August is one of the cooler months of the year in Dunedin, with average highs near 9.6°C and lows around 6.4°C (mean 8°C). It is one of the drier months, averaging 44 mm of rainfall and 84% relative humidity across the period.
August is one of the cooler months of the year in Dunedin. Across 45 years of records, the warmest August in Dunedin was 2013 — when the month averaged 9.5°C — while the coldest was 1992 at 6.4°C. Typical August days reach 9.6°C with nights near 6.4°C. The long-term trend is warming, about 0.2°C per decade.
August is one of the drier months in Dunedin, averaging 44 mm of rainfall. The wettest August on record was 1992 with 94 mm, while the driest was 2020 at 21 mm.
Relative humidity in Dunedin during August averages 84%. The most humid August was 2012 at 88%, and the least humid was 1998 at 80%.
August receives about 2.2 kWh/m²/day of solar energy in Dunedin. The sunniest Augusts were 1993, 2014 and 2025 at 2.4 kWh/m²/day, and the cloudiest was 1992 at 1.9.
Average wind speed in Dunedin during August is 5.2 m/s. The windiest August was 1992 at 6.4 m/s, while the calmest were 1989 and 2018 at 4.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 7.9°C | 7.5°C | 7.9°C | 8.3°C | 8.6°C | +0.7°C |
| Avg High | 9.5°C | 9.2°C | 9.5°C | 9.9°C | 10.4°C | +0.9°C |
| Avg Low | 6.3°C | 5.9°C | 6.3°C | 6.7°C | 6.9°C | +0.6°C |
| Avg Rain | 42 mm | 51 mm | 52 mm | 38 mm | 28 mm | -14 mm |
August temperatures in Dunedin have risen by about 0.6°C between 1981–1985 and 2021–2025.
August has ranged from a record low of 1.5°C (2016) to a record high of 15.4°C (2014).
Rainfall in August is one of the drier months, averaging 44 mm, with a wettest year of 94 mm.
A quieter season to visit Dunedin
If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Dunedin. That said, August — with days averaging 9.6°C and nights around 6.4°C (mean 8°C) and moderate rainfall (44 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 10.4°C | 8.5°C | 6.6°C | 14.3°C | 5.0°C | 24 mm | 81% | 4.6 m/s | 2.4 |
| 2024 | 10.5°C | 8.7°C | 6.9°C | 14.3°C | 4.2°C | 41 mm | 82% | 4.5 m/s | 2.3 |
| 2023 | 10.1°C | 8.3°C | 6.6°C | 13.8°C | 5.0°C | 27 mm | 83% | 5.2 m/s | 2.2 |
| 2022 | 10.5°C | 8.7°C | 7.0°C | 13.7°C | 2.7°C | 27 mm | 84% | 4.4 m/s | 2.2 |
| 2021 | 10.3°C | 8.6°C | 6.9°C | 15.3°C | 3.9°C | 30 mm | 83% | 5.3 m/s | 2.1 |
| 2020 | 10.7°C | 9.0°C | 7.3°C | 14.8°C | 4.6°C | 21 mm | 84% | 5 m/s | 2.2 |
| 2019 | 10.0°C | 8.1°C | 6.3°C | 13.7°C | 3.9°C | 39 mm | 81% | 5.8 m/s | 2.2 |
| 2018 | 10.4°C | 8.9°C | 7.4°C | 13.8°C | 5.7°C | 30 mm | 86% | 4.1 m/s | 2 |
| 2017 | 10.4°C | 8.9°C | 7.4°C | 14.2°C | 4.9°C | 25 mm | 84% | 4.2 m/s | 2.2 |
| 2016 | 9.5°C | 7.7°C | 6.0°C | 13.2°C | 1.5°C | 27 mm | 82% | 4.5 m/s | 2.3 |
| 2015 | 8.8°C | 7.2°C | 5.6°C | 12.7°C | 4.1°C | 55 mm | 85% | 4.8 m/s | 2.2 |
| 2014 | 9.9°C | 8.1°C | 6.3°C | 15.4°C | 3.0°C | 33 mm | 83% | 5.3 m/s | 2.4 |
| 2013 🔥 | 11.0°C | 9.5°C | 8.0°C | 13.6°C | 5.9°C | 25 mm | 86% | 4.9 m/s | 2.2 |
| 2012 | 9.9°C | 8.7°C | 7.4°C | 13.9°C | 4.8°C | 48 mm | 88% | 4.7 m/s | 2 |
| 2011 | 9.3°C | 7.6°C | 5.9°C | 12.9°C | 2.3°C | 41 mm | 83% | 5.3 m/s | 2.2 |
| 2010 | 9.3°C | 7.9°C | 6.6°C | 12.2°C | 4.6°C | 60 mm | 88% | 4.9 m/s | 2 |
| 2009 | 10.5°C | 8.8°C | 7.1°C | 13.4°C | 4.9°C | 33 mm | 85% | 4.5 m/s | 2 |
| 2008 | 8.6°C | 7.1°C | 5.7°C | 10.8°C | 3.6°C | 48 mm | 83% | 5 m/s | 2.2 |
