30YearWeather
Hamilton, September 27
Hamilton street view during September
Historical Weather Analysis

Hamilton Weather on September 27 — Best Time to Visit?

Based on 30 years of historical data, we have the answer.

cloudy

15.9°C

High

8.4°C

Low

32%

Rain

🌤️ Feels like 15.9°C

partly-cloudy-day
YES, GOOD CHOICE
Peak Season

September 27 is generally a great time to visit Hamilton. While there is a slight chance of rain (32%), showers are usually brief. Expect comfortable 16°C weather. It's a lively time to explore Hamilton, with most attractions operating at full capacity.

Currency

NZD

$ New Zealand dollar

Language

English

+2 more

Driving

Left side

Safety

Very High Safety

GPI: 1.269

Hamilton Weather Forecast for September 27

"Mild & Comfortable. Expect average highs of 15.9°C. 32% chance of rain."

What to Wear in Hamilton in September

Based on historical data for September 27, Hamilton typically experiences temperatures between 8.4°C and 15.9°C. We recommend packing light jacket, long pants, umbrella to stay comfortable. With a 32% chance of rain, keeping a raincoat or umbrella handy is a smart move.

Complete Packing Guide

Weekly breakdown & essential items for Hamilton

View Guide

Smart Suitcase

  • Light Jacket
  • Long Pants
  • Umbrella

Average High

extreme-hot

15.9°C

Daytime Peak

Average Low

extreme-cold

8.4°C

Nighttime Low

Feels Like

partly-cloudy-day

15.9°C

🌤️ Feels accurate

Rain Chance

rain

32%

Avg 2.3mm if it rains

Cloud Cover

cloudy

66%

Light drizzle

Pressure

pressure

1016.2 hPa

High volatility

Hamilton Weather Conditions & UV Index

Weather Confidence

30-year variance analysis

86%Highly Predictable

Based on 10 years of data

Temperature
±1.2°CStable
Precipitation
16-70%Unpredictable

🎯 This date historically delivers consistent weather 86% of the time. Safe to plan outdoor activities with confidence.

Sun Exposure

UV Index & Safety Guide

2.6Low
036811+

Protection Needed

SPF 15 for extended outdoor time

Time to Sunburn

Type I-II

🔴 31 min to burn

Type III-IV

🟡 47 min to burn

Type V-VI

🟢 78 min to burn

UV estimate based on latitude, season & cloud cover. Actual UV may vary.

Outdoor Comfort

How pleasant is it outside?

67Good
TemperatureMild
HumidityMuggy
WindBreezy

Dew Point

12.6°C

Pleasant

Heat Stress

Low

No heat warning

🙂 Best outdoor time:
Any time during daylight hours

Travel & Logistics Insights

Local Calendar

Business Day

Standard hours in New Zealand

Flight Traffic

Busy

77/100 pressure index

Health Advisory

Required

1 vaccine • View Details →

Landing Slots

~10

Daily arrival options (inc. codeshare)

Sunrise, Sunset & Wind in Hamilton

Daylight & Sun

Solar Elevation Cycle

🌅 Sunrise

07:02

☀️ Noon

13:11

🌇 Sunset

19:19

⏱️ Daylight

12h 16m

Golden Hour
Morning07:02 - 07:37
18:45 - 19:19Evening

Wind Speed

wind

21.7 km/h

Moderate wind

Sunshine

clear-day

8.8 hrs

Direct Sun (Cloud-free)

Humidity

humidity

81%

Humid / Damp

Travel Intelligence

Exclusive flight analytics & health data for Hamilton

Smart Flight Estimator

Airport-to-Airport Logistics

unlock smart flight estimates

Add your home location in settings to see airport details.

Travel Health & Safety in Hamilton

Travel Comfort Index

Real-time tourism conditions

Weather Quality

⛅ Good

74/100

Tourist Crowds

🟡 Busy

85/100

Price Level

💰💰💰 Expensive

90/100

Health & Wellbeing

Meteo-Health Forecast

70Score
Atmospheric Pressure1016.2 hPa
Volatility:High
Migraine RiskHigh

Rapid pressure changes detected. High risk for meteosensitive people.

Joint Pain RiskLow

Weather unlikely to affect joint pain.

Fishing IndexExcellent

Fish are active due to pressure changes.

Air Quality Forecast
23AQI
Good
PM2.5 Concentration4.9 µg/m³

Air quality is excellent. Perfect for outdoor activities.

Regional Safety Profile

High

Seismic Activity

Active seismic zone. Multiple earthquakes per year.

Total events (30y):316
In Sep (30y):28
Last in Sep:2025-09-22
💡 Earthquake risk elevated. Download a seismic alert app.

Travel Alert: This region has elevated natural risks. We recommend registering with your embassy and keeping emergency numbers handy.

"According to 30YearWeather's analysis of 30 years of NASA satellite data, Hamilton on September 27 averages 15.9°C with a 32% precipitation probability. Wedding/Outdoor Event Score: 81/100."

— Source: 30YearWeather.com|Data: NASA POWER (1991-2021)|View Methodology

Hamilton Weather History (2010–2024)

Temperature History

Loading chart...

Hall of Fame

Records from last 10 years

Hottest
2025
18°C
Coldest
2021
4.4°C
Rainiest
2020
16.9mm

Compare Other Cities

Same date (September 27) in other destinations

🌍 Explore the same date in different destinations around the world

📍 Is Hamilton Worth Visiting on September 27?

Planning a trip to Hamilton on September 27? Our historical weather analysis based on 30 years of NASA satellite data shows that this time of year is characterized by pleasant mild weather averaging 15.9°C with a 32% historical precipitation risk.

✈️ Travel Logistics: Approximately 10 landing slots available daily during this period, indicating manageable crowd levels.

💉 Health Advisory: 6 vaccinations are recommended for New Zealand, including COVID-19.

📊 Historical Extremes: The hottest September 27 recorded in the last 30 years saw temperatures hit 18°C in 2025, while the coldest dropped to 4.4°C in 2021.

Hamilton Weather FAQ