December is one of the cooler months of the year in Scarborough, with average highs near 7°C and lows around 4.4°C (mean 5.7°C). It is a relatively wet time of year, averaging 78 mm of rainfall and 90% relative humidity across the period.
December is one of the cooler months of the year in Scarborough. Across 45 years of records, the warmest December in Scarborough was 2015 — when the month averaged 8.2°C — while the coldest was 1981 at 2.5°C. Typical December days reach 7°C with nights near 4.4°C. The long-term trend is warming, about 0.3°C per decade.
December is a relatively wet time of year in Scarborough, averaging 78 mm of rainfall. The wettest December on record was 2023 with 151 mm, while the driest was 1988 at 35 mm.
Relative humidity in Scarborough during December averages 90%. The most humid December was 2019 at 93%, and the least humid was 1995 at 84%.
December receives about 0.5 kWh/m²/day of solar energy in Scarborough. The sunniest Decembers were 2020, 2022 and 2024, among others at 0.5 kWh/m²/day, and the cloudiest were 2015, 2021 and 2023, among others at 0.4.
Average wind speed in Scarborough during December is 6 m/s. The windiest December was 2013 at 7.5 m/s, while the calmest was 2010 at 4.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 5.5°C | 5.2°C | 5.7°C | 5.9°C | 6.6°C | +1.1°C |
| Avg High | 6.8°C | 6.6°C | 7.0°C | 7.3°C | 7.8°C | +1°C |
| Avg Low | 4.1°C | 3.9°C | 4.4°C | 4.5°C | 5.3°C | +1.2°C |
| Avg Rain | 68 mm | 75 mm | 69 mm | 75 mm | 115 mm | +47 mm |
December temperatures in Scarborough have risen by about 1.8°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -2.2°C (1992) to a record high of 13°C (1994).
Rainfall in December is a relatively wet time of year, averaging 78 mm, with a wettest year of 151 mm.
A quieter season to visit Scarborough
If your dates are flexible, the more temperate months of August and July tend to be the most comfortable for visiting Scarborough. That said, December — with days averaging 7°C and nights around 4.4°C (mean 5.7°C) and moderate rainfall (78 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 | 8.6°C | 7.3°C | 5.9°C | 12.7°C | 1.7°C | 121 mm | 91% | 6.1 m/s | — |
| 2024 | 8.6°C | 7.4°C | 6.2°C | 11.8°C | 3.9°C | 83 mm | 90% | 6.4 m/s | 0.5 |
| 2023 🌧️ | 8.4°C | 7.1°C | 5.8°C | 12.0°C | 2.3°C | 151 mm | 90% | 6.7 m/s | 0.4 |
| 2022 | 6.5°C | 5.2°C | 3.9°C | 10.4°C | 0.9°C | 92 mm | 90% | 5.4 m/s | 0.5 |
| 2021 | 7.6°C | 6.2°C | 4.7°C | 12.0°C | 2.0°C | 96 mm | 91% | 5.1 m/s | 0.4 |
| 2020 | 7.2°C | 6.1°C | 5.0°C | 11.1°C | 1.4°C | 145 mm | 91% | 5.6 m/s | 0.5 |
| 2019 | 7.4°C | 6.2°C | 4.9°C | 11.1°C | 2.8°C | 76 mm | 93% | 6.1 m/s | 0.5 |
| 2018 | 7.8°C | 6.4°C | 5.1°C | 11.0°C | 2.2°C | 78 mm | 92% | 5.4 m/s | 0.5 |
| 2017 | 6.7°C | 5.3°C | 3.9°C | 11.1°C | 0.7°C | 53 mm | 91% | 5.9 m/s | 0.5 |
| 2016 | 8.1°C | 6.8°C | 5.5°C | 11.5°C | 1.8°C | 42 mm | 92% | 5.4 m/s | 0.5 |
| 2015 🔥 | 9.9°C | 8.2°C | 6.5°C | 12.8°C | 3.3°C | 120 mm | 91% | 7.2 m/s | 0.4 |
| 2014 | 7.2°C | 5.8°C | 4.5°C | 11.8°C | 1.8°C | 53 mm | 89% | 6.4 m/s | 0.5 |
| 2013 | 8.1°C | 6.3°C | 4.4°C | 11.6°C | 2.0°C | 54 mm | 91% | 7.5 m/s | 0.5 |
| 2012 | 6.3°C | 5.0°C | 3.8°C | 10.0°C | 0.7°C | 144 mm | 91% | 6.3 m/s | 0.4 |
| 2011 | 7.4°C | 5.9°C | 4.4°C | 11.5°C | 1.7°C | 77 mm | 90% | 7.4 m/s | 0.5 |
| 2010 | 3.7°C | 2.6°C | 1.6°C | 7.1°C | -1.0°C | 52 mm | 87% | 4.8 m/s | 0.5 |
| 2009 | 5.7°C | 4.7°C | 3.7°C | 10.0°C | 0.2°C | 85 mm | 89% | 5.3 m/s | 0.5 |
