December is one of the cooler months of the year in Basti, with average highs near 24.4°C and lows around 10°C (mean 17.2°C). It is one of the drier months, averaging 8 mm of rainfall and 52% relative humidity across the period.
December is one of the cooler months of the year in Basti. Across 45 years of records, the warmest Decembers in Basti were 1988 and 1994 — when the month averaged 18.8°C — while the coldest was 2019 at 14.3°C. Typical December days reach 24.4°C with nights near 10°C. The long-term trend is cooling, about 0.3°C per decade.
December is one of the drier months in Basti, averaging 8 mm of rainfall. The wettest December on record was 1997 with 58 mm, while the driest were 2016, 2018 and 2025, among others at 0 mm.
Relative humidity in Basti during December averages 52%. The most humid December was 2022 at 77%, and the least humid was 1993 at 28%.
December receives about 3.1 kWh/m²/day of solar energy in Basti. The sunniest Decembers were 1992 and 1994 at 3.8 kWh/m²/day, and the cloudiest were 2016 and 2019 at 2.1.
Average wind speed in Basti during December is 1.5 m/s. The windiest December was 1982 at 2 m/s, while the calmest was 1998 at 1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.5°C | 17.9°C | 17.1°C | 16.5°C | 16.7°C | -0.8°C |
| Avg High | 25.0°C | 25.5°C | 24.2°C | 23.6°C | 23.5°C | -1.5°C |
| Avg Low | 10.0°C | 10.3°C | 10.1°C | 9.5°C | 10.0°C | 0°C |
| Avg Rain | 12 mm | 10 mm | 5 mm | 6 mm | 4 mm | -8 mm |
December temperatures in Basti have fallen by about 0.6°C between 1981–1985 and 2021–2025.
December has ranged from a record low of 1.6°C (2019) to a record high of 32.3°C (2015).
Rainfall in December is one of the drier months, averaging 8 mm, with a wettest year of 58 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.5°C per decade while lows fell 0.1°C per decade, narrowing the gap between day and night.
A good time to visit Basti
December is a good time to visit Basti, with days averaging 24.4°C and nights around 10°C (mean 17.2°C, cooler than Basti's yearly average) and low rainfall. November 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 | 22.6°C | 15.6°C | 8.6°C | 25.2°C | 5.2°C | 0 mm | 68% | 1.3 m/s | — |
| 2024 | 24.1°C | 17.1°C | 10.1°C | 27.0°C | 4.6°C | 1 mm | 63% | 1.6 m/s | 2.8 |
| 2023 | 24.9°C | 18.4°C | 11.9°C | 30.5°C | 8.4°C | 6 mm | 60% | 1.4 m/s | 2.6 |
| 2022 | 22.0°C | 15.5°C | 9.0°C | 24.7°C | 5.3°C | 0 mm | 77% | 1.5 m/s | 3 |
| 2021 | 21.7°C | 15.7°C | 9.8°C | 26.7°C | 3.2°C | 18 mm | 75% | 1.7 m/s | 2.7 |
| 2020 | 25.6°C | 18.1°C | 10.6°C | 30.0°C | 4.8°C | 0 mm | 46% | 1.9 m/s | 2.7 |
| 2019 ❄️ | 20.3°C | 14.3°C | 8.3°C | 24.3°C | 1.6°C | 29 mm | 77% | 1.6 m/s | 2.1 |
| 2018 | 23.9°C | 16.7°C | 9.6°C | 26.4°C | 3.6°C | 0 mm | 54% | 1.5 m/s | 3.1 |
| 2017 | 25.1°C | 18.3°C | 11.4°C | 29.1°C | 6.8°C | 0 mm | 51% | 1.5 m/s | 2.7 |
| 2016 | 24.7°C | 17.3°C | 9.9°C | 26.9°C | 6.3°C | 0 mm | 56% | 1.4 m/s | 2.1 |
| 2015 | 26.0°C | 18.5°C | 11.1°C | 32.3°C | 6.5°C | 4 mm | 36% | 1.5 m/s | 2.7 |
| 2014 | 23.3°C | 15.6°C | 7.9°C | 28.2°C | 4.5°C | 21 mm | 52% | 1.7 m/s | 2.5 |
| 2013 | 23.8°C | 16.9°C | 9.9°C | 26.5°C | 6.0°C | 1 mm | 66% | 1.5 m/s | 2.9 |
| 2012 | 22.3°C | 15.0°C | 7.7°C | 25.2°C | 4.4°C | 0 mm | 61% | 1.8 m/s | 2.8 |
| 2011 | 23.2°C | 16.4°C | 9.6°C | 27.2°C | 5.5°C | 2 mm | 57% | 1.2 m/s | 2.4 |
| 2010 | 23.1°C | 16.2°C | 9.3°C | 26.9°C | 4.9°C | 4 mm | 62% | 1.4 m/s | 3.3 |
| 2009 | 23.5°C | 16.6°C | 9.8°C | 26.5°C | 4.7°C | 7 mm | 61% | 1.6 m/s | 3.1 |
| 2008 | 23.2°C | 17.2°C | 11.1°C | 26.9°C | 7.8°C | 1 mm | 73% | 1.2 m/s | 2.6 |
