December is one of the warmer months of the year in Central Coast, with average highs near 26.8°C and lows around 17.3°C (mean 22.1°C). It is about average for rainfall, averaging 80 mm of rainfall and 68% relative humidity across the period.
December is one of the warmer months of the year in Central Coast. Across 45 years of records, the warmest December in Central Coast was 1990 — when the month averaged 24.9°C — while the coldest was 2011 at 18.7°C. Typical December days reach 26.8°C with nights near 17.3°C. The long-term trend is warming, about 0.3°C per decade.
December is about average for rainfall in Central Coast, averaging 80 mm of rainfall. The wettest December on record was 1991 with 202 mm, while the driest was 2019 at 2 mm.
Relative humidity in Central Coast during December averages 68%. The most humid December was 1992 at 80%, and the least humid was 2019 at 59%.
December receives about 6.6 kWh/m²/day of solar energy in Central Coast. The sunniest December was 2005 at 7.8 kWh/m²/day, and the cloudiest was 2020 at 5.7.
Average wind speed in Central Coast during December is 1.3 m/s. The windiest Decembers were 2002 and 2011 at 1.5 m/s, while the calmest were 2016, 2017 and 2018, among others at 1.2 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.6°C | 21.7°C | 22.3°C | 22.4°C | 22.3°C | +0.7°C |
| Avg High | 26.5°C | 26.4°C | 27.2°C | 27.2°C | 27.0°C | +0.5°C |
| Avg Low | 16.8°C | 17.0°C | 17.5°C | 17.6°C | 17.7°C | +0.9°C |
| Avg Rain | 83 mm | 89 mm | 72 mm | 79 mm | 76 mm | -7 mm |
December temperatures in Central Coast have risen by about 0.5°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 10.7°C (2006) to a record high of 40.1°C (2019).
Rainfall in December is about average for rainfall, averaging 80 mm, with a wettest year of 202 mm.
One of the best times to visit Central Coast
December is one of the best times to visit Central Coast. Expect days averaging 26.8°C and nights around 17.3°C (mean 22.1°C) — warmer than Central Coast's yearly average — with moderate rainfall (80 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 | 28.5°C | 23.1°C | 17.7°C | 39.6°C | 13.3°C | 57 mm | 61% | 1.3 m/s | — |
| 2024 | 29.1°C | 24.0°C | 18.9°C | 36.9°C | 15.1°C | 42 mm | 68% | 1.3 m/s | 7.3 |
| 2023 | 28.7°C | 23.7°C | 18.8°C | 39.5°C | 16.3°C | 89 mm | 72% | 1.3 m/s | 6.7 |
| 2022 | 24.8°C | 20.1°C | 15.5°C | 31.5°C | 12.2°C | 35 mm | 66% | 1.4 m/s | 7.1 |
| 2021 | 25.1°C | 21.2°C | 17.3°C | 33.6°C | 13.4°C | 89 mm | 77% | 1.4 m/s | 6.5 |
| 2020 | 25.9°C | 21.8°C | 17.7°C | 34.5°C | 15.4°C | 143 mm | 72% | 1.4 m/s | 5.7 |
| 2019 | 29.3°C | 23.4°C | 17.6°C | 40.1°C | 13.3°C | 2 mm | 59% | 1.3 m/s | 7 |
| 2018 | 27.9°C | 23.0°C | 18.0°C | 36.2°C | 14.9°C | 114 mm | 73% | 1.2 m/s | 7.1 |
| 2017 | 29.0°C | 23.9°C | 18.8°C | 38.0°C | 16.2°C | 65 mm | 69% | 1.2 m/s | 6.5 |
| 2016 | 29.2°C | 24.0°C | 18.7°C | 37.1°C | 15.5°C | 74 mm | 66% | 1.2 m/s | 6.7 |
| 2015 | 27.0°C | 22.2°C | 17.5°C | 35.8°C | 14.0°C | 97 mm | 66% | 1.3 m/s | 6.8 |
| 2014 | 26.7°C | 22.4°C | 18.1°C | 34.5°C | 15.5°C | 148 mm | 72% | 1.3 m/s | 6.5 |
| 2013 | 27.5°C | 22.3°C | 17.1°C | 37.4°C | 12.0°C | 36 mm | 64% | 1.3 m/s | 7.3 |
| 2012 | 27.4°C | 22.3°C | 17.2°C | 36.1°C | 14.0°C | 54 mm | 67% | 1.4 m/s | 6.1 |
| 2011 ❄️ | 22.1°C | 18.7°C | 15.4°C | 29.4°C | 11.7°C | 98 mm | 76% | 1.5 m/s | 5.9 |
| 2010 | 25.9°C | 21.7°C | 17.5°C | 31.2°C | 12.4°C | 100 mm | 73% | 1.3 m/s | 6.3 |
| 2009 | 27.5°C | 22.8°C | 18.0°C | 37.5°C | 13.3°C | 74 mm | 68% | 1.4 m/s | 6.3 |
