January is one of the warmer months of the year in Streaky Bay, with average highs near 27.2°C and lows around 17.2°C (mean 22.2°C). It is one of the drier months, averaging 12 mm of rainfall and 60% relative humidity across the period.
January is one of the warmer months of the year in Streaky Bay. Across 45 years of records, the warmest January in Streaky Bay was 2001 — when the month averaged 25°C — while the coldest was 1992 at 19.6°C. Typical January days reach 27.2°C with nights near 17.2°C. The long-term trend is warming, about 0.2°C per decade.
January is one of the drier months in Streaky Bay, averaging 12 mm of rainfall. The wettest January on record was 1995 with 81 mm, while the driest were 2017, 2018 and 2019 at 0 mm.
Relative humidity in Streaky Bay during January averages 60%. The most humid January was 2022 at 69%, and the least humid was 2003 at 53%.
January receives about 7.9 kWh/m²/day of solar energy in Streaky Bay. The sunniest January was 2009 at 8.9 kWh/m²/day, and the cloudiest was 2006 at 7.1.
Average wind speed in Streaky Bay during January is 4.7 m/s. The windiest Januarys were 1989 and 2006 at 5.2 m/s, while the calmest was 1993 at 4.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.9°C | 21.6°C | 22.4°C | 23.0°C | 22.1°C | +0.2°C |
| Avg High | 27.1°C | 26.6°C | 27.4°C | 28.0°C | 27.0°C | -0.1°C |
| Avg Low | 16.6°C | 16.6°C | 17.3°C | 17.9°C | 17.3°C | +0.7°C |
| Avg Rain | 9 mm | 19 mm | 12 mm | 10 mm | 13 mm | +4 mm |
January temperatures in Streaky Bay have stayed relatively stable across the record.
January has ranged from a record low of 11.8°C (1987) to a record high of 42.9°C (2006).
Rainfall in January is one of the drier months, averaging 12 mm, with a wettest year of 81 mm.
One of the best times to visit Streaky Bay
January is one of the best times to visit Streaky Bay. Expect days averaging 27.2°C and nights around 17.2°C (mean 22.2°C) — warmer than Streaky Bay's yearly average — with low rainfall (12 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 | 28.7°C | 23.4°C | 18.2°C | 37.2°C | 15.3°C | 5 mm | 57% | 4.6 m/s | 8.2 |
| 2024 | 27.7°C | 22.5°C | 17.3°C | 38.0°C | 13.7°C | 26 mm | 62% | 4.5 m/s | 7.4 |
| 2023 | 26.7°C | 21.8°C | 17.0°C | 39.4°C | 14.8°C | 11 mm | 63% | 5 m/s | 7.8 |
| 2022 | 25.7°C | 21.5°C | 17.4°C | 34.2°C | 14.7°C | 9 mm | 69% | 4.4 m/s | 7.3 |
| 2021 | 25.9°C | 21.3°C | 16.6°C | 41.3°C | 13.8°C | 11 mm | 62% | 5 m/s | 7.7 |
| 2020 | 27.0°C | 22.0°C | 17.0°C | 41.6°C | 13.9°C | 14 mm | 60% | 4.7 m/s | 7.8 |
| 2019 | 29.0°C | 23.7°C | 18.4°C | 42.5°C | 15.0°C | 0 mm | 58% | 4.5 m/s | 7.6 |
| 2018 | 29.1°C | 24.0°C | 18.8°C | 39.7°C | 15.3°C | 0 mm | 55% | 4.9 m/s | 7.3 |
| 2017 | 28.1°C | 22.8°C | 17.5°C | 37.0°C | 14.5°C | 0 mm | 60% | 4.6 m/s | 7.5 |
| 2016 | 27.4°C | 22.7°C | 18.1°C | 36.7°C | 15.6°C | 14 mm | 61% | 4.8 m/s | 7.7 |
| 2015 | 25.8°C | 21.3°C | 16.9°C | 36.4°C | 14.3°C | 16 mm | 63% | 5.1 m/s | 7.5 |
| 2014 | 29.2°C | 23.7°C | 18.3°C | 39.9°C | 14.2°C | 27 mm | 57% | 4.8 m/s | 7.9 |
| 2013 | 27.3°C | 22.4°C | 17.5°C | 39.2°C | 15.2°C | 5 mm | 57% | 4.9 m/s | 8.4 |
| 2012 | 27.5°C | 22.7°C | 18.0°C | 39.8°C | 14.9°C | 18 mm | 60% | 4.9 m/s | 7.7 |
| 2011 | 28.0°C | 22.9°C | 17.9°C | 41.4°C | 14.6°C | 7 mm | 62% | 4.6 m/s | 8.1 |
| 2010 | 28.5°C | 23.3°C | 18.0°C | 38.4°C | 14.0°C | 12 mm | 55% | 4.6 m/s | 8.3 |
| 2009 | 28.5°C | 22.8°C | 17.1°C | 40.2°C | 13.4°C | 1 mm | 58% | 4.5 m/s | 8.9 |
| 2008 | 27.1°C | 21.9°C | 16.7°C | 37.1°C | 14.8°C | 5 mm | 63% | 5 m/s | 8.5 |
