November is one of the cooler months of the year in Siwan, with average highs near 28.3°C and lows around 14.7°C (mean 21.5°C). It is one of the drier months, averaging 4 mm of rainfall and 59% relative humidity across the period.
November is one of the cooler months of the year in Siwan. Across 45 years of records, the warmest November in Siwan was 2015 — when the month averaged 24.6°C — while the coldest was 2012 at 18.5°C. Typical November days reach 28.3°C with nights near 14.7°C. The long-term November temperature trend is broadly flat.
November is one of the drier months in Siwan, averaging 4 mm of rainfall. The wettest November on record was 1995 with 44 mm, while the driest were 2021, 2022 and 2024, among others at 0 mm.
Relative humidity in Siwan during November averages 59%. The most humid November was 2021 at 82%, and the least humid was 1989 at 35%.
November receives about 3.9 kWh/m²/day of solar energy in Siwan. The sunniest Novembers were 1985 and 1988 at 4.6 kWh/m²/day, and the cloudiest was 2024 at 3.
Average wind speed in Siwan during November is 1.2 m/s. The windiest November was 2025 at 1.6 m/s, while the calmest was 2007 at 0.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 21.3°C | 21.9°C | 21.5°C | 21.5°C | 21.1°C | -0.2°C |
| Avg High | 28.3°C | 29.1°C | 28.0°C | 28.1°C | 27.4°C | -0.9°C |
| Avg Low | 14.3°C | 14.8°C | 15.0°C | 14.9°C | 14.8°C | +0.5°C |
| Avg Rain | 6 mm | 11 mm | 2 mm | 1 mm | 1 mm | -5 mm |
November temperatures in Siwan have risen by about 0.3°C between 1981–1985 and 2021–2025.
November has ranged from a record low of 7.1°C (1985) to a record high of 35.2°C (1992).
Rainfall in November is one of the drier months, averaging 4 mm, with a wettest year of 44 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.3°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
One of the best times to visit Siwan
November is one of the best times to visit Siwan. Expect days averaging 28.3°C and nights around 14.7°C (mean 21.5°C) — cooler than Siwan's yearly average — with low rainfall (4 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 | 25.5°C | 19.3°C | 13.1°C | 28.5°C | 10.1°C | 3 mm | 81% | 1.6 m/s | 3.4 |
| 2024 | 29.6°C | 23.1°C | 16.7°C | 33.4°C | 12.2°C | 0 mm | 63% | 1.4 m/s | 3 |
| 2023 | 30.2°C | 23.8°C | 17.5°C | 32.5°C | 13.7°C | 1 mm | 56% | 1.1 m/s | 3.3 |
| 2022 | 27.8°C | 20.9°C | 14.0°C | 30.4°C | 10.1°C | 0 mm | 69% | 1.5 m/s | 3.7 |
| 2021 | 24.7°C | 18.9°C | 13.2°C | 27.3°C | 9.8°C | 0 mm | 82% | 1.4 m/s | 3.6 |
| 2020 | 26.5°C | 20.3°C | 14.2°C | 29.8°C | 8.2°C | 1 mm | 70% | 1.3 m/s | 3.6 |
| 2019 | 27.2°C | 21.4°C | 15.6°C | 30.3°C | 12.2°C | 0 mm | 79% | 1.4 m/s | 3.4 |
| 2018 | 30.3°C | 23.2°C | 16.1°C | 35.0°C | 12.4°C | 0 mm | 51% | 1.4 m/s | 3.6 |
| 2017 | 30.1°C | 23.0°C | 16.0°C | 33.3°C | 9.8°C | 0 mm | 53% | 1.4 m/s | 3.8 |
| 2016 | 27.6°C | 20.3°C | 13.0°C | 31.3°C | 10.3°C | 0 mm | 71% | 1.5 m/s | 3.7 |
| 2015 🔥 | 31.3°C | 24.6°C | 17.9°C | 33.0°C | 15.1°C | 0 mm | 44% | 1.1 m/s | 3.3 |
| 2014 | 26.3°C | 19.4°C | 12.6°C | 28.9°C | 9.0°C | 0 mm | 63% | 1.3 m/s | 3.7 |
| 2013 | 25.9°C | 19.6°C | 13.3°C | 28.4°C | 9.9°C | 0 mm | 72% | 1.1 m/s | 3.6 |
| 2012 ❄️ | 25.5°C | 18.5°C | 11.6°C | 27.1°C | 7.8°C | 6 mm | 65% | 1.4 m/s | 3.8 |
| 2011 | 27.5°C | 21.5°C | 15.6°C | 29.4°C | 11.7°C | 0 mm | 68% | 1 m/s | 3.4 |
| 2010 | 28.9°C | 23.1°C | 17.2°C | 31.7°C | 11.8°C | 1 mm | 68% | 1.3 m/s | 3.6 |
| 2009 | 28.9°C | 22.0°C | 15.1°C | 32.5°C | 8.9°C | 4 mm | 56% | 1.5 m/s | 3.6 |
| 2008 | 25.8°C | 20.3°C | 14.7°C | 28.2°C | 9.5°C | 0 mm | 76% | 0.9 m/s | 3.7 |
| 2007 | 25.7°C | 20.4°C | 15.0°C | 28.1°C | 11.1°C | 1 mm | 73% | 0.8 m/s | 4 |
