July is one of the cooler months of the year in Streaky Bay, with average highs near 16.1°C and lows around 9.7°C (mean 12.9°C). It is a relatively wet time of year, averaging 49 mm of rainfall and 73% relative humidity across the period.
July is one of the cooler months of the year in Streaky Bay. Across 45 years of records, the warmest July in Streaky Bay was 2017 — when the month averaged 13.9°C — while the coldest were 1982, 1984 and 1997 at 11.8°C. Typical July days reach 16.1°C with nights near 9.7°C. The long-term trend is warming, about 0.2°C per decade.
July is a relatively wet time of year in Streaky Bay, averaging 49 mm of rainfall. The wettest July on record was 1989 with 112 mm, while the driest was 2019 at 4 mm.
Relative humidity in Streaky Bay during July averages 73%. The most humid July was 1984 at 78%, and the least humid were 1994 and 2018 at 68%.
July receives about 2.9 kWh/m²/day of solar energy in Streaky Bay. The sunniest July was 1994 at 3.3 kWh/m²/day, and the cloudiest was 1984 at 2.1.
Average wind speed in Streaky Bay during July is 4.2 m/s. The windiest July was 2021 at 5.2 m/s, while the calmest was 2001 at 3.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.4°C | 12.9°C | 13.1°C | 13.1°C | 13.1°C | +0.7°C |
| Avg High | 15.5°C | 16.0°C | 16.3°C | 16.3°C | 16.5°C | +1°C |
| Avg Low | 9.4°C | 9.7°C | 9.9°C | 9.9°C | 9.8°C | +0.4°C |
| Avg Rain | 67 mm | 57 mm | 53 mm | 35 mm | 22 mm | -45 mm |
July temperatures in Streaky Bay have risen by about 0.9°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 4°C (1986) to a record high of 23.8°C (2017).
Rainfall in July is a relatively wet time of year, averaging 49 mm, with a wettest year of 112 mm.
A quieter season to visit Streaky Bay
If your dates are flexible, the more temperate months of January and February tend to be the most comfortable for visiting Streaky Bay. That said, July — with days averaging 16.1°C and nights around 9.7°C (mean 12.9°C) and moderate rainfall (49 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 | 16.0°C | 13.1°C | 10.3°C | 19.0°C | 6.9°C | 41 mm | 70% | 5 m/s | 2.8 |
| 2024 | 16.4°C | 12.9°C | 9.4°C | 20.8°C | 4.0°C | 16 mm | 70% | 4.2 m/s | 3 |
| 2023 | 17.2°C | 13.7°C | 10.1°C | 21.7°C | 5.6°C | 7 mm | 72% | 4 m/s | 3.1 |
| 2022 | 16.4°C | 12.9°C | 9.4°C | 21.3°C | 4.7°C | 14 mm | 70% | 3.8 m/s | 2.9 |
| 2021 | 16.2°C | 13.3°C | 10.4°C | 20.1°C | 6.9°C | 30 mm | 71% | 5.2 m/s | 2.8 |
| 2020 | 16.6°C | 12.9°C | 9.2°C | 20.2°C | 5.3°C | 22 mm | 72% | 3.6 m/s | 3.2 |
| 2019 | 17.0°C | 13.6°C | 10.2°C | 22.4°C | 6.2°C | 4 mm | 75% | 3.9 m/s | 3 |
| 2018 | 17.4°C | 13.8°C | 10.3°C | 22.0°C | 5.8°C | 15 mm | 68% | 4.5 m/s | 3.1 |
| 2017 🔥 | 17.2°C | 13.9°C | 10.5°C | 23.8°C | 6.2°C | 13 mm | 69% | 4.7 m/s | 2.9 |
| 2016 | 16.1°C | 13.0°C | 10.0°C | 23.3°C | 4.5°C | 17 mm | 70% | 4.5 m/s | 2.8 |
| 2015 | 15.8°C | 12.6°C | 9.4°C | 18.8°C | 4.2°C | 8 mm | 71% | 4.1 m/s | 2.9 |
| 2014 | 15.7°C | 12.8°C | 9.8°C | 18.9°C | 6.1°C | 64 mm | 77% | 4.6 m/s | 2.9 |
| 2013 | 16.4°C | 13.4°C | 10.4°C | 19.2°C | 6.4°C | 80 mm | 75% | 4.5 m/s | 2.9 |
| 2012 | 15.3°C | 12.2°C | 9.0°C | 18.4°C | 4.9°C | 37 mm | 75% | 3.6 m/s | 2.9 |
| 2011 | 16.3°C | 13.3°C | 10.4°C | 21.3°C | 6.6°C | 58 mm | 74% | 3.8 m/s | 2.8 |
| 2010 | 15.6°C | 12.4°C | 9.1°C | 18.4°C | 4.8°C | 54 mm | 76% | 3.8 m/s | 2.9 |
| 2009 | 16.3°C | 13.7°C | 11.1°C | 19.6°C | 7.2°C | 92 mm | 76% | 4.6 m/s | 2.8 |
