January is one of the cooler months of the year in Surrey, with average highs near 5.9°C and lows around 2.6°C (mean 4.3°C). It is a relatively wet time of year, averaging 185 mm of rainfall and 88% relative humidity across the period.
January is one of the cooler months of the year in Surrey. Across 45 years of records, the warmest Januarys in Surrey were 1994, 2003 and 2010 — when the month averaged 6.4°C — while the coldest was 1993 at 0.6°C. Typical January days reach 5.9°C with nights near 2.6°C. The long-term trend is warming, about 0.2°C per decade.
January is a relatively wet time of year in Surrey, averaging 185 mm of rainfall. The wettest January on record was 2020 with 327 mm, while the driest was 1985 at 26 mm.
Relative humidity in Surrey during January averages 88%. The most humid January was 2006 at 93%, and the least humid was 2017 at 81%.
January receives about 0.9 kWh/m²/day of solar energy in Surrey. The sunniest January was 2025 at 1.2 kWh/m²/day, and the cloudiest were 2006 and 2020 at 0.6.
Average wind speed in Surrey during January is 2.3 m/s. The windiest January was 2020 at 2.8 m/s, while the calmest was 2015 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 4.0°C | 3.8°C | 4.2°C | 4.6°C | 4.7°C | +0.7°C |
| Avg High | 5.7°C | 5.6°C | 5.9°C | 6.2°C | 6.2°C | +0.5°C |
| Avg Low | 2.3°C | 2.1°C | 2.6°C | 3.0°C | 3.1°C | +0.8°C |
| Avg Rain | 163 mm | 197 mm | 195 mm | 175 mm | 193 mm | +30 mm |
January temperatures in Surrey have risen by about 0.5°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -11.5°C (1996) to a record high of 13°C (2024).
Rainfall in January is a relatively wet time of year, averaging 185 mm, with a wettest year of 327 mm.
A quieter season to visit Surrey
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Surrey. That said, January — with days averaging 5.9°C and nights around 2.6°C (mean 4.3°C) and higher rainfall (185 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 | 5.1°C | 3.5°C | 2.0°C | 8.5°C | -0.8°C | 59 mm | 85% | 1.9 m/s | 1.2 |
| 2024 | 5.8°C | 4.3°C | 2.7°C | 13.0°C | -10.9°C | 245 mm | 88% | 2.5 m/s | 0.8 |
| 2023 | 6.7°C | 5.2°C | 3.7°C | 10.3°C | -2.3°C | 125 mm | 88% | 2.2 m/s | 0.9 |
| 2022 | 6.1°C | 4.4°C | 2.8°C | 9.3°C | -5.2°C | 187 mm | 90% | 2 m/s | 0.9 |
| 2021 | 6.8°C | 5.3°C | 3.8°C | 9.9°C | -1.1°C | 214 mm | 89% | 2.5 m/s | 0.9 |
| 2020 🌧️ | 6.7°C | 5.2°C | 3.8°C | 11.2°C | -5.6°C | 327 mm | 90% | 2.8 m/s | 0.6 |
| 2019 | 7.3°C | 5.5°C | 3.7°C | 9.7°C | 0.4°C | 167 mm | 86% | 2.2 m/s | 1 |
| 2018 | 6.7°C | 5.5°C | 4.3°C | 10.9°C | -2.0°C | 266 mm | 92% | 2.6 m/s | 0.7 |
| 2017 | 4.0°C | 2.3°C | 0.6°C | 9.0°C | -5.5°C | 114 mm | 81% | 2.6 m/s | 1.1 |
| 2016 | 6.7°C | 5.0°C | 3.3°C | 11.6°C | -2.5°C | 188 mm | 88% | 2.3 m/s | 0.9 |
| 2015 | 7.8°C | 6.1°C | 4.4°C | 12.1°C | 0.8°C | 172 mm | 88% | 1.7 m/s | 1 |
| 2014 | 6.6°C | 4.9°C | 3.1°C | 10.2°C | -0.5°C | 123 mm | 88% | 2 m/s | 1.1 |
| 2013 | 4.4°C | 3.1°C | 1.7°C | 7.5°C | -1.7°C | 120 mm | 87% | 1.9 m/s | 0.9 |
| 2012 | 5.2°C | 3.6°C | 2.0°C | 9.4°C | -6.1°C | 184 mm | 86% | 2.6 m/s | 0.7 |
| 2011 | 5.6°C | 4.0°C | 2.3°C | 10.6°C | -2.9°C | 218 mm | 87% | 2.1 m/s | 0.8 |
| 2010 | 7.8°C | 6.4°C | 5.0°C | 10.1°C | 0.0°C | 201 mm | 88% | 2.2 m/s | 0.7 |
| 2009 | 4.8°C | 3.0°C | 1.2°C | 8.1°C | -5.9°C | 147 mm | 87% | 2.1 m/s | 1 |
| 2008 | 4.5°C | 2.9°C | 1.2°C | 8.2°C | -4.0°C | 165 mm | 86% | 2.6 m/s | 0.8 |
