Costa Mesa, California Climate
United States
Pop. 113,204 Elev. 33 m / 108 ft
TZ: America/Los_Angeles (UTC-7) ·
Dry and warm, Costa Mesa sees August highs of 81°F (27°C) and mild January lows of 48°F (9°C). Expect around 19 rainy days annually (15.2 in / 386 mm total). The city averages 191 sunny days per year. Ocean water temperatures reach 73°F (23°C) in summer.
| Temperature | 81°F (27°C) high | 48°F (9°C) low |
| Feels like | 84°F (29°C) high | 48°F (9°C) low |
| Rain | 19 days | 15.2 in (386 mm) /yr |
| Sky | 191 sunny | 13 stormy |
| Wind | 3.2 mph (1.4 m/s) avg |
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Explore on the MapMonthly Climate Chart
Best months to visit: Jan, Apr, May, Jun, Jul, Aug, Sep, Oct
Sky & Air by Month
Cloud cover (%)
36
Jan 58
Feb 50
Mar 43
Apr 54
May 45
Jun 35
Jul 28
Aug 40
Sep 29
Oct 52
Nov 46
Dec Humidity (%)
48
Jan 75
Feb 71
Mar 67
Apr 71
May 73
Jun 72
Jul 70
Aug 73
Sep 73
Oct 80
Nov 77
Dec Weather Days by Month
Water Temperatures
Cities with Similar Climate
Find similar cities on the map →Nearby Cities
Nearby
Commercial airport 4 mi John Wayne Orange County International Airport (SNA)
Ski resort 47 mi Mt. Baldy Resort
National park 8 mi Bolsa Chica Ecological Reserve
Mountain peak
(5,496 ft) 22 mi Modjeska Peak
Hospital 1 mi College Hospital Costa Mesa
Hiking trail 11 mi California Mission Trail - stage 03 San Juan Capistrano to Mission San Gabriel Arcangel
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Monthly Weather Data
↑ See chart| Month | Avg High | Avg Low | Rainfall | Snowfall | Sunny Days |
|---|---|---|---|---|---|
| January | 67°F 19°C | 48°F 9°C | 0.7 in 18 mm | — | 15 |
| February | 67°F 19°C | 52°F 11°C | 2.1 in 53 mm | — | 8 |
| March | 65°F 18°C | 52°F 11°C | 2.0 in 51 mm | — | 14 |
| April | 67°F 20°C | 54°F 12°C | 0.4 in 10 mm | — | 14 |
| May | 72°F 22°C | 59°F 15°C | 0.3 in 7 mm | — | 10 |
| June | 74°F 23°C | 62°F 16°C | 0.2 in 5 mm | — | 13 |
| July | 75°F 24°C | 63°F 17°C | 0.1 in 3 mm | — | 21 |
| August | 81°F 27°C | 66°F 19°C | 0.0 in 1 mm | — | 28 |
| September | 80°F 27°C | 67°F 19°C | 0.3 in 8 mm | — | 16 |
| October | 75°F 24°C | 60°F 16°C | 1.1 in 29 mm | — | 24 |
| November | 70°F 21°C | 56°F 13°C | 4.6 in 118 mm | — | 13 |
| December | 68°F 20°C | 53°F 12°C | 3.3 in 84 mm | — | 15 |
Weather Days by Month
↑ See chart| Month | Sunny Days | Storm Days |
|---|---|---|
| January | 15 | 2 |
| February | 8 | 1 |
| March | 14 | 2 |
| April | 14 | 0 |
| May | 10 | 0 |
| June | 13 | 0 |
| July | 21 | 0 |
| August | 28 | 0 |
| September | 16 | 0 |
| October | 24 | 1 |
| November | 13 | 4 |
| December | 15 | 3 |
Water Temperatures Data
↑ See chart| Month | Ocean Avg High | Lake Avg High |
|---|---|---|
| January | 59°F 15°C | 55°F 13°C |
| February | 59°F 15°C | 57°F 14°C |
| March | 59°F 15°C | 59°F 15°C |
| April | 61°F 16°C | 63°F 17°C |
| May | 66°F 19°C | 68°F 20°C |
| June | 68°F 20°C | 72°F 22°C |
| July | 70°F 21°C | 74°F 23°C |
| August | 73°F 23°C | 77°F 25°C |
| September | 72°F 22°C | 77°F 25°C |
| October | 69°F 21°C | 71°F 22°C |
| November | 67°F 19°C | 65°F 19°C |
| December | 65°F 18°C | 60°F 16°C |