January is one of the cooler months of the year in Rome, with average highs near 9.5°C and lows around -1°C (mean 4.3°C). It is a relatively wet time of year, averaging 122 mm of rainfall and 83% relative humidity across the period.
January is one of the cooler months of the year in Rome. Across 45 years of records, the warmest January in Rome was 2017 — when the month averaged 9.2°C — while the coldest were 1985 and 2014 at 0.3°C. Typical January days reach 9.5°C with nights near -1°C. The long-term trend is warming, about 0.5°C per decade.
January is a relatively wet time of year in Rome, averaging 122 mm of rainfall. The wettest January on record was 2013 with 231 mm, while the driest was 1986 at 30 mm.
Relative humidity in Rome during January averages 83%. The most humid January was 1998 at 90%, and the least humid was 1981 at 76%.
January receives about 2.5 kWh/m²/day of solar energy in Rome. The sunniest January was 2014 at 3 kWh/m²/day, and the cloudiest was 1991 at 2.
Average wind speed in Rome during January is 0.1 m/s. The windiest Januarys were 2023, 2024 and 2025, among others at 0.2 m/s, while the calmest were 2016, 2017 and 2021, among others at 0.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 2.5°C | 4.9°C | 4.8°C | 4.2°C | 5.2°C | +2.7°C |
| Avg High | 7.7°C | 9.8°C | 10.2°C | 9.5°C | 10.5°C | +2.8°C |
| Avg Low | -2.7°C | -0.1°C | -0.7°C | -1.1°C | -0.3°C | +2.4°C |
| Avg Rain | 111 mm | 156 mm | 100 mm | 116 mm | 130 mm | +18 mm |
January temperatures in Rome have risen by about 2.9°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -19.6°C (1985) to a record high of 24.2°C (2022).
Rainfall in January is a relatively wet time of year, averaging 122 mm, with a wettest year of 231 mm.
A quieter season to visit Rome
If your dates are flexible, the more temperate months of September and May tend to be the most comfortable for visiting Rome. That said, January — with days averaging 9.5°C and nights around -1°C (mean 4.3°C) and higher rainfall (122 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 | 7.9°C | 2.2°C | -3.6°C | 16.2°C | -13.2°C | 68 mm | 78% | 0.2 m/s | 2.7 |
| 2024 | 9.2°C | 3.8°C | -1.6°C | 21.1°C | -12.9°C | 181 mm | 81% | 0.2 m/s | 2.4 |
| 2023 | 13.6°C | 8.3°C | 3.0°C | 21.3°C | -5.2°C | 181 mm | 85% | 0.2 m/s | 2.3 |
| 2022 | 9.2°C | 3.5°C | -2.1°C | 24.2°C | -6.5°C | 102 mm | 82% | 0.2 m/s | 2.7 |
| 2021 | 10.8°C | 5.4°C | 0.0°C | 21.1°C | -5.4°C | 95 mm | 84% | 0.1 m/s | 2.4 |
| 2020 | 12.6°C | 7.7°C | 2.7°C | 20.8°C | -5.5°C | 149 mm | 85% | 0.2 m/s | 2.3 |
| 2019 | 10.2°C | 5.2°C | 0.2°C | 18.3°C | -6.2°C | 144 mm | 84% | 0.2 m/s | 2.5 |
| 2018 | 7.8°C | 2.1°C | -3.6°C | 17.6°C | -13.0°C | 42 mm | 76% | 0.2 m/s | 2.9 |
| 2017 🔥 | 14.0°C | 9.2°C | 4.3°C | 22.9°C | -9.1°C | 133 mm | 84% | 0.1 m/s | 2.4 |
| 2016 | 8.3°C | 3.3°C | -1.6°C | 17.3°C | -7.0°C | 87 mm | 84% | 0.1 m/s | 2.6 |
| 2015 | 9.1°C | 3.6°C | -1.9°C | 16.8°C | -10.3°C | 104 mm | 82% | 0.1 m/s | 2.6 |
| 2014 | 6.1°C | 0.3°C | -5.6°C | 15.6°C | -14.7°C | 64 mm | 77% | 0.1 m/s | 3 |
| 2013 🌧️ | 12.2°C | 7.0°C | 1.9°C | 21.6°C | -5.4°C | 231 mm | 87% | 0.1 m/s | 2.2 |
| 2012 | 12.9°C | 7.2°C | 1.6°C | 19.9°C | -5.9°C | 143 mm | 84% | 0.2 m/s | 2.5 |
| 2011 | 7.6°C | 2.4°C | -2.8°C | 18.5°C | -10.4°C | 83 mm | 83% | 0.2 m/s | 2.4 |
| 2010 | 6.4°C | 1.6°C | -3.1°C | 17.2°C | -10.6°C | 126 mm | 83% | 0.2 m/s | 2.6 |
| 2009 | 9.8°C | 4.0°C | -1.7°C | 20.4°C | -10.7°C | 144 mm | 84% | 0.1 m/s | 2.5 |
