Ashton Weather in August (1981–2025)

📍 44.03°S, 171.77°E •
📊

August at a Glance in Ashton

(1981–2025)
Avg High
🔥
10.7°C
Avg Low
❄️
5.2°C
Avg Temp
🌡️
8.0°C
Avg Rain
🌧️
65 mm
Avg Humidity
💧
83%
Avg Wind
🌬️
3.1 m/s
Avg Solar
☀️
2.3
kWh/m²/day
vs Annual
📈
-4.1°C
temp difference
❄️Cool afternoons❄️Cold mornings☁️Cloudier skies🌧️Wet month💨Breezy💦Humid air

Ashton August Weather Overview

August is one of the cooler months of the year in Ashton, with average highs near 10.7°C and lows around 5.2°C (mean 8°C). It is about average for rainfall, averaging 65 mm of rainfall and 83% relative humidity across the period.

Ashton August Temperature History (1981–2025)

Range

August is one of the cooler months of the year in Ashton. Across 45 years of records, the warmest August in Ashton was 2013 — when the month averaged 9.5°C — while the coldest was 1992 at 6.4°C. Typical August days reach 10.7°C with nights near 5.2°C. The long-term trend is warming, about 0.2°C per decade.

1981–1985 vs 2021–2025

Avg Temp7.8°C→8.4°C+0.6°C
Max Temp10.6°C→11.2°C+0.6°C
Min Temp5.0°C→5.5°C+0.5°C

Trend (per decade)

Avg Temp+0.2°C/decade ↗
Max Temp+0.2°C/decade ↗
Min Temp+0.2°C/decade ↗

Distribution of Avg Temp

6.0°C–7.0°C4 yr (9%)
7.0°C–8.0°C18 yr (40%)
8.0°C–9.0°C17 yr (38%)
9.0°C–10.0°C6 yr (13%)

Ashton August Rainfall History (1981–2025)

Range

August is about average for rainfall in Ashton, averaging 65 mm of rainfall. The wettest August on record was 1992 with 197 mm, while the driest was 2014 at 26 mm.

Ashton August Humidity History (1981–2025)

Range

Relative humidity in Ashton during August averages 83%. The most humid August was 2012 at 89%, and the least humid was 1998 at 79%.

Ashton August Solar History (1981–2025)

Range

August receives about 2.3 kWh/m²/day of solar energy in Ashton. The sunniest August was 2025 at 2.7 kWh/m²/day, and the cloudiest were 1992, 2010 and 2012 at 2.

Ashton August Wind History (1981–2025)

Range

Average wind speed in Ashton during August is 3.1 m/s. The windiest Augusts were 1992 and 2004 at 4 m/s, while the calmest was 1987 at 2.3 m/s.

What August Feels Like in Ashton

🌅
Cold
Morning
🌞
Cool
Afternoon
🌆
Cold
Evening
Rain chanceModerate
Outdoor comfort★★★☆☆

How August Ranks in Ashton

🥶2nd coolest month of the year
🌧️6th wettest month of the year
☀️9th sunniest month of the year

Ranked against the other 11 months using 1981–2025 averages.

Explore Ashton Weather by Month

Ashton August Averages by Decade

Metric1980s1990s2000s2010s2020sChange
Avg Temp7.8°C7.5°C8.0°C8.2°C8.5°C+0.7°C
Avg High10.6°C10.2°C10.8°C10.9°C11.4°C+0.8°C
Avg Low5.1°C4.7°C5.2°C5.5°C5.7°C+0.6°C
Avg Rain67 mm86 mm57 mm62 mm45 mm-23 mm

Extreme August Records in Ashton

🔥Warmest August17.5°C2006
🧊Coldest August0.9°C2010
🌧️Wettest August197 mm1992
🏜️Driest August26 mm2014
🌬️Windiest August4 m/s1992

Key Insights for August

✅

August temperatures in Ashton have risen by about 0.6°C between 1981–1985 and 2021–2025.

