December is one of the cooler months of the year in Sirmaur, with average highs near 24.8°C and lows around 4.8°C (mean 14.8°C). It is one of the drier months, averaging 11 mm of rainfall and 42% relative humidity across the period.
December is one of the cooler months of the year in Sirmaur. Across 45 years of records, the warmest December in Sirmaur was 2017 — when the month averaged 16.6°C — while the coldest was 2019 at 11.5°C. Typical December days reach 24.8°C with nights near 4.8°C. The long-term December temperature trend is broadly flat.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 14.7°C | 14.6°C | 15.1°C | 14.6°C | 14.9°C | +0.2°C |
| Avg High | 24.7°C | 24.5°C | 25.5°C | 24.7°C | 24.3°C | -0.4°C |
| Avg Low | 4.8°C | 4.7°C | 4.7°C | 4.6°C | 5.6°C | +0.8°C |
| Avg Rain | 14 mm | 8 mm | 7 mm | 16 mm | 11 mm | -3 mm |
December temperatures in Sirmaur have risen by about 0.4°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 0.6°C (2019) to a record high of 27.4°C (2014).
Rainfall in December is one of the drier months, averaging 11 mm, with a wettest year of 55 mm.
A good time to visit Sirmaur
December is a good time to visit Sirmaur, with days averaging 24.8°C and nights around 4.8°C (mean 14.8°C, cooler than Sirmaur's yearly average) and low rainfall. October and March are marginally more temperate, but December still suits most travellers.
| Year | High | Low | Avg | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|
| 2025 | 24.0°C | 6.7°C | 15.4°C | 0 mm | 50% | 1.3 m/s | — |
| 2024 | 24.7°C | 5.0°C | 14.9°C | 38 mm | 49% | 1.5 m/s | 3.3 |
| 2023 | 23.4°C | 7.2°C | 15.3°C | 3 mm | 52% | 1.4 m/s | 3.5 |
| 2022 | 24.6°C | 5.6°C | 15.1°C | 1 mm | 56% | 1.5 m/s | 3.5 |
| 2021 | 22.7°C | 4.4°C | 13.5°C | 10 mm | 56% | 1.3 m/s | 3.4 |
| 2020 | 26.2°C | 4.5°C | 15.4°C | 14 mm | 38% | 1.5 m/s | 3.6 |
| 2019 ❄️ | 22.4°C | 0.6°C | 11.5°C | 35 mm | 50% | 1.3 m/s | 3.1 |
| 2018 | 22.0°C | 2.3°C | 12.2°C | 5 mm | 52% | 1.4 m/s | 3.6 |
| 2017 🔥 | 26.3°C | 7.0°C | 16.6°C | 21 mm | 45% | 1.5 m/s | 3.4 |
| 2016 | 27.2°C | 5.5°C | 16.4°C | 4 mm | 33% | 1.5 m/s | 3.6 |
| 2015 | 26.0°C | 4.8°C | 15.4°C | 12 mm | 42% | 1.6 m/s | 3.4 |
| 2014 | 27.4°C | 5.5°C | 16.4°C | 27 mm | 39% | 1.6 m/s | 3.3 |
| 2013 | 24.2°C | 4.5°C | 14.3°C | 7 mm | 50% | 1.5 m/s | 3.5 |
| 2012 | 25.1°C | 6.0°C | 15.5°C | 16 mm | 51% | 1.6 m/s | 3.2 |
| 2011 | 24.3°C | 6.1°C | 15.2°C | 7 mm | 46% | 1.4 m/s | 3.6 |
| 2010 | 21.8°C | 3.8°C | 12.8°C | 30 mm | 56% | 1.4 m/s | 3.5 |
| 2009 | 23.1°C | 4.9°C | 14.0°C | 0 mm | 40% | 1.4 m/s | 3.4 |
| 2008 | 26.4°C | 6.4°C | 16.4°C | 0 mm | 47% | 1.4 m/s | 3.5 |
| 2007 | 26.1°C | 3.7°C | 14.9°C | 4 mm | 39% | 1.6 m/s | 3.5 |
| 2006 | 25.9°C | 5.4°C | 15.6°C | 19 mm | 43% | 1.5 m/s | 3.2 |
