August is one of the warmer months of the year in Lancaster, with average highs near 29.2°C and lows around 17.8°C (mean 23.5°C). It is about average for rainfall, averaging 101 mm of rainfall and 70% relative humidity across the period.
August is one of the warmer months of the year in Lancaster. Across 45 years of records, the warmest August in Lancaster was 2002 — when the month averaged 25.8°C — while the coldest was 1994 at 21.1°C. Typical August days reach 29.2°C with nights near 17.8°C. The long-term trend is warming, about 0.3°C per decade.
August is about average for rainfall in Lancaster, averaging 101 mm of rainfall. The wettest August on record was 2011 with 258 mm, while the driest was 1995 at 36 mm.
Relative humidity in Lancaster during August averages 70%. The most humid August was 2018 at 84%, and the least humid was 2002 at 57%.
August receives about 5.2 kWh/m²/day of solar energy in Lancaster. The sunniest August was 2015 at 5.8 kWh/m²/day, and the cloudiest was 1990 at 4.7.
Average wind speed in Lancaster during August is 0.9 m/s. The windiest Augusts were 2010, 2011 and 2023, among others at 1 m/s, while the calmest were 1996 and 2009 at 0.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.9°C | 23.1°C | 23.8°C | 23.5°C | 24.4°C | +1.5°C |
| Avg High | 28.8°C | 29.2°C | 29.4°C | 29.0°C | 30.0°C | +1.2°C |
| Avg Low | 17.0°C | 17.1°C | 18.3°C | 18.0°C | 18.7°C | +1.7°C |
| Avg Rain | 80 mm | 99 mm | 97 mm | 120 mm | 113 mm | +33 mm |
August temperatures in Lancaster have risen by about 1.7°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 6.2°C (1982) to a record high of 38.3°C (2002).
Rainfall in August is about average for rainfall, averaging 101 mm, with a wettest year of 258 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.2°C per decade while lows rose 0.4°C per decade, narrowing the gap between day and night.
One of the best times to visit Lancaster
August is one of the best times to visit Lancaster. Expect days averaging 29.2°C and nights around 17.8°C (mean 23.5°C) — warmer than Lancaster's yearly average — with higher rainfall (101 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 | 29.1°C | 22.8°C | 16.5°C | 34.4°C | 10.1°C | 43 mm | 63% | 0.9 m/s | 5.4 |
| 2024 | 29.6°C | 23.9°C | 18.2°C | 36.5°C | 11.3°C | 144 mm | 73% | 0.9 m/s | 5 |
| 2023 | 29.7°C | 24.0°C | 18.4°C | 33.3°C | 14.0°C | 74 mm | 67% | 1 m/s | 5.2 |
| 2022 | 31.9°C | 25.7°C | 19.6°C | 36.7°C | 14.1°C | 83 mm | 63% | 0.9 m/s | 5.7 |
| 2021 | 30.8°C | 25.5°C | 20.1°C | 36.6°C | 15.2°C | 148 mm | 73% | 0.8 m/s | 4.9 |
| 2020 | 29.1°C | 24.2°C | 19.3°C | 33.4°C | 14.5°C | 188 mm | 77% | 0.9 m/s | 5.3 |
| 2019 | 29.8°C | 24.2°C | 18.5°C | 34.0°C | 13.8°C | 79 mm | 70% | 0.8 m/s | 5.4 |
| 2018 | 28.1°C | 23.8°C | 19.4°C | 32.7°C | 13.7°C | 218 mm | 84% | 0.9 m/s | 5 |
| 2017 | 26.9°C | 21.8°C | 16.7°C | 31.3°C | 11.6°C | 135 mm | 76% | 0.8 m/s | 5.2 |
| 2016 | 31.4°C | 25.6°C | 19.9°C | 35.1°C | 13.9°C | 67 mm | 69% | 0.9 m/s | 5.6 |
| 2015 | 30.1°C | 23.8°C | 17.5°C | 34.9°C | 13.5°C | 68 mm | 63% | 0.9 m/s | 5.8 |
| 2014 | 27.8°C | 21.9°C | 16.0°C | 33.2°C | 10.9°C | 83 mm | 71% | 0.8 m/s | 5.2 |
| 2013 | 27.4°C | 22.2°C | 17.0°C | 32.1°C | 10.5°C | 119 mm | 76% | 0.8 m/s | 5 |
| 2012 | 29.6°C | 24.2°C | 18.8°C | 33.6°C | 13.9°C | 98 mm | 69% | 0.8 m/s | 5.4 |
| 2011 🌧️ | 28.3°C | 23.1°C | 17.9°C | 33.0°C | 11.5°C | 258 mm | 74% | 1 m/s | 4.9 |
| 2010 | 30.5°C | 24.6°C | 18.6°C | 36.1°C | 12.9°C | 72 mm | 65% | 1 m/s | 4.9 |
| 2009 | 28.1°C | 23.5°C | 18.8°C | 32.1°C | 13.1°C | 181 mm | 80% | 0.7 m/s | 5.2 |
| 2008 | 28.7°C | 22.4°C | 16.2°C | 32.4°C | 11.9°C | 51 mm | 65% | 0.9 m/s | 5.7 |
