December is one of the cooler months of the year in Hartlepool, with average highs near 6°C and lows around 2.3°C (mean 4.2°C). It is about average for rainfall, averaging 74 mm of rainfall and 94% relative humidity across the period.
December is one of the cooler months of the year in Hartlepool. Across 45 years of records, the warmest December in Hartlepool was 2015 — when the month averaged 7.1°C — while the coldest was 1981 at -0.1°C. Typical December days reach 6°C with nights near 2.3°C. The long-term trend is warming, about 0.4°C per decade.
December is about average for rainfall in Hartlepool, averaging 74 mm of rainfall. The wettest December on record was 2023 with 148 mm, while the driest was 1988 at 32 mm.
Relative humidity in Hartlepool during December averages 94%. The most humid December was 2019 at 96%, and the least humid was 1995 at 90%.
December receives about 0.5 kWh/m²/day of solar energy in Hartlepool. 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 Hartlepool during December is 4.5 m/s. The windiest Decembers were 2013 and 2015 at 5.8 m/s, while the calmest was 2010 at 3.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 3.9°C | 3.6°C | 4.1°C | 4.4°C | 5.1°C | +1.2°C |
| Avg High | 5.7°C | 5.5°C | 5.9°C | 6.3°C | 6.9°C | +1.2°C |
| Avg Low | 2.0°C | 1.7°C | 2.2°C | 2.5°C | 3.4°C | +1.4°C |
| Avg Rain | 67 mm | 72 mm | 68 mm | 69 mm | 105 mm | +38 mm |
December temperatures in Hartlepool have risen by about 2°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -6.8°C (1995) to a record high of 13°C (2015).
Rainfall in December is about average for rainfall, averaging 74 mm, with a wettest year of 148 mm.
A quieter season to visit Hartlepool
If your dates are flexible, the more temperate months of July and August tend to be the most comfortable for visiting Hartlepool. That said, December — with days averaging 6°C and nights around 2.3°C (mean 4.2°C) and moderate rainfall (74 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 | 7.7°C | 6.0°C | 4.3°C | 12.8°C | -1.9°C | 114 mm | 94% | 4.6 m/s | — |
| 2024 | 8.0°C | 6.4°C | 4.8°C | 11.5°C | 1.2°C | 77 mm | 93% | 5 m/s | 0.5 |
| 2023 🌧️ | 7.5°C | 5.7°C | 4.0°C | 11.7°C | -0.6°C | 148 mm | 93% | 5.2 m/s | 0.4 |
| 2022 | 5.2°C | 3.3°C | 1.4°C | 10.2°C | -3.2°C | 78 mm | 95% | 3.9 m/s | 0.5 |
| 2021 | 6.7°C | 4.8°C | 2.9°C | 12.1°C | -1.2°C | 89 mm | 95% | 3.8 m/s | 0.4 |
| 2020 | 6.0°C | 4.5°C | 3.0°C | 11.1°C | -2.0°C | 123 mm | 95% | 4 m/s | 0.5 |
| 2019 | 6.4°C | 4.8°C | 3.2°C | 10.9°C | -0.2°C | 67 mm | 96% | 4.6 m/s | 0.5 |
| 2018 | 6.9°C | 5.1°C | 3.3°C | 10.8°C | -1.0°C | 76 mm | 95% | 4 m/s | 0.5 |
| 2017 | 5.7°C | 3.7°C | 1.8°C | 11.2°C | -1.7°C | 46 mm | 95% | 4.4 m/s | 0.5 |
| 2016 | 7.3°C | 5.5°C | 3.7°C | 11.4°C | -0.3°C | 41 mm | 95% | 4.1 m/s | 0.5 |
| 2015 🔥 | 9.3°C | 7.1°C | 4.8°C | 13.0°C | 0.8°C | 125 mm | 93% | 5.8 m/s | 0.4 |
| 2014 | 6.1°C | 4.2°C | 2.2°C | 11.6°C | -1.6°C | 43 mm | 94% | 4.9 m/s | 0.5 |
| 2013 | 7.5°C | 5.2°C | 2.9°C | 11.3°C | -0.6°C | 56 mm | 93% | 5.8 m/s | 0.5 |
| 2012 | 5.1°C | 3.4°C | 1.7°C | 10.0°C | -2.1°C | 135 mm | 95% | 4.7 m/s | 0.4 |
| 2011 | 6.6°C | 4.6°C | 2.6°C | 11.2°C | -1.5°C | 68 mm | 93% | 5.7 m/s | 0.5 |
| 2010 | 2.0°C | 0.3°C | -1.4°C | 6.1°C | -5.7°C | 38 mm | 94% | 3.3 m/s | 0.5 |
| 2009 | 4.3°C | 2.8°C | 1.4°C | 9.4°C | -2.1°C | 77 mm | 94% | 3.7 m/s | 0.5 |
| 2008 | 5.2°C | 3.2°C | 1.2°C | 10.4°C | -2.2°C | 62 mm | 95% | 3.7 m/s | 0.5 |
