December is one of the cooler months of the year in Lahaul and Spiti, with average highs near -2.3°C and lows around -12.6°C (mean -7.4°C). It is one of the drier months, averaging 18 mm of rainfall and 60% relative humidity across the period.
December is one of the cooler months of the year in Lahaul and Spiti. Across 45 years of records, the warmest December in Lahaul and Spiti was 2016 — when the month averaged -3.2°C — while the coldest was 2019 at -11.8°C. Typical December days reach -2.3°C with nights near -12.6°C. The long-term December temperature trend is broadly flat.
December is one of the drier months in Lahaul and Spiti, averaging 18 mm of rainfall. The wettest December on record was 1989 with 73 mm, while the driest were 1999, 2005 and 2025, among others at 0 mm.
Relative humidity in Lahaul and Spiti during December averages 60%. The most humid December was 2020 at 75%, and the least humid was 1999 at 34%.
December receives about 2.9 kWh/m²/day of solar energy in Lahaul and Spiti. The sunniest December was 2023 at 3.8 kWh/m²/day, and the cloudiest was 1997 at 2.2.
Average wind speed in Lahaul and Spiti during December is 1.5 m/s. The windiest Decembers were 1990 and 1994 at 1.9 m/s, while the calmest were 2016, 2023 and 2025, among others at 1.3 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | -7.7°C | -7.0°C | -7.2°C | -8.0°C | -7.7°C | 0°C |
| Avg High | -2.6°C | -1.8°C | -2.1°C | -2.7°C | -2.5°C | +0.1°C |
| Avg Low | -12.9°C | -12.1°C | -12.3°C | -13.2°C | -12.8°C | +0.1°C |
| Avg Rain | 23 mm | 8 mm | 12 mm | 26 mm | 22 mm | 0 mm |
December temperatures in Lahaul and Spiti have risen by about 1.1°C between 1981–1985 and 2021–2025.
December has ranged from a record low of -30.3°C (2019) to a record high of 7.6°C (2011).
Rainfall in December is one of the drier months, averaging 18 mm, with a wettest year of 73 mm.
A quieter season to visit Lahaul and Spiti
If your dates are flexible, the more temperate months of June and July tend to be the most comfortable for visiting Lahaul and Spiti. That said, December — with days averaging -2.3°C and nights around -12.6°C (mean -7.4°C) and low rainfall (18 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 0.3°C | -4.5°C | -9.3°C | 5.0°C | -14.3°C | 0 mm | 55% | 1.3 m/s | — |
| 2024 | -3.0°C | -7.9°C | -12.8°C | 1.8°C | -23.9°C | 59 mm | 60% | 1.6 m/s | 3 |
| 2023 | -0.6°C | -5.8°C | -11.0°C | 4.0°C | -17.3°C | 3 mm | 58% | 1.3 m/s | 3.8 |
| 2022 | -2.1°C | -7.0°C | -12.0°C | 2.8°C | -17.5°C | 11 mm | 63% | 1.5 m/s | 3.7 |
| 2021 | -4.4°C | -9.9°C | -15.3°C | 2.0°C | -23.0°C | 28 mm | 73% | 1.5 m/s | 2.8 |
| 2020 | -5.3°C | -10.9°C | -16.5°C | -0.6°C | -22.8°C | 35 mm | 75% | 1.5 m/s | 3.3 |
| 2019 ❄️ | -5.1°C | -11.8°C | -18.5°C | 0.0°C | -30.3°C | 71 mm | 69% | 1.6 m/s | 2.9 |
| 2018 | -3.9°C | -9.8°C | -15.8°C | 1.2°C | -24.8°C | 17 mm | 67% | 1.5 m/s | 3.4 |
| 2017 | -2.2°C | -7.8°C | -13.3°C | 5.9°C | -20.7°C | 43 mm | 67% | 1.7 m/s | 2.8 |
| 2016 🔥 | 1.6°C | -3.2°C | -8.0°C | 6.9°C | -15.8°C | 1 mm | 46% | 1.3 m/s | 3.4 |
| 2015 | -3.8°C | -9.2°C | -14.6°C | 5.5°C | -24.8°C | 51 mm | 72% | 1.5 m/s | 2.9 |
| 2014 | -2.4°C | -7.0°C | -11.6°C | 3.4°C | -18.5°C | 9 mm | 55% | 1.5 m/s | 3 |
| 2013 | -3.1°C | -7.6°C | -12.1°C | 3.5°C | -17.2°C | 8 mm | 67% | 1.8 m/s | 3.3 |
| 2012 | -2.5°C | -7.4°C | -12.2°C | 2.6°C | -23.2°C | 28 mm | 66% | 1.7 m/s | 2.7 |
| 2011 | -2.7°C | -8.0°C | -13.3°C | 7.6°C | -17.9°C | 7 mm | 55% | 1.5 m/s | 3.5 |
| 2010 | -2.6°C | -7.8°C | -13.0°C | 0.8°C | -18.3°C | 30 mm | 56% | 1.5 m/s | 3.4 |
| 2009 | -2.6°C | -7.6°C | -12.5°C | 2.7°C | -19.0°C | 2 mm | 56% | 1.4 m/s | 2.5 |
