December is one of the warmer months of the year in Theodore, with average highs near 34°C and lows around 19.3°C (mean 26.7°C). It is a relatively wet time of year, averaging 96 mm of rainfall and 59% relative humidity across the period.
December is one of the warmer months of the year in Theodore. Across 45 years of records, the warmest December in Theodore was 2019 — when the month averaged 29.2°C — while the coldest was 2010 at 23.7°C. Typical December days reach 34°C with nights near 19.3°C. The long-term December temperature trend is broadly flat.
December is a relatively wet time of year in Theodore, averaging 96 mm of rainfall. The wettest December on record was 2010 with 429 mm, while the driest was 2019 at 25 mm.
Relative humidity in Theodore during December averages 59%. The most humid December was 2010 at 81%, and the least humid was 2019 at 43%.
December receives about 7.2 kWh/m²/day of solar energy in Theodore. The sunniest December was 2013 at 8.3 kWh/m²/day, and the cloudiest was 2010 at 5.4.
Average wind speed in Theodore during December is 2.7 m/s. The windiest December was 1988 at 3.3 m/s, while the calmest was 2021 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 26.8°C | 26.4°C | 26.8°C | 26.3°C | 27.0°C | +0.2°C |
| Avg High | 34.3°C | 33.8°C | 34.1°C | 33.5°C | 34.1°C | -0.2°C |
| Avg Low | 19.2°C | 19.0°C | 19.5°C | 19.2°C | 19.9°C | +0.7°C |
| Avg Rain | 89 mm | 93 mm | 92 mm | 120 mm | 82 mm | -7 mm |
December temperatures in Theodore have stayed relatively stable across the record.
December has ranged from a record low of 10.8°C (2010) to a record high of 43°C (1996).
Rainfall in December is a relatively wet time of year, averaging 96 mm, with a wettest year of 429 mm.
A good time to visit Theodore
December is a good time to visit Theodore, with days averaging 34°C and nights around 19.3°C (mean 26.7°C, warmer than Theodore's yearly average) and higher rainfall. April and October 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 | 35.3°C | 27.7°C | 20.1°C | 39.8°C | 13.1°C | 38 mm | 52% | 2.6 m/s | — |
| 2024 | 35.9°C | 28.6°C | 21.3°C | 40.1°C | 17.4°C | 65 mm | 57% | 2.8 m/s | 7.1 |
| 2023 | 35.8°C | 28.7°C | 21.6°C | 38.8°C | 19.0°C | 146 mm | 60% | 2.8 m/s | 7.2 |
| 2022 | 31.4°C | 24.2°C | 17.1°C | 38.5°C | 12.7°C | 91 mm | 61% | 2.5 m/s | 7.3 |
| 2021 | 31.1°C | 25.0°C | 19.0°C | 35.6°C | 14.6°C | 75 mm | 70% | 2.1 m/s | 7.3 |
| 2020 | 35.3°C | 27.9°C | 20.5°C | 42.1°C | 16.0°C | 77 mm | 56% | 3 m/s | 6.8 |
| 2019 🔥 | 38.0°C | 29.2°C | 20.5°C | 41.5°C | 17.4°C | 25 mm | 43% | 2.8 m/s | 8.2 |
| 2018 | 33.8°C | 26.4°C | 18.9°C | 39.7°C | 15.1°C | 115 mm | 62% | 3 m/s | 6.9 |
| 2017 | 33.9°C | 26.4°C | 18.9°C | 39.4°C | 12.4°C | 66 mm | 61% | 2.5 m/s | 7.7 |
| 2016 | 35.5°C | 27.9°C | 20.2°C | 42.2°C | 16.6°C | 72 mm | 55% | 2.8 m/s | 7.1 |
| 2015 | 33.0°C | 25.8°C | 18.6°C | 37.8°C | 15.8°C | 27 mm | 60% | 2.5 m/s | 7.4 |
| 2014 | 31.4°C | 25.6°C | 19.9°C | 37.4°C | 15.2°C | 228 mm | 70% | 2.4 m/s | 7 |
| 2013 | 33.6°C | 25.6°C | 17.6°C | 41.3°C | 13.5°C | 68 mm | 58% | 2.5 m/s | 8.3 |
| 2012 | 35.3°C | 27.5°C | 19.7°C | 41.8°C | 14.5°C | 54 mm | 51% | 2.8 m/s | 7.3 |
| 2011 | 32.1°C | 25.3°C | 18.6°C | 36.5°C | 16.3°C | 112 mm | 62% | 2.7 m/s | 6.2 |
| 2010 ❄️ 🌧️ | 28.5°C | 23.7°C | 19.0°C | 31.8°C | 10.8°C | 429 mm | 81% | 2.8 m/s | 5.4 |
| 2009 | 34.5°C | 27.4°C | 20.3°C | 39.8°C | 17.0°C | 100 mm | 59% | 2.5 m/s | 6.8 |
| 2008 | 35.1°C | 27.5°C | 20.0°C | 40.2°C | 14.8°C | 74 mm | 58% | 2.7 m/s | 7.5 |
| 2007 | 31.9°C | 25.5°C | 19.1°C | 36.6°C | 14.7°C | 99 mm | 67% | 2.8 m/s | 5.9 |
