January is one of the cooler months of the year in Dacula, with average highs near 10.2°C and lows around -0.4°C (mean 4.9°C). It is a relatively wet time of year, averaging 119 mm of rainfall and 83% relative humidity across the period.
January is one of the cooler months of the year in Dacula. Across 45 years of records, the warmest January in Dacula was 2017 — when the month averaged 9.1°C — while the coldest were 1985 and 2014 at 1.5°C. Typical January days reach 10.2°C with nights near -0.4°C. The long-term trend is warming, about 0.5°C per decade.
January is a relatively wet time of year in Dacula, averaging 119 mm of rainfall. The wettest January on record was 2024 with 227 mm, while the driest was 1981 at 24 mm.
Relative humidity in Dacula during January averages 83%. The most humid January was 1998 at 90%, and the least humid was 1981 at 72%.
January receives about 2.7 kWh/m²/day of solar energy in Dacula. The sunniest Januarys were 2003 and 2018 at 3.1 kWh/m²/day, and the cloudiest was 1991 at 2.
Average wind speed in Dacula during January is 0.6 m/s. The windiest January was 1985 at 0.7 m/s, while the calmest were 2002, 2013 and 2021, among others at 0.5 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.2°C | 5.4°C | 5.4°C | 4.9°C | 5.8°C | +2.6°C |
| Avg High | 8.4°C | 10.5°C | 11.0°C | 10.2°C | 11.2°C | +2.8°C |
| Avg Low | -2.0°C | 0.3°C | -0.1°C | -0.5°C | 0.5°C | +2.5°C |
| Avg Rain | 100 mm | 153 mm | 92 mm | 112 mm | 146 mm | +46 mm |
January temperatures in Dacula have risen by about 2.9°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -19.4°C (1985) to a record high of 23.3°C (2002).
Rainfall in January is a relatively wet time of year, averaging 119 mm, with a wettest year of 227 mm.
A quieter season to visit Dacula
If your dates are flexible, the more temperate months of September and May tend to be the most comfortable for visiting Dacula. That said, January — with days averaging 10.2°C and nights around -0.4°C (mean 4.9°C) and higher rainfall (119 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 | 8.6°C | 2.8°C | -3.0°C | 18.4°C | -8.7°C | 70 mm | 77% | 0.6 m/s | 3 |
| 2024 🌧️ | 10.3°C | 5.0°C | -0.3°C | 21.2°C | -7.9°C | 227 mm | 81% | 0.6 m/s | 2.9 |
| 2023 | 13.9°C | 8.5°C | 3.2°C | 20.3°C | -5.2°C | 203 mm | 85% | 0.6 m/s | 2.5 |
| 2022 | 10.1°C | 4.7°C | -0.6°C | 23.2°C | -5.9°C | 90 mm | 80% | 0.6 m/s | 2.9 |
| 2021 | 11.2°C | 5.9°C | 0.5°C | 20.0°C | -4.4°C | 104 mm | 84% | 0.5 m/s | 2.6 |
| 2020 | 13.1°C | 8.2°C | 3.3°C | 21.4°C | -5.4°C | 179 mm | 85% | 0.6 m/s | 2.6 |
| 2019 | 11.3°C | 6.1°C | 0.9°C | 18.9°C | -5.5°C | 145 mm | 84% | 0.6 m/s | 2.7 |
| 2018 | 8.8°C | 3.0°C | -2.7°C | 18.4°C | -9.8°C | 85 mm | 75% | 0.6 m/s | 3.1 |
| 2017 🔥 | 14.2°C | 9.1°C | 3.9°C | 22.6°C | -12.1°C | 153 mm | 85% | 0.6 m/s | 2.8 |
| 2016 | 8.8°C | 4.0°C | -0.9°C | 16.7°C | -6.0°C | 102 mm | 84% | 0.6 m/s | 2.8 |
| 2015 | 9.9°C | 4.4°C | -1.1°C | 17.2°C | -9.3°C | 87 mm | 80% | 0.6 m/s | 2.8 |
| 2014 | 7.2°C | 1.5°C | -4.2°C | 17.4°C | -13.5°C | 80 mm | 77% | 0.6 m/s | 3 |
| 2013 | 13.4°C | 8.0°C | 2.6°C | 22.1°C | -4.4°C | 156 mm | 86% | 0.5 m/s | 2.5 |
| 2012 | 13.3°C | 7.5°C | 1.6°C | 20.0°C | -5.3°C | 109 mm | 83% | 0.6 m/s | 2.8 |
| 2011 | 8.1°C | 2.8°C | -2.4°C | 18.8°C | -8.8°C | 67 mm | 82% | 0.6 m/s | 2.8 |
| 2010 | 7.4°C | 2.3°C | -2.8°C | 17.6°C | -10.9°C | 140 mm | 83% | 0.6 m/s | 2.9 |
| 2009 | 10.6°C | 5.0°C | -0.6°C | 20.1°C | -8.3°C | 100 mm | 82% | 0.6 m/s | 2.6 |
