July is one of the cooler months of the year in Newcastle, with average highs near 16.5°C and lows around 11.8°C (mean 14.2°C). It is one of the drier months, averaging 67 mm of rainfall and 74% relative humidity across the period.
July is one of the cooler months of the year in Newcastle. Across 45 years of records, the warmest July in Newcastle was 2023 — when the month averaged 15.7°C — while the coldest were 1995 and 2007 at 12.8°C. Typical July days reach 16.5°C with nights near 11.8°C. The long-term trend is warming, about 0.4°C per decade.
July is one of the drier months in Newcastle, averaging 67 mm of rainfall. The wettest July on record was 2022 with 204 mm, while the driest was 2018 at 3 mm.
Relative humidity in Newcastle during July averages 74%. The most humid July was 1993 at 81%, and the least humid was 2018 at 62%.
July receives about 2.8 kWh/m²/day of solar energy in Newcastle. The sunniest July was 2018 at 3.4 kWh/m²/day, and the cloudiest was 1984 at 1.7.
Average wind speed in Newcastle during July is 3.2 m/s. The windiest Julys were 2007, 2011 and 2025, among others at 3.6 m/s, while the calmest was 1993 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.4°C | 13.9°C | 14.3°C | 14.6°C | 14.7°C | +1.3°C |
| Avg High | 15.7°C | 16.1°C | 16.6°C | 17.2°C | 17.0°C | +1.3°C |
| Avg Low | 11.2°C | 11.7°C | 12.0°C | 12.1°C | 12.4°C | +1.2°C |
| Avg Rain | 77 mm | 78 mm | 61 mm | 46 mm | 76 mm | 0 mm |
July temperatures in Newcastle have risen by about 1.3°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 5.6°C (1984) to a record high of 22.9°C (2016).
Rainfall in July is one of the drier months, averaging 67 mm, with a wettest year of 204 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, July — with days averaging 16.5°C and nights around 11.8°C (mean 14.2°C) and moderate rainfall (67 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 | 16.5°C | 14.3°C | 12.2°C | 19.6°C | 9.0°C | 85 mm | 75% | 3.6 m/s | 2.6 |
| 2024 | 16.2°C | 14.2°C | 12.2°C | 19.6°C | 8.6°C | 23 mm | 75% | 3.5 m/s | 2.8 |
| 2023 🔥 | 18.7°C | 15.7°C | 12.8°C | 22.5°C | 9.8°C | 18 mm | 69% | 2.8 m/s | 3 |
| 2022 🌧️ | 16.4°C | 14.7°C | 12.9°C | 19.0°C | 9.2°C | 204 mm | 79% | 3.4 m/s | 2.5 |
| 2021 | 16.8°C | 14.3°C | 11.8°C | 21.7°C | 8.6°C | 21 mm | 72% | 3.3 m/s | 2.9 |
| 2020 | 17.1°C | 14.8°C | 12.5°C | 21.0°C | 10.0°C | 107 mm | 76% | 3 m/s | 2.6 |
| 2019 | 18.4°C | 15.6°C | 12.8°C | 21.3°C | 9.8°C | 19 mm | 66% | 3 m/s | 3.1 |
| 2018 | 18.2°C | 14.9°C | 11.7°C | 22.6°C | 8.6°C | 3 mm | 62% | 2.9 m/s | 3.4 |
| 2017 | 18.1°C | 15.1°C | 12.1°C | 21.9°C | 10.2°C | 9 mm | 64% | 3.1 m/s | 3.3 |
| 2016 | 17.9°C | 15.2°C | 12.4°C | 22.9°C | 8.6°C | 42 mm | 72% | 3.3 m/s | 2.8 |
| 2015 | 16.1°C | 13.5°C | 10.9°C | 18.7°C | 6.7°C | 15 mm | 74% | 3.2 m/s | 2.9 |
| 2014 | 17.2°C | 14.5°C | 11.7°C | 21.7°C | 9.3°C | 24 mm | 69% | 3.3 m/s | 3 |
| 2013 | 17.4°C | 14.9°C | 12.5°C | 20.8°C | 9.8°C | 31 mm | 76% | 2.7 m/s | 2.9 |
| 2012 | 16.2°C | 14.3°C | 12.4°C | 18.3°C | 9.2°C | 61 mm | 77% | 3.5 m/s | 2.8 |
| 2011 | 15.7°C | 13.6°C | 11.5°C | 19.4°C | 7.5°C | 158 mm | 77% | 3.6 m/s | 2.9 |
| 2010 | 16.4°C | 14.6°C | 12.8°C | 20.3°C | 9.6°C | 98 mm | 79% | 3 m/s | 2.3 |
| 2009 | 16.6°C | 14.3°C | 12.0°C | 20.3°C | 9.9°C | 53 mm | 71% | 3.2 m/s | 2.9 |
| 2008 | 15.9°C | 13.6°C | 11.3°C | 19.2°C | 8.0°C | 63 mm | 74% | 3.4 m/s | 2.9 |
| 2007 | 15.0°C | 12.8°C | 10.5°C | 18.6°C | 6.5°C | 37 mm | 77% | 3.6 m/s | 3 |
