Avg High
Hamilton in August
Avg Low
Rain
Daylight
11h
What to expect
August in Hamilton is late winter, with a settled seasonal pattern already in place. The overall feel is cool without being harsh, with a noticeable cool-down after sunset. Most days feel close to what the averages suggest, with straightforward pacing. The daylight window is balanced for full days without endless late evenings.
August in context
How it compares to the rest of the year in Hamilton.
Hottest (avg)
#11 / 12
Wettest (avg)
#3 / 12
Daylight Hours
#9 / 12
Windiest (avg)
#6 / 12
Highest UV
#9 / 12
Most Humid
#4 / 12
Monthly climate breakdown
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight hours
- 10.7 h
- UV index (max)
- 5
- Typical sun hours
- 08:01 - 18:43
Rain & Snow
- Total rain
-
- Rainy days
- 17 days
- Cloud cover (avg)
- 60%
Humidity & Wind
- Humidity (avg)
- 84%
- Wind (avg)
-
- Wind (max gusts)
-
Daily climate explorer
Day 15 selected for August. Typical high 13.4°C and low 4.7°C.
Typical disruptions in August
Based on 30 years of historical data, these are the disruption patterns most likely to affect plans in August.
Cold High impact
Cold feels-like nights Measures: Cold feels-like nights (min <=5C). Observed about 69% of days (21.3 days/month) in August. Historical risk signal only, not a day-by-day forecast.
21.3 days / month
~69% of days
Why this matters
- Expected days 21.3 days / month
- Probability ~69% of days
- Intensity Up to ~5°C (P95)
Cold feels-like nights are possible on ~21 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Rain High impact
Rain disruption Measures: Likely rain disruption days. Observed about 26% of days (8.2 days/month) in August. Historical risk signal only, not a day-by-day forecast.
8.2 days / month
~26% of days
Why this matters
- Expected days 8.2 days / month
- Probability ~26% of days
- Intensity Up to ~27mm (P95)
Rain disruption risk appears on ~8 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Washout risk Measures: Washout day risk. Observed about 26% of days (8.1 days/month) in August. Historical risk signal only, not a day-by-day forecast.
8.1 days / month
~26% of days
Why this matters
- Expected days 8.1 days / month
- Probability ~26% of days
- Intensity Up to ~27mm (P95)
Washout conditions are possible on ~8 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Heavy rain days Measures: Heavy rain days (>=10mm). Observed about 12% of days (3.6 days/month) in August. Historical risk signal only, not a day-by-day forecast.
3.6 days / month
~12% of days
Why this matters
- Expected days 3.6 days / month
- Probability ~12% of days
- Intensity Up to ~36mm (P95)
Heavy rain is possible on ~4 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Wind High impact
Strong gusts Measures: Strong gust days (>=60 km/h). Observed about 10% of days (3.2 days/month) in August. Historical risk signal only, not a day-by-day forecast.
3.2 days / month
~10% of days
Why this matters
- Expected days 3.2 days / month
- Probability ~10% of days
- Intensity Up to ~79km/h (P95)
Strong gusts are possible on ~3 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Wind High impact
Stormy conditions Measures: Storm-impact proxy days. Observed about 6% of days (2.0 days/month) in August. Historical risk signal only, not a day-by-day forecast.
2.0 days / month
~6% of days
Why this matters
- Expected days 2.0 days / month
- Probability ~6% of days
- Intensity Up to ~77km/h (P95)
Stormy conditions are possible on ~2 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Show all disruptions (17 more)
Rain High impact
Washout run Measures: Multi-day washout runs. Observed about 2.0 days/month in August. Historical risk signal only, not a day-by-day forecast.
2.0 days / month
Probability unavailable
Why this matters
- Expected days 2.0 days / month
- Probability —
- Intensity Up to ~36mm (P95)
Multi-day washout runs are possible on ~2 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Very heavy rain Measures: Very heavy rain days (>=25mm). Observed about 2% of days (0.6 days/month) in August. Historical risk signal only, not a day-by-day forecast.
