January is one of the cooler months of the year in Brunswick, with average highs near 15.7°C and lows around 11.1°C (mean 13.4°C). It is one of the drier months, averaging 88 mm of rainfall and 79% relative humidity across the period.
January is one of the cooler months of the year in Brunswick. Across 45 years of records, the warmest January in Brunswick was 1993 — when the month averaged 17.1°C — while the coldest was 2025 at 9.9°C. Typical January days reach 15.7°C with nights near 11.1°C. The long-term trend is cooling, about 0.2°C per decade.
January is one of the drier months in Brunswick, averaging 88 mm of rainfall. The wettest January on record was 1991 with 312 mm, while the driest was 2012 at 15 mm.
Relative humidity in Brunswick during January averages 79%. The most humid January was 1998 at 85%, and the least humid was 1981 at 68%.
January receives about 2.9 kWh/m²/day of solar energy in Brunswick. The sunniest Januarys were 2003 and 2012 at 3.3 kWh/m²/day, and the cloudiest was 1993 at 2.
Average wind speed in Brunswick during January is 3.8 m/s. The windiest January was 1987 at 4.9 m/s, while the calmest was 2023 at 2.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.1°C | 14.6°C | 13.1°C | 12.9°C | 13.1°C | 0°C |
| Avg High | 15.5°C | 16.7°C | 15.4°C | 15.2°C | 15.5°C | 0°C |
| Avg Low | 10.8°C | 12.5°C | 10.8°C | 10.6°C | 10.7°C | -0.1°C |
| Avg Rain | 111 mm | 136 mm | 62 mm | 73 mm | 43 mm | -68 mm |
January temperatures in Brunswick have risen by about 0.4°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -4.7°C (1985) to a record high of 23.6°C (2023).
Rainfall in January is one of the drier months, averaging 88 mm, with a wettest year of 312 mm.
A quieter season to visit Brunswick
If your dates are flexible, the more temperate months of October and April tend to be the most comfortable for visiting Brunswick. That said, January — with days averaging 15.7°C and nights around 11.1°C (mean 13.4°C) and higher rainfall (88 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 ❄️ | 12.6°C | 9.9°C | 7.2°C | 18.8°C | 3.0°C | 59 mm | 74% | 3.6 m/s | 3.2 |
| 2024 | 15.2°C | 12.8°C | 10.5°C | 20.2°C | 2.8°C | 45 mm | 80% | 3.6 m/s | 3 |
| 2023 | 17.1°C | 14.6°C | 12.0°C | 23.6°C | 5.5°C | 64 mm | 80% | 2.8 m/s | 3.1 |
| 2022 | 15.7°C | 13.4°C | 11.0°C | 22.9°C | 4.4°C | 33 mm | 75% | 4 m/s | 3.2 |
| 2021 | 15.5°C | 13.2°C | 10.8°C | 20.0°C | 5.9°C | 29 mm | 80% | 3.3 m/s | 2.7 |
| 2020 | 16.8°C | 14.8°C | 12.7°C | 22.8°C | 4.2°C | 26 mm | 81% | 3.6 m/s | 2.9 |
| 2019 | 15.2°C | 13.0°C | 10.8°C | 21.5°C | 3.7°C | 79 mm | 79% | 3.5 m/s | 3 |
| 2018 | 12.3°C | 10.1°C | 7.9°C | 16.9°C | -0.2°C | 73 mm | 78% | 3.8 m/s | 3.1 |
| 2017 | 17.8°C | 15.6°C | 13.3°C | 22.5°C | 4.2°C | 91 mm | 83% | 3.3 m/s | 3.1 |
| 2016 | 14.9°C | 12.6°C | 10.4°C | 20.7°C | 3.4°C | 83 mm | 78% | 3.9 m/s | 2.9 |
| 2015 | 14.9°C | 12.6°C | 10.2°C | 20.6°C | 1.8°C | 70 mm | 82% | 3.7 m/s | 2.9 |
| 2014 | 13.2°C | 10.5°C | 7.9°C | 18.7°C | -1.4°C | 116 mm | 81% | 4 m/s | 2.7 |
| 2013 | 17.8°C | 15.8°C | 13.8°C | 21.6°C | 8.7°C | 17 mm | 83% | 3.3 m/s | 3 |
| 2012 | 17.1°C | 14.6°C | 12.0°C | 19.9°C | 3.8°C | 15 mm | 76% | 3.4 m/s | 3.3 |
| 2011 | 14.8°C | 12.5°C | 10.2°C | 20.3°C | 3.4°C | 86 mm | 75% | 3.9 m/s | 2.8 |
| 2010 | 14.0°C | 11.8°C | 9.5°C | 20.2°C | 2.5°C | 106 mm | 77% | 4.5 m/s | 3.1 |
| 2009 | 15.3°C | 12.9°C | 10.4°C | 20.1°C | 1.4°C | 49 mm | 76% | 3.7 m/s | 3 |
