January is one of the cooler months of the year in Falmouth, with average highs near 9.6°C and lows around 7.4°C (mean 8.5°C). It is a relatively wet time of year, averaging 113 mm of rainfall and 84% relative humidity across the period.
January is one of the cooler months of the year in Falmouth. Across 45 years of records, the warmest January in Falmouth was 2007 — when the month averaged 10°C — while the coldest was 1987 at 5.2°C. Typical January days reach 9.6°C with nights near 7.4°C. The long-term trend is warming, about 0.2°C per decade.
January is a relatively wet time of year in Falmouth, averaging 113 mm of rainfall. The wettest January on record was 2016 with 215 mm, while the driest was 1992 at 31 mm.
Relative humidity in Falmouth during January averages 84%. The most humid January was 1982 at 89%, and the least humid was 1984 at 80%.
January receives about 0.8 kWh/m²/day of solar energy in Falmouth. The sunniest Januarys were 1992, 2003 and 2010, among others at 1 kWh/m²/day, and the cloudiest were 1995, 1996 and 2002, among others at 0.7.
Average wind speed in Falmouth during January is 7.4 m/s. The windiest January was 1984 at 9.6 m/s, while the calmest was 2022 at 5.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.0°C | 8.6°C | 8.8°C | 8.6°C | 8.8°C | +0.8°C |
| Avg High | 9.2°C | 9.7°C | 9.8°C | 9.6°C | 9.9°C | +0.7°C |
| Avg Low | 6.8°C | 7.4°C | 7.8°C | 7.5°C | 7.7°C | +0.9°C |
| Avg Rain | 118 mm | 121 mm | 95 mm | 118 mm | 111 mm | -8 mm |
January temperatures in Falmouth have risen by about 0.6°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -3°C (1987) to a record high of 13.2°C (2007).
Rainfall in January is a relatively wet time of year, averaging 113 mm, with a wettest year of 215 mm.
A quieter season to visit Falmouth
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Falmouth. That said, January — with days averaging 9.6°C and nights around 7.4°C (mean 8.5°C) and higher rainfall (113 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 | 10.0°C | 8.8°C | 7.6°C | 13.1°C | 5.1°C | 130 mm | 82% | 6.6 m/s | 0.9 |
| 2024 | 9.5°C | 8.4°C | 7.4°C | 13.2°C | 3.5°C | 92 mm | 83% | 7.3 m/s | 0.9 |
| 2023 | 10.0°C | 8.9°C | 7.8°C | 12.7°C | 4.4°C | 140 mm | 82% | 7.1 m/s | 0.9 |
| 2022 | 10.3°C | 9.2°C | 8.1°C | 13.0°C | 5.1°C | 51 mm | 83% | 5.4 m/s | 0.8 |
| 2021 | 8.9°C | 7.9°C | 6.8°C | 11.8°C | 4.1°C | 149 mm | 85% | 7 m/s | 0.8 |
| 2020 | 10.4°C | 9.3°C | 8.3°C | 13.1°C | 5.2°C | 105 mm | 85% | 7.1 m/s | 0.8 |
| 2019 | 9.5°C | 8.6°C | 7.6°C | 11.2°C | 4.4°C | 83 mm | 82% | 6 m/s | 0.8 |
| 2018 | 10.5°C | 9.4°C | 8.2°C | 13.1°C | 5.0°C | 137 mm | 85% | 8.7 m/s | 0.8 |
| 2017 | 9.7°C | 8.6°C | 7.6°C | 11.7°C | 4.4°C | 71 mm | 82% | 6.4 m/s | 0.8 |
| 2016 🌧️ | 10.6°C | 9.6°C | 8.5°C | 12.3°C | 6.2°C | 215 mm | 83% | 8.6 m/s | 0.8 |
| 2015 | 10.1°C | 8.9°C | 7.6°C | 12.6°C | 4.8°C | 136 mm | 81% | 8.2 m/s | 0.8 |
| 2014 | 10.3°C | 9.2°C | 8.0°C | 12.3°C | 5.3°C | 147 mm | 84% | 8.1 m/s | 0.8 |
| 2013 | 9.5°C | 8.5°C | 7.5°C | 12.2°C | 2.3°C | 126 mm | 85% | 6.7 m/s | 0.8 |
| 2012 | 10.4°C | 9.4°C | 8.5°C | 12.4°C | 5.7°C | 73 mm | 84% | 7.2 m/s | 0.8 |
| 2011 | 8.3°C | 7.3°C | 6.3°C | 11.4°C | 2.1°C | 103 mm | 86% | 6.3 m/s | 0.9 |
| 2010 | 7.4°C | 6.3°C | 5.2°C | 10.8°C | 2.0°C | 93 mm | 83% | 6.1 m/s | 1 |
| 2009 | 8.9°C | 7.9°C | 6.9°C | 11.2°C | 1.5°C | 140 mm | 83% | 7.3 m/s | 0.8 |
