December is one of the cooler months of the year in Sanchor, with average highs near 28.6°C and lows around 12.4°C (mean 20.5°C). It is one of the drier months, averaging 1 mm of rainfall and 30% relative humidity across the period.
December is one of the cooler months of the year in Sanchor. Across 45 years of records, the warmest December in Sanchor was 2016 — when the month averaged 22.6°C — while the coldest was 1986 at 18.1°C. Typical December days reach 28.6°C with nights near 12.4°C. The long-term December temperature trend is broadly flat.
December is one of the drier months in Sanchor, averaging 1 mm of rainfall. The wettest December on record was 2008 with 11 mm, while the driest were 2018, 2020 and 2022, among others at 0 mm.
Relative humidity in Sanchor during December averages 30%. The most humid December was 2019 at 51%, and the least humid was 1999 at 16%.
December receives about 4.3 kWh/m²/day of solar energy in Sanchor. The sunniest December was 1984 at 4.7 kWh/m²/day, and the cloudiest were 2017 and 2021 at 3.8.
Average wind speed in Sanchor during December is 2 m/s. The windiest December was 1997 at 2.8 m/s, while the calmest was 2025 at 1.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 20.3°C | 21.1°C | 20.9°C | 20.0°C | 20.3°C | 0°C |
| Avg High | 28.6°C | 29.4°C | 28.9°C | 28.0°C | 28.0°C | -0.6°C |
| Avg Low | 12.0°C | 12.8°C | 12.8°C | 11.9°C | 12.6°C | +0.6°C |
| Avg Rain | 1 mm | 0 mm | 3 mm | 1 mm | 2 mm | +1 mm |
December temperatures in Sanchor have stayed relatively stable across the record.
December has ranged from a record low of 3.2°C (1986) to a record high of 34.6°C (2008).
Rainfall in December is one of the drier months, averaging 1 mm, with a wettest year of 11 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.3°C per decade while lows rose 0°C per decade, narrowing the gap between day and night.
One of the best times to visit Sanchor
December is one of the best times to visit Sanchor. Expect days averaging 28.6°C and nights around 12.4°C (mean 20.5°C) — cooler than Sanchor's yearly average — with low rainfall (1 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 | 29.1°C | 21.5°C | 13.8°C | 31.9°C | 10.6°C | 3 mm | 40% | 1.3 m/s | — |
| 2024 | 27.2°C | 19.0°C | 10.8°C | 31.3°C | 7.6°C | 1 mm | 38% | 1.9 m/s | 3.9 |
| 2023 | 28.0°C | 20.7°C | 13.4°C | 29.9°C | 11.2°C | 2 mm | 43% | 1.7 m/s | 3.9 |
| 2022 | 28.8°C | 20.8°C | 12.8°C | 31.9°C | 8.2°C | 0 mm | 35% | 1.7 m/s | 4.2 |
| 2021 | 27.0°C | 19.9°C | 12.7°C | 29.7°C | 6.5°C | 5 mm | 41% | 1.7 m/s | 3.8 |
| 2020 | 27.7°C | 20.0°C | 12.2°C | 32.4°C | 5.5°C | 0 mm | 39% | 1.8 m/s | 4.1 |
| 2019 | 25.7°C | 18.3°C | 10.8°C | 29.4°C | 6.1°C | 2 mm | 51% | 2.2 m/s | 3.9 |
| 2018 | 27.6°C | 19.3°C | 11.0°C | 30.6°C | 7.2°C | 0 mm | 25% | 1.9 m/s | 4.2 |
| 2017 | 28.4°C | 20.6°C | 12.8°C | 31.1°C | 8.4°C | 6 mm | 34% | 2.1 m/s | 3.8 |
| 2016 🔥 | 30.7°C | 22.6°C | 14.5°C | 33.0°C | 10.2°C | 0 mm | 30% | 1.5 m/s | 4.4 |
| 2015 | 28.5°C | 20.1°C | 11.6°C | 32.4°C | 6.8°C | 0 mm | 23% | 1.9 m/s | 4.4 |
| 2014 | 27.9°C | 19.7°C | 11.6°C | 32.3°C | 7.3°C | 1 mm | 26% | 1.9 m/s | 4.2 |
| 2013 | 27.6°C | 19.7°C | 11.9°C | 31.6°C | 4.7°C | 0 mm | 32% | 1.8 m/s | 4.3 |
| 2012 | 28.2°C | 20.3°C | 12.3°C | 31.5°C | 7.6°C | 0 mm | 36% | 2.4 m/s | 4.2 |
| 2011 | 28.4°C | 20.3°C | 12.2°C | 32.8°C | 7.6°C | 0 mm | 32% | 1.9 m/s | 4.3 |
| 2010 | 26.5°C | 18.6°C | 10.6°C | 29.0°C | 7.8°C | 2 mm | 45% | 1.8 m/s | 4.3 |
| 2009 | 28.6°C | 20.8°C | 13.0°C | 32.1°C | 9.8°C | 0 mm | 31% | 2 m/s | 4 |