| 2006 | 33.6°C | 26.0°C | 18.4°C | 38.1°C | 14.9°C | 62 mm | 55% | 3.1 m/s | 6.8 |
| 2005 | 35.9°C | 28.1°C | 20.3°C | 40.1°C | 14.8°C | 102 mm | 57% | 2.7 m/s | 8 |
| 2004 | 33.1°C | 26.3°C | 19.5°C | 38.2°C | 11.7°C | 119 mm | 62% | 2.5 m/s | 7.1 |
| 2003 | 33.4°C | 26.5°C | 19.7°C | 38.7°C | 15.8°C | 117 mm | 64% | 2.7 m/s | 7.1 |
| 2002 | 34.6°C | 26.7°C | 18.9°C | 40.2°C | 13.8°C | 74 mm | 51% | 2.9 m/s | 7.7 |
| 2001 | 35.7°C | 28.0°C | 20.3°C | 41.7°C | 16.8°C | 97 mm | 57% | 2.7 m/s | 7.2 |
| 2000 | 33.4°C | 26.1°C | 18.7°C | 39.3°C | 15.8°C | 70 mm | 59% | 2.5 m/s | 6.9 |
| 1999 | 32.4°C | 24.8°C | 17.1°C | 37.8°C | 14.2°C | 39 mm | 57% | 3.1 m/s | 6.9 |
| 1998 | 34.2°C | 26.9°C | 19.6°C | 39.5°C | 14.1°C | 92 mm | 59% | 2.5 m/s | 7.1 |
| 1997 | 34.7°C | 28.0°C | 21.3°C | 40.5°C | 16.9°C | 67 mm | 62% | 2.5 m/s | 6.7 |
| 1996 | 33.5°C | 26.3°C | 19.1°C | 43.0°C | 14.4°C | 112 mm | 61% | 2.6 m/s | 7.1 |
| 1995 | 33.6°C | 25.8°C | 18.1°C | 38.9°C | 11.5°C | 114 mm | 59% | 2.8 m/s | 7.3 |
| 1994 | 34.5°C | 26.4°C | 18.4°C | 40.5°C | 14.7°C | 67 mm | 53% | 2.7 m/s | 7.7 |
| 1993 | 34.5°C | 26.3°C | 18.2°C | 38.7°C | 13.6°C | 46 mm | 52% | 2.9 m/s | 7.3 |
| 1992 | 33.8°C | 26.5°C | 19.1°C | 38.7°C | 13.4°C | 78 mm | 54% | 2.9 m/s | 6.9 |
| 1991 | 32.4°C | 25.6°C | 18.8°C | 37.8°C | 15.4°C | 161 mm | 64% | 2.7 m/s | 7.6 |
| 1990 | 34.5°C | 27.5°C | 20.4°C | 41.3°C | 16.2°C | 150 mm | 60% | 2.9 m/s | 6.9 |
| 1989 | 34.2°C | 26.5°C | 18.7°C | 38.1°C | 14.5°C | 43 mm | 54% | 2.6 m/s | 7.6 |
| 1988 | 32.8°C | 26.1°C | 19.4°C | 37.5°C | 15.9°C | 163 mm | 65% | 3.3 m/s | 6.7 |
| 1987 | 35.0°C | 27.2°C | 19.3°C | 38.9°C | 13.3°C | 51 mm | 53% | 2.8 m/s | 7.5 |
| 1986 | 33.7°C | 25.9°C | 18.2°C | 41.5°C | 12.0°C | 30 mm | 59% | 2.7 m/s | 7.6 |
| 1985 | 34.9°C | 27.5°C | 20.0°C | 40.3°C | 15.6°C | 102 mm | 59% | 2.7 m/s | 7.6 |
| 1984 | 34.1°C | 27.0°C | 20.0°C | 40.5°C | 15.0°C | 161 mm | 61% | 2.5 m/s | 7.1 |
| 1983 | 32.5°C | 24.7°C | 16.8°C | 37.6°C | 11.8°C | 64 mm | 59% | 2.7 m/s | — |
| 1982 | 35.0°C | 27.1°C | 19.2°C | 38.8°C | 15.5°C | 104 mm | 56% | 2.7 m/s | — |
| 1981 | 36.4°C | 28.8°C | 21.2°C | 41.4°C | 17.9°C | 84 mm | 56% | 2.5 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 34°C with lows near 19.3°C (mean 26.7°C), based on 45 years of NASA POWER data.
December averages 96 mm of rainfall in Theodore, a relatively wet time of year. The wettest on record was 429 mm in 2010.
The hottest December reached 43°C in 1996. The coldest dipped to 10.8°C in 2010.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have fallen by about 0.2°C — but days and nights have moved in opposite directions. Overnight lows rose from 19.4°C to 19.8°C while daytime highs eased from 34.6°C to 33.9°C, narrowing the gap between day and night.
December is one of the warmer months of the year in Theodore and a relatively wet time of year, so plan for around 34°C daytime highs and 19.3°C at night.
Not quite — December is the 10th coolest month in Theodore, averaging 26.7°C.
For December in Theodore, pack light, breathable clothing and sun protection, with typical highs of 34°C and lows of 19.3°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 59% — moderately humid.
Average wind speed in December is 2.7 m/s. The windiest December on record averaged 3.3 m/s (1988).
The wettest December on record was 2010 with 429 mm. On average, December sees 96 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 Theodore 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.