| 2008 | 9.1°C | 3.8°C | -1.5°C | 20.3°C | -9.8°C | 75 mm | 78% | 0.1 m/s | 2.7 |
| 2007 | 11.1°C | 5.7°C | 0.2°C | 20.5°C | -7.6°C | 73 mm | 82% | 0.1 m/s | 2.5 |
| 2006 | 13.4°C | 7.8°C | 2.1°C | 20.7°C | -4.6°C | 126 mm | 84% | 0.1 m/s | 2.5 |
| 2005 | 12.0°C | 6.9°C | 1.7°C | 20.0°C | -6.6°C | 55 mm | 84% | 0.1 m/s | 2.6 |
| 2004 | 9.7°C | 4.1°C | -1.6°C | 20.7°C | -7.8°C | 88 mm | 81% | 0.1 m/s | 2.5 |
| 2003 | 7.2°C | 2.1°C | -3.1°C | 15.8°C | -13.6°C | 52 mm | 80% | 0.1 m/s | 2.7 |
| 2002 | 11.8°C | 6.0°C | 0.1°C | 23.1°C | -6.7°C | 151 mm | 84% | 0.1 m/s | 2.5 |
| 2001 | 8.5°C | 3.1°C | -2.3°C | 16.7°C | -9.8°C | 121 mm | 84% | 0.1 m/s | 2.6 |
| 2000 | 9.7°C | 4.5°C | -0.8°C | 21.4°C | -8.4°C | 114 mm | 78% | 0.1 m/s | 2.5 |
| 1999 | 11.9°C | 6.5°C | 1.1°C | 21.4°C | -11.1°C | 189 mm | 85% | 0.1 m/s | 2.3 |
| 1998 | 11.2°C | 6.6°C | 2.0°C | 19.8°C | -6.4°C | 153 mm | 90% | 0.1 m/s | 2.2 |
| 1997 | 9.6°C | 4.4°C | -0.9°C | 20.9°C | -12.2°C | 149 mm | 83% | 0.1 m/s | 2.5 |
| 1996 | 8.4°C | 3.1°C | -2.3°C | 19.3°C | -9.9°C | 228 mm | 88% | 0.2 m/s | 2.2 |
| 1995 | 9.9°C | 4.9°C | -0.1°C | 18.1°C | -7.7°C | 123 mm | 84% | 0.1 m/s | 2.4 |
| 1994 | 6.1°C | 1.1°C | -3.9°C | 14.8°C | -17.5°C | 145 mm | 84% | 0.2 m/s | 2.3 |
| 1993 | 10.6°C | 5.8°C | 1.1°C | 16.0°C | -4.6°C | 152 mm | 87% | 0.1 m/s | 2.1 |
| 1992 | 9.7°C | 4.8°C | -0.2°C | 17.0°C | -8.8°C | 139 mm | 86% | 0.1 m/s | 2.4 |
| 1991 | 9.4°C | 5.1°C | 0.7°C | 15.6°C | -5.7°C | 94 mm | 88% | 0.2 m/s | 2 |
| 1990 | 11.5°C | 6.3°C | 1.1°C | 19.2°C | -5.4°C | 192 mm | 89% | 0.1 m/s | 2.5 |
| 1989 | 12.4°C | 6.8°C | 1.1°C | 19.4°C | -4.8°C | 134 mm | 82% | 0.2 m/s | 2.6 |
| 1988 | 6.2°C | 1.3°C | -3.6°C | 17.4°C | -12.8°C | 145 mm | 84% | 0.1 m/s | 2.5 |
| 1987 | 8.1°C | 3.2°C | -1.6°C | 15.0°C | -9.4°C | 154 mm | 88% | 0.2 m/s | 2.4 |
| 1986 | 8.9°C | 3.0°C | -3.0°C | 18.1°C | -14.5°C | 30 mm | 79% | 0.2 m/s | 2.8 |
| 1985 ❄️ | 5.2°C | 0.3°C | -4.6°C | 19.2°C | -19.6°C | 123 mm | 81% | 0.1 m/s | 2.3 |
| 1984 | 6.9°C | 1.9°C | -3.1°C | 14.4°C | -11.3°C | 105 mm | 86% | 0.2 m/s | 2.5 |
| 1983 | 7.7°C | 3.0°C | -1.6°C | 14.7°C | -5.9°C | 74 mm | 87% | 0.2 m/s | — |
| 1982 | 7.2°C | 1.5°C | -4.2°C | 19.5°C | -18.3°C | 203 mm | 84% | 0.1 m/s | — |
| 1981 | 7.1°C | 1.6°C | -4.0°C | 15.5°C | -12.8°C | 33 mm | 76% | 0.2 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 9.5°C with lows near -1°C (mean 4.3°C), based on 45 years of NASA POWER data.
January averages 122 mm of rainfall in Rome, a relatively wet time of year. The wettest on record was 231 mm in 2013.
The hottest January reached 24.2°C in 2022. The coldest dipped to -19.6°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 6.8°C to 10.1°C and overnight lows from -3.5°C to -0.9°C over the same span.
January is one of the cooler months of the year in Rome and a relatively wet time of year, so plan for around 9.5°C daytime highs and -1°C at night.
Yes — January is the coldest month of the year in Rome, averaging 4.3°C.
For January in Rome, pack warm layers and a jacket for chilly mornings, with typical highs of 9.5°C and lows of -1°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 83% — quite humid.
Average wind speed in January is 0.1 m/s. The windiest January on record averaged 0.2 m/s (1981).
The wettest January on record was 2013 with 231 mm. On average, January sees 122 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 Rome 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.
