Hamilton weather in May 2025

Expect 19°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Hamilton in May. Check more long-term weather averages for Hamilton in May before you book your next holiday to Ontario in 2025/2026.

  • 19°C maximum daytime temperature in May in Hamilton19
    19°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in May in Hamilton11
    11 days with some rainfall
  • 8°C minimum night-time temperature in May in Hamilton8
    8°C min night temperature
  • 15 hours of daylight per day in May in Hamilton15
    15 hours of daylight per day
  • No heat & humidity in May in Hamilton0
    No heat & humidity
  • 73 mm monthly rainfall in May in Hamilton73
    73 mm of monthly rainfall
  • UV (maximum) index 7 (High) in May in Hamilton7
    7 (High) UV index
  • 7°C sea temperature in May in Hamilton7
    7°C sea temperature

More about Hamilton

Hamilton by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Ontario

Travelbag: Latest holiday sale offers worldwide

  • Explore latest sale offers on holidays in 2024/2025
  • Filter deals by continent, star rating & holiday type
  • Including Dubai, Caribbean, North America, Asia & Pacific
Go to Travelbag deal >>

View all Travelbag offers

TravelbagHoliday deal finder

The May weather guide for Ontario (Hamilton) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about Canada

How hot is it in Hamilton in May?

Daytime temperatures usually reach 19°C in Hamilton in May, falling to 8°C at night.

How sunny is it in Hamilton in May?

There are normally 8 hours of bright sunshine each day in Hamilton in May - that's 52% of daylight hours.

Is the sea cold around Hamilton in May?

The average sea temperature around Hamilton in May is 7°C.

Does it rain in Hamilton in May?

There are usually 11 days with some rain in Hamilton in May and the average monthly rainfall is 73mm.

Hamilton May sunrise & sunset times

Browse the sunrise and sunset times for Hamilton in May 2025. Select a month to view Hamilton sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:12 19:21
Friday, 16th May 2025 04:54 19:38
Saturday, 31st May 2025 04:43 19:52

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^