0.6 days / month
~2% of days
Why this matters
- Expected days 0.6 days / month
- Probability ~2% of days
- Intensity Up to ~42mm (P95)
Very heavy rain is possible on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Cold Moderate
Freezing nights Measures: Freezing nights (min <=0C). Observed about 6% of days (1.7 days/month) in August. Historical risk signal only, not a day-by-day forecast.
1.7 days / month
~6% of days
Why this matters
- Expected days 1.7 days / month
- Probability ~6% of days
- Intensity Up to ~0°C (P95)
Freezing nights are possible on ~2 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Visibility Moderate
Fog-likely signal Measures: Fog-likely visibility proxy. Observed about 4% of days (1.4 days/month) in August. Historical risk signal only, not a day-by-day forecast.
1.4 days / month
~4% of days
Why this matters
- Expected days 1.4 days / month
- Probability ~4% of days
- Intensity Up to ~95% (P95)
Fog-likely conditions are possible on ~1 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Humidity Minor
High humidity Measures: High humidity days (RH >=80%). Observed about 77% of days (23.9 days/month) in August. Historical risk signal only, not a day-by-day forecast.
23.9 days / month
~77% of days
Why this matters
- Expected days 23.9 days / month
- Probability ~77% of days
- Intensity Up to ~93% (P95)
High humidity is possible on ~24 days. Comfort and pace can drop quickly, so plan shorter outdoor blocks with air-conditioned backup stops.
Rain Minor
Wet days Measures: Wet days (>=0.1mm). Observed about 64% of days (19.9 days/month) in August. Historical risk signal only, not a day-by-day forecast.
19.9 days / month
~64% of days
Why this matters
- Expected days 19.9 days / month
- Probability ~64% of days
- Intensity Up to ~20mm (P95)
Measurable rain is possible on ~20 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Cloud Minor
Cloudy days Measures: Cloudy days (cloud cover >=60%). Observed about 53% of days (16.4 days/month) in August. Historical risk signal only, not a day-by-day forecast.
16.4 days / month
~53% of days
Why this matters
- Expected days 16.4 days / month
- Probability ~53% of days
- Intensity Up to ~100% (P95)
Cloudy skies are possible on ~16 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Rainy hours Measures: Rain-hours signal (>=3h rain). Observed about 53% of days (16.3 days/month) in August. Historical risk signal only, not a day-by-day forecast.
16.3 days / month
~53% of days
Why this matters
- Expected days 16.3 days / month
- Probability ~53% of days
- Intensity Up to ~20h (P95)
Several rainy hours are possible on ~16 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Wind Minor
Gusty days Measures: Gusty days (>=40 km/h). Observed about 46% of days (14.3 days/month) in August. Historical risk signal only, not a day-by-day forecast.
14.3 days / month
~46% of days
Why this matters
- Expected days 14.3 days / month
- Probability ~46% of days
- Intensity Up to ~71km/h (P95)
Gusty conditions are possible on ~14 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Rain Minor
Wet most of day Measures: Wet-most-of-day signal (>=6h rain). Observed about 40% of days (12.5 days/month) in August. Historical risk signal only, not a day-by-day forecast.
12.5 days / month
~40% of days
Why this matters
- Expected days 12.5 days / month
- Probability ~40% of days
- Intensity Up to ~21h (P95)
Wet-most-of-day conditions are possible on ~13 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Cold Minor
Cold nights Measures: Cold nights (min <=5C). Observed about 38% of days (11.9 days/month) in August. Historical risk signal only, not a day-by-day forecast.
11.9 days / month
~38% of days
Why this matters
- Expected days 11.9 days / month
- Probability ~38% of days
- Intensity Up to ~5°C (P95)
Cold nights are possible on ~12 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Cloud Minor
Mostly cloudy days Measures: Mostly cloudy days (cloud cover >=80%). Observed about 27% of days (8.4 days/month) in August. Historical risk signal only, not a day-by-day forecast.
