🇨🇦 Ottawa vs San Francisco 🇺🇸
Ottawa, Canada vs San Francisco, United States — a side-by-side climate comparison to help you pick. San Francisco is the warmer of the two — about 7 degrees warmer on average across the year. San Francisco is drier, with roughly 143 fewer rainy days a year.
Climate at a glance
| 🇨🇦 Ottawa | 🇺🇸 San Francisco | |
|---|---|---|
| Avg annual high | 12°C | 19°C |
| Hottest month | July (26°C) | September (24°C) |
| Coldest month | January (-14°C low) | January (8°C low) |
| Rainy days / year | 207 | 64 |
| Snow | Rare | Rare |
| Best months to visit | May, June, September | June, July, August |
🇨🇦 Ottawa
Best around May, June, September. Hottest in July (26°C), coldest lows in January (-14°C).
🇺🇸 San Francisco
Best around June, July, August. Hottest in September (24°C), coldest lows in January (8°C).
Frequently asked questions
Is Ottawa or San Francisco warmer?
San Francisco is warmer overall, averaging about 7 degrees higher across the year.
Which is rainier, Ottawa or San Francisco?
Ottawa is rainier — San Francisco sees about 143 fewer rainy days per year.
When is the best time to visit Ottawa vs San Francisco?
Ottawa is best around May, June, September; San Francisco is best around June, July, August.