December is one of the cooler months of the year in Una, with average highs near 21.6°C and lows around 10.5°C (mean 16.1°C). It is one of the drier months, averaging 13 mm of rainfall and 39% relative humidity across the period.
December is one of the cooler months of the year in Una. Across 45 years of records, the warmest December in Una was 2016 — when the month averaged 17.9°C — while the coldest was 2019 at 13.3°C. Typical December days reach 21.6°C with nights near 10.5°C. The long-term December temperature trend is broadly flat.
December is one of the drier months in Una, averaging 13 mm of rainfall. The wettest December on record was 1989 with 72 mm, while the driest were 2005, 2009 and 2025, among others at 0 mm.
Relative humidity in Una during December averages 39%. The most humid December was 2023 at 55%, and the least humid was 1993 at 19%.
December receives about 3.2 kWh/m²/day of solar energy in Una. The sunniest Decembers were 1998 and 2005 at 3.6 kWh/m²/day, and the cloudiest was 1997 at 2.7.
Average wind speed in Una during December is 1.4 m/s. The windiest December was 1990 at 1.8 m/s, while the calmest was 2025 at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 15.6°C | 16.3°C | 16.7°C | 15.8°C | 15.6°C | 0°C |
| Avg High | 21.3°C | 22.1°C | 22.4°C | 21.2°C | 20.9°C | -0.4°C |
| Avg Low | 10.0°C | 10.5°C | 11.1°C | 10.3°C | 10.4°C | +0.4°C |
| Avg Rain | 20 mm | 6 mm | 9 mm | 19 mm | 13 mm | -7 mm |
December temperatures in Una have stayed relatively stable across the record.
December has ranged from a record low of 2.6°C (2019) to a record high of 29.3°C (1998).
Rainfall in December is one of the drier months, averaging 13 mm, with a wettest year of 72 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.2°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
A good time to visit Una
December is a good time to visit Una, with days averaging 21.6°C and nights around 10.5°C (mean 16.1°C, cooler than Una's yearly average) and low rainfall. March and November are marginally more temperate, but December still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 20.8°C | 15.9°C | 10.9°C | 23.2°C | 8.5°C | 0 mm | 51% | 1.1 m/s | — |
| 2024 | 20.6°C | 15.3°C | 10.0°C | 25.1°C | 7.0°C | 43 mm | 45% | 1.4 m/s | 3.2 |
| 2023 | 20.9°C | 15.9°C | 11.0°C | 24.8°C | 8.3°C | 2 mm | 55% | 1.2 m/s | 3.3 |
| 2022 | 21.6°C | 16.2°C | 10.8°C | 25.4°C | 6.7°C | 4 mm | 53% | 1.4 m/s | 3.4 |
| 2021 | 20.1°C | 14.9°C | 9.8°C | 25.8°C | 4.9°C | 9 mm | 51% | 1.3 m/s | 3.3 |
| 2020 | 21.2°C | 15.6°C | 9.9°C | 26.5°C | 4.2°C | 22 mm | 47% | 1.4 m/s | 3.4 |
| 2019 ❄️ | 18.2°C | 13.3°C | 8.4°C | 23.6°C | 2.6°C | 51 mm | 53% | 1.2 m/s | 2.9 |
| 2018 | 19.5°C | 14.4°C | 9.3°C | 23.2°C | 3.8°C | 7 mm | 49% | 1.2 m/s | 3.5 |
| 2017 | 22.4°C | 16.8°C | 11.1°C | 26.1°C | 8.1°C | 28 mm | 41% | 1.3 m/s | 3.1 |
| 2016 🔥 | 23.7°C | 17.9°C | 12.1°C | 26.3°C | 9.1°C | 2 mm | 32% | 1.3 m/s | 3.4 |
| 2015 | 21.7°C | 16.3°C | 10.8°C | 25.2°C | 5.0°C | 23 mm | 42% | 1.4 m/s | 3.3 |
| 2014 | 20.7°C | 15.3°C | 9.9°C | 26.0°C | 6.2°C | 14 mm | 41% | 1.3 m/s | 3.2 |
| 2013 | 21.3°C | 15.8°C | 10.3°C | 24.9°C | 5.1°C | 5 mm | 43% | 1.4 m/s | 3.4 |
| 2012 | 22.0°C | 16.4°C | 10.7°C | 26.5°C | 7.3°C | 25 mm | 43% | 1.5 m/s | 3.1 |
| 2011 | 21.7°C | 16.1°C | 10.6°C | 25.5°C | 7.7°C | 4 mm | 37% | 1.2 m/s | 3.5 |
| 2010 | 20.6°C | 15.2°C | 9.8°C | 23.3°C | 7.6°C | 29 mm | 45% | 1.3 m/s | 3.4 |
| 2009 | 21.6°C | 16.2°C | 10.9°C | 25.0°C | 7.6°C | 0 mm | 34% | 1.2 m/s | 3.2 |
