Santa Ana, California vs Costa Mesa Climate
92%matchOn climate, Costa Mesa is a 92% match for Santa Ana. Compared with Santa Ana, Costa Mesa has the same winter lows and 7°F (4°C) cooler summer days.
Santa Ana gets 12 in (295 mm) of rain a year and Costa Mesa 11 in (278 mm). Santa Ana's warmest month is August, at 85°F (29°C); Costa Mesa's is September, at 77°F (25°C).
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
Santa AnaCosta Mesasolid = high, dashed = low
Rain (in per month)
Santa AnaCosta Mesa
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Santa Ana | Costa Mesa | Santa Ana | Costa Mesa | Santa Ana | Costa Mesa | |
| Jan | 70°F(21°C) | 67°F(19°C) | 47°F(8°C) | 47°F(9°C) | 2.4 in(61 mm) | 2.3 in(58 mm) |
| Feb | 70°F(21°C) | 66°F(19°C) | 48°F(9°C) | 49°F(9°C) | 2.8 in(70 mm) | 2.7 in(68 mm) |
| Mar | 71°F(22°C) | 67°F(19°C) | 50°F(10°C) | 50°F(10°C) | 1.8 in(46 mm) | 1.7 in(42 mm) |
| Apr | 74°F(23°C) | 69°F(21°C) | 52°F(11°C) | 52°F(11°C) | 0.8 in(21 mm) | 0.7 in(17 mm) |
| May | 75°F(24°C) | 70°F(21°C) | 57°F(14°C) | 56°F(14°C) | 0.2 in(5 mm) | 0.2 in(5 mm) |
| Jun | 78°F(26°C) | 72°F(22°C) | 60°F(16°C) | 60°F(16°C) | 0.1 in(2 mm) | 0.1 in(2 mm) |
| Jul | 82°F(28°C) | 75°F(24°C) | 64°F(18°C) | 63°F(17°C) | 0.0 in(1 mm) | 0.0 in(1 mm) |
| Aug | 85°F(29°C) | 77°F(25°C) | 65°F(18°C) | 64°F(18°C) | 0.0 in(1 mm) | 0.0 in(1 mm) |
| Sep | 84°F(29°C) | 77°F(25°C) | 63°F(17°C) | 62°F(17°C) | 0.2 in(4 mm) | 0.2 in(4 mm) |
| Oct | 80°F(27°C) | 75°F(24°C) | 58°F(14°C) | 58°F(14°C) | 0.5 in(12 mm) | 0.4 in(10 mm) |
| Nov | 75°F(24°C) | 71°F(22°C) | 51°F(10°C) | 51°F(11°C) | 0.9 in(22 mm) | 0.8 in(21 mm) |
| Dec | 69°F(21°C) | 66°F(19°C) | 46°F(8°C) | 47°F(8°C) | 2.0 in(50 mm) | 1.9 in(49 mm) |
1991–2020 averages, by calendar month.