| 2008 | 26.9°C | 21.9°C | 16.9°C | 33.1°C | 13.7°C | 87 mm | 66% | 1.3 m/s | 6.6 |
| 2007 | 24.7°C | 21.0°C | 17.4°C | 29.3°C | 14.5°C | 127 mm | 77% | 1.4 m/s | 6.1 |
| 2006 | 26.3°C | 21.5°C | 16.6°C | 36.7°C | 10.7°C | 69 mm | 67% | 1.4 m/s | 6.3 |
| 2005 | 29.6°C | 23.7°C | 17.9°C | 36.7°C | 13.0°C | 32 mm | 61% | 1.2 m/s | 7.8 |
| 2004 | 25.9°C | 21.4°C | 16.9°C | 37.8°C | 12.6°C | 92 mm | 70% | 1.4 m/s | 6.7 |
| 2003 | 27.4°C | 22.7°C | 18.0°C | 36.7°C | 15.7°C | 62 mm | 70% | 1.4 m/s | 6.2 |
| 2002 | 26.9°C | 22.0°C | 17.1°C | 38.0°C | 13.4°C | 82 mm | 65% | 1.5 m/s | 6.8 |
| 2001 | 28.1°C | 22.8°C | 17.4°C | 36.3°C | 14.6°C | 38 mm | 63% | 1.3 m/s | 6.5 |
| 2000 | 28.2°C | 23.3°C | 18.4°C | 36.9°C | 12.9°C | 58 mm | 65% | 1.2 m/s | 7.1 |
| 1999 | 24.7°C | 20.5°C | 16.4°C | 31.7°C | 13.3°C | 81 mm | 71% | 1.4 m/s | 6.3 |
| 1998 | 27.1°C | 22.5°C | 18.0°C | 33.6°C | 14.5°C | 49 mm | 70% | 1.4 m/s | 6.8 |
| 1997 | 29.6°C | 24.3°C | 18.9°C | 36.8°C | 16.4°C | 41 mm | 63% | 1.3 m/s | 6.5 |
| 1996 | 26.1°C | 21.1°C | 16.0°C | 33.0°C | 12.8°C | 66 mm | 67% | 1.4 m/s | 6.4 |
| 1995 | 24.2°C | 19.8°C | 15.5°C | 30.6°C | 10.8°C | 89 mm | 71% | 1.4 m/s | 6.4 |
| 1994 | 26.4°C | 21.6°C | 16.8°C | 39.5°C | 12.7°C | 72 mm | 69% | 1.4 m/s | 6.6 |
| 1993 | 26.6°C | 21.6°C | 16.7°C | 36.4°C | 13.7°C | 47 mm | 66% | 1.4 m/s | 6.6 |
| 1992 | 23.6°C | 20.2°C | 16.7°C | 29.4°C | 12.2°C | 191 mm | 80% | 1.3 m/s | 6.1 |
| 1991 🌧️ | 24.4°C | 20.1°C | 15.9°C | 30.4°C | 13.0°C | 202 mm | 73% | 1.3 m/s | 6.4 |
| 1990 🔥 | 31.0°C | 24.9°C | 18.8°C | 39.2°C | 14.0°C | 48 mm | 63% | 1.2 m/s | 7.3 |
| 1989 | 25.9°C | 21.1°C | 16.4°C | 33.8°C | 12.6°C | 110 mm | 68% | 1.3 m/s | 6.9 |
| 1988 | 25.7°C | 21.6°C | 17.6°C | 33.5°C | 13.5°C | 135 mm | 76% | 1.4 m/s | 6.1 |
| 1987 | 26.2°C | 21.5°C | 16.8°C | 36.7°C | 11.9°C | 89 mm | 67% | 1.4 m/s | 6.4 |
| 1986 | 25.8°C | 20.8°C | 15.9°C | 33.9°C | 12.5°C | 26 mm | 63% | 1.4 m/s | 7.5 |
| 1985 | 27.6°C | 22.6°C | 17.5°C | 35.5°C | 13.8°C | 75 mm | 65% | 1.2 m/s | 6.7 |
| 1984 | 26.5°C | 21.3°C | 16.1°C | 35.5°C | 12.0°C | 76 mm | 61% | 1.4 m/s | 7 |
| 1983 | 25.8°C | 21.0°C | 16.2°C | 37.6°C | 12.7°C | 119 mm | 70% | 1.3 m/s | — |
| 1982 | 27.8°C | 22.5°C | 17.2°C | 37.0°C | 14.5°C | 31 mm | 63% | 1.3 m/s | — |
| 1981 | 27.2°C | 22.2°C | 17.1°C | 35.4°C | 14.4°C | 88 mm | 67% | 1.3 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 26.8°C with lows near 17.3°C (mean 22.1°C), based on 45 years of NASA POWER data.
December averages 80 mm of rainfall in Central Coast, about average for rainfall. The wettest on record was 202 mm in 1991.
The hottest December reached 40.1°C in 2019. The coldest dipped to 10.7°C in 2006.
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 27°C to 27.2°C and overnight lows from 16.8°C to 17.6°C over the same span.
December is one of the warmer months of the year in Central Coast and about average for rainfall, so plan for around 26.8°C daytime highs and 17.3°C at night.
Not quite — December is the 10th coolest month in Central Coast, averaging 22.1°C.
For December in Central Coast, pack light layers you can adjust through the day, with typical highs of 26.8°C and lows of 17.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 68% — moderately humid.
Average wind speed in December is 1.3 m/s. The windiest December on record averaged 1.5 m/s (2002).
The wettest December on record was 1991 with 202 mm. On average, December sees 80 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 Central Coast 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.
