Climate normals · 1970–2000
Costa Mesa Climate
Costa Mesa is a city in United States (CA) with a population of about 113,204. Its average annual temperature is 17°C (63°F), with roughly 318 mm of rain per year.
17°C
Avg Temp
318
Precip (mm/yr)
Aug
Hottest Month
Jan
Coldest Month
Costa Mesa Climate
Costa Mesa has an average annual temperature of 17°C (63°F) and receives about 318 mm of precipitation per year. The warmest month is August and the coldest is January. Figures are 1970–2000 climate normals.
17°C
Avg Temp
318
Precip (mm/yr)
Aug
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 13° / 56° | 70 mm |
| February | 14° / 57° | 68 mm |
| March | 14° / 58° | 59 mm |
| April | 16° / 60° | 17 mm |
| May | 17° / 62° | 5 mm |
| June | 19° / 66° | 2 mm |
| July | 21° / 69° | 1 mm |
| August | 21° / 70° | 2 mm |
| September | 21° / 69° | 8 mm |
| October | 19° / 66° | 8 mm |
| November | 16° / 60° | 32 mm |
| December | 14° / 56° | 46 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Costa Mesa
The most comfortable months to visit Costa Mesa are typically August, July and September, when temperatures are mildest and rainfall is relatively low. The hottest month is August (around 25°C high). The coldest is January (near 8°C low). January is usually the wettest month.
Where to stay near Costa Mesa
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Frequently Asked Questions
The most comfortable months to visit Costa Mesa are typically August, July and September, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Costa Mesa, United States has an average annual temperature of 17°C and about 318 mm of precipitation per year. The warmest month is August and the coldest is January.
In August, the hottest month, daily highs in Costa Mesa average about 25°C (77°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.