| 2008 | 23.3°C | 17.8°C | 12.3°C | 26.1°C | 9.4°C | 8 mm | 44% | 1.3 m/s | 3.3 |
| 2007 | 21.4°C | 15.6°C | 9.9°C | 25.4°C | 6.7°C | 3 mm | 36% | 1.5 m/s | 3.3 |
| 2006 | 20.8°C | 15.5°C | 10.3°C | 23.5°C | 7.9°C | 18 mm | 49% | 1.5 m/s | 3.1 |
| 2005 | 22.0°C | 16.0°C | 10.0°C | 24.1°C | 7.6°C | 0 mm | 28% | 1.4 m/s | 3.6 |
| 2004 | 23.1°C | 17.3°C | 11.5°C | 26.8°C | 6.6°C | 15 mm | 37% | 1.5 m/s | 3.2 |
| 2003 | 21.9°C | 16.6°C | 11.3°C | 26.6°C | 6.5°C | 24 mm | 45% | 1.4 m/s | 3 |
| 2002 | 22.6°C | 17.1°C | 11.6°C | 25.9°C | 7.8°C | 7 mm | 37% | 1.4 m/s | 3.2 |
| 2001 | 23.2°C | 17.4°C | 11.5°C | 27.5°C | 7.8°C | 8 mm | 31% | 1.4 m/s | 3.2 |
| 2000 | 24.2°C | 17.8°C | 11.5°C | 26.2°C | 9.1°C | 2 mm | 24% | 1.4 m/s | 3.5 |
| 1999 | 23.8°C | 17.4°C | 11.0°C | 26.9°C | 8.5°C | 0 mm | 19% | 1.4 m/s | 3.5 |
| 1998 | 23.7°C | 17.2°C | 10.8°C | 29.3°C | 7.9°C | 0 mm | 25% | 1.3 m/s | 3.6 |
| 1997 | 18.8°C | 14.0°C | 9.1°C | 23.6°C | 4.3°C | 13 mm | 53% | 1.2 m/s | 2.7 |
| 1996 | 22.0°C | 15.9°C | 9.8°C | 23.5°C | 5.9°C | 1 mm | 31% | 1.4 m/s | 3.4 |
| 1995 | 21.5°C | 15.9°C | 10.3°C | 23.1°C | 8.7°C | 3 mm | 40% | 1.4 m/s | 3 |
| 1994 | 21.3°C | 15.8°C | 10.2°C | 24.6°C | 5.4°C | 16 mm | 38% | 1.6 m/s | 3.1 |
| 1993 | 23.9°C | 17.6°C | 11.2°C | 28.4°C | 8.7°C | 0 mm | 19% | 1.4 m/s | 3.2 |
| 1992 | 22.4°C | 16.7°C | 11.0°C | 24.2°C | 8.2°C | 3 mm | 39% | 1.4 m/s | 3.2 |
| 1991 | 21.8°C | 16.5°C | 11.1°C | 26.6°C | 5.7°C | 23 mm | 40% | 1.4 m/s | 2.9 |
| 1990 | 21.4°C | 15.8°C | 10.2°C | 24.5°C | 3.1°C | 4 mm | 39% | 1.8 m/s | 3 |
| 1989 🌧️ | 21.1°C | 15.6°C | 10.2°C | 25.0°C | 6.8°C | 72 mm | 40% | 1.4 m/s | 3 |
| 1988 | 21.6°C | 16.2°C | 10.9°C | 24.4°C | 7.5°C | 38 mm | 44% | 1.5 m/s | 3.1 |
| 1987 | 23.3°C | 17.0°C | 10.7°C | 26.8°C | 9.2°C | 4 mm | 19% | 1.4 m/s | 3.1 |
| 1986 | 20.1°C | 14.6°C | 9.1°C | 24.3°C | 4.3°C | 16 mm | 39% | 1.5 m/s | 2.9 |
| 1985 | 21.6°C | 16.0°C | 10.3°C | 25.5°C | 5.4°C | 32 mm | 47% | 1.6 m/s | 3 |
| 1984 | 20.6°C | 15.0°C | 9.3°C | 24.4°C | 5.6°C | 7 mm | 37% | 1.5 m/s | 2.9 |
| 1983 | 21.6°C | 15.8°C | 10.0°C | 25.2°C | 5.6°C | 2 mm | 30% | 1.4 m/s | — |
| 1982 | 21.2°C | 15.5°C | 9.9°C | 24.7°C | 5.6°C | 12 mm | 43% | 1.5 m/s | — |
| 1981 | 20.5°C | 15.1°C | 9.7°C | 22.2°C | 7.7°C | 2 mm | 38% | 1.3 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 21.6°C with lows near 10.5°C (mean 16.1°C), based on 45 years of NASA POWER data.
December averages 13 mm of rainfall in Una, one of the drier months. The wettest on record was 72 mm in 1989.
The hottest December reached 29.3°C in 1998. The coldest dipped to 2.6°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.1°C — but days and nights have moved in opposite directions. Overnight lows rose from 9.8°C to 10.5°C while daytime highs eased from 21.1°C to 20.8°C, narrowing the gap between day and night.
December is one of the cooler months of the year in Una and one of the drier months, so plan for around 21.6°C daytime highs and 10.5°C at night.
Not quite — December is the 2nd coolest month in Una, averaging 16.1°C.
For December in Una, pack light layers you can adjust through the day, with typical highs of 21.6°C and lows of 10.5°C.
Relative humidity in December averages 39% — relatively dry.
Average wind speed in December is 1.4 m/s. The windiest December on record averaged 1.8 m/s (1990).
The wettest December on record was 1989 with 72 mm. On average, December sees 13 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 Una 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.