| 2008 | 9.3°C | 4.2°C | -0.9°C | 19.4°C | -9.5°C | 80 mm | 79% | 0.6 m/s | 2.9 |
| 2007 | 11.8°C | 6.4°C | 1.0°C | 20.3°C | -7.4°C | 97 mm | 81% | 0.6 m/s | 2.7 |
| 2006 | 13.9°C | 8.3°C | 2.6°C | 19.5°C | -4.8°C | 124 mm | 84% | 0.6 m/s | 2.8 |
| 2005 | 12.5°C | 7.1°C | 1.8°C | 20.4°C | -6.5°C | 47 mm | 83% | 0.6 m/s | 2.8 |
| 2004 | 10.3°C | 4.4°C | -1.5°C | 20.8°C | -7.3°C | 75 mm | 80% | 0.6 m/s | 2.8 |
| 2003 | 8.6°C | 3.4°C | -1.9°C | 16.3°C | -10.0°C | 52 mm | 79% | 0.6 m/s | 3.1 |
| 2002 | 13.1°C | 6.8°C | 0.6°C | 23.3°C | -7.2°C | 130 mm | 81% | 0.5 m/s | 2.8 |
| 2001 | 10.1°C | 4.3°C | -1.5°C | 19.0°C | -10.3°C | 85 mm | 81% | 0.5 m/s | 2.9 |
| 2000 | 9.6°C | 4.4°C | -0.8°C | 20.4°C | -8.6°C | 134 mm | 81% | 0.6 m/s | 2.5 |
| 1999 | 13.0°C | 7.1°C | 1.3°C | 21.2°C | -7.9°C | 156 mm | 83% | 0.6 m/s | 2.7 |
| 1998 | 11.2°C | 6.6°C | 2.0°C | 19.6°C | -6.2°C | 172 mm | 90% | 0.5 m/s | 2.7 |
| 1997 | 10.6°C | 5.4°C | 0.2°C | 20.4°C | -9.1°C | 145 mm | 82% | 0.6 m/s | 2.6 |
| 1996 | 9.3°C | 3.8°C | -1.7°C | 19.2°C | -7.6°C | 205 mm | 87% | 0.6 m/s | 2.6 |
| 1995 | 10.8°C | 5.4°C | 0.0°C | 18.4°C | -7.3°C | 106 mm | 84% | 0.6 m/s | 2.7 |
| 1994 | 7.1°C | 2.0°C | -3.0°C | 16.6°C | -14.8°C | 124 mm | 83% | 0.6 m/s | 2.5 |
| 1993 | 10.8°C | 6.3°C | 1.8°C | 17.2°C | -3.4°C | 154 mm | 88% | 0.5 m/s | 2.1 |
| 1992 | 10.5°C | 5.2°C | 0.0°C | 17.3°C | -7.7°C | 142 mm | 85% | 0.6 m/s | 2.7 |
| 1991 | 9.7°C | 5.3°C | 1.0°C | 17.0°C | -5.9°C | 150 mm | 88% | 0.5 m/s | 2 |
| 1990 | 11.9°C | 6.7°C | 1.5°C | 19.0°C | -5.3°C | 172 mm | 87% | 0.5 m/s | 2.7 |
| 1989 | 12.7°C | 7.1°C | 1.4°C | 19.6°C | -4.7°C | 75 mm | 81% | 0.6 m/s | 2.6 |
| 1988 | 6.7°C | 2.0°C | -2.7°C | 16.9°C | -9.6°C | 138 mm | 84% | 0.6 m/s | 2.4 |
| 1987 | 8.4°C | 3.7°C | -1.0°C | 17.7°C | -7.1°C | 152 mm | 87% | 0.6 m/s | 2.6 |
| 1986 | 9.2°C | 3.3°C | -2.7°C | 17.7°C | -14.0°C | 29 mm | 79% | 0.6 m/s | 2.9 |
| 1985 ❄️ | 6.6°C | 1.5°C | -3.5°C | 18.3°C | -19.4°C | 121 mm | 79% | 0.7 m/s | 2.7 |
| 1984 | 8.2°C | 3.1°C | -2.0°C | 14.3°C | -8.0°C | 114 mm | 85% | 0.5 m/s | 2.7 |
| 1983 | 7.8°C | 3.3°C | -1.2°C | 16.2°C | -6.1°C | 90 mm | 86% | 0.6 m/s | — |
| 1982 | 7.8°C | 2.2°C | -3.3°C | 18.2°C | -17.7°C | 153 mm | 83% | 0.6 m/s | — |
| 1981 | 8.3°C | 2.5°C | -3.3°C | 17.0°C | -10.8°C | 24 mm | 72% | 0.6 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 10.2°C with lows near -0.4°C (mean 4.9°C), based on 45 years of NASA POWER data.
January averages 119 mm of rainfall in Dacula, a relatively wet time of year. The wettest on record was 227 mm in 2024.
The hottest January reached 23.3°C in 2002. The coldest dipped to -19.4°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 2.9°C. Daytime highs moved from 7.7°C to 10.8°C and overnight lows from -2.7°C to 0°C over the same span.
January is one of the cooler months of the year in Dacula and a relatively wet time of year, so plan for around 10.2°C daytime highs and -0.4°C at night.
Yes — January is the coldest month of the year in Dacula, averaging 4.9°C.
For January in Dacula, pack warm layers and a jacket for chilly mornings, with typical highs of 10.2°C and lows of -0.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 83% — quite humid.
Average wind speed in January is 0.6 m/s. The windiest January on record averaged 0.7 m/s (1985).
The wettest January on record was 2024 with 227 mm. On average, January sees 119 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 Dacula 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.
