September is one of the warmer months of the year in Sanchor, with average highs near 36.3°C and lows around 25°C (mean 30.7°C). It is a relatively wet time of year, averaging 60 mm of rainfall and 59% relative humidity across the period.
September is one of the warmer months of the year in Sanchor. Across 45 years of records, the warmest September in Sanchor was 1999 — when the month averaged 33.7°C — while the coldest was 2011 at 28°C. Typical September days reach 36.3°C with nights near 25°C. The long-term trend is cooling, about 0.5°C per decade.
September is a relatively wet time of year in Sanchor, averaging 60 mm of rainfall. The wettest September on record was 2012 with 240 mm, while the driest were 1986 and 1987 at 0 mm.
Relative humidity in Sanchor during September averages 59%. The most humid September was 2011 at 80%, and the least humid was 1986 at 37%.
September receives about 5.7 kWh/m²/day of solar energy in Sanchor. The sunniest September was 1986 at 6.5 kWh/m²/day, and the cloudiest was 2021 at 4.5.
Average wind speed in Sanchor during September is 2.5 m/s. The windiest September was 1991 at 3.2 m/s, while the calmest were 2006, 2010 and 2019 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 31.5°C | 31.1°C | 31.3°C | 29.4°C | 29.5°C | -2°C |
| Avg High | 37.9°C | 37.0°C | 37.3°C | 34.5°C | 33.9°C | -4°C |
| Avg Low | 25.1°C | 25.2°C | 25.3°C | 24.3°C | 25.1°C | 0°C |
| Avg Rain | 21 mm | 62 mm | 27 mm | 98 mm | 107 mm | +86 mm |
September temperatures in Sanchor have fallen by about 1.4°C between 1981–1985 and 2021–2025.
September has ranged from a record low of 19.7°C (1994) to a record high of 43.2°C (1999).
Rainfall in September is a relatively wet time of year, averaging 60 mm, with a wettest year of 240 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 1°C per decade while lows fell 0.1°C per decade, narrowing the gap between day and night.
A good time to visit Sanchor
September is a good time to visit Sanchor, with days averaging 36.3°C and nights around 25°C (mean 30.7°C, warmer than Sanchor's yearly average) and moderate rainfall. February and December are marginally more temperate, but September still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 33.4°C | 28.9°C | 24.4°C | 37.7°C | 22.6°C | 71 mm | 74% | 2.7 m/s | 5 |
| 2024 | 34.4°C | 29.8°C | 25.2°C | 39.0°C | 22.8°C | 117 mm | 74% | 2.6 m/s | 5 |
| 2023 | 35.4°C | 30.2°C | 25.1°C | 39.7°C | 22.6°C | 127 mm | 68% | 2.6 m/s | 5.4 |
| 2022 | 32.8°C | 28.7°C | 24.6°C | 35.6°C | 22.5°C | 65 mm | 77% | 2.3 m/s | 5.7 |
| 2021 | 34.3°C | 30.4°C | 26.5°C | 37.7°C | 25.0°C | 160 mm | 72% | 2.3 m/s | 4.5 |
| 2020 | 33.4°C | 29.2°C | 25.0°C | 38.2°C | 22.4°C | 102 mm | 77% | 2 m/s | 5.5 |
| 2019 | 33.6°C | 29.7°C | 25.7°C | 37.7°C | 23.3°C | 106 mm | 77% | 1.9 m/s | 4.8 |
| 2018 | 36.6°C | 30.2°C | 23.9°C | 41.1°C | 22.4°C | 18 mm | 53% | 2.8 m/s | 5.4 |
| 2017 | 33.8°C | 28.7°C | 23.6°C | 36.8°C | 21.5°C | 25 mm | 70% | 2.2 m/s | 5.5 |
| 2016 | 35.3°C | 29.5°C | 23.6°C | 39.0°C | 21.9°C | 5 mm | 65% | 2.4 m/s | 6 |
| 2015 | 36.2°C | 30.0°C | 23.9°C | 40.0°C | 20.3°C | 50 mm | 58% | 2.3 m/s | 5.9 |
| 2014 | 34.7°C | 29.3°C | 23.9°C | 37.2°C | 22.0°C | 98 mm | 67% | 2.7 m/s | 5.4 |
| 2013 | 36.7°C | 31.1°C | 25.5°C | 42.5°C | 23.3°C | 109 mm | 59% | 2.4 m/s | 5.5 |
| 2012 🌧️ | 32.7°C | 28.6°C | 24.5°C | 35.6°C | 21.7°C | 240 mm | 74% | 2 m/s | 5.1 |
| 2011 ❄️ | 31.7°C | 28.0°C | 24.3°C | 34.2°C | 21.1°C | 145 mm | 80% | 2.6 m/s | 5.2 |
| 2010 | 33.4°C | 28.8°C | 24.1°C | 35.4°C | 20.0°C | 183 mm | 71% | 1.9 m/s | 5.4 |
| 2009 | 38.6°C | 31.6°C | 24.7°C | 43.0°C | 22.5°C | 4 mm | 54% | 2.8 m/s | 6.4 |
| 2008 | 36.7°C | 30.8°C | 24.8°C | 39.4°C | 21.9°C | 40 mm | 59% | 2.5 m/s | 5.8 |
| 2007 | 37.2°C | 31.5°C | 25.9°C | 40.9°C | 23.0°C | 37 mm | 60% | 2.5 m/s | 5.9 |