| 2007 | 27.7°C | 22.7°C | 17.7°C | 38.7°C | 15.2°C | 9 mm | 60% | 4.5 m/s | 8.1 |
| 2006 | 28.8°C | 24.0°C | 19.2°C | 42.9°C | 16.1°C | 40 mm | 62% | 5.2 m/s | 7.1 |
| 2005 | 26.1°C | 21.3°C | 16.5°C | 35.7°C | 13.1°C | 7 mm | 60% | 4.7 m/s | 7.8 |
| 2004 | 23.7°C | 19.7°C | 15.6°C | 37.1°C | 13.8°C | 4 mm | 65% | 4.8 m/s | 8.2 |
| 2003 | 28.5°C | 22.9°C | 17.3°C | 39.1°C | 13.2°C | 13 mm | 53% | 4.8 m/s | 7.9 |
| 2002 | 26.0°C | 21.1°C | 16.2°C | 36.8°C | 13.1°C | 7 mm | 60% | 4.7 m/s | 7.8 |
| 2001 🔥 | 30.5°C | 25.0°C | 19.5°C | 41.5°C | 16.4°C | 10 mm | 56% | 4.4 m/s | 8.2 |
| 2000 | 26.9°C | 22.3°C | 17.7°C | 39.4°C | 13.4°C | 23 mm | 57% | 4.7 m/s | 7.3 |
| 1999 | 28.6°C | 23.3°C | 17.9°C | 39.3°C | 14.8°C | 8 mm | 60% | 5 m/s | 8.3 |
| 1998 | 26.2°C | 21.4°C | 16.6°C | 36.8°C | 14.1°C | 7 mm | 63% | 4.9 m/s | 8.3 |
| 1997 | 28.2°C | 22.6°C | 17.0°C | 37.9°C | 13.7°C | 22 mm | 57% | 5 m/s | 8.1 |
| 1996 | 25.0°C | 20.1°C | 15.1°C | 38.8°C | 12.7°C | 1 mm | 62% | 5.1 m/s | 8.4 |
| 1995 🌧️ | 26.5°C | 21.6°C | 16.7°C | 35.7°C | 12.9°C | 81 mm | 64% | 4.6 m/s | 7.7 |
| 1994 | 24.9°C | 20.4°C | 15.8°C | 37.9°C | 13.6°C | 2 mm | 63% | 5 m/s | 8.2 |
| 1993 | 27.2°C | 22.1°C | 17.0°C | 38.4°C | 13.7°C | 53 mm | 66% | 4.2 m/s | 7.8 |
| 1992 ❄️ | 24.2°C | 19.6°C | 14.9°C | 34.6°C | 12.2°C | 1 mm | 65% | 4.8 m/s | 8.3 |
| 1991 | 27.7°C | 22.7°C | 17.7°C | 38.8°C | 14.3°C | 5 mm | 60% | 4.7 m/s | 8.5 |
| 1990 | 27.0°C | 22.1°C | 17.2°C | 40.0°C | 14.6°C | 7 mm | 59% | 4.8 m/s | 7.5 |
| 1989 | 26.5°C | 21.4°C | 16.3°C | 37.1°C | 12.2°C | 5 mm | 59% | 5.2 m/s | 8.1 |
| 1988 | 27.7°C | 22.3°C | 16.9°C | 39.2°C | 13.4°C | 26 mm | 57% | 4.6 m/s | 7.9 |
| 1987 | 25.5°C | 20.3°C | 15.1°C | 37.3°C | 11.8°C | 23 mm | 59% | 4.6 m/s | 7.8 |
| 1986 | 27.3°C | 21.5°C | 15.7°C | 37.3°C | 12.6°C | 3 mm | 54% | 4.7 m/s | 8.6 |
| 1985 | 27.2°C | 22.1°C | 17.0°C | 38.1°C | 13.0°C | 3 mm | 55% | 4.6 m/s | 7.7 |
| 1984 | 25.1°C | 20.5°C | 15.9°C | 35.8°C | 13.0°C | 6 mm | 61% | 4.6 m/s | 7.9 |
| 1983 | 26.4°C | 21.3°C | 16.2°C | 38.5°C | 12.8°C | 2 mm | 56% | 4.5 m/s | — |
| 1982 | 29.2°C | 23.7°C | 18.3°C | 41.2°C | 14.8°C | 7 mm | 53% | 4.5 m/s | — |
| 1981 | 29.2°C | 23.8°C | 18.3°C | 37.8°C | 15.3°C | 7 mm | 57% | 5.1 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 27.2°C with lows near 17.2°C (mean 22.2°C), based on 45 years of NASA POWER data.
January averages 12 mm of rainfall in Streaky Bay, one of the drier months. The wettest on record was 81 mm in 1995.
The hottest January reached 42.9°C in 2006. The coldest dipped to 11.8°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have fallen by about 0.2°C — but days and nights have moved in opposite directions. Overnight lows rose from 17.1°C to 17.3°C while daytime highs eased from 27.4°C to 26.9°C, narrowing the gap between day and night.
January is one of the warmer months of the year in Streaky Bay and one of the drier months, so plan for around 27.2°C daytime highs and 17.2°C at night.
Not quite — January is the 11th coolest month in Streaky Bay, averaging 22.2°C.
For January in Streaky Bay, pack light layers you can adjust through the day, with typical highs of 27.2°C and lows of 17.2°C.
Relative humidity in January averages 60% — moderately humid.
Average wind speed in January is 4.7 m/s. The windiest January on record averaged 5.2 m/s (1989).
The wettest January on record was 1995 with 81 mm. On average, January sees 12 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 January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.