| 2008 | 15.2°C | 13.0°C | 10.8°C | 20.2°C | 3.7°C | 83 mm | 80% | 3.7 m/s | 2.9 |
| 2007 | 16.9°C | 14.9°C | 12.9°C | 22.5°C | 3.7°C | 63 mm | 78% | 3.6 m/s | 2.6 |
| 2006 | 15.9°C | 14.0°C | 12.2°C | 19.8°C | 5.1°C | 92 mm | 82% | 3.3 m/s | 3.2 |
| 2005 | 16.1°C | 14.0°C | 12.0°C | 21.7°C | 2.8°C | 38 mm | 83% | 3.7 m/s | 3 |
| 2004 | 15.1°C | 12.7°C | 10.3°C | 20.5°C | 3.8°C | 26 mm | 75% | 3.5 m/s | 3.1 |
| 2003 | 12.7°C | 10.1°C | 7.6°C | 18.5°C | -1.7°C | 16 mm | 75% | 4.1 m/s | 3.3 |
| 2002 | 16.1°C | 13.8°C | 11.5°C | 21.4°C | 3.4°C | 86 mm | 82% | 3.3 m/s | 2.9 |
| 2001 | 14.7°C | 12.3°C | 9.9°C | 22.0°C | 3.2°C | 69 mm | 77% | 4 m/s | 3 |
| 2000 | 15.9°C | 13.3°C | 10.7°C | 21.2°C | 2.2°C | 96 mm | 79% | 3.7 m/s | 2.8 |
| 1999 | 18.2°C | 16.1°C | 13.9°C | 22.4°C | 1.7°C | 135 mm | 77% | 3.7 m/s | 3 |
| 1998 | 15.9°C | 14.0°C | 12.0°C | 20.2°C | 5.3°C | 144 mm | 85% | 3.5 m/s | 2.9 |
| 1997 | 16.9°C | 14.7°C | 12.4°C | 21.4°C | 2.2°C | 56 mm | 79% | 4.1 m/s | 2.8 |
| 1996 | 17.4°C | 14.4°C | 11.4°C | 22.3°C | 0.9°C | 38 mm | 76% | 4.6 m/s | 3 |
| 1995 | 16.3°C | 14.2°C | 12.1°C | 21.7°C | 5.9°C | 62 mm | 77% | 4.3 m/s | 2.9 |
| 1994 | 16.0°C | 13.8°C | 11.6°C | 20.3°C | 2.7°C | 193 mm | 81% | 4.4 m/s | 2.8 |
| 1993 🔥 | 18.7°C | 17.1°C | 15.5°C | 22.2°C | 7.3°C | 160 mm | 83% | 4.1 m/s | 2 |
| 1992 | 14.6°C | 12.4°C | 10.2°C | 18.3°C | 4.0°C | 202 mm | 80% | 3.7 m/s | 2.7 |
| 1991 🌧️ | 16.0°C | 14.1°C | 12.3°C | 19.8°C | 4.9°C | 312 mm | 84% | 3.5 m/s | 2.2 |
| 1990 | 17.1°C | 15.2°C | 13.3°C | 20.3°C | 6.5°C | 56 mm | 82% | 3.2 m/s | 3.1 |
| 1989 | 17.4°C | 15.4°C | 13.3°C | 21.2°C | 8.9°C | 33 mm | 81% | 3.1 m/s | 3 |
| 1988 | 14.9°C | 13.0°C | 11.1°C | 20.6°C | 5.3°C | 126 mm | 80% | 4.4 m/s | 2.4 |
| 1987 | 16.5°C | 14.0°C | 11.5°C | 21.9°C | 4.7°C | 195 mm | 81% | 4.9 m/s | 2.6 |
| 1986 | 16.3°C | 13.8°C | 11.4°C | 19.9°C | -2.0°C | 87 mm | 77% | 4.6 m/s | 2.9 |
| 1985 | 15.1°C | 12.1°C | 9.1°C | 21.9°C | -4.7°C | 58 mm | 74% | 4.7 m/s | 3 |
| 1984 | 15.4°C | 13.4°C | 11.4°C | 20.7°C | 5.9°C | 148 mm | 81% | 4.3 m/s | 2.7 |
| 1983 | 15.6°C | 13.5°C | 11.4°C | 20.5°C | 5.1°C | 248 mm | 78% | 4.1 m/s | — |
| 1982 | 14.7°C | 12.2°C | 9.7°C | 20.2°C | -2.6°C | 89 mm | 79% | 3.6 m/s | — |
| 1981 | 13.4°C | 10.7°C | 8.0°C | 17.6°C | 1.2°C | 15 mm | 68% | 4.2 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 15.7°C with lows near 11.1°C (mean 13.4°C), based on 45 years of NASA POWER data.
January averages 88 mm of rainfall in Brunswick, one of the drier months. The wettest on record was 312 mm in 1991.
The hottest January reached 23.6°C in 2023. The coldest dipped to -4.7°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.4°C. Daytime highs moved from 14.8°C to 15.2°C and overnight lows from 9.9°C to 10.3°C over the same span.
January is one of the cooler months of the year in Brunswick and one of the drier months, so plan for around 15.7°C daytime highs and 11.1°C at night.
Yes — January is the coldest month of the year in Brunswick, averaging 13.4°C.
For January in Brunswick, pack light layers you can adjust through the day, with typical highs of 15.7°C and lows of 11.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 79% — quite humid.
Average wind speed in January is 3.8 m/s. The windiest January on record averaged 4.9 m/s (1987).
The wettest January on record was 1991 with 312 mm. On average, January sees 88 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 Brunswick 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.
