December is one of the cooler months of the year in Gander, with average highs near -0.9°C and lows around -7.3°C (mean -4.1°C). It is about average for rainfall, averaging 105 mm of rainfall and 92% relative humidity across the period.
December is one of the cooler months of the year in Gander. Across 45 years of records, the warmest December in Gander was 2010 — when the month averaged 1.7°C — while the coldest was 1989 at -7.7°C. Typical December days reach -0.9°C with nights near -7.3°C. The long-term trend is warming, about 0.7°C per decade.
December is about average for rainfall in Gander, averaging 105 mm of rainfall. The wettest December on record was 1993 with 191 mm, while the driest was 1986 at 50 mm.
Relative humidity in Gander during December averages 92%. The most humid December was 1995 at 98%, and the least humid was 1990 at 86%.
December receives about 0.8 kWh/m²/day of solar energy in Gander. The sunniest Decembers were 1987 and 2024 at 1 kWh/m²/day, and the cloudiest was 1984 at 0.5.
Average wind speed in Gander during December is 0.9 m/s. The windiest Decembers were 1998, 2010 and 2021 at 1.1 m/s, while the calmest were 2011, 2014 and 2024, among others at 0.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -5.6°C | -4.7°C | -3.7°C | -3.6°C | -2.1°C | +3.5°C |
| Avg High | -2.2°C | -1.3°C | -0.5°C | -0.7°C | 0.9°C | +3.1°C |
| Avg Low | -9.1°C | -8.2°C | -7.0°C | -6.5°C | -5.2°C | +3.9°C |
| Avg Rain | 103 mm | 106 mm | 135 mm | 88 mm | 88 mm | -14 mm |
December temperatures in Gander have risen by about 2.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -24.7°C (1993) to a record high of 15.3°C (2008).
Rainfall in December is about average for rainfall, averaging 105 mm, with a wettest year of 191 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.6°C per decade while lows rose 0.9°C per decade, narrowing the gap between day and night.
A quieter season to visit Gander
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Gander. That said, December — with days averaging -0.9°C and nights around -7.3°C (mean -4.1°C) and higher rainfall (105 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 | -0.6°C | -3.9°C | -7.2°C | 10.3°C | -16.6°C | 152 mm | 94% | 1 m/s | — |
| 2024 | 1.3°C | -2.0°C | -5.3°C | 12.8°C | -12.6°C | 76 mm | 89% | 0.8 m/s | 1 |
| 2023 | 1.5°C | -1.7°C | -4.9°C | 12.3°C | -12.6°C | 63 mm | 91% | 1 m/s | 0.8 |
| 2022 | 0.5°C | -2.1°C | -4.6°C | 5.8°C | -12.6°C | 78 mm | 93% | 0.9 m/s | 0.8 |
| 2021 | 0.1°C | -2.9°C | -6.0°C | 14.2°C | -13.3°C | 88 mm | 87% | 1.1 m/s | 0.9 |
| 2020 | 2.8°C | -0.2°C | -3.1°C | 12.8°C | -10.2°C | 71 mm | 94% | 0.9 m/s | 0.8 |
| 2019 | -0.6°C | -3.8°C | -7.1°C | 9.3°C | -14.0°C | 80 mm | 90% | 1 m/s | 0.7 |
| 2018 | -2.5°C | -5.5°C | -8.5°C | 4.3°C | -15.7°C | 53 mm | 93% | 0.9 m/s | 0.9 |
| 2017 | -0.3°C | -3.1°C | -6.0°C | 8.3°C | -12.1°C | 93 mm | 90% | 0.9 m/s | 0.7 |
| 2016 | -1.9°C | -5.6°C | -9.4°C | 2.6°C | -20.4°C | 94 mm | 93% | 1 m/s | 0.8 |
| 2015 | -1.3°C | -4.2°C | -7.2°C | 4.8°C | -15.7°C | 56 mm | 87% | 0.9 m/s | 0.8 |
| 2014 | 0.7°C | -2.3°C | -5.3°C | 10.6°C | -12.5°C | 66 mm | 87% | 0.8 m/s | 0.9 |
| 2013 | -4.1°C | -7.5°C | -10.8°C | 9.2°C | -21.0°C | 110 mm | 91% | 0.9 m/s | 0.8 |
| 2012 | 0.1°C | -2.2°C | -4.6°C | 6.7°C | -10.8°C | 96 mm | 91% | 1 m/s | 0.8 |
| 2011 | -0.2°C | -3.3°C | -6.3°C | 12.6°C | -15.9°C | 54 mm | 88% | 0.8 m/s | 0.9 |
| 2010 🔥 | 3.5°C | 1.7°C | -0.1°C | 9.6°C | -7.5°C | 181 mm | 95% | 1.1 m/s | 0.7 |
| 2009 | -0.2°C | -2.5°C | -4.8°C | 8.8°C | -14.7°C | 112 mm | 93% | 1 m/s | 0.7 |
