with nights near 12.9°C. The long-term trend is warming, about 0.2°C per decade.
June is about average for rainfall in Newcastle, averaging 91 mm of rainfall. The wettest June on record was 2007 with 379 mm, while the driest was 2023 at 9 mm.
Relative humidity in Newcastle during June averages 76%. The most humid June was 1989 at 82%, and the least humid was 2004 at 65%.
June receives about 2.6 kWh/m²/day of solar energy in Newcastle. The sunniest Junes were 2004, 2022 and 2023 at 2.9 kWh/m²/day, and the cloudiest were 1998, 2013 and 2017, among others at 2.2.
Average wind speed in Newcastle during June is 3.2 m/s. The windiest June was 2011 at 3.9 m/s, while the calmest was 2015 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.5°C | 14.9°C | 15.3°C | 15.5°C | 14.9°C | +0.4°C |
| Avg High | 16.6°C | 16.9°C | 17.5°C | 17.5°C | 17.3°C | +0.7°C |
| Avg Low | 12.3°C | 12.9°C | 13.1°C | 13.5°C | 12.6°C | +0.3°C |
| Avg Rain | 92 mm | 105 mm | 102 mm | 96 mm | 38 mm | -54 mm |
June temperatures in Newcastle have risen by about 0.8°C between 1981–1985 and 2021–2025.
June has ranged from a record low of 6.1°C (1983) to a record high of 22.8°C (1996).
Rainfall in June is about average for rainfall, averaging 91 mm, with a wettest year of 379 mm.
A quieter season to visit Newcastle
If your dates are flexible, the more temperate months of December and March tend to be the most comfortable for visiting Newcastle. That said, June — with days averaging 17.1°C and nights around 12.9°C (mean 15°C) and higher rainfall (91 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 16.6°C | 14.6°C | 12.7°C | 20.0°C | 9.2°C | 27 mm | 78% | 3.1 m/s | 2.6 |
| 2024 | 16.5°C | 14.5°C | 12.4°C | 19.0°C | 10.0°C | 95 mm | 79% | 3.1 m/s | 2.5 |
| 2023 | 18.4°C | 15.6°C | 12.7°C | 22.5°C | 8.5°C | 9 mm | 68% | 2.9 m/s | 2.9 |
| 2022 | 17.1°C | 14.5°C | 12.0°C | 19.1°C | 8.7°C | 13 mm | 72% | 3.3 m/s | 2.9 |
| 2021 | 17.0°C | 14.7°C | 12.5°C | 19.6°C | 8.5°C | 52 mm | 76% | 3.1 m/s | 2.5 |
| 2020 | 17.9°C | 15.6°C | 13.2°C | 21.8°C | 10.2°C | 32 mm | 75% | 2.9 m/s | 2.7 |
| 2019 | 18.5°C | 16.2°C | 13.9°C | 22.1°C | 8.2°C | 60 mm | 74% | 2.9 m/s | 2.4 |
| 2018 | 17.5°C | 15.5°C | 13.4°C | 19.5°C | 10.6°C | 87 mm | 73% | 3.4 m/s | 2.4 |
| 2017 🔥 | 18.3°C | 16.4°C | 14.5°C | 20.3°C | 10.0°C | 70 mm | 75% | 2.9 m/s | 2.2 |
| 2016 | 18.3°C | 16.0°C | 13.7°C | 21.7°C | 8.7°C | 107 mm | 72% | 3.7 m/s | 2.4 |
| 2015 | 17.1°C | 15.1°C | 13.1°C | 19.5°C | 9.4°C | 38 mm | 78% | 2.6 m/s | 2.6 |
| 2014 | 18.1°C | 16.0°C | 13.8°C | 20.5°C | 10.8°C | 62 mm | 73% | 3.2 m/s | 2.6 |
| 2013 | 17.1°C | 15.3°C | 13.6°C | 20.4°C | 10.3°C | 147 mm | 80% | 3.3 m/s | 2.2 |
| 2012 | 16.7°C | 14.7°C | 12.7°C | 18.8°C | 8.4°C | 128 mm | 78% | 3 m/s | 2.4 |
| 2011 | 16.8°C | 15.0°C | 13.1°C | 19.1°C | 8.0°C | 158 mm | 76% | 3.9 m/s | 2.7 |
| 2010 | 16.8°C | 14.9°C | 13.0°C | 19.4°C | 6.7°C | 99 mm | 76% | 3.2 m/s | 2.7 |
| 2009 | 17.5°C | 15.4°C | 13.3°C | 19.9°C | 9.0°C | 79 mm | 74% | 3.2 m/s | 2.5 |
| 2008 | 17.8°C | 16.1°C | 14.4°C | 19.6°C | 10.9°C | 135 mm | 81% | 3.5 m/s | 2.3 |
| 2007 🌧️ | 16.4°C | 14.5°C | 12.5°C | 20.0°C | 8.3°C | 379 mm | 81% | 3.8 m/s | 2.3 |
| 2006 | 16.8°C | 14.9°C | 13.0°C | 18.6°C | 9.6°C | 132 mm | 76% | 2.9 m/s | 2.6 |