8.4 days / month
~27% of days
Why this matters
- Expected days 8.4 days / month
- Probability ~27% of days
- Intensity Up to ~100% (P95)
Mostly cloudy skies are possible on ~8 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Cloud Minor
Overcast days Measures: Overcast days (cloud cover >=95%). Observed about 10% of days (3.1 days/month) in August. Historical risk signal only, not a day-by-day forecast.
3.1 days / month
~10% of days
Why this matters
- Expected days 3.1 days / month
- Probability ~10% of days
- Intensity Up to ~100% (P95)
Overcast skies are possible on ~3 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Other Minor
Low visibility proxy: same as fog-likely (RH ≥90% AND cloud ≥95%) — true visibility requires hourly visibility data Measures: Low visibility proxy: same as fog-likely (RH ≥90% AND cloud ≥95%) — true visibility requires hourly visibility data. Observed about 4% of days (1.4 days/month) in August. Historical risk signal only, not a day-by-day forecast.
1.4 days / month
~4% of days
Why this matters
- Expected days 1.4 days / month
- Probability ~4% of days
- Intensity Up to ~95 (P95)
Low visibility proxy: same as fog-likely (RH ≥90% AND cloud ≥95%) — true visibility requires hourly visibility data is possible on ~1 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Wind Minor
Breezy days Measures: Breezy days (mean wind >=25 km/h). Observed about 4% of days (1.1 days/month) in August. Historical risk signal only, not a day-by-day forecast.
1.1 days / month
~4% of days
Why this matters
- Expected days 1.1 days / month
- Probability ~4% of days
- Intensity Up to ~31km/h (P95)
Breezy conditions are possible on ~1 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Cold Minor
Cold days Measures: Cold days (max <=10C). Observed about 1% of days (0.4 days/month) in August. Historical risk signal only, not a day-by-day forecast.
0.4 days / month
~1% of days
Why this matters
- Expected days 0.4 days / month
- Probability ~1% of days
- Intensity Up to ~10°C (P95)
Cold daytime conditions are possible on ~0 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Cold Minor
Hard freeze nights Measures: Hard freeze nights (min <=-2C). Observed about 1% of days (0.3 days/month) in August. Historical risk signal only, not a day-by-day forecast.
0.3 days / month
~1% of days
Why this matters
- Expected days 0.3 days / month
- Probability ~1% of days
- Intensity Up to ~-2°C (P95)
Hard freeze conditions are possible on ~0 days. Long outdoor blocks become harder to sustain, so layer up and keep a warm indoor fallback nearby.
Frequently asked questions
Is August a good time to visit Hamilton?
Typical August days in Hamilton reach highs of 14°C (57°F) with nights around 6°C (43°F). It usually feels cool by day and cold after dark. It is among the wetter months, so it is wise to have some indoor backup plans or flexible activities.
What are temperatures like in August?
Daytime temperatures in August typically peak near 14°C (57°F), while nights drop to around 6°C (43°F). Expect cool afternoons and cold evenings.
How much does it rain in August?
Rainfall in August averages 115 mm (4.5 in) across roughly 17 days. Overall it is a very wet time of year, so a light rain jacket and waterproof shoes are very handy.
How many hours of daylight are there in August?
You can expect about 11 hours of daylight in August. Sunrise is typically around 08:01 and sunset near 18:43. Days are on the shorter side, so plan activities around limited daylight.
How strong is the sun in August?
UV levels are moderate (around 5); sunscreen and sunglasses are still a good idea.
Is it windy in August?
In August, average wind speeds are around 13 km/h (8 mph), with gusts on the windiest days reaching about 61 km/h (38 mph). On the ground, it is it is a notably windy place, and strong gusts are fairly common.