| 2007 | 30.1°C | 24.3°C | 18.5°C | 35.2°C | 13.5°C | 119 mm | 69% | 0.9 m/s | 5.1 |
| 2006 | 30.0°C | 24.2°C | 18.4°C | 35.3°C | 12.1°C | 56 mm | 67% | 0.9 m/s | 5.5 |
| 2005 | 31.1°C | 25.5°C | 19.9°C | 37.0°C | 13.8°C | 58 mm | 67% | 0.9 m/s | 4.9 |
| 2004 | 26.7°C | 21.8°C | 16.9°C | 30.6°C | 11.4°C | 136 mm | 82% | 0.9 m/s | 5 |
| 2003 | 27.8°C | 23.4°C | 18.9°C | 30.2°C | 11.5°C | 129 mm | 83% | 0.8 m/s | 4.9 |
| 2002 🔥 | 32.2°C | 25.8°C | 19.3°C | 38.3°C | 13.7°C | 66 mm | 57% | 1 m/s | 5.4 |
| 2001 | 31.4°C | 25.2°C | 19.0°C | 37.9°C | 15.0°C | 93 mm | 65% | 0.9 m/s | 5.1 |
| 2000 | 27.8°C | 22.4°C | 17.0°C | 32.6°C | 9.9°C | 83 mm | 71% | 1 m/s | 4.8 |
| 1999 | 30.4°C | 24.1°C | 17.7°C | 35.7°C | 11.9°C | 103 mm | 59% | 1 m/s | 5.3 |
| 1998 | 30.2°C | 24.0°C | 17.7°C | 33.6°C | 10.1°C | 80 mm | 66% | 0.9 m/s | 5.3 |
| 1997 | 28.4°C | 22.4°C | 16.4°C | 35.1°C | 11.6°C | 103 mm | 64% | 0.9 m/s | 5.2 |
| 1996 | 27.0°C | 21.8°C | 16.6°C | 31.0°C | 12.9°C | 86 mm | 78% | 0.7 m/s | 5.5 |
| 1995 | 32.3°C | 25.2°C | 18.1°C | 36.2°C | 13.4°C | 36 mm | 58% | 0.9 m/s | 5.5 |
| 1994 ❄️ | 26.5°C | 21.1°C | 15.6°C | 32.4°C | 9.1°C | 145 mm | 78% | 0.9 m/s | 4.8 |
| 1993 | 30.6°C | 24.3°C | 18.1°C | 35.2°C | 11.9°C | 89 mm | 65% | 0.8 m/s | 5.2 |
| 1992 | 27.7°C | 21.7°C | 15.6°C | 32.9°C | 10.6°C | 69 mm | 68% | 1 m/s | 5.4 |
| 1991 | 30.8°C | 24.5°C | 18.3°C | 37.2°C | 14.7°C | 100 mm | 63% | 0.9 m/s | 5.4 |
| 1990 | 27.6°C | 22.2°C | 16.9°C | 32.6°C | 13.0°C | 174 mm | 76% | 0.9 m/s | 4.7 |
| 1989 | 26.8°C | 21.9°C | 17.0°C | 30.7°C | 10.8°C | 61 mm | 79% | 0.9 m/s | 4.9 |
| 1988 | 30.8°C | 24.6°C | 18.4°C | 37.0°C | 10.4°C | 94 mm | 64% | 1 m/s | 5.2 |
| 1987 | 30.3°C | 23.9°C | 17.4°C | 35.8°C | 10.5°C | 78 mm | 62% | 1 m/s | 4.9 |
| 1986 | 27.5°C | 21.9°C | 16.3°C | 32.0°C | 7.0°C | 130 mm | 70% | 1 m/s | 5.4 |
| 1985 | 28.2°C | 22.7°C | 17.1°C | 34.7°C | 13.4°C | 75 mm | 68% | 0.9 m/s | 5.1 |
| 1984 | 27.2°C | 22.2°C | 17.1°C | 29.6°C | 8.7°C | 82 mm | 80% | 0.8 m/s | 5.6 |
| 1983 | 31.4°C | 24.8°C | 18.2°C | 37.8°C | 10.7°C | 69 mm | 63% | 0.9 m/s | — |
| 1982 | 27.9°C | 21.5°C | 15.2°C | 32.6°C | 6.2°C | 64 mm | 64% | 0.9 m/s | — |
| 1981 | 29.1°C | 22.5°C | 15.9°C | 31.9°C | 9.7°C | 68 mm | 64% | 0.9 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 29.2°C with lows near 17.8°C (mean 23.5°C), based on 45 years of NASA POWER data.
August averages 101 mm of rainfall in Lancaster, about average for rainfall. The wettest on record was 258 mm in 2011.
The hottest August reached 38.3°C in 2002. The coldest dipped to 6.2°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.7°C. Daytime highs moved from 28.8°C to 30.2°C and overnight lows from 16.7°C to 18.6°C over the same span.
August is one of the warmer months of the year in Lancaster and about average for rainfall, so plan for around 29.2°C daytime highs and 17.8°C at night.
Not quite — August is the 11th coolest month in Lancaster, averaging 23.5°C.
For August in Lancaster, pack light layers you can adjust through the day, with typical highs of 29.2°C and lows of 17.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in August averages 70% — moderately humid.
Average wind speed in August is 0.9 m/s. The windiest August on record averaged 1 m/s (1986).
The wettest August on record was 2011 with 258 mm. On average, August sees 101 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 Lancaster behaves each August, 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 August specifically, along with year-by-year records and how the month has changed over the decades.