| 2006 | 32.4°C | 28.3°C | 24.1°C | 36.1°C | 22.1°C | 58 mm | 79% | 1.9 m/s | 5.7 |
| 2005 | 37.4°C | 31.8°C | 26.2°C | 42.6°C | 23.1°C | 72 mm | 57% | 2.4 m/s | 5.5 |
| 2004 | 37.5°C | 31.6°C | 25.7°C | 41.1°C | 23.2°C | 29 mm | 55% | 2.5 m/s | 5.9 |
| 2003 | 35.5°C | 30.0°C | 24.5°C | 39.6°C | 22.6°C | 6 mm | 65% | 2.8 m/s | 5.5 |
| 2002 | 39.1°C | 32.1°C | 25.2°C | 41.1°C | 22.0°C | 22 mm | 42% | 2.9 m/s | 6.1 |
| 2001 | 39.7°C | 32.9°C | 26.2°C | 42.7°C | 23.9°C | 6 mm | 39% | 2.2 m/s | 6 |
| 2000 | 39.2°C | 32.5°C | 25.8°C | 42.1°C | 23.3°C | 2 mm | 43% | 2.9 m/s | 5.8 |
| 1999 🔥 | 40.1°C | 33.7°C | 27.4°C | 43.2°C | 24.9°C | 7 mm | 40% | 2.9 m/s | 6 |
| 1998 | 37.2°C | 31.8°C | 26.5°C | 40.6°C | 24.4°C | 117 mm | 58% | 2.8 m/s | 5.6 |
| 1997 | 36.1°C | 30.5°C | 24.8°C | 39.4°C | 22.9°C | 45 mm | 60% | 2.6 m/s | 5.9 |
| 1996 | 38.3°C | 31.8°C | 25.3°C | 40.3°C | 23.3°C | 16 mm | 49% | 2.5 m/s | 6.2 |
| 1995 | 39.4°C | 32.8°C | 26.1°C | 42.1°C | 23.8°C | 13 mm | 42% | 2.4 m/s | 6.3 |
| 1994 | 33.0°C | 28.1°C | 23.1°C | 36.4°C | 19.7°C | 151 mm | 69% | 2.2 m/s | 5.6 |
| 1993 | 38.4°C | 32.1°C | 25.7°C | 41.2°C | 23.8°C | 52 mm | 49% | 2.6 m/s | 6.2 |
| 1992 | 34.5°C | 28.8°C | 23.1°C | 37.4°C | 19.8°C | 129 mm | 62% | 2.2 m/s | 5.7 |
| 1991 | 37.7°C | 31.1°C | 24.6°C | 40.6°C | 22.0°C | 5 mm | 46% | 3.2 m/s | 6 |
| 1990 | 35.4°C | 30.2°C | 25.0°C | 39.1°C | 22.8°C | 90 mm | 65% | 2.7 m/s | 5.9 |
| 1989 | 37.8°C | 31.3°C | 24.9°C | 40.0°C | 22.0°C | 4 mm | 53% | 2.6 m/s | 6.3 |
| 1988 | 37.6°C | 31.9°C | 26.2°C | 40.4°C | 24.6°C | 43 mm | 60% | 2.7 m/s | 6.2 |
| 1987 | 40.0°C | 33.2°C | 26.4°C | 42.8°C | 23.0°C | 0 mm | 40% | 3.1 m/s | 6.3 |
| 1986 | 39.1°C | 32.0°C | 24.9°C | 42.2°C | 23.4°C | 0 mm | 37% | 2.3 m/s | 6.5 |
| 1985 | 38.7°C | 31.8°C | 24.9°C | 41.3°C | 22.8°C | 5 mm | 42% | 3 m/s | 6.3 |
| 1984 | 35.8°C | 29.7°C | 23.5°C | 40.4°C | 21.5°C | 51 mm | 56% | 2.6 m/s | 5.9 |
| 1983 | 37.8°C | 31.7°C | 25.7°C | 41.3°C | 23.3°C | 24 mm | 55% | 2.3 m/s | — |
| 1982 | 37.7°C | 31.0°C | 24.2°C | 40.0°C | 21.3°C | 1 mm | 50% | 2.8 m/s | — |
| 1981 | 36.4°C | 30.9°C | 25.5°C | 40.8°C | 24.3°C | 60 mm | 62% | 2.4 m/s | — |
Actual recorded September data for each year, 1981–2025 — sourced from NASA POWER.
The average high in September is around 36.3°C with lows near 25°C (mean 30.7°C), based on 45 years of NASA POWER data.
September averages 60 mm of rainfall in Sanchor, a relatively wet time of year. The wettest on record was 240 mm in 2012.
The hottest September reached 43.2°C in 1999. The coldest dipped to 19.7°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average September temperatures have fallen by about 1.4°C — but days and nights have moved in opposite directions. Overnight lows rose from 24.8°C to 25.2°C while daytime highs eased from 37.3°C to 34.1°C, narrowing the gap between day and night.
September is one of the warmer months of the year in Sanchor and a relatively wet time of year, so plan for around 36.3°C daytime highs and 25°C at night.
Not quite — September is the 7th coolest month in Sanchor, averaging 30.7°C.
For September in Sanchor, pack light, breathable clothing and sun protection, with typical highs of 36.3°C and lows of 25°C. Bring an umbrella or light rain jacket too.
Relative humidity in September averages 59% — moderately humid.
Average wind speed in September is 2.5 m/s. The windiest September on record averaged 3.2 m/s (1991).
The wettest September on record was 2012 with 240 mm. On average, September sees 60 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 Sanchor behaves each September, 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 September specifically, along with year-by-year records and how the month has changed over the decades.
