Costa Mesa, CA weather in June
Expect mild, dry weather in Costa Mesa in June, with highs near 78°F and lows near 61°F. Rain falls on about 1 day. Great for outdoor plans.
- Normal high
- 78°F
- Normal low
- 61°F
- Wet days
- 1
- 0.07 in total
- Muggy days
- 0
- dew point 65°F+
How June changes from start to finish
| June 1 | June 30 | |
|---|---|---|
| Normal high | 75°F | 81°F |
| Normal low | 60°F | 63°F |
| Chance of a wet day | 3% | 1% |
| Sunrise / sunset | 5:42 am / 7:56 pm | 5:44 am / 8:06 pm |
| Daylight | 14.2 h | 14.4 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Pacific Time).
A typical June day
- 6 am63°Fdew point 57°F
- 9 am68°Fdew point 58°F
- Noon70°Fdew point 58°F
- 3 pm69°Fdew point 58°F
- 6 pm66°Fdew point 58°F
- 9 pm63°Fdew point 58°F
NOAA hourly normals (local standard time) from Los Angeles Intl Airport (34 mi away); average wind 8 mph; clear or few clouds in 49% of daytime hours, mostly cloudy or overcast in 30%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F19 of 30
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph11 of 30
- Hot dayshigh 90°F or more1 of 30
- Muggy daysdaily mean dew point 65°F or more0 of 30
- Wet daysat least 0.01 in of rain or melted snow1 of 30
- Notable rainat least 0.10 in0 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per June, counted from daily records for each year 1991-2020.
Rain in June
Normal precipitation is 0.07 in; a dry June brings about 0.0 in and a wet one about 0.03 in (25th and 75th percentiles). Days with half an inch or more are rare.
How June varies from year to year
- Warmest June, 1991-20202006: average high 85°F
- Coolest June1991: average high 74°F
- Wettest June1995: 0.8 in
- Driest June1991: no measurable precipitation
- Highest reading107°F (June 20, 2016)
- Lowest reading49°F (June 6, 1993)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
June compared with May and July
| May | June | July | |
|---|---|---|---|
| Normal high | 75°F | 78°F | 83°F |
| Normal low | 58°F | 61°F | 65°F |
| Wet days | 2 | 1 | 1 |
| Comfortable days | 25 | 19 | 5 |
| Daylight | 13.9 h | 14.3 h | 14.1 h |
Highs change by +3°F from May and +5°F into July.
Nearby alternatives in June
- Warmer: Corona, CA26 mi · high 88°F · 0 wet days
- Cooler: Torrance, CA28 mi · high 72°F · 1 wet day
How Costa Mesa ranks in June
- Normal high278th warmest of 378 cities; 38th of 60 in California
- Wet days26th driest of 378
- Comfortable days23rd most of 340
What to pack for Costa Mesa in June
- A swimsuit – about 11 beach days
- Sunglasses and sunscreen – about 14.4 hours of daylight and highs near 78°F
Heating and cooling
June has 4 heating degree days and 139 cooling degree days (base 65°F), 6% of the year's total heating and cooling demand.
Questions
How hot is Costa Mesa in June?
The normal high is 78°F and the normal low is 61°F. From 1991 to 2020 the hottest June reading was 107°F (June 20, 2016).
Does it rain a lot in Costa Mesa in June?
About 1 days in June have at least 0.01 in of precipitation, and the normal total is 0.07 in. The wettest June in 1991-2020 was in 1995 (0.8 in); the driest was in 1991, with no measurable precipitation.
Is June a good time to visit Costa Mesa?
June ranks 3rd of 12 months on our comfort score for Costa Mesa (83 out of 100). It has about 19 comfortable days and about 1 day at 90°F or hotter. The best month is May.
Where the numbers come from
- Temperature: Santa Ana Fire Stn (USC00047888), 7.7 mi NNE of the city center, 135 ft . NOAA normals and daily records, 1991-2020.
- Rain, snowfall and snow depth: Newport Beach Harbor (USC00046175), 3.3 mi SE of the city center, 10 ft (90 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Santa Ana John Wayne Airport (USW00093184), 4.0 mi NE of the city center, 54 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Los Angeles Intl Airport (USW00023174), 34 mi NW of the city center, 97 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: J. Wayne Apt-Orange Co Apt (722977-93184), 4.0 mi NE of the city center, 43 ft (57 ft lower than the city). Hourly observations, 1991-2020.