December is one of the warmer months of the year in Bordertown, with average highs near 28.2°C and lows around 12.2°C (mean 20.2°C). It is one of the drier months, averaging 28 mm of rainfall and 52% relative humidity across the period.
December is one of the warmer months of the year in Bordertown. Across 45 years of records, the warmest December in Bordertown was 2015 — when the month averaged 23.4°C — while the coldest was 2001 at 16.8°C. Typical December days reach 28.2°C with nights near 12.2°C. The long-term trend is warming, about 0.3°C per decade.
December is one of the drier months in Bordertown, averaging 28 mm of rainfall. The wettest December on record was 2010 with 114 mm, while the driest was 2017 at 3 mm.
Relative humidity in Bordertown during December averages 52%. The most humid December was 1992 at 66%, and the least humid was 2015 at 39%.
December receives about 7.5 kWh/m²/day of solar energy in Bordertown. The sunniest December was 2021 at 8.7 kWh/m²/day, and the cloudiest was 1992 at 6.3.
Average wind speed in Bordertown during December is 3.6 m/s. The windiest December was 2005 at 4.2 m/s, while the calmest was 2015 at 3.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 19.8°C | 19.8°C | 20.1°C | 21.2°C | 20.1°C | +0.3°C |
| Avg High | 27.8°C | 27.7°C | 28.0°C | 29.3°C | 28.3°C | +0.5°C |
| Avg Low | 11.8°C | 11.9°C | 12.1°C | 13.1°C | 12.0°C | +0.2°C |
| Avg Rain | 32 mm | 29 mm | 29 mm | 26 mm | 20 mm | -11 mm |
December temperatures in Bordertown have risen by about 0.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 5.5°C (1994) to a record high of 48.2°C (2019).
Rainfall in December is one of the drier months, averaging 28 mm, with a wettest year of 114 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.4°C per decade while lows rose 0.2°C per decade, widening the gap between day and night.
One of the best times to visit Bordertown
December is one of the best times to visit Bordertown. Expect days averaging 28.2°C and nights around 12.2°C (mean 20.2°C) — warmer than Bordertown's yearly average — with low rainfall (28 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 28.8°C | 20.3°C | 11.8°C | 41.2°C | 7.3°C | 21 mm | 46% | 3.6 m/s | — |
| 2024 | 29.2°C | 21.1°C | 13.1°C | 41.9°C | 9.1°C | 17 mm | 52% | 3.5 m/s | 7.9 |
| 2023 | 27.9°C | 20.4°C | 12.8°C | 37.6°C | 8.8°C | 28 mm | 57% | 3.7 m/s | 6.5 |
| 2022 | 27.6°C | 19.5°C | 11.4°C | 40.8°C | 6.9°C | 28 mm | 54% | 3.5 m/s | 7.8 |
| 2021 | 29.5°C | 20.7°C | 11.9°C | 40.6°C | 7.3°C | 3 mm | 47% | 3.6 m/s | 8.7 |
| 2020 | 26.5°C | 18.8°C | 11.1°C | 37.2°C | 7.5°C | 25 mm | 52% | 3.9 m/s | 7.3 |
| 2019 | 31.7°C | 22.8°C | 13.8°C | 48.2°C | 7.5°C | 4 mm | 43% | 3.9 m/s | 8.1 |
| 2018 | 31.8°C | 23.3°C | 14.9°C | 42.7°C | 10.0°C | 9 mm | 45% | 3.6 m/s | 7 |
| 2017 | 29.1°C | 21.2°C | 13.3°C | 41.4°C | 9.0°C | 3 mm | 49% | 3.6 m/s | 7.2 |
| 2016 | 29.3°C | 21.0°C | 12.7°C | 40.3°C | 7.3°C | 24 mm | 48% | 3.6 m/s | 7.6 |
| 2015 🔥 | 32.3°C | 23.4°C | 14.6°C | 42.3°C | 7.6°C | 32 mm | 39% | 3.2 m/s | 8 |
| 2014 | 28.2°C | 20.5°C | 12.7°C | 36.6°C | 8.6°C | 13 mm | 51% | 3.5 m/s | 7.6 |
| 2013 | 28.5°C | 20.2°C | 11.8°C | 42.7°C | 6.8°C | 16 mm | 51% | 3.4 m/s | 7.5 |
| 2012 | 28.4°C | 20.4°C | 12.4°C | 38.9°C | 8.7°C | 15 mm | 49% | 3.6 m/s | 7.7 |
| 2011 | 29.0°C | 20.7°C | 12.3°C | 38.5°C | 7.1°C | 25 mm | 51% | 3.3 m/s | 8 |
| 2010 🌧️ | 25.1°C | 18.7°C | 12.2°C | 37.9°C | 6.7°C | 114 mm | 64% | 3.6 m/s | 7.3 |
| 2009 | 28.6°C | 20.3°C | 11.9°C | 40.6°C | 8.0°C | 28 mm | 52% | 3.4 m/s | 7.7 |