✅

August has ranged from a record low of 0.9°C (2010) to a record high of 17.5°C (2006).

✅

Rainfall in August is about average for rainfall, averaging 65 mm, with a wettest year of 197 mm.

Is August a Good Time to Visit Ashton?

A quieter season to visit Ashton

If your dates are flexible, the more temperate months of February and January tend to be the most comfortable for visiting Ashton. That said, August — with days averaging 10.7°C and nights around 5.2°C (mean 8°C) and moderate rainfall (65 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.

See Ashton's complete weather history All 12 months side by side, 1981–2025 records, annual trends and long-term averages in one place. View full history →

Ashton Weather in August — In Depth

☀️ August climate overview

August is one of the cooler months of the year in Ashton, with average highs near 10.7°C and lows around 5.2°C (mean 8°C). It is about average for rainfall, averaging 65 mm of rainfall and 83% relative humidity across the period.

🌧️ Rain, humidity & wind in August

August averages 65 mm of rainfall in Ashton, about average for rainfall compared with the rest of the year. The wettest August on record saw 197 mm (1992), and the driest just 26 mm (2014). Humidity sits around 83% and average wind speed is 3.1 m/s, with solar radiation averaging 2.3 kWh/m²/day.

📈 How August has changed

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 10.6°C to 11.2°C and overnight lows from 5°C to 5.5°C over the same span.
August Weather in Ashton, Year by Year
🔥 warmest❄️ coldest🌧️ wettest
YearAvg HighAvg TempAvg LowHottest DayColdest DayRainfallHumidityWindSolar
202510.7°C8.0°C5.3°C15.3°C3.6°C32 mm83%2.9 m/s2.7
202411.8°C8.7°C5.5°C17.4°C1.8°C62 mm81%2.9 m/s2.4
202311.0°C8.0°C5.0°C15.7°C3.2°C29 mm81%3.2 m/s2.5
202211.1°C8.6°C6.0°C16.1°C2.3°C62 mm85%2.7 m/s2.3
202111.3°C8.5°C5.8°C16.0°C2.2°C56 mm83%3.4 m/s2.3
202012.4°C9.4°C6.5°C16.3°C3.4°C27 mm82%2.8 m/s2.3
201911.4°C8.2°C4.9°C15.8°C2.7°C58 mm79%3.2 m/s2.5
201811.3°C8.7°C6.0°C15.4°C4.6°C38 mm85%2.6 m/s2.3
201711.7°C9.0°C6.3°C15.5°C2.9°C55 mm84%2.9 m/s2.3
201610.1°C7.4°C4.6°C15.2°C1.5°C44 mm83%2.7 m/s2.5
201510.0°C7.2°C4.4°C14.6°C2.2°C72 mm85%2.9 m/s2.3
201410.7°C7.9°C5.1°C16.3°C2.0°C26 mm82%3.1 m/s2.6
2013 🔥12.1°C9.5°C6.9°C15.6°C4.2°C47 mm86%3.1 m/s2.3
201211.0°C8.6°C6.2°C16.1°C3.9°C123 mm89%3 m/s2
201110.6°C7.6°C4.6°C16.2°C0.9°C41 mm82%3 m/s2.5
201010.2°C7.9°C5.7°C14.7°C0.9°C116 mm88%3.3 m/s2
200912.2°C9.1°C6.1°C14.9°C3.5°C69 mm82%2.8 m/s2.3
20089.5°C7.0°C4.6°C13.2°C1.6°C63 mm84%3 m/s2.3
200710.7°C7.7°C4.8°C16.1°C1.1°C43 mm82%2.6 m/s2.4
200610.3°C7.5°C4.7°C17.5°C2.0°C53 mm83%3 m/s2.4
200512.3°C9.2°C6.0°C16.3°C2.7°C26 mm81%2.5 m/s2.3
20048.8°C6.5°C4.1°C14.2°C1.2°C83 mm83%4 m/s2.3
200310.5°C7.8°C5.1°C15.3°C3.3°C48 mm84%3.1 m/s2.2
200211.6°C8.4°C5.3°C16.1°C2.1°C34 mm79%3.7 m/s2.3
200111.7°C8.7°C5.6°C15.4°C1.6°C36 mm81%3 m/s2.3
200010.6°C8.0°C5.4°C15.7°C1.7°C114 mm81%3.2 m/s2.1
199910.6°C7.8°C5.0°C17.0°C2.8°C32 mm82%3 m/s2.1
199810.4°C7.5°C4.6°C14.3°C1.2°C40 mm79%3.1 m/s2.2
199710.2°C7.5°C4.8°C15.5°C1.9°C47 mm81%3.6 m/s2.2
19969.7°C7.0°C4.2°C13.5°C1.8°C55 mm81%3.1 m/s2.2
19959.7°C7.0°C4.3°C14.3°C2.4°C123 mm83%3.2 m/s2.5
199411.5°C8.2°C4.9°C17.0°C1.8°C112 mm80%2.8 m/s2.6
199310.1°C7.1°C4.1°C14.8°C1.2°C37 mm80%3.1 m/s2.6
1992 ❄️ 🌧️8.8°C6.4°C4.0°C12.7°C1.9°C197 mm84%4 m/s2
199111.1°C8.2°C5.4°C13.6°C2.8°C83 mm82%3.5 m/s2.3
199010.1°C7.8°C5.5°C14.0°C3.2°C134 mm84%3.4 m/s2.1
198910.4°C8.0°C5.7°C14.1°C3.1°C59 mm87%3.1 m/s2.3
198811.0°C7.8°C4.6°C14.7°C1.9°C68 mm80%3.3 m/s2.4
198711.9°C9.0°C6.1°C14.2°C3.3°C52 mm86%2.3 m/s2.3
19868.8°C6.6°C4.4°C14.3°C2.6°C97 mm85%3.2 m/s2.4
198510.8°C8.0°C5.1°C15.8°C3.2°C74 mm81%3.3 m/s2.6
198411.0°C8.2°C5.5°C14.9°C1.5°C50 mm85%3.6 m/s2.5
198310.6°C7.7°C4.8°C14.9°C3.3°C61 mm84%2.8 m/s—
198212.0°C8.4°C4.9°C15.5°C2.1°C54 mm80%2.9 m/s—
19818.8°C6.7°C4.6°C12.5°C2.4°C92 mm85%3 m/s—

Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.

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Ashton August Weather — FAQ

What is the average temperature in Ashton in August?▼

The average high in August is around 10.7°C with lows near 5.2°C (mean 8°C), based on 45 years of NASA POWER data.

Does it rain a lot in Ashton in August?▼

August averages 65 mm of rainfall in Ashton, about average for rainfall. The wettest on record was 197 mm in 1992.

What was the hottest August on record in Ashton?▼

The hottest August reached 17.5°C in 2006. The coldest dipped to 0.9°C in 2010.

Has August in Ashton gotten warmer over time?▼

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 10.6°C to 11.2°C and overnight lows from 5°C to 5.5°C over the same span.

Is August a good time to visit Ashton?▼

August is one of the cooler months of the year in Ashton and about average for rainfall, so plan for around 10.7°C daytime highs and 5.2°C at night.

Is August the coldest month in Ashton?▼

Not quite — August is the 2nd coolest month in Ashton, averaging 8°C.

What should I pack for Ashton in August?▼

For August in Ashton, pack warm layers and a jacket for chilly mornings, with typical highs of 10.7°C and lows of 5.2°C. Bring an umbrella or light rain jacket too.

Is Ashton humid in August?▼

Relative humidity in August averages 83% — quite humid.

How windy is Ashton in August?▼

Average wind speed in August is 3.1 m/s. The windiest August on record averaged 4 m/s (1992).

Which August had the most rainfall in Ashton?▼

The wettest August on record was 1992 with 197 mm. On average, August sees 65 mm.

Where does this August weather data come from?▼

All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.

Other Canterbury cities

Explore how the weather in Ashton 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.