| 2006 | 16.9°C | 14.7°C | 12.6°C | 20.8°C | 9.3°C | 105 mm | 74% | 3.1 m/s | 2.9 |
| 2005 | 17.2°C | 14.8°C | 12.3°C | 19.4°C | 9.9°C | 24 mm | 74% | 3 m/s | 3 |
| 2004 | 17.2°C | 14.7°C | 12.3°C | 22.3°C | 9.3°C | 76 mm | 70% | 3.2 m/s | 2.8 |
| 2003 | 16.3°C | 14.0°C | 11.7°C | 19.6°C | 8.1°C | 67 mm | 75% | 3.1 m/s | 2.9 |
| 2002 | 17.2°C | 14.4°C | 11.5°C | 20.0°C | 9.0°C | 31 mm | 65% | 3.3 m/s | 3.2 |
| 2001 | 16.6°C | 15.0°C | 13.3°C | 19.1°C | 9.9°C | 105 mm | 79% | 3.3 m/s | 2.4 |
| 2000 | 16.9°C | 14.5°C | 12.1°C | 20.8°C | 7.6°C | 52 mm | 72% | 3.3 m/s | 2.9 |
| 1999 | 16.7°C | 15.0°C | 13.3°C | 18.3°C | 10.4°C | 154 mm | 77% | 3.1 m/s | 2.6 |
| 1998 | 16.2°C | 14.3°C | 12.4°C | 20.5°C | 8.5°C | 103 mm | 79% | 3.6 m/s | 2.5 |
| 1997 | 16.0°C | 14.3°C | 12.6°C | 19.1°C | 9.7°C | 145 mm | 78% | 3.1 m/s | 2.8 |
| 1996 | 16.1°C | 13.6°C | 11.2°C | 19.1°C | 8.9°C | 54 mm | 74% | 3.4 m/s | 2.7 |
| 1995 ❄️ | 15.5°C | 12.8°C | 10.1°C | 18.5°C | 7.5°C | 6 mm | 68% | 3.4 m/s | 2.9 |
| 1994 | 16.3°C | 13.7°C | 11.2°C | 19.4°C | 8.8°C | 49 mm | 73% | 2.9 m/s | 3.1 |
| 1993 | 16.8°C | 14.8°C | 12.7°C | 19.9°C | 10.0°C | 90 mm | 81% | 2.4 m/s | 2.5 |
| 1992 | 16.2°C | 13.8°C | 11.4°C | 20.3°C | 8.0°C | 34 mm | 72% | 3.2 m/s | 3.1 |
| 1991 | 15.4°C | 13.2°C | 10.9°C | 18.2°C | 7.3°C | 58 mm | 76% | 3.3 m/s | 2.8 |
| 1990 | 15.7°C | 13.5°C | 11.3°C | 21.7°C | 8.0°C | 91 mm | 79% | 3.3 m/s | 2.8 |
| 1989 | 15.0°C | 12.9°C | 10.8°C | 19.9°C | 7.5°C | 44 mm | 79% | 3.5 m/s | 2.8 |
| 1988 | 16.7°C | 14.6°C | 12.5°C | 18.5°C | 8.2°C | 106 mm | 77% | 3 m/s | 2.9 |
| 1987 | 16.1°C | 13.7°C | 11.2°C | 18.9°C | 7.9°C | 89 mm | 72% | 2.9 m/s | 3 |
| 1986 | 15.9°C | 13.2°C | 10.6°C | 19.0°C | 6.2°C | 31 mm | 73% | 3.1 m/s | 2.9 |
| 1985 | 15.7°C | 13.5°C | 11.3°C | 19.7°C | 7.9°C | 96 mm | 75% | 3.4 m/s | 2.9 |
| 1984 | 15.0°C | 12.9°C | 10.8°C | 17.9°C | 5.6°C | 125 mm | 78% | 3.6 m/s | 1.7 |
| 1983 | 15.2°C | 13.0°C | 10.8°C | 18.4°C | 8.5°C | 47 mm | 77% | 3.2 m/s | — |
| 1982 | 15.5°C | 13.4°C | 11.3°C | 16.7°C | 7.7°C | 115 mm | 74% | 3.4 m/s | — |
| 1981 | 16.2°C | 13.7°C | 11.1°C | 18.7°C | 8.4°C | 37 mm | 72% | 3.5 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 16.5°C with lows near 11.8°C (mean 14.2°C), based on 45 years of NASA POWER data.
July averages 67 mm of rainfall in Newcastle, one of the drier months. The wettest on record was 204 mm in 2022.
The hottest July reached 22.9°C in 2016. The coldest dipped to 5.6°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.3°C. Daytime highs moved from 15.5°C to 16.9°C and overnight lows from 11.1°C to 12.4°C over the same span.
July is one of the cooler months of the year in Newcastle and one of the drier months, so plan for around 16.5°C daytime highs and 11.8°C at night.
Yes — July is the coldest month of the year in Newcastle, averaging 14.2°C.
For July in Newcastle, pack light layers you can adjust through the day, with typical highs of 16.5°C and lows of 11.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 74% — moderately humid.
Average wind speed in July is 3.2 m/s. The windiest July on record averaged 3.6 m/s (1984).
The wettest July on record was 2022 with 204 mm. On average, July sees 67 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 July, 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 July specifically, along with year-by-year records and how the month has changed over the decades.
