January is one of the cooler months of the year in Dieppe, with average highs near -4.2°C and lows around -13.8°C (mean -9°C). It is about average for rainfall, averaging 85 mm of rainfall and 93% relative humidity across the period.
January is one of the cooler months of the year in Dieppe. Across 45 years of records, the warmest January in Dieppe was 2006 — when the month averaged -3.9°C — while the coldest was 1982 at -14.4°C. Typical January days reach -4.2°C with nights near -13.8°C. The long-term trend is warming, about 1°C per decade.
January is about average for rainfall in Dieppe, averaging 85 mm of rainfall. The wettest January on record was 1998 with 146 mm, while the driest was 2013 at 28 mm.
Relative humidity in Dieppe during January averages 93%. The most humid January was 1981 at 100%, and the least humid was 1999 at 85%.
January receives about 1.4 kWh/m²/day of solar energy in Dieppe. The sunniest Januarys were 2001, 2004 and 2013 at 1.6 kWh/m²/day, and the cloudiest were 2000, 2002 and 2023, among others at 1.2.
Average wind speed in Dieppe during January is 0.2 m/s. The windiest Januarys were 2022, 2024 and 2025, among others at 0.3 m/s, while the calmest were 2017, 2019 and 2023, among others at 0.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -10.8°C | -9.4°C | -9.5°C | -8.0°C | -6.7°C | +4.1°C |
| Avg High | -5.7°C | -4.2°C | -4.9°C | -3.3°C | -2.4°C | +3.3°C |
| Avg Low | -16.0°C | -14.5°C | -14.1°C | -12.7°C | -11.0°C | +5°C |
| Avg Rain | 92 mm | 90 mm | 82 mm | 83 mm | 74 mm | -18 mm |
January temperatures in Dieppe have risen by about 5.4°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -38.1°C (1981) to a record high of 16.5°C (2018).
Rainfall in January is about average for rainfall, averaging 85 mm, with a wettest year of 146 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.8°C per decade while lows rose 1.2°C per decade, narrowing the gap between day and night.
A quieter season to visit Dieppe
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Dieppe. That said, January — with days averaging -4.2°C and nights around -13.8°C (mean -9°C) and higher rainfall (85 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 | -3.5°C | -7.5°C | -11.5°C | 3.6°C | -21.7°C | 49 mm | 89% | 0.3 m/s | 1.4 |
| 2024 | -2.0°C | -6.5°C | -10.9°C | 4.4°C | -16.3°C | 53 mm | 88% | 0.3 m/s | 1.5 |
| 2023 | -0.5°C | -4.7°C | -8.8°C | 7.6°C | -19.7°C | 138 mm | 94% | 0.2 m/s | 1.2 |
| 2022 | -3.7°C | -9.2°C | -14.7°C | 6.9°C | -22.3°C | 94 mm | 89% | 0.3 m/s | 1.4 |
| 2021 | -1.6°C | -4.9°C | -8.2°C | 1.5°C | -17.0°C | 41 mm | 91% | 0.3 m/s | 1.3 |
| 2020 | -3.0°C | -7.5°C | -12.0°C | 8.3°C | -29.2°C | 68 mm | 95% | 0.3 m/s | 1.3 |
| 2019 | -3.0°C | -8.5°C | -14.0°C | 10.4°C | -25.0°C | 114 mm | 94% | 0.2 m/s | 1.3 |
| 2018 | -2.7°C | -7.6°C | -12.6°C | 16.5°C | -22.5°C | 101 mm | 86% | 0.3 m/s | 1.4 |
| 2017 | -2.2°C | -6.3°C | -10.5°C | 7.6°C | -25.0°C | 83 mm | 90% | 0.2 m/s | 1.4 |
| 2016 | -3.0°C | -7.1°C | -11.1°C | 6.6°C | -21.3°C | 59 mm | 94% | 0.3 m/s | 1.5 |
| 2015 | -5.0°C | -10.3°C | -15.6°C | 7.4°C | -24.0°C | 115 mm | 90% | 0.3 m/s | 1.4 |
| 2014 | -3.4°C | -8.1°C | -12.9°C | 10.4°C | -30.0°C | 89 mm | 90% | 0.2 m/s | 1.3 |
| 2013 | -4.4°C | -9.6°C | -14.7°C | 14.3°C | -24.8°C | 28 mm | 89% | 0.2 m/s | 1.6 |
| 2012 | -2.4°C | -7.2°C | -12.0°C | 7.0°C | -19.7°C | 65 mm | 89% | 0.2 m/s | 1.4 |
| 2011 | -4.7°C | -9.0°C | -13.2°C | 1.4°C | -24.4°C | 93 mm | 99% | 0.3 m/s | 1.4 |
| 2010 | -2.7°C | -6.7°C | -10.6°C | 6.5°C | -20.7°C | 82 mm | 95% | 0.3 m/s | 1.4 |
| 2009 | -6.9°C | -12.2°C | -17.4°C | 0.2°C | -31.0°C | 80 mm | 94% | 0.3 m/s | 1.5 |
