The hottest month in Hamilton is typically February, with daytime highs averaging around 24.6°C (76°F), based on 10 years of historical weather data. Overnight lows during this period average near 15.2°C (59°F).

What is the coldest month in Hamilton?

The coldest month in Hamilton is typically August, with overnight lows averaging around 6.3°C (43°F) and daytime highs near 14.4°C (58°F), based on 10 years of historical weather data.

Does Hamilton have a rainy season?

Hamilton doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. July is the wettest month on average (about 131 mm), while March is the driest (about 81 mm).

What's the best time of year to visit Hamilton?

The best time to visit Hamilton is typically January to March, when daytime highs average a comfortable 23.6°C (74°F). Rainfall during this window averages around 85 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.

Atmospheric Details

Wind

24 km/h

WSW · Moderate Breeze · Max 27 km/h

Humidity

70 %

High · feels muggy

UV Index

Moderate

Visibility

10 km

Excellent

Pressure

1011 hPa

Stable

Dew Point

10°C

Comfortable

Today vs Normal

17°C+2° above normal

The long-term average high for today is 15°C.

25 of the last 30 days with published data ran above normal.

It continues that pattern - today's forecast is also running above normal.

Red = above normal, blue = at or below · last 12 days

Air Quality

Moderate

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Health & Activity Advice

✅ Good for Outdoors

UV index is 3 today - moderate. Sunscreen is worth using for extended time outside, but no special precautions are needed for short trips.

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.

Conditions are comfortable for outdoor activity at most points during the day today.