December is close to Agat's year-round average, with average highs near 28.4°C and lows around 27.7°C (mean 28.1°C). It is one of the drier months, averaging 84 mm of rainfall and 79% relative humidity across the period.
December is close to Agat's year-round average. Across 45 years of records, the warmest December in Agat was 2024 — when the month averaged 28.8°C — while the coldest were 1991 and 1992 at 26.9°C. Typical December days reach 28.4°C with nights near 27.7°C. The long-term trend is warming, about 0.3°C per decade.
December is one of the drier months in Agat, averaging 84 mm of rainfall. The wettest December on record was 2022 with 186 mm, while the driest was 1992 at 22 mm.
Relative humidity in Agat during December averages 79%. The most humid Decembers were 1986 and 1989 at 82%, and the least humid was 1999 at 74%.
December receives about 4.8 kWh/m²/day of solar energy in Agat. The sunniest December was 2010 at 5.2 kWh/m²/day, and the cloudiest was 1986 at 4.2.
Average wind speed in Agat during December is 6.5 m/s. The windiest December was 1992 at 7.5 m/s, while the calmest was 2010 at 4.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.8°C | 27.6°C | 28.1°C | 28.3°C | 28.6°C | +0.8°C |
| Avg High | 28.1°C | 27.9°C | 28.5°C | 28.7°C | 29.0°C | +0.9°C |
| Avg Low | 27.4°C | 27.3°C | 27.8°C | 28.0°C | 28.3°C | +0.9°C |
| Avg Rain | 110 mm | 86 mm | 84 mm | 59 mm | 85 mm | -24 mm |
December temperatures in Agat have risen by about 0.9°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 25.6°C (1992) to a record high of 29.9°C (2022).
Rainfall in December is one of the drier months, averaging 84 mm, with a wettest year of 186 mm.
A good time to visit Agat
December is a good time to visit Agat, with days averaging 28.4°C and nights around 27.7°C (mean 28.1°C, close to Agat's yearly average) and higher rainfall. March and February 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 | 28.9°C | 28.6°C | 28.2°C | 29.4°C | 27.5°C | 75 mm | 80% | 5.7 m/s | — |
| 2024 🔥 | 29.2°C | 28.8°C | 28.5°C | 29.6°C | 28.0°C | 62 mm | 80% | 6.1 m/s | 4.8 |
| 2023 | 29.0°C | 28.7°C | 28.3°C | 29.3°C | 27.6°C | 58 mm | 79% | 6.9 m/s | 5 |
| 2022 🌧️ | 29.0°C | 28.7°C | 28.4°C | 29.9°C | 27.6°C | 186 mm | 80% | 6 m/s | 4.6 |
| 2021 | 28.8°C | 28.4°C | 28.0°C | 29.3°C | 27.3°C | 69 mm | 79% | 5.8 m/s | 4.9 |
| 2020 | 28.8°C | 28.5°C | 28.1°C | 29.5°C | 27.1°C | 61 mm | 78% | 6.6 m/s | 5 |
| 2019 | 28.5°C | 28.1°C | 27.8°C | 29.0°C | 27.1°C | 39 mm | 76% | 6.7 m/s | 5.1 |
| 2018 | 28.7°C | 28.4°C | 28.1°C | 29.1°C | 27.3°C | 107 mm | 82% | 7 m/s | 4.6 |
| 2017 | 29.0°C | 28.7°C | 28.3°C | 29.5°C | 27.2°C | 71 mm | 80% | 5.8 m/s | 4.8 |
| 2016 | 28.7°C | 28.4°C | 28.1°C | 29.4°C | 27.5°C | 66 mm | 79% | 6.9 m/s | 4.8 |
| 2015 | 28.2°C | 27.9°C | 27.6°C | 28.8°C | 26.7°C | 35 mm | 80% | 6.5 m/s | 5 |
| 2014 | 29.0°C | 28.6°C | 28.2°C | 29.3°C | 27.7°C | 64 mm | 79% | 6.4 m/s | 4.9 |
| 2013 | 28.7°C | 28.3°C | 27.9°C | 29.3°C | 26.9°C | 54 mm | 78% | 5.9 m/s | 4.7 |
| 2012 | 28.9°C | 28.5°C | 28.1°C | 29.3°C | 27.5°C | 59 mm | 78% | 6.7 m/s | 5 |
| 2011 | 28.5°C | 28.2°C | 27.9°C | 29.0°C | 27.5°C | 57 mm | 80% | 7 m/s | 4.7 |
| 2010 | 28.6°C | 28.2°C | 27.8°C | 29.4°C | 27.1°C | 36 mm | 78% | 4.8 m/s | 5.2 |
| 2009 | 28.2°C | 27.8°C | 27.5°C | 28.9°C | 26.5°C | 161 mm | 81% | 5.3 m/s | 4.5 |
| 2008 | 28.7°C | 28.3°C | 27.9°C | 29.2°C | 27.2°C | 66 mm | 78% | 6.3 m/s | 5 |