| 2005 | 24.2°C | 5.8°C | 15.0°C | 0 mm | 37% | 1.5 m/s | 3.7 |
| 2004 | 26.2°C | 4.1°C | 15.2°C | 6 mm | 42% | 1.6 m/s | 3.4 |
| 2003 | 24.5°C | 3.6°C | 14.0°C | 18 mm | 51% | 1.5 m/s | 3.2 |
| 2002 | 26.1°C | 3.5°C | 14.8°C | 10 mm | 37% | 1.5 m/s | 3.5 |
| 2001 | 26.2°C | 5.7°C | 15.9°C | 9 mm | 36% | 1.6 m/s | 3.5 |
| 2000 | 26.0°C | 4.3°C | 15.1°C | 2 mm | 23% | 1.7 m/s | 3.6 |
| 1999 | 26.0°C | 5.2°C | 15.6°C | 1 mm | 25% | 1.5 m/s | 3.7 |
| 1998 | 26.2°C | 5.7°C | 16.0°C | 0 mm | 45% | 1.4 m/s | 3.7 |
| 1997 | 21.6°C | 4.7°C | 13.1°C | 46 mm | 59% | 1.3 m/s | 2.9 |
| 1996 | 23.3°C | 4.5°C | 13.9°C | 0 mm | 36% | 1.5 m/s | 3.5 |
| 1995 | 23.8°C | 5.9°C | 14.9°C | 6 mm | 42% | 1.5 m/s | 3.2 |
| 1994 | 24.0°C | 4.0°C | 14.0°C | 3 mm | 40% | 1.6 m/s | 3.2 |
| 1993 | 26.2°C | 4.5°C | 15.3°C | 0 mm | 32% | 1.5 m/s | 3.2 |
| 1992 | 24.2°C | 5.7°C | 15.0°C | 0 mm | 36% | 1.6 m/s | 3.3 |
| 1991 | 26.2°C | 3.5°C | 14.8°C | 26 mm | 47% | 1.5 m/s | 3.1 |
| 1990 | 23.6°C | 2.9°C | 13.3°C | 2 mm | 42% | 1.6 m/s | 3.2 |
| 1989 🌧️ | 23.3°C | 4.7°C | 14.0°C | 55 mm | 40% | 1.5 m/s | 3.1 |
| 1988 | 24.7°C | 6.0°C | 15.3°C | 18 mm | 45% | 1.5 m/s | 3.1 |
| 1987 | 26.2°C | 6.2°C | 16.2°C | 4 mm | 17% | 1.5 m/s | 3.2 |
| 1986 | 26.0°C | 4.1°C | 15.1°C | 7 mm | 37% | 1.6 m/s | 3 |
| 1985 | 24.0°C | 5.1°C | 14.5°C | 23 mm | 50% | 1.6 m/s | 3.2 |
| 1984 | 26.0°C | 4.7°C | 15.3°C | 1 mm | 35% | 1.8 m/s | 3.1 |
| 1983 | 24.4°C | 4.0°C | 14.2°C | 4 mm | 33% | 1.5 m/s | — |
| 1982 | 25.5°C | 3.6°C | 14.6°C | 11 mm | 33% | 1.7 m/s | — |
| 1981 | 22.3°C | 4.5°C | 13.4°C | 2 mm | 41% | 1.4 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 24.8°C with lows near 4.8°C (mean 14.8°C), based on 45 years of NASA POWER data.
December averages 11 mm of rainfall in Sirmaur, one of the drier months. The wettest on record was 55 mm in 1989.
The hottest December reached 27.4°C in 2014. The coldest dipped to 0.6°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 0.4°C. Daytime highs moved from 24.4°C to 23.9°C and overnight lows from 4.4°C to 5.8°C over the same span.
December is one of the cooler months of the year in Sirmaur and one of the drier months, so plan for around 24.8°C daytime highs and 4.8°C at night.
Not quite — December is the 2nd coolest month in Sirmaur, averaging 14.8°C.
For December in Sirmaur, pack warm layers and a jacket for chilly mornings, with typical highs of 24.8°C and lows of 4.8°C.
Relative humidity in December averages 42% — relatively dry.
Average wind speed in December is 1.5 m/s. The windiest December on record averaged 1.8 m/s (1984).
The wettest December on record was 1989 with 55 mm. On average, December sees 11 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 Sirmaur 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.
