July is one of the cooler months of the year in Timaru, with average highs near 9°C and lows around 5°C (mean 7°C). It is about average for rainfall, averaging 58 mm of rainfall and 82% relative humidity across the period.
July is one of the cooler months of the year in Timaru. Across 45 years of records, the warmest Julys in Timaru were 2013 and 2019 — when the month averaged 8.6°C — while the coldest was 1995 at 4.9°C. Typical July days reach 9°C with nights near 5°C. The long-term trend is warming, about 0.3°C per decade.
July is about average for rainfall in Timaru, averaging 58 mm of rainfall. The wettest July on record was 2022 with 142 mm, while the driest were 2002, 2003 and 2015 at 21 mm.
Relative humidity in Timaru during July averages 82%. The most humid July was 1984 at 86%, and the least humid were 2001 and 2016 at 78%.
July receives about 1.5 kWh/m²/day of solar energy in Timaru. The sunniest Julys were 1989 and 2004 at 1.8 kWh/m²/day, and the cloudiest was 1984 at 1.2.
Average wind speed in Timaru during July is 3.5 m/s. The windiest July was 1986 at 4.3 m/s, while the calmest was 1993 at 2.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 6.6°C | 6.5°C | 6.9°C | 7.5°C | 7.7°C | +1.1°C |
| Avg High | 8.5°C | 8.5°C | 8.9°C | 9.6°C | 9.8°C | +1.3°C |
| Avg Low | 4.8°C | 4.6°C | 4.9°C | 5.3°C | 5.7°C | +0.9°C |
| Avg Rain | 78 mm | 60 mm | 42 mm | 49 mm | 69 mm | -9 mm |
July temperatures in Timaru have risen by about 1°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 0.5°C (1995) to a record high of 15°C (2024).
Rainfall in July is about average for rainfall, averaging 58 mm, with a wettest year of 142 mm.
A quieter season to visit Timaru
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Timaru. That said, July — with days averaging 9°C and nights around 5°C (mean 7°C) and moderate rainfall (58 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 | 9.9°C | 7.9°C | 5.9°C | 14.1°C | 3.6°C | 37 mm | 85% | 2.8 m/s | 1.6 |
| 2024 | 9.5°C | 7.5°C | 5.5°C | 15.0°C | 3.6°C | 75 mm | 85% | 3.4 m/s | 1.5 |
| 2023 | 10.4°C | 8.4°C | 6.4°C | 13.5°C | 4.1°C | 80 mm | 81% | 4 m/s | 1.6 |
| 2022 🌧️ | 8.8°C | 7.1°C | 5.3°C | 13.7°C | 3.0°C | 142 mm | 83% | 4.1 m/s | 1.4 |
| 2021 | 10.0°C | 7.7°C | 5.5°C | 12.8°C | 3.3°C | 53 mm | 84% | 3.3 m/s | 1.6 |
| 2020 | 9.9°C | 7.8°C | 5.6°C | 14.4°C | 3.1°C | 28 mm | 82% | 3.4 m/s | 1.6 |
| 2019 | 10.7°C | 8.6°C | 6.4°C | 14.9°C | 4.8°C | 66 mm | 84% | 3.2 m/s | 1.3 |
| 2018 | 10.5°C | 8.2°C | 5.8°C | 13.8°C | 4.0°C | 26 mm | 82% | 3.2 m/s | 1.6 |
| 2017 | 8.2°C | 6.4°C | 4.6°C | 11.4°C | 1.6°C | 139 mm | 86% | 3.6 m/s | 1.4 |
| 2016 | 9.9°C | 7.6°C | 5.2°C | 12.5°C | 3.0°C | 38 mm | 78% | 3.8 m/s | 1.7 |
| 2015 | 8.8°C | 6.6°C | 4.5°C | 13.1°C | 1.8°C | 21 mm | 80% | 3.6 m/s | 1.6 |
| 2014 | 9.2°C | 7.4°C | 5.5°C | 14.0°C | 3.6°C | 27 mm | 82% | 3.9 m/s | 1.5 |
| 2013 🔥 | 10.9°C | 8.6°C | 6.3°C | 14.7°C | 4.0°C | 28 mm | 80% | 3.3 m/s | 1.7 |
| 2012 | 9.9°C | 7.8°C | 5.7°C | 14.2°C | 2.6°C | 77 mm | 84% | 2.8 m/s | 1.5 |
| 2011 | 9.1°C | 6.8°C | 4.5°C | 11.9°C | 0.7°C | 23 mm | 78% | 4.2 m/s | 1.7 |
| 2010 | 8.8°C | 6.8°C | 4.9°C | 10.9°C | 2.8°C | 47 mm | 85% | 2.8 m/s | 1.6 |
| 2009 | 8.2°C | 6.2°C | 4.3°C | 12.8°C | 1.8°C | 35 mm | 82% | 3.6 m/s | 1.7 |
| 2008 | 8.7°C | 6.9°C | 5.2°C | 12.3°C | 2.6°C | 113 mm | 85% | 4.1 m/s | 1.3 |