| 2008 | 6.4°C | 5.0°C | 3.7°C | 10.7°C | 0.2°C | 68 mm | 90% | 5.1 m/s | 0.5 |
| 2007 | 7.1°C | 5.6°C | 4.2°C | 11.8°C | -0.8°C | 60 mm | 92% | 5.9 m/s | 0.4 |
| 2006 | 8.2°C | 6.8°C | 5.3°C | 12.1°C | 2.3°C | 60 mm | 91% | 6.1 m/s | 0.5 |
| 2005 | 7.1°C | 5.8°C | 4.5°C | 10.0°C | 0.6°C | 53 mm | 90% | 5.6 m/s | 0.5 |
| 2004 | 7.7°C | 6.1°C | 4.5°C | 10.4°C | 1.7°C | 41 mm | 91% | 5.9 m/s | 0.5 |
| 2003 | 7.2°C | 5.8°C | 4.4°C | 10.6°C | 1.2°C | 76 mm | 90% | 5.6 m/s | 0.5 |
| 2002 | 6.9°C | 6.1°C | 5.3°C | 10.5°C | 2.1°C | 106 mm | 88% | 5.6 m/s | 0.4 |
| 2001 | 6.8°C | 5.3°C | 3.8°C | 11.2°C | 1.0°C | 60 mm | 89% | 5.6 m/s | 0.5 |
| 2000 | 6.9°C | 5.9°C | 4.9°C | 11.6°C | 0.9°C | 82 mm | 89% | 6.3 m/s | 0.5 |
| 1999 | 6.4°C | 4.9°C | 3.5°C | 11.1°C | 0.6°C | 78 mm | 89% | 7.3 m/s | 0.5 |
| 1998 | 7.2°C | 5.8°C | 4.5°C | 11.6°C | 0.9°C | 61 mm | 92% | 6.3 m/s | 0.4 |
| 1997 | 7.7°C | 6.4°C | 5.1°C | 11.4°C | 2.0°C | 97 mm | 91% | 6.2 m/s | 0.4 |
| 1996 | 5.6°C | 4.3°C | 3.1°C | 9.0°C | 0.6°C | 72 mm | 87% | 5.6 m/s | 0.4 |
| 1995 | 5.5°C | 4.5°C | 3.6°C | 9.4°C | -1.7°C | 87 mm | 84% | 5.5 m/s | 0.4 |
| 1994 | 8.0°C | 6.3°C | 4.6°C | 13.0°C | 0.9°C | 80 mm | 90% | 6.8 m/s | 0.5 |
| 1993 | 6.4°C | 5.0°C | 3.6°C | 11.1°C | 0.4°C | 83 mm | 90% | 6.9 m/s | 0.5 |
| 1992 | 5.9°C | 4.5°C | 3.1°C | 11.0°C | -2.2°C | 58 mm | 89% | 5.2 m/s | 0.5 |
| 1991 | 6.7°C | 5.1°C | 3.6°C | 11.3°C | 0.0°C | 38 mm | 90% | 5.2 m/s | 0.5 |
| 1990 | 6.9°C | 5.3°C | 3.8°C | 10.3°C | 1.4°C | 99 mm | 88% | 6.5 m/s | 0.4 |
| 1989 | 7.0°C | 5.8°C | 4.6°C | 10.7°C | 2.4°C | 70 mm | 88% | 5 m/s | 0.4 |
| 1988 | 8.3°C | 7.0°C | 5.6°C | 10.6°C | 3.1°C | 35 mm | 91% | 6.4 m/s | 0.4 |
| 1987 | 7.6°C | 6.5°C | 5.4°C | 11.4°C | 2.4°C | 54 mm | 89% | 5.3 m/s | 0.4 |
| 1986 | 7.4°C | 5.7°C | 3.9°C | 12.0°C | 2.2°C | 101 mm | 90% | 7.3 m/s | 0.4 |
| 1985 | 7.0°C | 5.8°C | 4.7°C | 11.8°C | -0.3°C | 73 mm | 91% | 5.7 m/s | 0.4 |
| 1984 | 7.1°C | 5.7°C | 4.4°C | 11.0°C | 1.3°C | 37 mm | 91% | 5.6 m/s | 0.4 |
| 1983 | 7.2°C | 5.7°C | 4.3°C | 11.2°C | 1.7°C | 107 mm | 91% | 6.6 m/s | — |
| 1982 | 5.8°C | 4.4°C | 2.9°C | 11.2°C | 0.5°C | 66 mm | 90% | 6.2 m/s | — |
| 1981 ❄️ | 3.7°C | 2.5°C | 1.3°C | 9.7°C | -1.5°C | 70 mm | 85% | 5.3 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 7°C with lows near 4.4°C (mean 5.7°C), based on 45 years of NASA POWER data.
December averages 78 mm of rainfall in Scarborough, a relatively wet time of year. The wettest on record was 151 mm in 2023.
The hottest December reached 13°C in 1994. The coldest dipped to -2.2°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.8°C. Daytime highs moved from 6.2°C to 7.9°C and overnight lows from 3.5°C to 5.3°C over the same span.
December is one of the cooler months of the year in Scarborough and a relatively wet time of year, so plan for around 7°C daytime highs and 4.4°C at night.
Not quite — December is the 3rd coolest month in Scarborough, averaging 5.7°C.
For December in Scarborough, pack warm layers and a jacket for chilly mornings, with typical highs of 7°C and lows of 4.4°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 90% — quite humid.
Average wind speed in December is 6 m/s. The windiest December on record averaged 7.5 m/s (2013).
The wettest December on record was 2023 with 151 mm. On average, December sees 78 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 Scarborough 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.