| 2008 | -3.0°C | -7.3°C | -11.5°C | 9.1°C | -27.9°C | 112 mm | 95% | 0.3 m/s | 1.3 |
| 2007 | -4.2°C | -8.6°C | -13.0°C | 10.3°C | -28.6°C | 100 mm | 94% | 0.3 m/s | 1.5 |
| 2006 🔥 | 0.1°C | -3.9°C | -7.8°C | 11.9°C | -15.4°C | 73 mm | 91% | 0.2 m/s | 1.3 |
| 2005 | -6.2°C | -10.6°C | -14.9°C | 11.7°C | -25.6°C | 63 mm | 90% | 0.2 m/s | 1.5 |
| 2004 | -8.5°C | -12.7°C | -16.9°C | 3.4°C | -28.7°C | 38 mm | 88% | 0.2 m/s | 1.6 |
| 2003 | -8.0°C | -12.5°C | -16.9°C | 0.5°C | -29.4°C | 55 mm | 99% | 0.2 m/s | 1.5 |
| 2002 | -3.4°C | -8.0°C | -12.6°C | 0.9°C | -20.7°C | 86 mm | 97% | 0.2 m/s | 1.2 |
| 2001 | -5.5°C | -11.0°C | -16.5°C | -0.6°C | -25.5°C | 73 mm | 100% | 0.2 m/s | 1.6 |
| 2000 | -3.5°C | -8.3°C | -13.1°C | 11.5°C | -22.8°C | 140 mm | 91% | 0.3 m/s | 1.2 |
| 1999 | -2.1°C | -7.3°C | -12.5°C | 12.0°C | -26.5°C | 96 mm | 85% | 0.2 m/s | 1.3 |
| 1998 🌧️ | -4.1°C | -8.4°C | -12.7°C | 3.2°C | -27.0°C | 146 mm | 97% | 0.2 m/s | 1.4 |
| 1997 | -3.9°C | -9.6°C | -15.2°C | 7.9°C | -24.1°C | 81 mm | 87% | 0.2 m/s | 1.3 |
| 1996 | -3.6°C | -9.6°C | -15.5°C | 12.0°C | -30.0°C | 67 mm | 89% | 0.3 m/s | 1.2 |
| 1995 | -3.4°C | -7.4°C | -11.4°C | 10.4°C | -26.6°C | 111 mm | 97% | 0.2 m/s | 1.4 |
| 1994 | -6.8°C | -12.9°C | -19.0°C | 7.6°C | -28.6°C | 89 mm | 88% | 0.2 m/s | 1.2 |
| 1993 | -4.9°C | -9.9°C | -14.8°C | 9.4°C | -29.7°C | 59 mm | 86% | 0.2 m/s | 1.3 |
| 1992 | -5.2°C | -10.0°C | -14.9°C | 8.5°C | -24.0°C | 66 mm | 86% | 0.2 m/s | 1.4 |
| 1991 | -6.3°C | -12.1°C | -17.9°C | 0.7°C | -30.9°C | 75 mm | 95% | 0.2 m/s | 1.4 |
| 1990 | -1.8°C | -6.5°C | -11.3°C | 12.8°C | -24.9°C | 114 mm | 94% | 0.2 m/s | 1.2 |
| 1989 | -3.1°C | -9.0°C | -14.9°C | 4.2°C | -24.4°C | 57 mm | 92% | 0.3 m/s | 1.4 |
| 1988 | -4.5°C | -9.4°C | -14.3°C | 0.8°C | -29.1°C | 62 mm | 98% | 0.2 m/s | 1.2 |
| 1987 | -5.9°C | -10.5°C | -15.2°C | 0.8°C | -27.1°C | 112 mm | 98% | 0.3 m/s | 1.3 |
| 1986 | -3.1°C | -8.6°C | -14.1°C | 12.2°C | -30.1°C | 109 mm | 91% | 0.2 m/s | 1.2 |
| 1985 | -8.5°C | -13.1°C | -17.6°C | -1.9°C | -23.9°C | 44 mm | 96% | 0.3 m/s | 1.5 |
| 1984 | -5.9°C | -10.5°C | -15.2°C | 1.5°C | -32.3°C | 125 mm | 98% | 0.2 m/s | 1.2 |
| 1983 | -3.0°C | -7.7°C | -12.4°C | 10.1°C | -25.9°C | 72 mm | 91% | 0.3 m/s | — |
| 1982 ❄️ | -8.6°C | -14.4°C | -20.3°C | 0.6°C | -33.0°C | 131 mm | 99% | 0.3 m/s | — |
| 1981 | -8.7°C | -14.3°C | -19.9°C | 0.2°C | -38.1°C | 119 mm | 100% | 0.2 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around -4.2°C with lows near -13.8°C (mean -9°C), based on 45 years of NASA POWER data.
January averages 85 mm of rainfall in Dieppe, about average for rainfall. The wettest on record was 146 mm in 1998.
The hottest January reached 16.5°C in 2018. The coldest dipped to -38.1°C in 1981.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 5.4°C. Daytime highs moved from -6.9°C to -2.3°C and overnight lows from -17.1°C to -10.8°C over the same span.
January is one of the cooler months of the year in Dieppe and about average for rainfall, so plan for around -4.2°C daytime highs and -13.8°C at night.
Yes — January is the coldest month of the year in Dieppe, averaging -9°C.
For January in Dieppe, pack warm layers and a jacket for chilly mornings, with typical highs of -4.2°C and lows of -13.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 93% — quite humid.
Average wind speed in January is 0.2 m/s. The windiest January on record averaged 0.3 m/s (1982).
The wettest January on record was 1998 with 146 mm. On average, January sees 85 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 Dieppe 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.
