August is one of the warmer months of the year in Delta, with average highs near 21.3°C and lows around 14.8°C (mean 18.1°C). It is one of the drier months, averaging 36 mm of rainfall and 76% relative humidity across the period.
August is one of the warmer months of the year in Delta. Across 45 years of records, the warmest August in Delta was 2022 — when the month averaged 20.1°C — while the coldest was 1995 at 15.9°C. Typical August days reach 21.3°C with nights near 14.8°C. The long-term trend is warming, about 0.3°C per decade.
August is one of the drier months in Delta, averaging 36 mm of rainfall. The wettest August on record was 1991 with 145 mm, while the driest was 1986 at 2 mm.
Relative humidity in Delta during August averages 76%. The most humid August was 2025 at 83%, and the least humid was 1985 at 71%.
August receives about 5.2 kWh/m²/day of solar energy in Delta. The sunniest August was 2005 at 6 kWh/m²/day, and the cloudiest were 1995, 2001 and 2008, among others at 4.6.
Average wind speed in Delta during August is 1 m/s. The windiest August was 2025 at 1.4 m/s, while the calmest were 2002, 2005 and 2014, among others at 0.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 17.3°C | 18.0°C | 17.8°C | 18.7°C | 18.5°C | +1.2°C |
| Avg High | 20.9°C | 21.1°C | 21.0°C | 21.9°C | 21.7°C | +0.8°C |
| Avg Low | 13.8°C | 14.8°C | 14.5°C | 15.5°C | 15.4°C | +1.6°C |
| Avg Rain | 25 mm | 44 mm | 38 mm | 26 mm | 51 mm | +25 mm |
August temperatures in Delta have risen by about 1.3°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 10.2°C (1987) to a record high of 32°C (1981).
Rainfall in August is one of the drier months, averaging 36 mm, with a wettest year of 145 mm.
One of the best times to visit Delta
August is one of the best times to visit Delta. Expect days averaging 21.3°C and nights around 14.8°C (mean 18.1°C) — warmer than Delta's yearly average — with moderate rainfall (36 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 | 20.3°C | 17.2°C | 14.2°C | 27.3°C | 11.8°C | 86 mm | 83% | 1.4 m/s | 5.1 |
| 2024 | 21.0°C | 17.9°C | 14.8°C | 26.5°C | 12.0°C | 100 mm | 80% | 1.1 m/s | 4.8 |
| 2023 | 22.4°C | 19.0°C | 15.6°C | 27.1°C | 12.3°C | 34 mm | 76% | 1 m/s | 5.2 |
| 2022 🔥 | 23.4°C | 20.1°C | 16.9°C | 30.6°C | 13.8°C | 14 mm | 77% | 1 m/s | 5.6 |
| 2021 | 22.0°C | 18.9°C | 15.8°C | 27.8°C | 12.7°C | 28 mm | 76% | 1.2 m/s | 4.9 |
| 2020 | 21.0°C | 18.0°C | 15.0°C | 27.1°C | 12.6°C | 42 mm | 76% | 1.1 m/s | 5.4 |
| 2019 | 22.0°C | 19.0°C | 15.9°C | 27.4°C | 13.6°C | 27 mm | 75% | 1 m/s | 5 |
| 2018 | 22.4°C | 19.1°C | 15.9°C | 28.9°C | 13.1°C | 12 mm | 73% | 1 m/s | 5.1 |
| 2017 | 23.0°C | 19.5°C | 16.1°C | 29.9°C | 13.6°C | 9 mm | 76% | 0.9 m/s | 5.7 |
| 2016 | 22.4°C | 19.2°C | 16.0°C | 31.0°C | 13.2°C | 15 mm | 75% | 1.1 m/s | 5.4 |
| 2015 | 22.0°C | 18.8°C | 15.6°C | 26.3°C | 13.0°C | 65 mm | 74% | 1.2 m/s | 5.1 |
| 2014 | 22.8°C | 19.5°C | 16.2°C | 29.0°C | 13.8°C | 27 mm | 75% | 0.8 m/s | 5.2 |
| 2013 | 21.5°C | 18.4°C | 15.2°C | 25.7°C | 13.2°C | 48 mm | 79% | 0.9 m/s | 4.7 |
| 2012 | 21.7°C | 18.4°C | 15.2°C | 27.2°C | 11.8°C | 7 mm | 75% | 0.9 m/s | 5.5 |
| 2011 | 20.7°C | 17.6°C | 14.5°C | 25.6°C | 12.5°C | 19 mm | 76% | 0.9 m/s | 5.5 |
| 2010 | 20.9°C | 17.7°C | 14.6°C | 28.0°C | 11.9°C | 32 mm | 75% | 1.1 m/s | 5.1 |
| 2009 | 20.7°C | 17.4°C | 14.1°C | 26.2°C | 12.1°C | 30 mm | 76% | 0.9 m/s | 5 |
| 2008 | 20.3°C | 17.2°C | 14.1°C | 26.5°C | 10.4°C | 87 mm | 77% | 1.1 m/s | 4.6 |