| 2006 | 28.2°C | 22.0°C | 15.9°C | 30.8°C | 10.1°C | 5 mm | 58% | 1.2 m/s | 3.6 |
| 2005 | 27.8°C | 20.6°C | 13.4°C | 29.6°C | 9.4°C | 0 mm | 58% | 1.2 m/s | 4 |
| 2004 | 29.2°C | 22.3°C | 15.3°C | 31.2°C | 12.5°C | 5 mm | 48% | 1.1 m/s | 3.9 |
| 2003 | 28.1°C | 20.9°C | 13.7°C | 30.6°C | 9.7°C | 0 mm | 58% | 1.3 m/s | 3.9 |
| 2002 | 30.2°C | 23.1°C | 16.0°C | 33.1°C | 11.1°C | 0 mm | 46% | 1.2 m/s | 3.9 |
| 2001 | 27.1°C | 21.2°C | 15.3°C | 30.3°C | 8.8°C | 1 mm | 64% | 0.9 m/s | 3.7 |
| 2000 | 29.0°C | 22.1°C | 15.1°C | 31.4°C | 12.3°C | 0 mm | 52% | 1.2 m/s | 4.1 |
| 1999 | 30.0°C | 22.4°C | 14.7°C | 33.6°C | 10.9°C | 0 mm | 43% | 1.2 m/s | 4.5 |
| 1998 | 27.7°C | 21.8°C | 16.0°C | 29.8°C | 9.7°C | 21 mm | 70% | 1.2 m/s | 4.1 |
| 1997 | 27.9°C | 21.9°C | 16.0°C | 29.7°C | 12.2°C | 21 mm | 64% | 1.2 m/s | 3.9 |
| 1996 | 27.9°C | 20.1°C | 12.3°C | 30.4°C | 8.6°C | 0 mm | 58% | 1.5 m/s | 4.5 |
| 1995 🌧️ | 29.0°C | 21.7°C | 14.4°C | 32.6°C | 7.3°C | 44 mm | 52% | 1.4 m/s | 4.3 |
| 1994 | 30.2°C | 22.8°C | 15.4°C | 32.1°C | 12.3°C | 6 mm | 44% | 1.1 m/s | 4.5 |
| 1993 | 28.2°C | 21.2°C | 14.3°C | 30.3°C | 7.6°C | 15 mm | 59% | 1.2 m/s | 4.3 |
| 1992 | 30.6°C | 23.1°C | 15.5°C | 35.2°C | 11.3°C | 3 mm | 43% | 1.3 m/s | 4.5 |
| 1991 | 29.3°C | 21.6°C | 13.9°C | 32.4°C | 8.9°C | 0 mm | 43% | 1.4 m/s | 4.3 |
| 1990 | 30.5°C | 22.8°C | 15.0°C | 32.7°C | 8.8°C | 0 mm | 50% | 1.4 m/s | 4.5 |
| 1989 | 30.4°C | 22.7°C | 15.1°C | 33.6°C | 12.8°C | 2 mm | 35% | 1.2 m/s | 4.4 |
| 1988 | 29.4°C | 22.4°C | 15.3°C | 30.7°C | 8.9°C | 0 mm | 50% | 1.1 m/s | 4.6 |
| 1987 | 25.7°C | 19.7°C | 13.7°C | 29.8°C | 7.5°C | 2 mm | 70% | 1 m/s | 4.4 |
| 1986 | 30.2°C | 22.2°C | 14.3°C | 32.0°C | 12.2°C | 2 mm | 40% | 1.2 m/s | 4.5 |
| 1985 | 25.2°C | 19.3°C | 13.5°C | 27.8°C | 7.1°C | 0 mm | 73% | 1.1 m/s | 4.6 |
| 1984 | 28.2°C | 20.9°C | 13.6°C | 30.3°C | 9.4°C | 0 mm | 46% | 1.1 m/s | 4.5 |
| 1983 | 30.2°C | 22.3°C | 14.4°C | 33.3°C | 11.8°C | 0 mm | 41% | 1.2 m/s | — |
| 1982 | 29.4°C | 22.3°C | 15.2°C | 33.2°C | 7.7°C | 17 mm | 52% | 1.5 m/s | — |
| 1981 | 26.4°C | 19.9°C | 13.4°C | 29.5°C | 8.5°C | 28 mm | 70% | 1.3 m/s | — |
Actual recorded November data for each year, 1981–2025 — sourced from NASA POWER.
The average high in November is around 28.3°C with lows near 14.7°C (mean 21.5°C), based on 45 years of NASA POWER data.
November averages 4 mm of rainfall in Siwan, one of the drier months. The wettest on record was 44 mm in 1995.
The hottest November reached 35.2°C in 1992. The coldest dipped to 7.1°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average November temperatures have risen by about 0.3°C — but days and nights have moved in opposite directions. Overnight lows rose from 14°C to 14.9°C while daytime highs eased from 27.9°C to 27.6°C, narrowing the gap between day and night.
November is one of the cooler months of the year in Siwan and one of the drier months, so plan for around 28.3°C daytime highs and 14.7°C at night.
Not quite — November is the 4th coolest month in Siwan, averaging 21.5°C.
For November in Siwan, pack light layers you can adjust through the day, with typical highs of 28.3°C and lows of 14.7°C.
Relative humidity in November averages 59% — moderately humid.
Average wind speed in November is 1.2 m/s. The windiest November on record averaged 1.6 m/s (2025).
The wettest November on record was 1995 with 44 mm. On average, November sees 4 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 Siwan behaves each November, 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 November specifically, along with year-by-year records and how the month has changed over the decades.