| 2007 | 9.4°C | 7.7°C | 6.1°C | 14.3°C | 3.3°C | 28 mm | 84% | 5.3 m/s | 2.2 |
| 2006 | 9.3°C | 7.7°C | 6.0°C | 14.5°C | 3.7°C | 74 mm | 81% | 4.9 m/s | 2.3 |
| 2005 | 10.9°C | 8.9°C | 6.9°C | 14.0°C | 4.4°C | 68 mm | 84% | 4.4 m/s | 2.2 |
| 2004 | 7.8°C | 6.6°C | 5.4°C | 11.8°C | 3.4°C | 74 mm | 85% | 5.9 m/s | 2.1 |
| 2003 | 9.3°C | 7.7°C | 6.2°C | 11.8°C | 3.9°C | 64 mm | 84% | 5 m/s | 2.1 |
| 2002 | 9.9°C | 8.2°C | 6.4°C | 13.0°C | 3.6°C | 36 mm | 84% | 6.3 m/s | 2 |
| 2001 | 10.1°C | 8.5°C | 6.9°C | 14.4°C | 3.9°C | 31 mm | 85% | 4.9 m/s | 2 |
| 2000 | 9.3°C | 7.9°C | 6.6°C | 13.9°C | 4.8°C | 64 mm | 83% | 5.8 m/s | 2 |
| 1999 | 9.5°C | 7.8°C | 6.2°C | 13.8°C | 4.8°C | 33 mm | 83% | 5.5 m/s | 2.1 |
| 1998 | 9.6°C | 7.6°C | 5.7°C | 12.5°C | 3.3°C | 32 mm | 80% | 6 m/s | 2.1 |
| 1997 | 9.1°C | 7.6°C | 6.0°C | 13.0°C | 4.0°C | 40 mm | 82% | 5.6 m/s | 2.1 |
| 1996 | 8.8°C | 7.2°C | 5.6°C | 11.6°C | 3.6°C | 55 mm | 83% | 5.1 m/s | 2.1 |
| 1995 | 8.8°C | 7.2°C | 5.5°C | 11.8°C | 4.1°C | 38 mm | 82% | 6.1 m/s | 2.3 |
| 1994 | 9.8°C | 8.0°C | 6.2°C | 12.4°C | 3.6°C | 34 mm | 83% | 5.6 m/s | 2.3 |
| 1993 | 9.4°C | 7.6°C | 5.8°C | 13.3°C | 3.8°C | 47 mm | 82% | 5.4 m/s | 2.4 |
| 1992 ❄️ 🌧️ | 7.8°C | 6.4°C | 5.0°C | 12.7°C | 3.5°C | 94 mm | 83% | 6.4 m/s | 1.9 |
| 1991 | 9.7°C | 8.0°C | 6.3°C | 12.1°C | 4.4°C | 77 mm | 85% | 5.7 m/s | 2 |
| 1990 | 9.3°C | 7.8°C | 6.3°C | 11.9°C | 3.9°C | 57 mm | 84% | 5.4 m/s | 2.1 |
| 1989 | 9.5°C | 8.1°C | 6.6°C | 13.6°C | 3.8°C | 32 mm | 87% | 4.1 m/s | 2.3 |
| 1988 | 9.4°C | 7.5°C | 5.6°C | 12.7°C | 3.3°C | 38 mm | 82% | 5.9 m/s | 2.2 |
| 1987 | 10.2°C | 8.6°C | 6.9°C | 12.5°C | 4.4°C | 32 mm | 86% | 4.4 m/s | 2.1 |
| 1986 | 8.4°C | 7.1°C | 5.8°C | 11.1°C | 4.4°C | 48 mm | 84% | 5.1 m/s | 2.3 |
| 1985 | 10.0°C | 8.3°C | 6.6°C | 13.3°C | 3.7°C | 43 mm | 83% | 5.6 m/s | 2.3 |
| 1984 | 9.4°C | 8.1°C | 6.7°C | 12.2°C | 3.6°C | 40 mm | 85% | 6.2 m/s | 2.2 |
| 1983 | 9.6°C | 8.0°C | 6.3°C | 12.6°C | 4.6°C | 45 mm | 84% | 5.2 m/s | — |
| 1982 | 10.8°C | 8.6°C | 6.4°C | 13.6°C | 4.3°C | 51 mm | 80% | 5.8 m/s | — |
| 1981 | 8.4°C | 7.2°C | 5.9°C | 11.2°C | 4.7°C | 48 mm | 83% | 5.1 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 9.6°C with lows near 6.4°C (mean 8°C), based on 45 years of NASA POWER data.
August averages 44 mm of rainfall in Dunedin, one of the drier months. The wettest on record was 94 mm in 1992.
The hottest August reached 15.4°C in 2014. The coldest dipped to 1.5°C in 2016.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 0.6°C. Daytime highs moved from 9.6°C to 10.4°C and overnight lows from 6.4°C to 6.8°C over the same span.
August is one of the cooler months of the year in Dunedin and one of the drier months, so plan for around 9.6°C daytime highs and 6.4°C at night.
Not quite — August is the 2nd coolest month in Dunedin, averaging 8°C.
For August in Dunedin, pack warm layers and a jacket for chilly mornings, with typical highs of 9.6°C and lows of 6.4°C.
Relative humidity in August averages 84% — quite humid.
Average wind speed in August is 5.2 m/s. The windiest August on record averaged 6.4 m/s (1992).
The wettest August on record was 1992 with 94 mm. On average, August sees 44 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 Dunedin 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.
