January is one of the cooler months of the year in Orange, with average highs near 15.1°C and lows around 7.1°C (mean 11.1°C). It is about average for rainfall, averaging 136 mm of rainfall and 84% relative humidity across the period.
January is one of the cooler months of the year in Orange. Across 45 years of records, the warmest January in Orange was 2017 — when the month averaged 14.4°C — while the coldest was 2018 at 7.9°C. Typical January days reach 15.1°C with nights near 7.1°C. The long-term trend is warming, about 0.2°C per decade.
January is about average for rainfall in Orange, averaging 136 mm of rainfall. The wettest January on record was 1991 with 325 mm, while the driest was 2009 at 22 mm.
Relative humidity in Orange during January averages 84%. The most humid January was 1998 at 88%, and the least humid was 2022 at 77%.
January receives about 2.8 kWh/m²/day of solar energy in Orange. The sunniest January was 2022 at 3.3 kWh/m²/day, and the cloudiest were 1989 and 1993 at 2.2.
Average wind speed in Orange during January is 2.5 m/s. The windiest Januarys were 1994, 1999 and 2000 at 2.8 m/s, while the calmest was 1981 at 2.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 10.1°C | 11.8°C | 11.5°C | 10.7°C | 11.6°C | +1.5°C |
| Avg High | 14.0°C | 15.5°C | 15.4°C | 14.8°C | 15.7°C | +1.7°C |
| Avg Low | 6.1°C | 8.0°C | 7.5°C | 6.6°C | 7.4°C | +1.3°C |
| Avg Rain | 102 mm | 183 mm | 106 mm | 140 mm | 153 mm | +51 mm |
January temperatures in Orange have risen by about 1.8°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -7.5°C (1982) to a record high of 25.3°C (2022).
Rainfall in January is about average for rainfall, averaging 136 mm, with a wettest year of 325 mm.
A quieter season to visit Orange
If your dates are flexible, the more temperate months of October and April tend to be the most comfortable for visiting Orange. That said, January — with days averaging 15.1°C and nights around 7.1°C (mean 11.1°C) and higher rainfall (136 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 | 12.8°C | 8.9°C | 4.9°C | 22.4°C | -4.2°C | 129 mm | 83% | 2.6 m/s | 2.8 |
| 2024 | 14.8°C | 10.3°C | 5.8°C | 21.6°C | -4.7°C | 274 mm | 83% | 2.6 m/s | 3 |
| 2023 | 17.9°C | 14.2°C | 10.5°C | 23.0°C | 3.6°C | 193 mm | 87% | 2.5 m/s | 2.6 |
| 2022 | 16.0°C | 10.8°C | 5.6°C | 25.3°C | -2.3°C | 61 mm | 77% | 2.7 m/s | 3.3 |
| 2021 | 15.5°C | 11.5°C | 7.6°C | 21.7°C | 0.6°C | 68 mm | 84% | 2.5 m/s | 2.9 |
| 2020 | 17.4°C | 13.7°C | 10.0°C | 23.0°C | 3.0°C | 193 mm | 86% | 2.4 m/s | 2.3 |
| 2019 | 15.2°C | 11.0°C | 6.8°C | 21.4°C | -0.1°C | 192 mm | 84% | 2.4 m/s | 3 |
| 2018 ❄️ | 12.3°C | 7.9°C | 3.6°C | 18.2°C | -6.0°C | 218 mm | 80% | 2.4 m/s | 3.2 |
| 2017 🔥 | 18.0°C | 14.4°C | 10.8°C | 22.5°C | -4.0°C | 114 mm | 87% | 2.5 m/s | 2.8 |
| 2016 | 15.0°C | 11.0°C | 6.9°C | 20.7°C | 1.3°C | 106 mm | 83% | 2.4 m/s | 3.1 |
| 2015 | 13.8°C | 9.7°C | 5.6°C | 22.2°C | -3.0°C | 176 mm | 84% | 2.4 m/s | 2.9 |
| 2014 | 13.2°C | 8.5°C | 3.8°C | 20.5°C | -3.8°C | 38 mm | 79% | 2.6 m/s | 3.2 |
| 2013 | 16.0°C | 12.4°C | 8.8°C | 22.2°C | 1.1°C | 211 mm | 87% | 2.5 m/s | 2.5 |
| 2012 | 17.9°C | 13.9°C | 9.9°C | 22.7°C | 0.3°C | 170 mm | 84% | 2.5 m/s | 2.9 |
| 2011 | 14.0°C | 9.6°C | 5.3°C | 19.9°C | -2.6°C | 87 mm | 81% | 2.4 m/s | 2.9 |
| 2010 | 12.8°C | 8.7°C | 4.7°C | 20.3°C | -3.7°C | 84 mm | 83% | 2.4 m/s | 3.1 |
| 2009 | 16.6°C | 11.9°C | 7.2°C | 22.9°C | -1.1°C | 22 mm | 80% | 2.4 m/s | 3.2 |