| 2008 🌧️ | 29.7°C | 22.4°C | 15.1°C | 34.6°C | 9.1°C | 11 mm | 36% | 2.1 m/s | 4 |
| 2007 | 27.8°C | 19.6°C | 11.4°C | 30.6°C | 5.9°C | 5 mm | 29% | 2.3 m/s | 4.1 |
| 2006 | 27.1°C | 19.5°C | 11.9°C | 30.0°C | 8.7°C | 1 mm | 42% | 2 m/s | 4.2 |
| 2005 | 28.5°C | 19.7°C | 10.9°C | 31.6°C | 6.5°C | 0 mm | 21% | 2.1 m/s | 4.3 |
| 2004 | 29.2°C | 21.6°C | 14.0°C | 33.3°C | 9.5°C | 0 mm | 28% | 1.9 m/s | 3.9 |
| 2003 | 27.8°C | 19.6°C | 11.5°C | 33.1°C | 6.6°C | 4 mm | 30% | 2.1 m/s | 4.3 |
| 2002 | 29.4°C | 21.6°C | 13.8°C | 33.3°C | 10.1°C | 5 mm | 26% | 1.8 m/s | 4.1 |
| 2001 | 30.3°C | 21.9°C | 13.5°C | 33.6°C | 9.6°C | 4 mm | 21% | 1.8 m/s | 4.3 |
| 2000 | 30.8°C | 22.0°C | 13.2°C | 33.8°C | 10.4°C | 0 mm | 19% | 1.8 m/s | 4.4 |
| 1999 | 30.0°C | 21.4°C | 12.7°C | 33.6°C | 10.2°C | 0 mm | 16% | 2 m/s | 4.4 |
| 1998 | 30.9°C | 22.2°C | 13.6°C | 33.6°C | 10.4°C | 0 mm | 20% | 1.8 m/s | 4.1 |
| 1997 | 26.3°C | 18.6°C | 10.9°C | 28.6°C | 6.4°C | 0 mm | 40% | 2.8 m/s | 4.5 |
| 1996 | 29.3°C | 20.4°C | 11.5°C | 30.9°C | 8.0°C | 0 mm | 19% | 2.1 m/s | 4.5 |
| 1995 | 29.1°C | 21.4°C | 13.6°C | 31.4°C | 9.2°C | 1 mm | 31% | 2.3 m/s | 4.4 |
| 1994 | 28.4°C | 20.3°C | 12.1°C | 32.7°C | 4.3°C | 0 mm | 27% | 1.8 m/s | 4.6 |
| 1993 | 30.6°C | 21.7°C | 12.9°C | 33.8°C | 9.5°C | 0 mm | 17% | 1.9 m/s | 4.6 |
| 1992 | 30.4°C | 22.3°C | 14.1°C | 32.0°C | 10.6°C | 0 mm | 28% | 1.7 m/s | 4.5 |
| 1991 | 29.7°C | 21.7°C | 13.6°C | 33.5°C | 8.7°C | 0 mm | 24% | 1.7 m/s | 4.5 |
| 1990 | 28.9°C | 21.1°C | 13.2°C | 33.5°C | 3.8°C | 0 mm | 27% | 2.1 m/s | 4.2 |
| 1989 | 28.5°C | 20.4°C | 12.4°C | 32.4°C | 7.7°C | 0 mm | 27% | 2.1 m/s | 4.5 |
| 1988 | 30.1°C | 22.0°C | 14.0°C | 33.5°C | 9.0°C | 0 mm | 24% | 1.7 m/s | 4.5 |
| 1987 | 29.8°C | 21.1°C | 12.4°C | 32.1°C | 10.1°C | 3 mm | 21% | 1.9 m/s | 4.3 |
| 1986 ❄️ | 26.9°C | 18.1°C | 9.2°C | 33.6°C | 3.2°C | 5 mm | 20% | 2.5 m/s | 4.5 |
| 1985 | 28.6°C | 20.5°C | 12.4°C | 31.6°C | 6.3°C | 0 mm | 27% | 2.1 m/s | 4.4 |
| 1984 | 28.9°C | 20.5°C | 12.1°C | 33.2°C | 6.4°C | 0 mm | 20% | 2.2 m/s | 4.7 |
| 1983 | 27.3°C | 18.9°C | 10.4°C | 31.1°C | 3.7°C | 0 mm | 27% | 2.2 m/s | — |
| 1982 | 28.8°C | 20.7°C | 12.5°C | 31.3°C | 9.1°C | 0 mm | 31% | 2.2 m/s | — |
| 1981 | 28.3°C | 20.3°C | 12.3°C | 29.6°C | 10.3°C | 0 mm | 38% | 2 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 28.6°C with lows near 12.4°C (mean 20.5°C), based on 45 years of NASA POWER data.
December averages 1 mm of rainfall in Sanchor, one of the drier months. The wettest on record was 11 mm in 2008.
The hottest December reached 34.6°C in 2008. The coldest dipped to 3.2°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.2°C — but days and nights have moved in opposite directions. Overnight lows rose from 11.9°C to 12.7°C while daytime highs eased from 28.4°C to 28°C, narrowing the gap between day and night.
December is one of the cooler months of the year in Sanchor and one of the drier months, so plan for around 28.6°C daytime highs and 12.4°C at night.
Not quite — December is the 2nd coolest month in Sanchor, averaging 20.5°C.
For December in Sanchor, pack light layers you can adjust through the day, with typical highs of 28.6°C and lows of 12.4°C.
Relative humidity in December averages 30% — relatively dry.
Average wind speed in December is 2 m/s. The windiest December on record averaged 2.8 m/s (1997).
The wettest December on record was 2008 with 11 mm. On average, December sees 1 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 Sanchor 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.
