2025 Compare Cities Climate:
Ontario, CA vs San Diego, CA

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Highlights
- San Diego has 25.5% less rainy days than Ontario.
- San Diego has 4.7% less Sunny Days than Ontario.
- On the BestPlaces comfort index, San Diego scores 4.5% better than Ontario
 Ontario, CASan Diego, CAUnited States
 Rainfall  Unlock1238
 Snowfall0  Unlock28
 Precipitation  Unlock38106
 Sunny279  Unlock205
 Avg. July High  Unlock7986
 Avg. Jan. Low43  Unlock22
 Comfort Index (higher=better)  Unlock9.27
 UV Index5.7  Unlock4.3
 Elevation  Unlock622443
Reviews for Ontario    6 Reviews

We've lived in this area for several years. Traveling long distances to other cities for churches. Passing a quiet, unassuming church along the way for years. Until  More

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cool  More

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I think Ontario,ca us awesome because we have an entertainment Venue and large shopping mall to please everyone of all  More

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Reviews for San Diego    319 Reviews

I have lived in San Diego for more than half my life (I am 30) and love it. It has something for everyone and more from arts, to sporting events, and all cuisine is  More

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The only real knock again San Diego is the cost of living, but it is paradise compared to most cities of similar size. Those who complain about the traffic here or say  More

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I have lived in San Diego since 1968 and I am now almost 62 years old. I love San Diego, I really do. But it has become so crowded and so expensive over the years. It  More

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