| 2007 | 8.1°C | 6.3°C | 4.4°C | 13.4°C | 1.0°C | 65 mm | 84% | 3.2 m/s | 1.5 |
| 2006 | 8.9°C | 7.0°C | 5.0°C | 12.1°C | 2.5°C | 32 mm | 82% | 3.4 m/s | 1.5 |
| 2005 | 10.4°C | 8.1°C | 5.8°C | 13.8°C | 3.4°C | 36 mm | 82% | 3.4 m/s | 1.5 |
| 2004 | 8.8°C | 6.4°C | 4.1°C | 10.8°C | 2.8°C | 26 mm | 80% | 3.2 m/s | 1.8 |
| 2003 | 9.1°C | 6.9°C | 4.6°C | 12.0°C | 1.2°C | 21 mm | 79% | 3.4 m/s | 1.6 |
| 2002 | 8.7°C | 6.8°C | 5.0°C | 13.4°C | 3.0°C | 21 mm | 84% | 3.2 m/s | 1.5 |
| 2001 | 8.4°C | 6.4°C | 4.4°C | 12.3°C | 2.3°C | 47 mm | 78% | 3.3 m/s | 1.7 |
| 2000 | 9.9°C | 8.0°C | 6.0°C | 12.8°C | 3.4°C | 21 mm | 85% | 3 m/s | 1.5 |
| 1999 | 9.2°C | 7.3°C | 5.4°C | 12.6°C | 3.3°C | 80 mm | 84% | 3.7 m/s | 1.3 |
| 1998 | 9.7°C | 7.6°C | 5.5°C | 13.9°C | 4.1°C | 40 mm | 84% | 3.2 m/s | 1.5 |
| 1997 | 8.9°C | 6.7°C | 4.4°C | 11.7°C | 2.5°C | 22 mm | 79% | 3.5 m/s | 1.5 |
| 1996 | 7.5°C | 6.1°C | 4.6°C | 11.3°C | 2.6°C | 67 mm | 86% | 3.4 m/s | 1.4 |
| 1995 ❄️ | 6.9°C | 4.9°C | 3.0°C | 9.4°C | 0.5°C | 57 mm | 78% | 4.2 m/s | 1.5 |
| 1994 | 7.9°C | 6.1°C | 4.4°C | 11.5°C | 2.3°C | 113 mm | 83% | 4 m/s | 1.5 |
| 1993 | 9.1°C | 7.0°C | 4.9°C | 12.7°C | 2.7°C | 40 mm | 83% | 2.7 m/s | 1.6 |
| 1992 | 8.4°C | 6.4°C | 4.5°C | 11.9°C | 2.3°C | 63 mm | 82% | 3.7 m/s | 1.4 |
| 1991 | 7.8°C | 5.7°C | 3.7°C | 10.4°C | 1.4°C | 59 mm | 81% | 2.9 m/s | 1.7 |
| 1990 | 9.1°C | 7.1°C | 5.2°C | 12.5°C | 3.7°C | 56 mm | 84% | 3.2 m/s | 1.5 |
| 1989 | 8.1°C | 6.3°C | 4.5°C | 11.0°C | 2.1°C | 44 mm | 81% | 3.3 m/s | 1.8 |
| 1988 | 9.2°C | 7.3°C | 5.3°C | 12.5°C | 2.6°C | 72 mm | 83% | 3.8 m/s | 1.6 |
| 1987 | 8.0°C | 6.3°C | 4.6°C | 10.0°C | 2.6°C | 45 mm | 85% | 3.7 m/s | 1.5 |
| 1986 | 8.2°C | 6.4°C | 4.6°C | 11.8°C | 2.7°C | 119 mm | 82% | 4.3 m/s | 1.6 |
| 1985 | 9.5°C | 7.5°C | 5.5°C | 12.5°C | 2.5°C | 80 mm | 84% | 3.4 m/s | 1.6 |
| 1984 | 8.8°C | 7.1°C | 5.5°C | 13.3°C | 2.3°C | 117 mm | 86% | 3.2 m/s | 1.2 |
| 1983 | 7.6°C | 5.8°C | 3.9°C | 11.9°C | 1.8°C | 95 mm | 85% | 3.5 m/s | — |
| 1982 | 8.1°C | 6.2°C | 4.3°C | 11.7°C | 2.4°C | 30 mm | 82% | 3.5 m/s | — |
| 1981 | 8.6°C | 6.9°C | 5.2°C | 12.9°C | 3.1°C | 102 mm | 84% | 3.5 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 9°C with lows near 5°C (mean 7°C), based on 45 years of NASA POWER data.
July averages 58 mm of rainfall in Timaru, about average for rainfall. The wettest on record was 142 mm in 2022.
The hottest July reached 15°C in 2024. The coldest dipped to 0.5°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1°C. Daytime highs moved from 8.5°C to 9.7°C and overnight lows from 4.9°C to 5.7°C over the same span.
July is one of the cooler months of the year in Timaru and about average for rainfall, so plan for around 9°C daytime highs and 5°C at night.
Yes — July is the coldest month of the year in Timaru, averaging 7°C.
For July in Timaru, pack warm layers and a jacket for chilly mornings, with typical highs of 9°C and lows of 5°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 82% — quite humid.
Average wind speed in July is 3.5 m/s. The windiest July on record averaged 4.3 m/s (1986).
The wettest July on record was 2022 with 142 mm. On average, July sees 58 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 Timaru 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.