| 2008 | 24.7°C | 18.1°C | 11.5°C | 32.2°C | 7.4°C | 73 mm | 60% | 3.7 m/s | 6.9 |
| 2007 | 29.2°C | 21.0°C | 12.8°C | 43.6°C | 7.2°C | 28 mm | 50% | 3.4 m/s | 7.5 |
| 2006 | 29.4°C | 20.5°C | 11.6°C | 43.4°C | 6.9°C | 13 mm | 42% | 3.8 m/s | 8 |
| 2005 | 27.7°C | 20.2°C | 12.6°C | 43.7°C | 9.3°C | 32 mm | 53% | 4.2 m/s | 7.3 |
| 2004 | 28.4°C | 20.7°C | 13.0°C | 40.0°C | 8.1°C | 18 mm | 52% | 3.7 m/s | 7.6 |
| 2003 | 30.3°C | 21.8°C | 13.2°C | 40.4°C | 8.6°C | 36 mm | 51% | 3.6 m/s | 7.6 |
| 2002 | 28.8°C | 20.5°C | 12.1°C | 40.2°C | 6.3°C | 28 mm | 49% | 3.8 m/s | 7.6 |
| 2001 ❄️ | 23.8°C | 16.8°C | 9.7°C | 34.3°C | 5.9°C | 26 mm | 62% | 3.6 m/s | 6.7 |
| 2000 | 29.3°C | 20.7°C | 12.2°C | 38.5°C | 8.0°C | 11 mm | 48% | 3.6 m/s | 7.9 |
| 1999 | 27.1°C | 19.7°C | 12.3°C | 37.0°C | 7.3°C | 67 mm | 55% | 3.7 m/s | 7.2 |
| 1998 | 29.4°C | 21.1°C | 12.9°C | 43.0°C | 8.4°C | 10 mm | 51% | 3.6 m/s | 7.3 |
| 1997 | 28.5°C | 20.4°C | 12.3°C | 36.1°C | 8.0°C | 7 mm | 52% | 3.6 m/s | 7.6 |
| 1996 | 26.6°C | 18.5°C | 10.4°C | 36.9°C | 7.7°C | 17 mm | 51% | 3.6 m/s | 7.5 |
| 1995 | 26.4°C | 18.3°C | 10.2°C | 36.4°C | 5.8°C | 27 mm | 53% | 3.7 m/s | 7.5 |
| 1994 | 30.9°C | 21.8°C | 12.8°C | 39.5°C | 5.5°C | 8 mm | 43% | 3.5 m/s | 8.2 |
| 1993 | 26.0°C | 18.4°C | 10.9°C | 36.1°C | 6.1°C | 55 mm | 56% | 3.9 m/s | 7 |
| 1992 | 26.4°C | 19.8°C | 13.2°C | 35.2°C | 8.5°C | 66 mm | 66% | 3.5 m/s | 6.3 |
| 1991 | 27.2°C | 19.3°C | 11.4°C | 38.4°C | 6.3°C | 12 mm | 53% | 3.6 m/s | 7.4 |
| 1990 | 28.2°C | 20.5°C | 12.8°C | 37.3°C | 7.9°C | 23 mm | 53% | 3.7 m/s | 7.3 |
| 1989 | 29.0°C | 20.6°C | 12.3°C | 37.9°C | 7.3°C | 14 mm | 49% | 3.7 m/s | 7.6 |
| 1988 | 29.0°C | 20.9°C | 12.8°C | 40.0°C | 7.5°C | 16 mm | 52% | 3.5 m/s | 7.4 |
| 1987 | 28.0°C | 19.6°C | 11.2°C | 38.7°C | 5.9°C | 57 mm | 51% | 3.7 m/s | 7.7 |
| 1986 | 24.7°C | 17.6°C | 10.5°C | 39.1°C | 6.8°C | 70 mm | 59% | 4 m/s | 6.7 |
| 1985 | 25.7°C | 18.7°C | 11.7°C | 33.5°C | 8.4°C | 42 mm | 58% | 4.1 m/s | 6.6 |
| 1984 | 27.0°C | 19.2°C | 11.3°C | 36.7°C | 6.5°C | 14 mm | 54% | 4.1 m/s | 7.3 |
| 1983 | 29.6°C | 21.0°C | 12.5°C | 40.7°C | 7.5°C | 54 mm | 50% | 3.3 m/s | — |
| 1982 | 29.3°C | 20.9°C | 12.4°C | 36.3°C | 7.2°C | 7 mm | 45% | 3.6 m/s | — |
| 1981 | 28.2°C | 19.9°C | 11.7°C | 37.9°C | 7.8°C | 10 mm | 50% | 3.6 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 28.2°C with lows near 12.2°C (mean 20.2°C), based on 45 years of NASA POWER data.
December averages 28 mm of rainfall in Bordertown, one of the drier months. The wettest on record was 114 mm in 2010.
The hottest December reached 48.2°C in 2019. The coldest dipped to 5.5°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.5°C. Daytime highs moved from 28°C to 28.6°C and overnight lows from 11.9°C to 12.2°C over the same span.
December is one of the warmer months of the year in Bordertown and one of the drier months, so plan for around 28.2°C daytime highs and 12.2°C at night.
Not quite — December is the 10th coolest month in Bordertown, averaging 20.2°C.
For December in Bordertown, pack light layers you can adjust through the day, with typical highs of 28.2°C and lows of 12.2°C.
Relative humidity in December averages 52% — relatively dry.
Average wind speed in December is 3.6 m/s. The windiest December on record averaged 4.2 m/s (2005).
The wettest December on record was 2010 with 114 mm. On average, December sees 28 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 Bordertown 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.