| 2007 | 28.7°C | 28.4°C | 28.0°C | 29.4°C | 27.2°C | 41 mm | 77% | 6.7 m/s | 5 |
| 2006 | 28.4°C | 28.1°C | 27.8°C | 28.9°C | 27.0°C | 69 mm | 81% | 6.8 m/s | 4.7 |
| 2005 | 28.7°C | 28.4°C | 28.1°C | 29.4°C | 27.5°C | 62 mm | 78% | 6.2 m/s | 5 |
| 2004 | 28.4°C | 28.0°C | 27.7°C | 29.3°C | 27.0°C | 78 mm | 79% | 6.4 m/s | 4.7 |
| 2003 | 28.5°C | 28.2°C | 27.9°C | 29.6°C | 26.9°C | 102 mm | 80% | 5.9 m/s | 4.6 |
| 2002 | 28.2°C | 27.8°C | 27.4°C | 28.8°C | 26.7°C | 104 mm | 80% | 6.9 m/s | 4.7 |
| 2001 | 28.2°C | 27.8°C | 27.5°C | 29.2°C | 26.8°C | 74 mm | 78% | 7.2 m/s | 4.6 |
| 2000 | 28.6°C | 28.3°C | 27.9°C | 29.2°C | 27.1°C | 87 mm | 80% | 6.9 m/s | 4.7 |
| 1999 | 28.6°C | 28.3°C | 27.9°C | 29.6°C | 27.1°C | 48 mm | 74% | 7.1 m/s | 5 |
| 1998 | 28.6°C | 28.2°C | 27.9°C | 29.0°C | 26.4°C | 48 mm | 76% | 6.7 m/s | 4.9 |
| 1997 | 28.0°C | 27.6°C | 27.3°C | 28.6°C | 26.3°C | 172 mm | 79% | 6.5 m/s | 4.8 |
| 1996 | 28.1°C | 27.8°C | 27.5°C | 29.2°C | 26.3°C | 134 mm | 80% | 7.2 m/s | 4.5 |
| 1995 | 28.7°C | 28.4°C | 28.1°C | 29.3°C | 27.5°C | 134 mm | 79% | 6 m/s | 4.5 |
| 1994 | 27.4°C | 27.1°C | 26.8°C | 28.2°C | 26.3°C | 71 mm | 79% | 7.3 m/s | 4.4 |
| 1993 | 27.8°C | 27.5°C | 27.2°C | 28.6°C | 26.5°C | 43 mm | 80% | 7.4 m/s | 4.7 |
| 1992 | 27.2°C | 26.9°C | 26.5°C | 28.4°C | 25.6°C | 22 mm | 74% | 7.5 m/s | 4.8 |
| 1991 ❄️ | 27.2°C | 26.9°C | 26.5°C | 27.5°C | 25.7°C | 27 mm | 78% | 6.2 m/s | 4.9 |
| 1990 | 27.6°C | 27.2°C | 26.9°C | 28.4°C | 26.1°C | 159 mm | 81% | 7.2 m/s | 4.7 |
| 1989 | 28.0°C | 27.7°C | 27.5°C | 28.7°C | 26.4°C | 50 mm | 82% | 6.2 m/s | 4.7 |
| 1988 | 28.6°C | 28.3°C | 27.9°C | 29.2°C | 27.1°C | 40 mm | 80% | 6.3 m/s | 4.9 |
| 1987 | 28.3°C | 27.9°C | 27.6°C | 28.9°C | 27.0°C | 83 mm | 80% | 6.9 m/s | 4.7 |
| 1986 | 27.8°C | 27.4°C | 27.1°C | 28.6°C | 26.3°C | 164 mm | 82% | 7 m/s | 4.2 |
| 1985 | 28.1°C | 27.8°C | 27.4°C | 28.7°C | 26.7°C | 98 mm | 81% | 6.5 m/s | 4.5 |
| 1984 | 28.1°C | 27.8°C | 27.5°C | 28.6°C | 26.5°C | 103 mm | 80% | 6.5 m/s | 4.7 |
| 1983 | 28.2°C | 27.9°C | 27.5°C | 28.8°C | 26.3°C | 136 mm | 81% | 5.4 m/s | — |
| 1982 | 27.4°C | 27.1°C | 26.7°C | 28.5°C | 25.9°C | 141 mm | 80% | 6.8 m/s | — |
| 1981 | 28.3°C | 28.0°C | 27.7°C | 28.9°C | 26.9°C | 173 mm | 81% | 6.4 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 28.4°C with lows near 27.7°C (mean 28.1°C), based on 45 years of NASA POWER data.
December averages 84 mm of rainfall in Agat, one of the drier months. The wettest on record was 186 mm in 2022.
The hottest December reached 29.9°C in 2022. The coldest dipped to 25.6°C in 1992.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.9°C. Daytime highs moved from 28°C to 29°C and overnight lows from 27.4°C to 28.3°C over the same span.
December is close to Agat's year-round average and one of the drier months, so plan for around 28.4°C daytime highs and 27.7°C at night.
Not quite — December is the 5th coolest month in Agat, averaging 28.1°C.
For December in Agat, pack light layers you can adjust through the day, with typical highs of 28.4°C and lows of 27.7°C. Bring an umbrella or light rain jacket too.
Relative humidity in December averages 79% — quite humid.
Average wind speed in December is 6.5 m/s. The windiest December on record averaged 7.5 m/s (1992).
The wettest December on record was 2022 with 186 mm. On average, December sees 84 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 Agat 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.