| 2005 | 17.7°C | 15.7°C | 13.7°C | 19.9°C | 9.5°C | 119 mm | 77% | 3.2 m/s | 2.4 |
| 2004 | 18.8°C | 15.6°C | 12.5°C | 22.5°C | 9.5°C | 22 mm | 65% | 3.2 m/s | 2.9 |
| 2003 | 17.9°C | 15.6°C | 13.4°C | 20.8°C | 10.0°C | 32 mm | 76% | 3 m/s | 2.8 |
| 2002 | 17.4°C | 15.2°C | 13.0°C | 21.5°C | 9.9°C | 65 mm | 72% | 3.5 m/s | 2.5 |
| 2001 | 17.8°C | 15.5°C | 13.2°C | 20.5°C | 10.0°C | 10 mm | 77% | 2.8 m/s | 2.6 |
| 2000 | 16.8°C | 14.4°C | 12.0°C | 19.6°C | 8.9°C | 50 mm | 75% | 3.3 m/s | 2.6 |
| 1999 | 17.1°C | 15.3°C | 13.5°C | 19.8°C | 8.4°C | 124 mm | 76% | 3.5 m/s | 2.4 |
| 1998 | 17.0°C | 15.3°C | 13.6°C | 20.0°C | 10.2°C | 133 mm | 80% | 3.7 m/s | 2.2 |
| 1997 | 17.1°C | 15.2°C | 13.3°C | 21.0°C | 10.2°C | 107 mm | 77% | 3 m/s | 2.5 |
| 1996 | 18.0°C | 16.0°C | 14.0°C | 22.8°C | 10.4°C | 102 mm | 75% | 3.1 m/s | 2.4 |
| 1995 | 16.0°C | 14.0°C | 11.9°C | 21.4°C | 8.7°C | 95 mm | 78% | 3.2 m/s | 2.4 |
| 1994 | 16.7°C | 14.5°C | 12.4°C | 19.4°C | 9.6°C | 68 mm | 75% | 3.1 m/s | 2.7 |
| 1993 | 16.3°C | 14.1°C | 11.8°C | 19.1°C | 8.4°C | 82 mm | 73% | 3 m/s | 2.7 |
| 1992 | 16.3°C | 14.1°C | 11.9°C | 18.9°C | 8.2°C | 93 mm | 76% | 3 m/s | 2.6 |
| 1991 | 18.2°C | 16.1°C | 14.0°C | 20.8°C | 10.3°C | 173 mm | 79% | 3.4 m/s | 2.4 |
| 1990 | 15.8°C | 14.0°C | 12.1°C | 17.8°C | 6.9°C | 76 mm | 79% | 3.3 m/s | 2.7 |
| 1989 | 16.4°C | 14.7°C | 13.0°C | 18.5°C | 8.3°C | 259 mm | 82% | 3.5 m/s | 2.2 |
| 1988 | 17.0°C | 15.0°C | 12.9°C | 20.4°C | 9.2°C | 76 mm | 78% | 3.3 m/s | 2.7 |
| 1987 | 18.2°C | 15.9°C | 13.5°C | 21.2°C | 8.2°C | 62 mm | 73% | 2.9 m/s | 2.6 |
| 1986 | 16.8°C | 14.3°C | 11.7°C | 21.8°C | 6.9°C | 50 mm | 71% | 2.9 m/s | 2.8 |
| 1985 ❄️ | 15.4°C | 13.2°C | 10.9°C | 18.8°C | 6.6°C | 74 mm | 78% | 3 m/s | 2.8 |
| 1984 | 17.3°C | 15.0°C | 12.7°C | 20.7°C | 9.5°C | 67 mm | 77% | 2.9 m/s | 2.8 |
| 1983 | 15.8°C | 13.9°C | 11.9°C | 17.7°C | 6.1°C | 68 mm | 77% | 3 m/s | — |
| 1982 | 16.4°C | 14.4°C | 12.4°C | 18.8°C | 9.7°C | 114 mm | 74% | 3.5 m/s | — |
| 1981 | 16.0°C | 13.7°C | 11.5°C | 19.2°C | 7.8°C | 58 mm | 76% | 3.6 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 17.1°C with lows near 12.9°C (mean 15°C), based on 45 years of NASA POWER data.
June averages 91 mm of rainfall in Newcastle, about average for rainfall. The wettest on record was 379 mm in 2007.
The hottest June reached 22.8°C in 1996. The coldest dipped to 6.1°C in 1983.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have risen by about 0.8°C. Daytime highs moved from 16.2°C to 17.1°C and overnight lows from 11.9°C to 12.5°C over the same span.
June is one of the cooler months of the year in Newcastle and about average for rainfall, so plan for around 17.1°C daytime highs and 12.9°C at night.
Not quite — June is the 3rd coolest month in Newcastle, averaging 15°C.
For June in Newcastle, pack light layers you can adjust through the day, with typical highs of 17.1°C and lows of 12.9°C. Bring an umbrella or light rain jacket too.
Relative humidity in June averages 76% — quite humid.
Average wind speed in June is 3.2 m/s. The windiest June on record averaged 3.9 m/s (2011).
The wettest June on record was 2007 with 379 mm. On average, June sees 91 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 Newcastle 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.