| 2007 | 5.9°C | 3.9°C | 1.9°C | 11.7°C | -3.4°C | 64 mm | 95% | 4.5 m/s | 0.4 |
| 2006 | 7.4°C | 5.4°C | 3.4°C | 11.8°C | -0.2°C | 68 mm | 94% | 4.8 m/s | 0.5 |
| 2005 | 6.2°C | 4.3°C | 2.5°C | 9.7°C | -2.3°C | 52 mm | 95% | 4 m/s | 0.5 |
| 2004 | 6.9°C | 4.7°C | 2.5°C | 10.4°C | -1.8°C | 37 mm | 95% | 4.5 m/s | 0.5 |
| 2003 | 6.1°C | 4.0°C | 1.9°C | 10.2°C | -2.1°C | 77 mm | 94% | 4.2 m/s | 0.5 |
| 2002 | 5.8°C | 4.5°C | 3.2°C | 9.9°C | -0.1°C | 111 mm | 92% | 3.9 m/s | 0.4 |
| 2001 | 5.6°C | 3.4°C | 1.1°C | 11.2°C | -2.2°C | 54 mm | 94% | 4 m/s | 0.5 |
| 2000 | 5.7°C | 4.4°C | 3.0°C | 11.3°C | -2.2°C | 82 mm | 94% | 4.8 m/s | 0.5 |
| 1999 | 5.2°C | 3.2°C | 1.2°C | 10.6°C | -3.9°C | 73 mm | 93% | 5.5 m/s | 0.5 |
| 1998 | 6.4°C | 4.5°C | 2.6°C | 12.1°C | -2.4°C | 55 mm | 95% | 4.8 m/s | 0.4 |
| 1997 | 6.7°C | 5.1°C | 3.4°C | 11.2°C | -1.2°C | 98 mm | 94% | 4.7 m/s | 0.4 |
| 1996 | 4.3°C | 2.7°C | 1.1°C | 8.4°C | -1.9°C | 71 mm | 92% | 4.1 m/s | 0.4 |
| 1995 | 3.8°C | 2.4°C | 1.0°C | 8.5°C | -6.8°C | 77 mm | 90% | 3.9 m/s | 0.4 |
| 1994 | 7.0°C | 4.9°C | 2.7°C | 12.9°C | -1.6°C | 79 mm | 94% | 5.3 m/s | 0.5 |
| 1993 | 5.4°C | 3.6°C | 1.7°C | 11.1°C | -2.3°C | 77 mm | 94% | 5.3 m/s | 0.5 |
| 1992 | 4.5°C | 2.5°C | 0.5°C | 11.0°C | -6.2°C | 61 mm | 95% | 3.9 m/s | 0.5 |
| 1991 | 5.7°C | 3.6°C | 1.5°C | 11.3°C | -4.1°C | 36 mm | 94% | 4 m/s | 0.5 |
| 1990 | 5.6°C | 3.7°C | 1.7°C | 10.0°C | -0.7°C | 95 mm | 92% | 5 m/s | 0.4 |
| 1989 | 5.6°C | 3.9°C | 2.2°C | 9.9°C | -1.4°C | 69 mm | 93% | 3.6 m/s | 0.4 |
| 1988 | 7.7°C | 5.9°C | 4.1°C | 10.0°C | -0.1°C | 32 mm | 94% | 5 m/s | 0.4 |
| 1987 | 6.5°C | 4.9°C | 3.4°C | 11.4°C | -1.1°C | 56 mm | 93% | 4 m/s | 0.4 |
| 1986 | 6.5°C | 4.3°C | 2.1°C | 11.9°C | -1.0°C | 99 mm | 94% | 5.6 m/s | 0.4 |
| 1985 | 6.1°C | 4.6°C | 3.0°C | 11.5°C | -3.7°C | 69 mm | 94% | 4.5 m/s | 0.4 |
| 1984 | 6.0°C | 4.2°C | 2.4°C | 11.1°C | -1.7°C | 38 mm | 95% | 4.1 m/s | 0.4 |
| 1983 | 6.4°C | 4.4°C | 2.4°C | 11.3°C | -1.3°C | 114 mm | 94% | 5 m/s | — |
| 1982 | 4.6°C | 2.7°C | 0.7°C | 10.6°C | -2.4°C | 63 mm | 95% | 4.7 m/s | — |
| 1981 ❄️ | 1.8°C | -0.1°C | -2.0°C | 9.1°C | -6.4°C | 63 mm | 92% | 3.7 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 6°C with lows near 2.3°C (mean 4.2°C), based on 45 years of NASA POWER data.
December averages 74 mm of rainfall in Hartlepool, about average for rainfall. The wettest on record was 148 mm in 2023.
The hottest December reached 13°C in 2015. The coldest dipped to -6.8°C in 1995.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 2°C. Daytime highs moved from 5°C to 7°C and overnight lows from 1.3°C to 3.5°C over the same span.
December is one of the cooler months of the year in Hartlepool and about average for rainfall, so plan for around 6°C daytime highs and 2.3°C at night.
Not quite — December is the 3rd coolest month in Hartlepool, averaging 4.2°C.
For December in Hartlepool, pack warm layers and a jacket for chilly mornings, with typical highs of 6°C and lows of 2.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 94% — quite humid.
Average wind speed in December is 4.5 m/s. The windiest December on record averaged 5.8 m/s (2013).
The wettest December on record was 2023 with 148 mm. On average, December sees 74 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 Hartlepool 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.
