December is one of the cooler months of the year in Saltash, with average highs near 8.9°C and lows around 5.7°C (mean 7.3°C). It is a relatively wet time of year, averaging 136 mm of rainfall and 90% relative humidity across the period.
December is one of the cooler months of the year in Saltash. Across 45 years of records, the warmest December in Saltash was 2015 — when the month averaged 10.6°C — while the coldest was 2010 at 2.8°C. Typical December days reach 8.9°C with nights near 5.7°C. The long-term trend is warming, about 0.3°C per decade.
December is a relatively wet time of year in Saltash, averaging 136 mm of rainfall. The wettest December on record was 1999 with 278 mm, while the driest was 1991 at 43 mm.
Relative humidity in Saltash during December averages 90%. The most humid December was 1987 at 93%, and the least humid was 2011 at 87%.
December receives about 0.7 kWh/m²/day of solar energy in Saltash. The sunniest Decembers were 2001 and 2010 at 0.8 kWh/m²/day, and the cloudiest were 2015 and 2018 at 0.5.
Average wind speed in Saltash during December is 5.4 m/s. The windiest December was 2015 at 7.1 m/s, while the calmest was 2016 at 3.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.2°C | 6.7°C | 7.1°C | 7.8°C | 8.0°C | +0.8°C |
| Avg High | 8.9°C | 8.5°C | 8.7°C | 9.4°C | 9.5°C | +0.6°C |
| Avg Low | 5.5°C | 5.0°C | 5.4°C | 6.2°C | 6.6°C | +1.1°C |
| Avg Rain | 132 mm | 139 mm | 114 mm | 141 mm | 168 mm | +36 mm |
December temperatures in Saltash have risen by about 1.3°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -4.5°C (1996) to a record high of 14.7°C (1985).
Rainfall in December is a relatively wet time of year, averaging 136 mm, with a wettest year of 278 mm.
A quieter season to visit Saltash
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Saltash. That said, December — with days averaging 8.9°C and nights around 5.7°C (mean 7.3°C) and higher rainfall (136 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 | 9.6°C | 8.1°C | 6.6°C | 13.6°C | 1.8°C | 205 mm | 91% | 5.7 m/s | — |
| 2024 | 9.9°C | 8.4°C | 7.0°C | 13.4°C | 4.5°C | 89 mm | 91% | 5.4 m/s | 0.6 |
| 2023 | 10.7°C | 9.3°C | 7.9°C | 12.7°C | 0.5°C | 186 mm | 91% | 6.2 m/s | 0.6 |
| 2022 | 7.8°C | 6.3°C | 4.7°C | 12.9°C | -0.7°C | 142 mm | 91% | 4.9 m/s | 0.7 |
| 2021 | 10.3°C | 8.8°C | 7.3°C | 13.0°C | 4.3°C | 134 mm | 92% | 5.5 m/s | 0.6 |
| 2020 | 8.8°C | 7.3°C | 5.8°C | 12.5°C | 1.1°C | 252 mm | 91% | 5.7 m/s | 0.7 |
| 2019 | 9.4°C | 7.8°C | 6.2°C | 12.3°C | 1.2°C | 179 mm | 89% | 5.6 m/s | 0.7 |
| 2018 | 10.6°C | 9.3°C | 7.9°C | 13.2°C | 3.7°C | 211 mm | 91% | 5.3 m/s | 0.5 |
| 2017 | 9.1°C | 7.5°C | 5.8°C | 12.5°C | 2.0°C | 161 mm | 89% | 5.4 m/s | 0.7 |
| 2016 | 10.2°C | 8.6°C | 7.1°C | 13.3°C | 2.4°C | 53 mm | 91% | 3.8 m/s | 0.6 |
| 2015 🔥 | 12.0°C | 10.6°C | 9.2°C | 13.3°C | 5.3°C | 175 mm | 91% | 7.1 m/s | 0.5 |
| 2014 | 9.1°C | 7.3°C | 5.5°C | 11.6°C | 0.5°C | 85 mm | 88% | 5.4 m/s | 0.7 |
| 2013 | 9.9°C | 8.0°C | 6.0°C | 12.4°C | 2.9°C | 123 mm | 88% | 5.5 m/s | 0.6 |
| 2012 | 9.0°C | 7.5°C | 6.0°C | 12.5°C | 1.6°C | 226 mm | 90% | 5.7 m/s | 0.6 |
| 2011 | 9.8°C | 8.3°C | 6.8°C | 12.0°C | 3.9°C | 147 mm | 87% | 6.4 m/s | 0.6 |
| 2010 ❄️ | 4.5°C | 2.8°C | 1.0°C | 10.5°C | -2.3°C | 47 mm | 91% | 4.1 m/s | 0.8 |
| 2009 | 7.6°C | 5.9°C | 4.1°C | 11.8°C | -0.8°C | 117 mm | 90% | 4.7 m/s | 0.7 |
| 2008 | 7.7°C | 6.1°C | 4.6°C | 11.3°C | 1.7°C | 80 mm | 90% | 4.8 m/s | 0.7 |