| 2007 | 23.0°C | 15.7°C | 8.4°C | 25.9°C | 3.9°C | 1 mm | 56% | 1.5 m/s | 3.3 |
| 2006 | 25.2°C | 17.9°C | 10.6°C | 29.8°C | 6.8°C | 6 mm | 50% | 1.5 m/s | 3.2 |
| 2005 | 23.8°C | 16.6°C | 9.5°C | 27.8°C | 6.1°C | 3 mm | 51% | 1.3 m/s | 3.2 |
| 2004 | 24.6°C | 17.8°C | 11.0°C | 28.0°C | 4.5°C | 0 mm | 51% | 1.3 m/s | 2.8 |
| 2003 | 24.5°C | 17.5°C | 10.5°C | 28.9°C | 6.0°C | 9 mm | 54% | 1.4 m/s | 3.1 |
| 2002 | 25.1°C | 17.9°C | 10.8°C | 27.5°C | 7.0°C | 18 mm | 43% | 1.4 m/s | 3 |
| 2001 | 24.4°C | 17.0°C | 9.5°C | 26.3°C | 6.1°C | 0 mm | 45% | 1.1 m/s | 2.9 |
| 2000 | 24.6°C | 17.1°C | 9.6°C | 26.2°C | 7.2°C | 1 mm | 41% | 1.2 m/s | 3.7 |
| 1999 | 26.2°C | 18.2°C | 10.3°C | 29.0°C | 6.6°C | 3 mm | 36% | 1.3 m/s | 3.4 |
| 1998 | 25.4°C | 17.9°C | 10.4°C | 27.6°C | 6.7°C | 0 mm | 39% | 1 m/s | 3.2 |
| 1997 🌧️ | 22.6°C | 16.4°C | 10.2°C | 28.9°C | 5.2°C | 58 mm | 61% | 1.5 m/s | 2.4 |
| 1996 | 25.3°C | 17.2°C | 9.1°C | 27.1°C | 3.9°C | 0 mm | 38% | 1.3 m/s | 3.5 |
| 1995 | 26.2°C | 18.3°C | 10.5°C | 29.3°C | 6.3°C | 7 mm | 41% | 1.6 m/s | 3.3 |
| 1994 | 27.0°C | 18.8°C | 10.7°C | 31.0°C | 5.3°C | 0 mm | 30% | 1.4 m/s | 3.8 |
| 1993 | 26.0°C | 18.1°C | 10.3°C | 28.6°C | 6.1°C | 0 mm | 28% | 1.1 m/s | 3.7 |
| 1992 | 25.9°C | 18.3°C | 10.8°C | 27.7°C | 7.1°C | 0 mm | 40% | 1.2 m/s | 3.8 |
| 1991 | 24.7°C | 17.7°C | 10.6°C | 27.7°C | 5.7°C | 28 mm | 48% | 1.5 m/s | 3.4 |
| 1990 | 25.6°C | 17.9°C | 10.2°C | 27.7°C | 5.6°C | 2 mm | 44% | 1.5 m/s | 3.7 |
| 1989 | 25.3°C | 17.7°C | 10.2°C | 28.1°C | 6.2°C | 9 mm | 39% | 1.3 m/s | 3.6 |
| 1988 🔥 | 26.1°C | 18.8°C | 11.5°C | 28.6°C | 7.6°C | 15 mm | 44% | 1.4 m/s | 3.4 |
| 1987 | 25.5°C | 17.7°C | 9.9°C | 28.2°C | 5.6°C | 7 mm | 40% | 1.1 m/s | 3.7 |
| 1986 | 25.1°C | 17.9°C | 10.7°C | 28.4°C | 5.7°C | 37 mm | 44% | 1.5 m/s | 3.6 |
| 1985 | 23.0°C | 16.4°C | 9.8°C | 26.3°C | 5.1°C | 5 mm | 71% | 1.8 m/s | 3.6 |
| 1984 | 26.2°C | 17.8°C | 9.3°C | 28.5°C | 4.0°C | 3 mm | 39% | 1.8 m/s | 3.6 |
| 1983 | 24.8°C | 17.3°C | 9.8°C | 27.9°C | 5.3°C | 21 mm | 48% | 1.6 m/s | — |
| 1982 | 25.3°C | 17.5°C | 9.7°C | 28.7°C | 6.1°C | 7 mm | 48% | 2 m/s | — |
| 1981 | 23.6°C | 16.3°C | 9.0°C | 25.6°C | 6.3°C | 5 mm | 57% | 1.5 m/s | — |
Actual recorded December data for each year, 1981–2025 — sourced from NASA POWER.
The average high in December is around 24.4°C with lows near 10°C (mean 17.2°C), based on 45 years of NASA POWER data.
December averages 8 mm of rainfall in Basti, one of the drier months. The wettest on record was 58 mm in 1997.
The hottest December reached 32.3°C in 2015. The coldest dipped to 1.6°C in 2019.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average December temperatures have fallen by about 0.6°C — but days and nights have moved in opposite directions. Overnight lows rose from 9.5°C to 9.9°C while daytime highs eased from 24.6°C to 23.1°C, narrowing the gap between day and night.
December is one of the cooler months of the year in Basti and one of the drier months, so plan for around 24.4°C daytime highs and 10°C at night.
Not quite — December is the 2nd coolest month in Basti, averaging 17.2°C.
For December in Basti, pack light layers you can adjust through the day, with typical highs of 24.4°C and lows of 10°C.
Relative humidity in December averages 52% — relatively dry.
Average wind speed in December is 1.5 m/s. The windiest December on record averaged 2 m/s (1982).
The wettest December on record was 1997 with 58 mm. On average, December sees 8 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 Basti 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.