| 2008 | 1.6°C | -2.6°C | -6.9°C | 15.3°C | -16.9°C | 124 mm | 86% | 1 m/s | 0.7 |
| 2007 | -4.0°C | -7.6°C | -11.2°C | 2.3°C | -20.4°C | 137 mm | 97% | 0.9 m/s | 0.9 |
| 2006 | -1.8°C | -5.0°C | -8.2°C | 5.1°C | -16.6°C | 127 mm | 94% | 0.9 m/s | 0.8 |
| 2005 | 0.1°C | -2.4°C | -5.0°C | 7.0°C | -13.0°C | 158 mm | 91% | 0.9 m/s | 0.8 |
| 2004 | 0.8°C | -3.1°C | -7.0°C | 10.4°C | -18.8°C | 167 mm | 91% | 0.9 m/s | 0.8 |
| 2003 | 0.6°C | -2.2°C | -5.1°C | 7.2°C | -12.9°C | 124 mm | 94% | 0.9 m/s | 0.7 |
| 2002 | -1.7°C | -5.0°C | -8.3°C | 0.8°C | -17.5°C | 133 mm | 97% | 1 m/s | 0.9 |
| 2001 | 0.6°C | -2.0°C | -4.6°C | 4.9°C | -11.9°C | 123 mm | 93% | 0.8 m/s | 0.8 |
| 2000 | -1.3°C | -5.0°C | -8.7°C | 7.2°C | -18.1°C | 145 mm | 95% | 1 m/s | 0.8 |
| 1999 | -0.3°C | -3.1°C | -5.8°C | 7.5°C | -13.0°C | 111 mm | 93% | 1 m/s | 0.6 |
| 1998 | -0.7°C | -4.4°C | -8.0°C | 8.1°C | -15.2°C | 87 mm | 87% | 1.1 m/s | 0.8 |
| 1997 | -2.5°C | -5.5°C | -8.6°C | 1.3°C | -18.9°C | 90 mm | 97% | 0.8 m/s | 0.8 |
| 1996 | 0.8°C | -1.7°C | -4.2°C | 9.7°C | -13.3°C | 78 mm | 90% | 1 m/s | 0.7 |
| 1995 | -2.6°C | -5.8°C | -8.9°C | 0.8°C | -18.0°C | 154 mm | 98% | 0.9 m/s | 0.9 |
| 1994 | -2.7°C | -6.1°C | -9.6°C | 0.2°C | -21.9°C | 113 mm | 97% | 0.9 m/s | 0.9 |
| 1993 🌧️ | 0.1°C | -3.5°C | -7.2°C | 9.2°C | -24.7°C | 191 mm | 95% | 0.9 m/s | 0.6 |
| 1992 | -2.8°C | -6.9°C | -10.9°C | 6.2°C | -19.5°C | 87 mm | 95% | 0.9 m/s | 0.8 |
| 1991 | -3.0°C | -6.9°C | -10.8°C | 5.0°C | -18.1°C | 73 mm | 88% | 0.9 m/s | 0.7 |
| 1990 | 0.8°C | -3.6°C | -8.0°C | 10.2°C | -19.0°C | 80 mm | 86% | 1 m/s | 0.7 |
| 1989 ❄️ | -4.3°C | -7.7°C | -11.2°C | 0.3°C | -18.1°C | 93 mm | 97% | 1 m/s | 0.7 |
| 1988 | -2.2°C | -6.0°C | -9.8°C | 4.0°C | -19.8°C | 92 mm | 91% | 1 m/s | 0.8 |
| 1987 | -2.1°C | -4.8°C | -7.5°C | 6.1°C | -21.2°C | 132 mm | 96% | 1 m/s | 1 |
| 1986 | -3.0°C | -6.9°C | -10.8°C | 0.8°C | -20.6°C | 50 mm | 95% | 0.9 m/s | 0.7 |
| 1985 | -3.0°C | -6.2°C | -9.3°C | 5.8°C | -17.8°C | 93 mm | 91% | 1 m/s | 0.9 |
| 1984 | -1.6°C | -5.1°C | -8.6°C | 10.2°C | -21.2°C | 66 mm | 87% | 1 m/s | 0.5 |
| 1983 | -1.4°C | -5.1°C | -8.8°C | 5.0°C | -15.6°C | 86 mm | 89% | 1 m/s | — |
| 1982 | -2.0°C | -6.1°C | -10.2°C | 5.6°C | -20.5°C | 136 mm | 93% | 0.9 m/s | — |
| 1981 | 0.2°C | -2.6°C | -5.3°C | 7.4°C | -15.4°C | 175 mm | 95% | 0.9 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around -0.9°C with lows near -7.3°C (mean -4.1°C), based on 45 years of NASA POWER data.
December averages 105 mm of rainfall in Gander, about average for rainfall. The wettest on record was 191 mm in 1993.
The hottest December reached 15.3°C in 2008. The coldest dipped to -24.7°C in 1993.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 2.5°C. Daytime highs moved from -1.6°C to 0.6°C and overnight lows from -8.4°C to -5.6°C over the same span.
December is one of the cooler months of the year in Gander and about average for rainfall, so plan for around -0.9°C daytime highs and -7.3°C at night.
Not quite — December is the 3rd coolest month in Gander, averaging -4.1°C.
For December in Gander, pack warm layers and a jacket for chilly mornings, with typical highs of -0.9°C and lows of -7.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 92% — quite humid.
Average wind speed in December is 0.9 m/s. The windiest December on record averaged 1.1 m/s (1998).
The wettest December on record was 1993 with 191 mm. On average, December sees 105 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 Gander 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.