| 2007 | 9.6°C | 7.9°C | 6.2°C | 13.6°C | 2.7°C | 112 mm | 88% | 6.1 m/s | 0.7 |
| 2006 | 9.9°C | 8.3°C | 6.7°C | 13.1°C | 1.6°C | 118 mm | 89% | 6 m/s | 0.6 |
| 2005 | 8.2°C | 6.5°C | 4.9°C | 11.2°C | -0.8°C | 117 mm | 89% | 4.4 m/s | 0.7 |
| 2004 | 9.5°C | 7.8°C | 6.1°C | 12.2°C | 2.1°C | 83 mm | 90% | 4.4 m/s | 0.6 |
| 2003 | 8.8°C | 7.2°C | 5.6°C | 12.2°C | 2.0°C | 118 mm | 90% | 5.2 m/s | 0.6 |
| 2002 | 8.8°C | 7.5°C | 6.2°C | 12.1°C | -0.3°C | 153 mm | 92% | 5.4 m/s | 0.6 |
| 2001 | 7.8°C | 5.8°C | 3.9°C | 12.8°C | -0.6°C | 62 mm | 89% | 5 m/s | 0.8 |
| 2000 | 8.9°C | 7.5°C | 6.1°C | 12.6°C | 0.2°C | 180 mm | 91% | 6.2 m/s | 0.7 |
| 1999 🌧️ | 9.1°C | 7.4°C | 5.8°C | 12.3°C | -0.4°C | 278 mm | 89% | 6.6 m/s | 0.6 |
| 1998 | 9.4°C | 7.5°C | 5.6°C | 12.5°C | -0.4°C | 157 mm | 91% | 5.2 m/s | 0.6 |
| 1997 | 9.5°C | 7.9°C | 6.2°C | 13.2°C | 0.0°C | 140 mm | 90% | 5.5 m/s | 0.7 |
| 1996 | 6.1°C | 4.5°C | 2.9°C | 11.7°C | -4.5°C | 52 mm | 91% | 4.7 m/s | 0.6 |
| 1995 | 7.4°C | 5.5°C | 3.6°C | 13.1°C | -1.7°C | 127 mm | 92% | 4.8 m/s | 0.6 |
| 1994 | 10.2°C | 8.7°C | 7.2°C | 13.4°C | 2.0°C | 170 mm | 90% | 6 m/s | 0.7 |
| 1993 | 9.1°C | 7.3°C | 5.6°C | 12.2°C | 1.0°C | 229 mm | 89% | 6.8 m/s | 0.7 |
| 1992 | 7.9°C | 6.1°C | 4.3°C | 12.4°C | 1.2°C | 106 mm | 91% | 4.9 m/s | 0.7 |
| 1991 | 8.5°C | 6.9°C | 5.3°C | 11.5°C | 1.4°C | 43 mm | 89% | 4.8 m/s | 0.7 |
| 1990 | 7.5°C | 5.6°C | 3.8°C | 11.6°C | -0.2°C | 91 mm | 88% | 5.3 m/s | 0.7 |
| 1989 | 9.1°C | 7.5°C | 6.0°C | 12.5°C | 1.5°C | 179 mm | 91% | 5.9 m/s | 0.7 |
| 1988 | 10.0°C | 8.3°C | 6.7°C | 12.1°C | 2.2°C | 59 mm | 92% | 4.1 m/s | 0.6 |
| 1987 | 8.6°C | 7.4°C | 6.2°C | 12.7°C | 0.6°C | 98 mm | 93% | 5.9 m/s | 0.7 |
| 1986 | 9.3°C | 7.5°C | 5.6°C | 12.5°C | 0.8°C | 162 mm | 89% | 6.1 m/s | 0.7 |
| 1985 | 9.6°C | 8.1°C | 6.6°C | 14.7°C | -1.6°C | 140 mm | 91% | 4.9 m/s | 0.7 |
| 1984 | 9.2°C | 7.2°C | 5.3°C | 11.4°C | 1.4°C | 122 mm | 90% | 4.1 m/s | 0.7 |
| 1983 | 9.5°C | 7.6°C | 5.7°C | 12.3°C | 1.5°C | 120 mm | 89% | 5.3 m/s | — |
| 1982 | 8.2°C | 6.5°C | 4.9°C | 12.6°C | 1.6°C | 137 mm | 90% | 5.4 m/s | — |
| 1981 | 6.8°C | 4.9°C | 2.9°C | 10.9°C | -2.2°C | 172 mm | 89% | 5 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 8.9°C with lows near 5.7°C (mean 7.3°C), based on 45 years of NASA POWER data.
December averages 136 mm of rainfall in Saltash, a relatively wet time of year. The wettest on record was 278 mm in 1999.
The hottest December reached 14.7°C in 1985. The coldest dipped to -4.5°C in 1996.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.3°C. Daytime highs moved from 8.7°C to 9.7°C and overnight lows from 5.1°C to 6.7°C over the same span.
December is one of the cooler months of the year in Saltash and a relatively wet time of year, so plan for around 8.9°C daytime highs and 5.7°C at night.
Not quite — December is the 4th coolest month in Saltash, averaging 7.3°C.
For December in Saltash, pack warm layers and a jacket for chilly mornings, with typical highs of 8.9°C and lows of 5.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 90% — quite humid.
Average wind speed in December is 5.4 m/s. The windiest December on record averaged 7.1 m/s (2015).
The wettest December on record was 1999 with 278 mm. On average, December sees 136 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 Saltash behaves each December, 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 December specifically, along with year-by-year records and how the month has changed over the decades.