| 2007 | 5.3°C | 3.5°C | 1.7°C | 10.6°C | -5.1°C | 235 mm | 87% | 2.4 m/s | 1 |
| 2006 | 7.7°C | 6.3°C | 5.0°C | 10.6°C | 2.9°C | 309 mm | 93% | 2.6 m/s | 0.6 |
| 2005 | 5.9°C | 4.1°C | 2.4°C | 12.3°C | -6.6°C | 225 mm | 87% | 2.3 m/s | 0.8 |
| 2004 | 5.3°C | 3.8°C | 2.3°C | 10.0°C | -10.7°C | 183 mm | 91% | 2.3 m/s | 0.8 |
| 2003 | 8.2°C | 6.4°C | 4.6°C | 11.3°C | -0.7°C | 199 mm | 90% | 2.2 m/s | 0.9 |
| 2002 | 5.6°C | 4.2°C | 2.8°C | 11.0°C | -4.6°C | 194 mm | 89% | 2.1 m/s | 0.8 |
| 2001 | 6.5°C | 4.7°C | 2.9°C | 9.4°C | -0.5°C | 146 mm | 88% | 2.2 m/s | 1 |
| 2000 | 5.2°C | 3.4°C | 1.7°C | 7.6°C | -1.9°C | 150 mm | 89% | 2.6 m/s | 0.9 |
| 1999 | 6.3°C | 4.9°C | 3.5°C | 9.8°C | -2.3°C | 257 mm | 90% | 2.3 m/s | 0.7 |
| 1998 | 5.6°C | 3.9°C | 2.3°C | 9.7°C | -8.5°C | 214 mm | 89% | 2.7 m/s | 1 |
| 1997 | 5.2°C | 3.4°C | 1.6°C | 9.1°C | -9.7°C | 254 mm | 88% | 2.2 m/s | 0.9 |
| 1996 | 4.0°C | 2.3°C | 0.6°C | 10.1°C | -11.5°C | 182 mm | 87% | 2.7 m/s | 0.9 |
| 1995 | 6.3°C | 4.2°C | 2.2°C | 11.5°C | -4.6°C | 159 mm | 90% | 2.5 m/s | 1 |
| 1994 🔥 | 8.0°C | 6.4°C | 4.9°C | 10.2°C | 1.0°C | 114 mm | 91% | 1.8 m/s | 0.9 |
| 1993 ❄️ | 2.9°C | 0.6°C | -1.7°C | 8.9°C | -7.9°C | 141 mm | 87% | 2.6 m/s | 1.1 |
| 1992 | 7.1°C | 5.7°C | 4.3°C | 11.4°C | -1.3°C | 283 mm | 89% | 2.6 m/s | 0.8 |
| 1991 | 3.9°C | 2.2°C | 0.5°C | 8.7°C | -7.9°C | 150 mm | 86% | 2.3 m/s | 1 |
| 1990 | 6.6°C | 4.8°C | 3.0°C | 10.0°C | -1.0°C | 218 mm | 88% | 2.6 m/s | 0.8 |
| 1989 | 5.0°C | 3.3°C | 1.5°C | 9.8°C | -10.0°C | 166 mm | 89% | 2.3 m/s | 0.8 |
| 1988 | 5.1°C | 3.2°C | 1.4°C | 10.4°C | -4.8°C | 121 mm | 87% | 2.7 m/s | 0.8 |
| 1987 | 5.6°C | 4.1°C | 2.6°C | 9.7°C | -1.8°C | 172 mm | 86% | 2.5 m/s | 0.9 |
| 1986 | 7.2°C | 5.4°C | 3.6°C | 10.9°C | -1.3°C | 220 mm | 90% | 2.5 m/s | 0.8 |
| 1985 | 4.5°C | 2.7°C | 0.9°C | 8.2°C | -2.0°C | 26 mm | 84% | 1.8 m/s | 1.1 |
| 1984 | 5.6°C | 3.8°C | 2.1°C | 9.0°C | -4.9°C | 217 mm | 88% | 2 m/s | 0.8 |
| 1983 | 7.2°C | 5.5°C | 3.8°C | 9.5°C | 0.8°C | 201 mm | 90% | 2.3 m/s | — |
| 1982 | 3.5°C | 2.0°C | 0.6°C | 6.8°C | -10.8°C | 278 mm | 91% | 2.4 m/s | — |
| 1981 | 7.9°C | 6.1°C | 4.3°C | 11.0°C | 1.4°C | 69 mm | 88% | 1.8 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 5.9°C with lows near 2.6°C (mean 4.3°C), based on 45 years of NASA POWER data.
January averages 185 mm of rainfall in Surrey, a relatively wet time of year. The wettest on record was 327 mm in 2020.
The hottest January reached 13°C in 2024. The coldest dipped to -11.5°C in 1996.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.5°C. Daytime highs moved from 5.7°C to 6.1°C and overnight lows from 2.3°C to 3°C over the same span.
January is one of the cooler months of the year in Surrey and a relatively wet time of year, so plan for around 5.9°C daytime highs and 2.6°C at night.
Not quite — January is the 2nd coolest month in Surrey, averaging 4.3°C.
For January in Surrey, pack warm layers and a jacket for chilly mornings, with typical highs of 5.9°C and lows of 2.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 88% — quite humid.
Average wind speed in January is 2.3 m/s. The windiest January on record averaged 2.8 m/s (2020).
The wettest January on record was 2020 with 327 mm. On average, January sees 185 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 Surrey 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.