| 2008 | 16.0°C | 13.0°C | 10.0°C | 19.7°C | 4.7°C | 69 mm | 72% | 4.8 m/s | 2.9 |
| 2007 | 16.4°C | 13.0°C | 9.6°C | 22.0°C | 5.2°C | 31 mm | 72% | 4.3 m/s | 3 |
| 2006 | 15.7°C | 12.5°C | 9.3°C | 18.9°C | 5.5°C | 47 mm | 75% | 4.1 m/s | 2.7 |
| 2005 | 16.0°C | 12.9°C | 9.7°C | 20.5°C | 4.6°C | 48 mm | 77% | 3.6 m/s | 2.9 |
| 2004 | 15.6°C | 12.7°C | 9.8°C | 19.9°C | 5.7°C | 54 mm | 74% | 4 m/s | 2.7 |
| 2003 | 16.6°C | 13.1°C | 9.5°C | 20.2°C | 6.0°C | 34 mm | 72% | 4.5 m/s | 3.2 |
| 2002 | 17.3°C | 13.6°C | 10.0°C | 21.4°C | 5.1°C | 53 mm | 72% | 4.6 m/s | 2.9 |
| 2001 | 16.2°C | 12.9°C | 9.6°C | 21.2°C | 6.9°C | 34 mm | 77% | 3.2 m/s | 2.8 |
| 2000 | 16.8°C | 13.5°C | 10.2°C | 21.6°C | 7.4°C | 70 mm | 72% | 4.8 m/s | 2.9 |
| 1999 | 17.2°C | 13.6°C | 9.9°C | 21.5°C | 6.7°C | 27 mm | 70% | 3.9 m/s | 3.1 |
| 1998 | 14.7°C | 11.9°C | 9.2°C | 18.2°C | 5.4°C | 88 mm | 75% | 4.1 m/s | 2.7 |
| 1997 | 15.7°C | 11.8°C | 7.8°C | 19.8°C | 4.3°C | 21 mm | 71% | 3.7 m/s | 3.2 |
| 1996 | 15.9°C | 13.2°C | 10.6°C | 19.8°C | 6.8°C | 82 mm | 75% | 4.6 m/s | 2.8 |
| 1995 | 15.5°C | 12.8°C | 10.1°C | 17.9°C | 4.5°C | 90 mm | 75% | 5.1 m/s | 2.8 |
| 1994 | 17.4°C | 13.3°C | 9.2°C | 21.1°C | 7.0°C | 37 mm | 68% | 3.8 m/s | 3.3 |
| 1993 | 16.2°C | 13.1°C | 10.0°C | 22.8°C | 6.6°C | 33 mm | 72% | 4.3 m/s | 2.9 |
| 1992 | 16.5°C | 13.3°C | 10.2°C | 19.3°C | 7.1°C | 35 mm | 73% | 3.9 m/s | 3.2 |
| 1991 | 16.0°C | 12.9°C | 9.8°C | 19.8°C | 6.5°C | 80 mm | 76% | 3.8 m/s | 2.9 |
| 1990 | 15.3°C | 12.7°C | 10.1°C | 19.9°C | 7.5°C | 78 mm | 75% | 4.7 m/s | 3 |
| 1989 🌧️ | 14.6°C | 12.0°C | 9.5°C | 18.2°C | 5.4°C | 112 mm | 77% | 4.6 m/s | 2.9 |
| 1988 | 16.3°C | 13.3°C | 10.3°C | 18.8°C | 7.2°C | 40 mm | 71% | 4.3 m/s | 2.9 |
| 1987 | 16.1°C | 12.9°C | 9.7°C | 20.4°C | 5.8°C | 63 mm | 73% | 4.3 m/s | 2.9 |
| 1986 | 14.8°C | 12.0°C | 9.3°C | 17.6°C | 4.0°C | 102 mm | 76% | 4.6 m/s | 2.9 |
| 1985 | 16.7°C | 13.4°C | 10.0°C | 20.7°C | 6.6°C | 32 mm | 69% | 4 m/s | 3 |
| 1984 | 14.5°C | 11.8°C | 9.1°C | 18.4°C | 5.6°C | 83 mm | 78% | 4.3 m/s | 2.1 |
| 1983 | 15.0°C | 11.9°C | 8.8°C | 17.7°C | 4.9°C | 84 mm | 73% | 4.6 m/s | — |
| 1982 ❄️ | 15.3°C | 11.8°C | 8.4°C | 18.2°C | 4.2°C | 28 mm | 72% | 3.6 m/s | — |
| 1981 | 15.9°C | 12.6°C | 9.3°C | 19.6°C | 6.2°C | 57 mm | 72% | 4.7 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 16.1°C with lows near 9.7°C (mean 12.9°C), based on 45 years of NASA POWER data.
July averages 49 mm of rainfall in Streaky Bay, a relatively wet time of year. The wettest on record was 112 mm in 1989.
The hottest July reached 23.8°C in 2017. The coldest dipped to 4°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.9°C. Daytime highs moved from 15.5°C to 16.4°C and overnight lows from 9.1°C to 9.9°C over the same span.
July is one of the cooler months of the year in Streaky Bay and a relatively wet time of year, so plan for around 16.1°C daytime highs and 9.7°C at night.
Yes — July is the coldest month of the year in Streaky Bay, averaging 12.9°C.
For July in Streaky Bay, pack light layers you can adjust through the day, with typical highs of 16.1°C and lows of 9.7°C.
Relative humidity in July averages 73% — moderately humid.
Average wind speed in July is 4.2 m/s. The windiest July on record averaged 5.2 m/s (2021).
The wettest July on record was 1989 with 112 mm. On average, July sees 49 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 Streaky Bay 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.