| 2008 | -1.0°C | -6.3°C | -11.6°C | 4.3°C | -18.6°C | 14 mm | 62% | 1.5 m/s | 2.9 |
| 2007 | -3.5°C | -8.2°C | -12.8°C | 1.3°C | -19.5°C | 4 mm | 54% | 1.5 m/s | 2.8 |
| 2006 | -2.8°C | -8.1°C | -13.4°C | 1.5°C | -20.6°C | 23 mm | 66% | 1.5 m/s | 2.3 |
| 2005 | -2.5°C | -7.9°C | -13.4°C | 1.4°C | -19.1°C | 0 mm | 49% | 1.4 m/s | 3.4 |
| 2004 | -0.7°C | -5.8°C | -10.9°C | 4.6°C | -21.5°C | 16 mm | 53% | 1.5 m/s | 2.7 |
| 2003 | -3.8°C | -9.0°C | -14.2°C | 3.8°C | -25.3°C | 36 mm | 73% | 1.5 m/s | 2.4 |
| 2002 | -2.4°C | -7.0°C | -11.6°C | 1.6°C | -17.4°C | 5 mm | 56% | 1.4 m/s | 3.1 |
| 2001 | -1.3°C | -6.3°C | -11.4°C | 2.6°C | -16.4°C | 8 mm | 57% | 1.4 m/s | 2.3 |
| 2000 | -0.4°C | -5.9°C | -11.4°C | 5.1°C | -18.8°C | 8 mm | 45% | 1.4 m/s | 2.8 |
| 1999 | 0.5°C | -5.4°C | -11.3°C | 3.7°C | -17.0°C | 0 mm | 34% | 1.4 m/s | 3.6 |
| 1998 | 1.5°C | -4.7°C | -11.0°C | 4.7°C | -17.3°C | 0 mm | 36% | 1.4 m/s | 2.9 |
| 1997 | -4.9°C | -9.6°C | -14.3°C | -2.0°C | -20.9°C | 12 mm | 74% | 1.5 m/s | 2.2 |
| 1996 | -1.6°C | -7.1°C | -12.6°C | 2.5°C | -16.4°C | 3 mm | 45% | 1.4 m/s | 3.1 |
| 1995 | -4.1°C | -8.6°C | -13.1°C | 0.0°C | -19.2°C | 7 mm | 73% | 1.4 m/s | 2.4 |
| 1994 | -3.3°C | -8.1°C | -12.8°C | 3.1°C | -26.9°C | 30 mm | 67% | 1.9 m/s | 3.3 |
| 1993 | -0.2°C | -5.8°C | -11.3°C | 5.2°C | -16.8°C | 0 mm | 44% | 1.4 m/s | 3.4 |
| 1992 | -1.1°C | -6.5°C | -11.8°C | 2.8°C | -15.6°C | 3 mm | 60% | 1.3 m/s | 3 |
| 1991 | -2.5°C | -6.7°C | -10.9°C | 3.8°C | -22.1°C | 19 mm | 67% | 1.3 m/s | 2.8 |
| 1990 | -2.8°C | -7.2°C | -11.7°C | 1.7°C | -16.4°C | 5 mm | 62% | 1.9 m/s | 2.4 |
| 1989 🌧️ | -2.9°C | -8.3°C | -13.7°C | 3.6°C | -24.8°C | 73 mm | 64% | 1.4 m/s | 2.6 |
| 1988 | -1.1°C | -6.1°C | -11.1°C | 5.6°C | -23.6°C | 35 mm | 62% | 1.5 m/s | 2.4 |
| 1987 | 1.9°C | -4.3°C | -10.5°C | 4.4°C | -16.3°C | 5 mm | 38% | 1.6 m/s | 3 |
| 1986 | -4.6°C | -10.2°C | -15.8°C | 4.4°C | -24.1°C | 32 mm | 70% | 1.7 m/s | 2.3 |
| 1985 | -2.2°C | -7.1°C | -12.1°C | 3.8°C | -20.8°C | 37 mm | 64% | 1.7 m/s | 2.6 |
| 1984 | -3.9°C | -8.1°C | -12.3°C | 4.1°C | -16.1°C | 5 mm | 64% | 1.8 m/s | 3 |
| 1983 | -3.0°C | -7.5°C | -11.9°C | 1.4°C | -15.7°C | 1 mm | 55% | 1.5 m/s | — |
| 1982 | -3.6°C | -8.1°C | -12.5°C | 1.2°C | -17.7°C | 14 mm | 68% | 1.5 m/s | — |
| 1981 | -3.8°C | -9.9°C | -16.0°C | -0.1°C | -20.3°C | 4 mm | 63% | 1.4 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around -2.3°C with lows near -12.6°C (mean -7.4°C), based on 45 years of NASA POWER data.
December averages 18 mm of rainfall in Lahaul and Spiti, one of the drier months. The wettest on record was 73 mm in 1989.
The hottest December reached 7.6°C in 2011. The coldest dipped to -30.3°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have risen by about 1.1°C. Daytime highs moved from -3.3°C to -2°C and overnight lows from -13°C to -12.1°C over the same span.
December is one of the cooler months of the year in Lahaul and Spiti and one of the drier months, so plan for around -2.3°C daytime highs and -12.6°C at night.
Not quite — December is the 3rd coolest month in Lahaul and Spiti, averaging -7.4°C.
For December in Lahaul and Spiti, pack warm layers and a jacket for chilly mornings, with typical highs of -2.3°C and lows of -12.6°C.
Relative humidity in December averages 60% — moderately humid.
Average wind speed in December is 1.5 m/s. The windiest December on record averaged 1.9 m/s (1990).
The wettest December on record was 1989 with 73 mm. On average, December sees 18 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 Lahaul and Spiti 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.
