Best time to visit Hamilton, WA
A month-by-month travel weather guide based on NOAA 30-year climate normals.
The most comfortable travel window in Hamilton runs from April through October — 7 months of pleasant temperatures and modest rainfall.
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 8h 31m
Mild but on the chilly side. Pack a jacket; great for hiking and city walks.
Daylight ≈ 9h 56m
Mild but on the chilly side. Pack a jacket; great for hiking and city walks.
Daylight ≈ 11h 38m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 13h 26m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 15h 1m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 15h 51m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 15h 32m
Sweet spot — comfortable highs in the 65-80°F range, mild nights, low rain. Ideal for nearly any outdoor plan.
Daylight ≈ 14h 9m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 12h 20m
Comfortable for most activities. Bring layers; nights can be cool.
Daylight ≈ 10h 32m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 8h 55m
Frequent rain. Bring waterproof gear; outdoor plans need flexibility.
Daylight ≈ 8h 6m
Looking for similar climates? See Hamilton's climate twins. Or jump straight to the full climate profile.