| 2008 | 14.1°C | 10.2°C | 6.4°C | 21.7°C | -1.0°C | 170 mm | 83% | 2.7 m/s | 2.7 |
| 2007 | 13.7°C | 10.4°C | 7.2°C | 20.9°C | 1.1°C | 202 mm | 87% | 2.5 m/s | 2.3 |
| 2006 | 18.4°C | 14.1°C | 9.8°C | 22.9°C | 4.2°C | 60 mm | 79% | 2.5 m/s | 3.2 |
| 2005 | 16.4°C | 12.8°C | 9.1°C | 21.8°C | 0.1°C | 97 mm | 87% | 2.5 m/s | 2.5 |
| 2004 | 15.1°C | 11.5°C | 7.9°C | 21.3°C | -0.1°C | 202 mm | 85% | 2.4 m/s | 2.7 |
| 2003 | 13.2°C | 9.2°C | 5.3°C | 19.6°C | -3.3°C | 45 mm | 83% | 2.4 m/s | 3.1 |
| 2002 | 16.1°C | 12.0°C | 7.8°C | 23.1°C | -2.6°C | 74 mm | 86% | 2.5 m/s | 2.9 |
| 2001 | 13.2°C | 9.4°C | 5.7°C | 19.4°C | -2.6°C | 150 mm | 85% | 2.3 m/s | 2.6 |
| 2000 | 17.5°C | 13.2°C | 9.0°C | 24.8°C | 0.9°C | 39 mm | 79% | 2.8 m/s | 2.9 |
| 1999 | 17.6°C | 13.7°C | 9.8°C | 22.4°C | -2.8°C | 108 mm | 85% | 2.8 m/s | 3 |
| 1998 | 17.4°C | 13.7°C | 10.1°C | 21.8°C | 3.8°C | 250 mm | 88% | 2.5 m/s | 2.7 |
| 1997 | 13.7°C | 10.3°C | 6.9°C | 23.0°C | -1.5°C | 124 mm | 86% | 2.7 m/s | 2.5 |
| 1996 | 15.1°C | 10.7°C | 6.2°C | 21.6°C | -4.0°C | 90 mm | 83% | 2.7 m/s | 2.7 |
| 1995 | 15.5°C | 11.6°C | 7.6°C | 20.6°C | -0.5°C | 143 mm | 84% | 2.7 m/s | 2.7 |
| 1994 | 14.1°C | 10.2°C | 6.3°C | 19.5°C | -2.3°C | 147 mm | 85% | 2.8 m/s | 2.8 |
| 1993 | 15.7°C | 12.0°C | 8.3°C | 22.4°C | 2.5°C | 202 mm | 86% | 2.3 m/s | 2.2 |
| 1992 | 14.4°C | 10.9°C | 7.5°C | 20.5°C | -0.9°C | 224 mm | 84% | 2.3 m/s | 2.7 |
| 1991 🌧️ | 14.9°C | 11.1°C | 7.2°C | 21.1°C | 1.7°C | 325 mm | 86% | 2.6 m/s | 2.3 |
| 1990 | 17.1°C | 13.4°C | 9.7°C | 22.2°C | 2.2°C | 217 mm | 84% | 2.5 m/s | 2.6 |
| 1989 | 17.6°C | 14.2°C | 10.8°C | 23.6°C | 1.7°C | 158 mm | 88% | 2.5 m/s | 2.2 |
| 1988 | 12.8°C | 8.8°C | 4.7°C | 21.3°C | -1.5°C | 76 mm | 82% | 2.7 m/s | 2.8 |
| 1987 | 13.7°C | 9.9°C | 6.1°C | 19.9°C | -0.5°C | 159 mm | 85% | 2.4 m/s | 2.7 |
| 1986 | 15.3°C | 11.3°C | 7.3°C | 21.1°C | 0.7°C | 41 mm | 82% | 2.4 m/s | 2.8 |
| 1985 | 12.4°C | 8.2°C | 3.9°C | 21.2°C | -5.9°C | 82 mm | 81% | 2.5 m/s | 2.9 |
| 1984 | 11.8°C | 8.0°C | 4.2°C | 17.9°C | -3.0°C | 131 mm | 85% | 2.5 m/s | 2.8 |
| 1983 | 13.8°C | 10.1°C | 6.3°C | 19.8°C | 1.6°C | 137 mm | 84% | 2.4 m/s | — |
| 1982 | 15.1°C | 10.9°C | 6.6°C | 22.5°C | -7.5°C | 59 mm | 82% | 2.7 m/s | — |
| 1981 | 13.7°C | 9.4°C | 5.1°C | 20.3°C | -1.5°C | 73 mm | 79% | 2.2 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 15.1°C with lows near 7.1°C (mean 11.1°C), based on 45 years of NASA POWER data.
January averages 136 mm of rainfall in Orange, about average for rainfall. The wettest on record was 325 mm in 1991.
The hottest January reached 25.3°C in 2022. The coldest dipped to -7.5°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 1.8°C. Daytime highs moved from 13.4°C to 15.4°C and overnight lows from 5.2°C to 6.9°C over the same span.
January is one of the cooler months of the year in Orange and about average for rainfall, so plan for around 15.1°C daytime highs and 7.1°C at night.
Yes — January is the coldest month of the year in Orange, averaging 11.1°C.
For January in Orange, pack warm layers and a jacket for chilly mornings, with typical highs of 15.1°C and lows of 7.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 84% — quite humid.
Average wind speed in January is 2.5 m/s. The windiest January on record averaged 2.8 m/s (1994).
The wettest January on record was 1991 with 325 mm. On average, January sees 136 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 Orange 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.