| 2008 | 10.7°C | 9.7°C | 8.7°C | 12.4°C | 7.1°C | 108 mm | 85% | 8.1 m/s | 0.8 |
| 2007 🔥 | 10.9°C | 10.0°C | 9.0°C | 13.2°C | 4.3°C | 88 mm | 84% | 8.6 m/s | 0.8 |
| 2006 | 9.0°C | 8.0°C | 7.1°C | 11.2°C | 3.7°C | 51 mm | 85% | 6.7 m/s | 0.9 |
| 2005 | 10.4°C | 9.4°C | 8.4°C | 12.9°C | 5.2°C | 66 mm | 84% | 8.5 m/s | 0.8 |
| 2004 | 10.3°C | 9.2°C | 8.2°C | 12.4°C | 3.8°C | 125 mm | 84% | 7.7 m/s | 0.8 |
| 2003 | 9.2°C | 8.2°C | 7.1°C | 12.9°C | 2.7°C | 90 mm | 82% | 8.2 m/s | 1 |
| 2002 | 10.6°C | 9.6°C | 8.6°C | 13.1°C | 5.6°C | 113 mm | 87% | 7.7 m/s | 0.7 |
| 2001 | 9.1°C | 8.1°C | 7.2°C | 12.8°C | 4.6°C | 125 mm | 83% | 7.3 m/s | 0.9 |
| 2000 | 9.0°C | 8.1°C | 7.1°C | 12.0°C | 4.6°C | 44 mm | 84% | 6.4 m/s | 0.9 |
| 1999 | 10.5°C | 9.3°C | 8.1°C | 12.7°C | 4.2°C | 125 mm | 84% | 7.7 m/s | 0.8 |
| 1998 | 10.3°C | 9.1°C | 7.8°C | 12.9°C | 4.2°C | 130 mm | 83% | 9 m/s | 0.8 |
| 1997 | 7.0°C | 6.1°C | 5.1°C | 10.6°C | -0.5°C | 35 mm | 89% | 6.2 m/s | 0.8 |
| 1996 | 10.2°C | 9.1°C | 8.0°C | 12.3°C | 0.5°C | 162 mm | 89% | 8.1 m/s | 0.7 |
| 1995 | 10.5°C | 9.1°C | 7.8°C | 12.2°C | 5.5°C | 179 mm | 84% | 8.7 m/s | 0.7 |
| 1994 | 9.6°C | 8.6°C | 7.5°C | 11.7°C | 4.7°C | 140 mm | 85% | 7.9 m/s | 0.9 |
| 1993 | 10.8°C | 9.6°C | 8.4°C | 12.4°C | 5.6°C | 123 mm | 87% | 7.8 m/s | 0.8 |
| 1992 | 8.5°C | 7.4°C | 6.4°C | 11.4°C | 3.9°C | 31 mm | 85% | 5.8 m/s | 1 |
| 1991 | 8.7°C | 7.5°C | 6.3°C | 12.4°C | 2.5°C | 118 mm | 81% | 7.1 m/s | 0.8 |
| 1990 | 10.9°C | 9.8°C | 8.8°C | 12.3°C | 6.2°C | 164 mm | 87% | 8 m/s | 0.8 |
| 1989 | 10.6°C | 9.4°C | 8.2°C | 12.5°C | 6.2°C | 61 mm | 83% | 5.9 m/s | 1 |
| 1988 | 10.4°C | 9.3°C | 8.1°C | 12.6°C | 6.5°C | 211 mm | 84% | 8.2 m/s | 0.9 |
| 1987 ❄️ | 6.3°C | 5.2°C | 4.2°C | 11.9°C | -3.0°C | 34 mm | 82% | 7.2 m/s | 0.7 |
| 1986 | 9.3°C | 8.1°C | 7.0°C | 12.1°C | 4.1°C | 139 mm | 82% | 8.2 m/s | 0.8 |
| 1985 | 7.1°C | 5.8°C | 4.5°C | 11.2°C | 0.6°C | 108 mm | 83% | 6.3 m/s | 0.9 |
| 1984 | 9.8°C | 8.3°C | 6.8°C | 12.6°C | 2.9°C | 191 mm | 80% | 9.6 m/s | 0.8 |
| 1983 | 10.2°C | 9.2°C | 8.1°C | 12.6°C | 5.3°C | 126 mm | 86% | 8.2 m/s | — |
| 1982 | 9.0°C | 8.0°C | 7.0°C | 11.7°C | 2.5°C | 145 mm | 89% | 7 m/s | — |
| 1981 | 9.7°C | 8.5°C | 7.4°C | 11.2°C | 3.7°C | 52 mm | 84% | 6.7 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 9.6°C with lows near 7.4°C (mean 8.5°C), based on 45 years of NASA POWER data.
January averages 113 mm of rainfall in Falmouth, a relatively wet time of year. The wettest on record was 215 mm in 2016.
The hottest January reached 13.2°C in 2007. The coldest dipped to -3°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 0.6°C. Daytime highs moved from 9.2°C to 9.7°C and overnight lows from 6.8°C to 7.5°C over the same span.
January is one of the cooler months of the year in Falmouth and a relatively wet time of year, so plan for around 9.6°C daytime highs and 7.4°C at night.
Not quite — January is the 2nd coolest month in Falmouth, averaging 8.5°C.
For January in Falmouth, pack warm layers and a jacket for chilly mornings, with typical highs of 9.6°C and lows of 7.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 84% — quite humid.
Average wind speed in January is 7.4 m/s. The windiest January on record averaged 9.6 m/s (1984).
The wettest January on record was 2016 with 215 mm. On average, January sees 113 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 Falmouth 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.