| 2007 | 20.4°C | 17.4°C | 14.5°C | 28.3°C | 13.2°C | 17 mm | 76% | 1 m/s | 4.9 |
| 2006 | 21.0°C | 17.6°C | 14.3°C | 24.9°C | 12.1°C | 6 mm | 74% | 0.9 m/s | 5.8 |
| 2005 | 21.7°C | 18.3°C | 14.8°C | 25.7°C | 12.7°C | 27 mm | 74% | 0.8 m/s | 6 |
| 2004 | 22.4°C | 19.0°C | 15.6°C | 28.2°C | 13.7°C | 84 mm | 76% | 0.9 m/s | 4.9 |
| 2003 | 22.2°C | 18.8°C | 15.3°C | 25.1°C | 12.1°C | 9 mm | 71% | 0.9 m/s | 5.6 |
| 2002 | 21.1°C | 17.6°C | 14.2°C | 26.0°C | 11.7°C | 10 mm | 74% | 0.8 m/s | 5.6 |
| 2001 | 20.5°C | 17.5°C | 14.6°C | 27.1°C | 11.7°C | 90 mm | 79% | 1.1 m/s | 4.6 |
| 2000 | 19.8°C | 16.7°C | 13.7°C | 25.4°C | 11.7°C | 21 mm | 78% | 1 m/s | 5.5 |
| 1999 | 20.7°C | 17.9°C | 15.1°C | 25.2°C | 11.2°C | 52 mm | 79% | 1 m/s | 4.9 |
| 1998 | 22.1°C | 18.8°C | 15.4°C | 27.7°C | 12.9°C | 9 mm | 75% | 1 m/s | 5.7 |
| 1997 | 22.1°C | 19.0°C | 15.8°C | 27.2°C | 13.6°C | 45 mm | 78% | 1 m/s | 5.4 |
| 1996 | 20.9°C | 17.6°C | 14.4°C | 27.4°C | 12.3°C | 21 mm | 77% | 1.1 m/s | 5 |
| 1995 ❄️ | 18.8°C | 15.9°C | 13.1°C | 24.8°C | 11.2°C | 59 mm | 78% | 1.2 m/s | 4.6 |
| 1994 | 21.6°C | 18.5°C | 15.3°C | 24.9°C | 13.5°C | 20 mm | 73% | 0.9 m/s | 5 |
| 1993 | 21.1°C | 17.9°C | 14.8°C | 29.9°C | 11.6°C | 23 mm | 75% | 1.1 m/s | 4.9 |
| 1992 | 21.4°C | 18.1°C | 14.8°C | 27.1°C | 12.0°C | 28 mm | 74% | 0.9 m/s | 5.4 |
| 1991 🌧️ | 20.7°C | 17.7°C | 14.7°C | 25.6°C | 11.7°C | 145 mm | 81% | 1 m/s | 4.9 |
| 1990 | 22.0°C | 18.4°C | 14.7°C | 28.2°C | 12.0°C | 41 mm | 74% | 0.9 m/s | 5.2 |
| 1989 | 20.3°C | 17.1°C | 13.9°C | 23.9°C | 12.2°C | 61 mm | 77% | 0.9 m/s | 4.8 |
| 1988 | 20.3°C | 16.7°C | 13.1°C | 25.6°C | 11.3°C | 28 mm | 75% | 0.8 m/s | 4.8 |
| 1987 | 20.9°C | 17.0°C | 13.1°C | 26.6°C | 10.2°C | 14 mm | 73% | 0.8 m/s | 5.4 |
| 1986 | 22.5°C | 18.6°C | 14.7°C | 26.6°C | 11.9°C | 2 mm | 75% | 0.8 m/s | 5.7 |
| 1985 | 20.5°C | 16.7°C | 12.9°C | 25.6°C | 10.7°C | 19 mm | 71% | 0.9 m/s | 5.2 |
| 1984 | 19.9°C | 16.5°C | 13.1°C | 24.1°C | 10.8°C | 24 mm | 75% | 1 m/s | 4.6 |
| 1983 | 21.0°C | 17.4°C | 13.8°C | 24.4°C | 12.2°C | 27 mm | 75% | 0.9 m/s | — |
| 1982 | 20.0°C | 16.8°C | 13.5°C | 25.6°C | 10.7°C | 32 mm | 75% | 0.9 m/s | — |
| 1981 | 22.9°C | 19.3°C | 15.8°C | 32.0°C | 12.5°C | 21 mm | 72% | 0.8 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 21.3°C with lows near 14.8°C (mean 18.1°C), based on 45 years of NASA POWER data.
August averages 36 mm of rainfall in Delta, one of the drier months. The wettest on record was 145 mm in 1991.
The hottest August reached 32°C in 1981. The coldest dipped to 10.2°C in 1987.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.3°C. Daytime highs moved from 20.9°C to 21.8°C and overnight lows from 13.8°C to 15.5°C over the same span.
August is one of the warmer months of the year in Delta and one of the drier months, so plan for around 21.3°C daytime highs and 14.8°C at night.
Not quite — August is the 12th coolest month in Delta, averaging 18.1°C.
For August in Delta, pack light layers you can adjust through the day, with typical highs of 21.3°C and lows of 14.8°C.
Relative humidity in August averages 76% — quite humid.
Average wind speed in August is 1 m/s. The windiest August on record averaged 1.4 m/s (2025).
The wettest August on record was 1991 with 145 mm. On average, August sees 36 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 Delta 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.
